(junior) fullstack engineer (m/f/d) for a new product

ai engineer (m/f/d)

full stack engineer

senior data engineer

senior product engineer

analytics engineer (m/w/d) Jobs in Berlin

analytics engineer (m/w/d)

back end engineer

<div>About the opportunity

We are seeking a talented engineer to join our Customers Identity segment, responsible for developing customer identity verification products that are frictionless to users, flexible and secure, ensuring the authenticity of our customers as we grow whilst maintaining a high level of trust with regulators.

Our cross-functional teams are passionate about collaboration and sharing knowledge, as well as working with a high degree of autonomy.

As a Backend Engineer at N26, you will be encouraged to embrace the latest technological updates and given a platform to work on complex, interesting problems on a daily basis. 

In this role, you will:
<ul>
<li>Collaborate closely with your Tech Lead on architecting new features and seeing them through to completion.
</li>
<li>Design, develop, test, deploy and maintain software in a thriving environment.
</li>
<li>Have opportunities to mentor junior members in the team by relentlessly guarding code quality through pull requests and helping them when they have questions.
</li>
<li>Stay up to date with the latest trends in technology and you are not afraid to propose some findings during our Get Stuff Done Days.
</li>
<li>Work within your cross-functional team to uphold the highest technical standards right across the product
</li>
</ul>What you need to be successful:
<ul>
<li>Experience in developing software using a JVM language and Spring Boot in large-scale production systems (note: experience of Kotlin would be a plus)
</li>
<li>Sound understanding of microservice architecture
</li>
<li>Knowledge of both relational and non-relational databases, preferably Postgres
</li>
<li>Appreciation of working in a modern cloud architecture, preferably with AWS
</li>
<li>Full professional proficiency in English
</li>
<li>Strong bias for action, and getting things done
</li>
<li>Ongoing appreciation and consideration for security
</li>
<li>Motivation to write code which is well-tested and well-documented
</li>
<li>Give and receive open, direct and timely feedback
</li>
</ul>What's in it for you:
<ul>
<li>Accelerate your career growth by joining one of Europe's most talked about disruptors .
</li>
<li>Employee benefits that range from a competitive personal development budget, work from home budget, discounts to fitness &amp; wellness memberships, language apps and public transportation.
</li>
<li>As an N26 employee you will have access to a Premium subscription on your personal N26 bank account. As well as subscriptions for friends and family members.
</li><li>Additional day of annual leave for each year of service.
</li><li>A high degree of autonomy and access to cutting edge technologies - all while working with a friendly team of peers of diverse nationalities, experiences, and backgrounds.
</li>
<li>A relocation package with visa support for those who need it.
</li>
</ul>Who we are

N26 has reimagined banking for today's digital world. Technology and design empower everything we do and it's how we are building the global banking platform the world loves to use.

We've eliminated physical branches, paperwork, and hidden fees for an elegant digital experience and supreme savings. Giving people the power to live and bank their way is what gets us out of bed in the morning and inspires the work that we do.

We are headquartered in Berlin with offices in multiple cities across Europe, including Vienna and Barcelona, and a 1,500-strong team of more than 80 nationalities.

Do you see yourself thriving in this role? We'd love to see your application even if you don't meet 100% of the criteria. You may just be the right fit for this or other roles!

Equal opportunities for all

At N26, we believe our strength lies in our people and the varied perspectives they bring. We strive to build diverse teams that drive innovation and business success. We actively seek talent from all backgrounds and welcome applications from all genders, cultures, sexual orientations, abilities, neurodiversities, and ages.

We are committed to providing an excellent and accessible candidate experience. If you require any accommodations to make this process work for you, please let us know. We're here to support you!

