software engineer backend

BETA Systems Software AG

<div><div><div><div><div><h2 class="jobSectionHeader"><b>&Uuml;ber uns</b></h2></div><div><p>
Wir sind ein unabh&auml;ngiger, mittelst&auml;ndischer Softwareanbieter. 50 Prozent der gr&ouml;&szlig;ten europ&auml;ischen Banken sowie &ouml;ffentliche Einrichtungen und Unternehmen aller Branchen sichern ihre sensiblen Gesch&auml;ftsprozesse mit unseren L&ouml;sungen ab.</p><p>
Hochwertige Softwareprodukte im Bereich <b>Sicherheit und Nachvollziehbarkeit in der IT</b> und zur automatisierten Verarbeitung gr&ouml;&szlig;ter Daten- und Dokumentenmengen lassen uns als deutsches Unternehmen zu einem der <b>f&uuml;hrenden Mittelst&auml;ndler in Europa</b> z&auml;hlen.</p><p>
Es gibt deutschlandweit vier Standorte in <b>Berlin, M&uuml;nchen, K&ouml;ln und Neustadt an der </b>Weinstra&szlig;e. Zus&auml;tzlich gibt es &uuml;ber 20 Tochtergesellschaften weltweit.</p><p>
Wir sind ein f&uuml;hrender Anbieter im Bereich Identity &amp; Access Management und unterst&uuml;tzen Unternehmen dabei, ihre digitale Sicherheit effizient zu gestalten. Unsere L&ouml;sungen erm&ouml;glichen es, Nutzeridentit&auml;ten zentral zu verwalten, Zugriffe zu kontrollieren und Compliance-Anforderungen zu erf&uuml;llen. Zur Verst&auml;rkung unseres Entwicklungsteams am Standort Berlin suchen wir ab sofort einen:</p><p><b>
Senior Software Engineer (Backend) (m/w/d)</b></p></div></div><div><div><h2 class="jobSectionHeader"><b>
Deine Aufgaben</b></h2></div><div><p>
Als Senior Backend Developer bist du Teil eines europ&auml;ischen Entwicklungsteams (Schwerpunkt Deutschland) und entwickelst moderne, skalierbare Backend-Systeme im Umfeld von Identity &amp; Access Management (IAM). Du gestaltest aktiv Architektur, Datenmodelle und Entwicklungsprozesse &ndash; inklusive des Einsatzes von KI zur Unterst&uuml;tzung in der Softwareentwicklung. Zu den wichtigsten Aufgaben geh&ouml;ren:</p><p></p><ul><li>
Entwicklung und Weiterentwicklung von Backend-Systemen auf Basis von<b> Java / Spring Boot</b></li><li>
Design und Implementierung von <b>Microservices und API-basierten Architekturen</b></li><li>
Modellierung und Optimierung von <b>Datenbanken</b></li><li>
Aufbau und Pflege von <b>CI/CD-Pipelines</b> (GitLab) sowie <b>Build- und Deployment-Prozessen</b></li><li>
Umsetzung fachlicher Anforderungen in robuste, <b>wartbare Softwarel&ouml;sungen</b></li><li>
Einsatz von <b>KI-Tools</b> zur Unterst&uuml;tzung von Entwicklung, Testing und Refactoring</li><li>
Enge <b>Zusammenarbeit</b> im agilen Team sowie <b>Mentoring </b>von Kollegen</li></ul></div></div><div><div><h2 class="jobSectionHeader"><b>
Dein Profil</b></h2></div><div><ul><li>
Begeisterung und Leidenschaft f&uuml;r die Softwareentwicklung</li><li>
Nachweisliche Erfahrung als Senior Software Engineer</li><li>
Mehrj&auml;hrige Erfahrung in der Backend-Entwicklung mit Java / Spring Boot</li><li>
Erfahrung mit GitLab CI/CD, Build- und Deployment-Prozessen</li><li>
Erfahrung mit Cloud-nativen Architekturen und Microservices</li><li>
Fundiertes Verst&auml;ndnis von Softwarearchitektur, Design Patterns und Clean Code</li><li>
Praktische Erfahrung mit KI-gest&uuml;tzter Softwareentwicklung</li><li>
Strukturierte, eigenverantwortliche Arbeitsweise und ausgepr&auml;gte Teamf&auml;higkeit</li><li>
Gute Deutsch- und Englischkenntnisse</li></ul></div></div><div><div><h2 class="jobSectionHeader"><b>
Was wir anbieten:</b></h2></div><div><ul><li>
Unbefristeter Arbeitsvertrag und 30 Tage Urlaub</li><li>
Flexible Arbeitszeiten, Homeoffice-Option und moderne Arbeitsmittel</li><li>
Betriebliche Altersvorsorge, die von uns bezuschusst wird</li><li>
Arbeitgeberfinanzierte Unfall- und Berufsunf&auml;higkeitsversicherung</li><li>
Zuschuss zum Jobticket</li><li>
Fahrrad-Leasing mit Zuschuss</li><li>
Kontinuierliche Weiterbildungs- und Weiterentwicklungsm&ouml;glichkeiten</li><li>
Exklusive Mitarbeiterangebote mit Sonderkonditionen f&uuml;r Produkte und Leistungen renommierter Hersteller und Marken</li><li>
Eine angenehme und lockere Arbeitsatmosph&auml;re mit gelebter Du-Kultur</li><li>
Ein betriebliches Gesundheitsmanagement (Yoga- und R&uuml;ckenfitkurse, Psychologie- und Facharztservice doQtor)</li></ul></div></div><div><div><h2 class="jobSectionHeader"><b>
Kontakt</b></h2></div><div><p>
Haben wir Dein Interesse geweckt?</p><p>
Dann bewirb Dich &uuml;ber unseren Online-Bewerberbogen. Wir freuen uns!</p><h2 class="jobSectionHeader"><b>
Garancy AG</b></h2><p>
Vivien B&ouml;hm<br>
Human Resources</p></div></div></div></div></div><div></div>

Senior Software Engineer (Backend) (m/w/d)

idealo internet

<div><p>Reliable data, resilient services and scalable architectures are at the heart of every CRM interaction at idealo. As a <b>Staff Engineer,</b> 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.</p><p></p><p>
This role combines <b>backend engineering, data engineering and architectural leadership</b>. 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.</p><p></p><p>
You'll work with <b>Java, Spring Boot, Kafka and AWS services including Snowflake, Glue and S3 in a modern cloud-native architecture</b>. 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.</p><p>
The position is available in full or part-time.
</p><p></p><h3 class="jobSectionHeader"><b>About your new role</b></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"><b><br>
Skills &amp; Requirements</b></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><p></p><h3 class="jobSectionHeader"><b>
At idealo you can expect</b></h3><ul><li><b>
You want to further your education?</b> 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><b>
And what about the office? </b>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><b>
In need of additional support in any areas of your life?</b> We offer free counseling and support in all areas of life (professional, private, family, health, etc.) in cooperation with the pme-Familienservice.</li><li><b>
You want full flexibility on your way to work and beyond? </b>No problem with a job bike or Deutschlandticket - and it's environmentally friendly, too!</li><li><b>
Want to keep yourself fit?</b> We offer many different fitness and sports options, such as an Urban Sports or Gympass membership, to suit your personal needs.</li><li><b>
And what else is there?</b> 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><p>
#LI-MW1</p></div><p></p>

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

ALMETRA

<div><p>We&