Discover more about Diversity &amp; Inclusion at N26: https://n26.com/en-eu/diversity-and-inclusion</div>

Backend Engineer - Customer Identity

idealo internet

<div>Reliable data, resilient services and scalable architectures are at the heart of every CRM interaction at idealo. As a Staff Engineer, you'll shape the technical foundation behind identity management, subscriptions, messaging and customer data, helping build a platform that supports personalized user experiences at scale.
This role combines backend engineering, data engineering and architectural leadership. You'll influence how data flows across systems, how services communicate through event-driven architectures, and how technical decisions support idealo's long-term CRM strategy. Working closely with Software Engineers, Data Engineers and Product Managers, you'll help define technical direction across multiple domains.
You'll work with Java, Spring Boot, Kafka and AWS services including Snowflake, Glue and S3 in a modern cloud-native architecture. From data ingestion and transformation to customer-facing activation, you'll help build reliable systems that teams across idealo depend on every day. When new CRM capabilities go live, you'll see the direct impact of your work in millions of customer interactions.
The position is available in full or part-time.
<h3 class="jobSectionHeader">About your new role</h3><ul><li>
Define and evolve the technical architecture for CRM Tech, ensuring scalable, reliable and maintainable systems that support idealo's long-term business goals.</li><li>
Stay hands-on by designing and developing cloud-native microservices, event-driven applications and backend services with a strong focus on performance, security and operational excellence.</li><li>
Shape the evolution of our data platform by improving data architecture, ETL processes, data warehousing, event flows and integrations across multiple systems and domains.</li><li>
Lead technical initiatives within the team and across the wider product area, working closely with Product Managers and engineering teams to align technical solutions with business needs.</li><li>
Drive continuous improvements across software development, CI/CD pipelines, observability, monitoring and engineering practices while evaluating new technologies where they add measurable value.</li><li>
Mentor engineers through technical guidance, architecture discussions and code reviews, fostering a collaborative engineering culture focused on sustainable technical excellence.</li></ul><h3 class="jobSectionHeader"> 
Skills &amp; Requirements</h3><ul><li>
You bring extensive experience building cloud-native software systems on AWS and designing distributed, event-driven architectures using Java 17+, Spring Boot, Kafka and modern backend technologies.</li><li>
You have deep expertise in data architecture, data warehousing, ETL processes and data integration, combined with hands-on experience working with technologies such as Snowflake, Glue, S3 and MongoDB or other NoSQL databases.</li><li>
You are experienced with containerization and orchestration technologies including Docker and Kubernetes, and are familiar with serverless architectures, AWS Lambda and modern CI/CD practices.</li><li>
You have a strong understanding of software quality, security and reliability, including authentication, encryption, automated testing and secure software development practices.</li><li>
You have a proven track record of leading complex technical initiatives, influencing architectural decisions and aligning engineering work across teams without formal people management responsibility.</li><li>
You take ownership and independently drive topics forward. The confidence to speak up and challenge ideas constructively, paired with openness to diverse perspectives.</li></ul><h3 class="jobSectionHeader">
At idealo you can expect</h3><ul><li>
You want to further your education? We take your personal development goals seriously and, in addition to our idealo Learning Hub, eLearning offerings (e.g., Udemy), coaching &amp; mediation, we also offer you the opportunity to benefit individually from additional learning and development budget.</li><li>
And what about the office? Our office in the heart of Berlin offers free organic breakfast, excellent free lunch (vegan and vegetarian), as well as free coffee, lemonades and after-work beer, in addition to the &quot;standard foosball&quot;. It also has a fabulous rooftop terrace with view of the whole of berlin where you can network with colleagues from our group of companies.</li><li>
In need of additional support in any areas of your life? We offer free counseling and support in all areas of life (professional, private, family, health, etc.) in cooperation with the pme-Familienservice.</li><li>
You want full flexibility on your way to work and beyond? No problem with a job bike or Deutschlandticket - and it's environmentally friendly, too!</li><li>
Want to keep yourself fit? We offer many different fitness and sports options, such as an Urban Sports or Gympass membership, to suit your personal needs.</li><li>
And what else is there? Of course, success must be celebrated! In addition to team events, you can also expect big company events and other moments of organized connection with others in the company and your team throughout the year!</li></ul>
#LI-MW1</div>

Staff Engineer (m|w|d) - Backend and Data

Parloa

<div>
 
 About Parloa
 
 
 
 Parloa's mission is to make every customer conversation feel effortless for both customers and the companies serving them. As agentic AI accelerates, Parloans are shaping the foundation of a new era in customer experience, one where customer support is no longer transactions, but meaningful exchanges. It is not just a vision; Parloa has powered over ONE BILLION interactions between global enterprise brands and their customers, with companies like Booking.com, HealthEquity, Allianz, SAP, BarmeniaGothaer, and TUI already deploying Parloa at scale.
 
 
 
 About the role:
 
 
 
 As a
 
 Senior Backend Engineer,
 
 you will work on a marketplace of tools and integrations which Parloa's agents leverage via MCP. Managed access to business systems dramatically increases their value while controlling for security and risk. You haven't worked with our stack? That's fine! We would love to get in touch as long as you are open to learn and code in Typescript.
 
 
 
 Areas of ownership:
 
 
 
 <ul>
 <li>
 Design, build, and maintain secure and scalable backend services
 </li>
 <li>
 Optimize system performance for low latency, high throughput, and reliability
 </li>
 <li>
 Collaborate across teams to integrate machine learning components into production systems
 </li>
 <li>
 Lead technical initiatives - design, planning, implementation, and maintenance (3-9 months horizon)
 </li>
 <li>
 Drive initiatives to improve operational excellence
 </li>
 <li>
 Contribute to the evolution of our architecture and engineering culture
 </li>
 <li>
 Set cultural standards for fearless iteration, bias for action, and pragmatic perfectionism&mdash;design for tomorrow, build for today.
 
 
 </li>
 </ul>
 
 OUR TECH STACK:
 
 
 
 TypeScript, Node.js, React, Python, FastAPI, Kubernetes, MongoDB, Azure, Kafka, NATS
 
 
 
 Who you are:
 
 
 
 <ul>
 <li>
 7+ years of experience as a software engineer
 </li>
 <li>
 Experience in Typescript, Node (ideally NestJS); or experience with comparable frameworks in other languages, and a willingness to learn and code in Typescript
 </li>
 <li>
 Experience with developing and maintaining highly scalable and reliable microservices
 </li>
 <li>
 Deep understanding of distributed systems, event-driven architectures, and APIs
 </li>
 <li>
 Experience with cloud-native infrastructure (e.g., Kubernetes, GCP/AWS)
 </li>
 <li>
 A bias for action, strong ownership, and a passion for clean, pragmatic code
 </li>
 <li>
 Experience in leading technical projects (3-9 months horizon)
 </li>
 <li>
 Strong spoken and written communication skills in English
 </li>
 <li>
 Curiosity and openness to work with AI-assisted coding tools
 </li>
 <li>
 Thrives in ambiguous, high-stakes environments with a strong sense of urgency.
 </li>
 <li>
 Embodies Parloa's ambition: to build Europe's leading engineering culture and a world-class AI platform.
 </li>
 <li>
 Motivated by making the impossible possible and building something iconic.
 
 
 </li>
 </ul>
 
 Our engineering values:
 
 
 
 At Parloa, we hire, promote, and evaluate based on cultural and technical excellence. You'll thrive here if you:
 
 
 <ul>
 <li>
 
 Earn Trust
 
 &ndash; act with transparency and reliability.
 </li>
 <li>
 
 Obsess Over Customers
 
 &ndash; always start with the customer problem.
 </li>
 <li>
 
 Think Big
 
 &ndash; set bold goals and pursue them fearlessly.
 </li>
 <li>
 
 Have Integrity
 
 &ndash; do the right thing, especially when it's hard.
 </li>
 <li>
 
 Disagree &amp; Commit
 
 &ndash; debate with candor, align fast, and deliver.
 </li>
 <li>
 
 Own It
 
 &ndash; take full responsibility for outcomes, not just tasks.
 </li>
 <li>
 
 Dive Deep
 
 &ndash; master the details without losing sight of the big picture.
 </li>
 <li>
 
 Bias for Action
 
 &ndash; move fast, decide quickly, iterate fearlessly.
 </li>
 <li>
 
 Deliver Value
 
 &ndash; measure success by customer and business impact.
 </li>
 <li>
 
 Insist on the Highest Standards
 
 &ndash; raise the bar continuously.
 </li>
 <li>
 
 Go the Extra Mile
 
 &ndash; make the impossible possible.
 </li>
 <li>
 
 Hire &amp; Elevate the Best
 
 &ndash; raise the bar with every hire
 
 
 </li>
 </ul>
 
 Our recruiting process:
 
 
 
 Recruiter Call &rarr; Technical Peer Interview &rarr; 360&deg; Tech Interview Loop &rarr; Bar Raiser
 
 
 
 Why Parloa?
 
 
 
 We're at the beginning of a new era in customer experience, one where AI doesn't just respond, but understands, reasons, and takes action. We're building agentic AI that enterprises trust with their most important customer moments: complex questions, high volumes, real stakes. When millions of people reach out to a brand, those interactions aren't just support tickets; they're defining experiences. We're here to raise the standard: making every conversation seamless, intelligent, and genuinely helpful. If you care about shaping how businesses and customers connect at scale&mdash;and want your work to matter in real, everyday moments&mdash;this is where you do it.
 
 
 At Parloa, ownership isn't a buzzword; it means being accountable for outcomes, not just tasks. We operate in a category that's evolving fast, where the bar is high, and the problems are complex. We hire people who think in solutions, communicate with clarity, and follow through. People who are comfortable making decisions, taking responsibility, and raising the standard for themselves and those around them.
 
 
 We've grown beyond the earliest startup phase, but we've kept the intensity: fast execution, direct feedback, and a strong expectation to contribute meaningfully from day one.
 
 
 Backed by leading global investors like General Catalyst, EQT Ventures, and Altimeter Capital, we're scaling with a clear ambition: to become the global category leader in enterprise-grade conversational AI.
 
 
 Parloa is committed to upholding the highest data protection standards for our clients' and employees' data. All our employees are instrumental in ensuring the utmost care, GDPR, and ISO compliance, including ISO 27001, in handling sensitive information.
 
 
 Parloa is an e-verify employer in the USA. Please click here to learn more.
 
 
 <ul>
 <li>
 We provide equal opportunities to all qualified applicants regardless race, gender, sexual orientation, age, religion, national origin, disability status, socioeconomic background and other characteristics.
 </li>
 </ul>
</div>

Senior Backend Engineer

SumUp

<div>About the team
SumUp&rsquo;s Point-of-Sale (POS) solution empowers cafes, shops, bars, hair salons, and other businesses to operate efficiently and grow. It offers a wide range of features, including product catalogs, inventory management, business analytics, compliance support, and loyalty tools.
Our Fiscalization team will accelerate making the following countries fiscally compliant: Italy, Sweden, Norway, Belgium, Austria, and many other European countries. They will also start building the path for integrating with third parties and fiscalizing receipts.
As a Senior Backend Engineer, you&rsquo;ll collaborate with a dynamic, cross-functional team of Product Managers, Product Designers, Engineering Managers, and fellow engineers.
About the role
You will be working on secure backend systems to ensure our SumUp&rsquo;s Point of Sale (POS) products are compliant in the different countries in our roadmap. Furthermore, you will work with the Fiscalization squad to understand the challenge in each market to design a unique solution to delivery.
You&rsquo;re a developer who values user-centric design, precision, and seamless collaboration. You bring structure to communication and thrive in a cross-functional environment.
This is also an onsite role based in Berlin.
What you&rsquo;ll do
<ul><li>Build and maintain fiscal compliance solutions to enable SumUp's expansion across Italy, Sweden, Norway, Belgium, Austria, and other European markets.
</li><li>Develop integrations with third-party services for receipt fiscalization and regulatory reporting systems.
</li><li>Navigate SumUp's complex POS ecosystem and master fiscalization frameworks across multiple jurisdictions.
</li><li>Collaborate with distributed squad members and stakeholders across 5+ cities in a hybrid environment.
</li></ul>You&rsquo;ll thrive in this role if:
<ul><li>You have 5+ years experience in backend engineering with Java and/or Kotlin.
</li><li>You have a strong understanding of fundamental system architecture, design principles, data modeling, and API design.
</li><li>You have a strong experience with distributed and fault-tolerant systems.
</li><li>You have user-level experience working with AWS and Kubernetes.
</li><li>You have good knowledge of Kafka &amp; Postgres &amp; CQRS.
</li></ul>Why you should join SumUp
<ul><li>A dedicated annual Learning &amp; Development budget for attending conferences and/or advancing your career through further education
</li><li>Enrollment onto our virtual stock ownership program - you will own a stake in SumUp&rsquo;s future success
</li><li>A corporate pension scheme
</li><li>28 days paid leave + 1 for birthday
</li><li>You&rsquo;ll attend global offsites and/or hackathons.
</li><li>You'd enjoy other great benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidized office lunches and other location-tailored benefits, Babbel language platform subscription and more!
</li></ul>Job Application Tip
We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don&rsquo;t tick every box, it&rsquo;s ok too because it means you have room to learn and develop your career at SumUp.</div>

Senior Backend Engineer - Fiscalization

Getsafe GmbH

<div><h4 class="jobSectionHeader">Building insurance people actually love</h4>
Getsafe guides people to make smart life choices with personalized digital insurance. 
 
We&rsquo;re reinventing insurance from the ground up: with our own tech platform and a single app that unites property, life, and health coverage in one seamless experience. Features like family accounts, AI-powered guidance, instant claims handling, and our prevention program &ldquo;Safepoints&rdquo; make insurance simple, transparent, and built for today.<div> 
Since our launch in 2018, we&rsquo;ve grown from our headquarters in Heidelberg and office in Berlin to serving more than 500,000 customers across Germany, Austria, and France. Backed by &euro;120M from leading investors such as Earlybird, CommerzVentures, and Swiss Re, we&rsquo;ve become one of Europe&rsquo;s fastest-growing insurtechs.</div> 
Learn more about us on our Website, Instagram or on LinkedIn.<h4 class="jobSectionHeader"> 
What we're looking for</h4>
We are seeking an experienced Senior Backend Engineer to join our growth team. Our growth team&rsquo;s mission is to keep our customers and operations teams happy by building the Insurance Platform parts used for insurance product launches, policy administration, marketing and sales.
In this role, you will work on backend features of our insurance platform while also contributing to internal tools and automation that improve efficiency for engineering and other teams across the company. This includes building systems and emerging agentic tooling that streamline workflows, reduce operational overhead, and enable teams to move faster.<h4 class="jobSectionHeader"> 
What you will do</h4><ul><li>
Collaborate with the team and stakeholders to define and implement the vision for a scalable system architecture for our insurance platform that supports our growing portfolio and customer base.</li><li>
Own and contribute to our evolving list of internal tools starting with Ruby libraries and agentic tools in engineering and beyond.</li><li>
Write clean, maintainable, and well-documented code that promotes best practices and enables others.</li><li>
Explore and propose new technologies to streamline processes and improve system efficiency.</li><li>
Champion engineering best practices and help elevate our tech stack to the next level, setting standards for the organization.</li><li>
Create reusable solutions that help teams scale faster and avoid one-off workarounds.</li></ul><h4 class="jobSectionHeader"> 
What you bring</h4><ul><li>
Experience: 5+ years of backend development experience, working on complex systems and platform solutions.</li><li>
Strong passion for building, maintaining, and improving platform tooling, libraries, solutions, and processes that empower multiple engineering teams and enhance the overall developer experience.</li><li>
Ruby on Rails: Solid experience with Ruby on Rails and a deep understanding of how to develop high-quality, reliable software.</li><li>
Agentic Engineering: Good understanding of working with coding agents from planning to delivery.</li><li>
Collaboration: Strong communicator, able to work across teams and translate technical vision into actionable plans.</li><li>
Problem-Solving: You can break down complex problems into manageable parts and communicate solutions clearly to your team and other stakeholders.</li><li>
Quality-Driven: Commitment to delivering solutions that are well-tested, reliable, and maintainable.</li><li>
Experience with Terraform, Kubernetes and AWS is a plus.</li><li>
Proven experience in fintech environments or startups is a plus.</li></ul><h4 class="jobSectionHeader"> 
Our stack</h4><ul><li>
Distributed architecture of 10+ independent RESTful services</li><li>
Ruby on Rails</li><li>
PostgreSQL, Kafka, Sidekiq, Redis</li><li>
Terraform, Qovery (Kubernetes) and AWS</li><li>
Datadog</li></ul><h4 class="jobSectionHeader"> 
How we work</h4><div>
Customer Empathy 
We simplify insurance by aligning our vision with every interaction, maintaining transparency, and building togetherness and trust with our customers.</div><div></div><div> 
Absolute Ownership 
We pursue excellence relentlessly, taking full ownership, and ensuring everyone knows their role to contribute to our mission.</div><div></div><div> 
Day One Mindset 
We strive to continually act as pacemakers, constantly optimising, thinking ahead, and inspiring greatness to build a scalable and impactful future.</div><div></div> 
Driver Team 
We communicate effectively, collaborate positively, and drive success as equals, united by respect and an inspiring mission.<h4 class="jobSectionHeader"> 
What we offer</h4><ul><li>
Front row seat at one of Europe&rsquo;s leading insurtechs that redefines how millions of people experience insurance every day</li><li><div>
Diverse and high-performing team that thrives on ownership, speed, and constantly raising the bar</div></li><li><div>
Hybrid or on-site setup across our hubs in Heidelberg (Europaplatz) and Berlin (Eberswalder Stra&szlig;e)</div></li><li><div>
Competitive salary plus company-wide VSOP program</div></li><li><div>
Claude Max and the latest hardware and productivity tools</div></li><li><div>
&euro;1,000 annual development budget</div></li><li><div>
&euro;50 monthly benefit budget</div></li><li><div>
Monthly Getsafe insurance voucher</div></li><li><div>
28 vacation days plus birthday and December 24th &amp; 31st off</div></li><li><div>
90 workation days within the EU</div></li></ul> 
We're looking for great people, not perfect r&eacute;sum&eacute;s. If you're excited about what we're building and think you could make a great addition to the team, we encourage you to apply &ndash; even if you don't meet every single requirement. We'd love to hear from you! 
 
We welcome applications from people of all backgrounds, experiences, and perspectives. We believe diverse teams build better products and are committed to creating an inclusive environment where everyone can thrive. We do not discriminate based on race, religion, colour, national origin, gender identity or expression, sexual orientation, age, disability, or any other legally protected characteristics.</div>

Senior Backend Engineer (m/f/d)

Vanilla Steel GmbH

<div><h4 class="jobSectionHeader">Your mission</h4>
We are a Berlin-based startup transforming how industrial materials are bought and sold across Europe. One of the oldest industries in the world still runs on Excel, PDF and email. We are replacing that with AI that runs the buying and selling workflow end to end, increasing liquidity, speeding up transactions and reducing waste for hundreds of steel and metal distributors. 
 
We have strong early traction, real enterprise customers and committed investors. We are a lean, technical team scaling our enterprise pilots and building the AI infrastructure underneath them. 
 
Your job as Senior Product Engineer is to make sure we deliver on that traction and stay ahead. You partner closely with Co-founder Simon, who owns sales; you own that we ship, that enterprise customers succeed, and that the product stays in front. This is a senior, hands-on role with three pillars. 
 
1. Build and ship with AI 
<ul><li>
Ship production software using AI as a force multiplier &mdash; prototypes, integrations, customer-facing flows &mdash; and get them live, not just specified.</li><li>
Move our AI from assisting people to running the buying and selling workflow as autonomous agents.</li><li>
Integrate our pipeline deep into customer systems and ERPs (SAP, Odoo, Microsoft Dynamics), and design for fast onboarding so a new customer reaches value in days, not months.</li><li>
Our stack: Python, FastAPI, Pydantic AI, Pydantic Logfire, JavaScript/Node, React, GCP, Kubernetes. You won't be expected to master all of it on day one, but you should be comfortable navigating it with AI tooling.</li></ul>
2. Lead technical communication with enterprise customers 
<ul><li>
Own the technical relationship with three to five enterprise customers: run the discovery workshops, scope the work, run first-line UAT, and steer executive, procurement and IT conversations.</li><li>
Translate customer reality into clear build decisions and engineering reality into clear customer expectations. Hold the line on scope when a request will not move the metric that matters.</li><li>
Represent the product credibly to senior stakeholders, and to investors when a customer also sits on our cap table.</li></ul>
3. Help build the product org 
<ul><li>
Drive the shipping cadence: a weekly or biweekly release rhythm with engineering, and sequence delivery against engineering capacity with our Head of Tech.</li><li>
Make the strategic product calls &mdash; what we build next, and what we deliberately do not.</li><li>
As we scale enterprise customers, help grow how the team works and the product function around you.</li></ul><h4 class="jobSectionHeader">
Your profile</h4>
You are a builder who ships with AI and can run an enterprise customer relationship and help shape how we build. Two non-negotiables: technical capability and product sense. Everything else sits behind those. 
<ul><li>
Excellent written and verbal communication in English and in German (C1 or C2 must have, native not required). You can run a technical workshop with a German industrial customer end to end.</li><li>
Berlin-based or willing to relocate. The role also includes regular travel to customer sites in Central Germany (~2&ndash;3 days per month).</li><li>
5+ years building product, with at least 2 years in genuinely technical roles (engineering, technical PM at a real engineering company, solutions architect, forward-deployed engineer).</li><li>
Deep LLM/AI experience: you build and ship real software with LLMs and agents in production, not just prototype or chat with them. You can walk us through something you shipped and how you built it. Bonus if you have shipped an agentic or autonomous system.</li><li>
AI coding tools: you use Cursor, Claude Code or comparable as your primary development environment - not occasionally, but as the way you build. This is how you ship independently without engineering support.</li><li>
Strong technical instincts: you read code, evaluate an architecture, and hold your own in a design review with engineering.</li><li>
First-line UAT discipline: you have personally signed off (or rejected) enterprise releases and can describe the framework you used.</li><li>
Comfortable owning several enterprise customers in parallel without dropping balls, and pushing back on scope when needed.</li><li>
Able to simplify complexity and make fast, sound decisions under pressure.</li></ul>
Nice-to-have: background in an AI-first company; ERP integrations (SAP, Odoo, Microsoft Dynamics) or procurement / order-management workflows; early-stage or founding-engineer experience, industrial B2B, metals, supply chain or manufacturing experience.<h4 class="jobSectionHeader">
Why us?</h4><ul><li>
Ownership of named enterprise accounts, judged on outcomes rather than hours.</li><li>
Direct technical impact: you see what you ship in production within weeks.</li><li>
Senior co-founders who are technical operators, not pitch-deck founders. Decisions happen fast.</li><li>
Competitive base, performance bonus, and meaningful equity at a Series A company.</li><li>
Regular travel to customer sites (mainly Central Germany).</li><li>
Subsidised Urban Sports Club membership and Deutschlandticket.</li><li>
Hybrid work format, office in the heart of Prenzlauer Berg, Berlin.</li><li>
Regular team events, company breakfasts and Friday drinks.</li></ul><h4 class="jobSectionHeader">
About us</h4>
We are a Berlin-based startup that has successfully established a leading digital-first trading company for industrial metals across Europe.
The multi-billion-euro metal trading industry is operated on Excel, PDF and Email. Our mission is to integrate smart technology and data to drive every decision, transaction, and workflow in the steel industry. Our technologies &amp; services increase liquidity, accelerate transactions, reduce scrapping rates and enhance trading convenience for hundreds of steel and metal distributors across Europe.</div>

Senior Product Engineer

Kayzen

<div><h3 class="jobSectionHeader">Fullstack Engineer (m/f/d)</h3>

Berlin, Bangalore, Remote

Hello I am Servesh, Co- founder and CTO at Kayzen, and I am now looking for a Fullstack Engineer to join our Console team. But wait, you have not heard of Kayzen before?

Kayzen is a mobile demand-side platform (DSP) dedicated to democratizing programmatic advertising. We enable leading apps, agencies, media buyers, and brands to run programmatic customer acquisition, retargeting, and brand performance campaigns through its self-serve and managed service options. Built on the three core pillars of performance, transparency, and control, Kayzen powers the world's best mobile marketing teams with bespoke solutions that fuel business growth and deliver a competitive advantage. With an unprecedented scale of 160B+ daily ad requests from 1.6B+ unique users worldwide, we serve up to 1B+ ads per day in 180 countries. Kayzen is accessible through our APIs and user interface.

The Team

The Console team owns the user-facing applications and interfaces that power the Kayzen platform &mdash; from our self-serve campaign management dashboard and real-time reporting suite to internal tooling used by our managed service teams. We work closely with product managers, designers, backend engineers, and data teams to deliver seamless, high-performance experiences. We are responsible for some of the most impactful work at Kayzen, including:
<ul>
<li>&quot;The Console&quot; which is the face of Kayzen we are very proud of.</li>
<li>Complex features which surface a lot of backend infrastructure via console</li>
<li>Almost 100% uptime with very well planned &amp; executed project management</li>
</ul>
Sounds interesting. Isn't it?

About the Role

We are looking for a coding-first Fullstack Engineer who thrives on turning complex product requirements into high-performance UIs. You should be comfortable working across the stack, contributing to architecture discussions, and be an early adopter of AI-assisted engineering (e.g., Claude Code, Cursor, Copilot) in your daily coding workflow. This role is a strong individual contributor position with room to grow into deeper technical ownership over time.

Responsibilities
<ul>
<li>Core responsibilities</li>
<li><ul><li>Design, build, and maintain high-quality features across the Fullstack stack, from UI to API integration</li>
<li>Write clean, well-tested, production-ready code and actively participate in code reviews</li>
<li>Collaborate closely with Product, Design, QA, and Backend teams to deliver cohesive, user-centric features</li>
<li>Contribute to technical decisions around architecture, tooling, and best practices within the team</li>
<li>Take ownership of features end to end, from planning through deployment and monitoring</li>
</ul></li><li>Hands-on AI Implementation</li>
<li><ul><li>Integrate AI-powered coding agents and automated LLM-based testing into your daily development cycle</li>
<li>Contribute to building 'AI-First' UI patterns, working alongside the LLM Platform team on generative, prompt-driven interfaces</li>
<li>Stay current with emerging AI-assisted development tools and bring relevant ones back to the team</li>
</ul></li><li>Project &amp; Execution Management</li>
<li><ul><li>Break down assigned product requirements into clear, actionable engineering tasks</li>
<li>Deliver work reliably within sprint commitments, flagging blockers or scope changes early</li>
<li>Balance new feature delivery with addressing technical debt in the codebase you work on</li>
</ul></li>
</ul>Requirements
<h4 class="jobSectionHeader">
Fullstack Technical Excellence (Core Focus)</h4>
<ul><li>5+ years of professional Fullstack development experience with modern JavaScript/TypeScript</li>
<li>Solid expertise in at least one major framework (React, Angular, or Vue) and its ecosystem</li>
<li>Strong understanding of HTML5, CSS3, responsive design, and cross-browser compatibility</li>
<li>Experience building data-heavy UIs, ideally including real-time data visualization</li>
<li>Good grasp of Fullstack performance optimization, including bundle size, rendering, lazy loading, and caching strategies</li>
<li>Experience with state management patterns (Redux, MobX, Zustand, or similar)</li>
<li>Working knowledge of Fullstack testing methodologies, unit, integration, and end-to-end (Jest, Cypress, Playwright, or similar)</li>
<li>Comfortable working with design systems and shared component libraries</li>
<li>Experience using AI-assisted development tools (e.g., Claude Code) to boost engineering productivity</li>
</ul><h4 class="jobSectionHeader">Engineering Maturity</h4>
<ul><li>Experience contributing to Fullstack architecture decisions on production applications</li>
<li>Solid understanding of APIs, RESTful services, GraphQL, and system design fundamentals</li>
<li>Ability to give and receive constructive feedback through code reviews</li>
<li>Good communication skills, able to explain technical decisions clearly to teammates and stakeholders</li>
</ul><h4 class="jobSectionHeader">Startup Mindset</h4>
<ul><li>Bias for shipping and iteration, you deliver incrementally and learn from real users</li>
<li>Comfortable with ambiguity and rapid change in a fast-paced environment</li>
<li>Thinking in terms of leverage and reuse, not one-off solutions</li>
<li>Pragmatic about trade-offs between perfectionism and speed of delivery</li>
</ul><h4 class="jobSectionHeader">Less About</h4>
<ul><li>Developers who prefer working in isolation on narrowly scoped tickets without engaging with the wider product context. We need someone who wants to understand the &quot;why&quot; behind the work and contribute ideas, not just execute tasks.</li>
</ul><h4 class="jobSectionHeader">Nice to Have</h4>
<ul><li>Familiarity with ad-tech, real-time bidding platforms, or high-traffic data products</li>
<li>Contributions to open-source Fullstack projects or community involvement</li>
<li>Experience building Fullstack interfaces for AI/ML-powered products (e.g., chatbots, recommendation engines, AI-generated content displays)</li>
<li>Familiarity with LLM APIs and prompt-driven UI patterns</li>
</ul>
What do we offer?
<ul>
<li>Exceptional career growth and learning opportunity</li>
<li>A unique opportunity to be part of an experienced team of industry experts and entrepreneurs who bring massive change to the Adtech market</li>
<li>A fun, driven, and multinational team located across Germany, India, UK, Argentina, Ukraine, Turkey, Spain and many more countries</li>
<li>A flexible work-from-home arrangement</li>
<li>A 500-dollar home-office setup budget</li>
<li>A 1000-dollar annual learning and development budget</li></ul></div>

Fullstack Engineer (m/f/d)

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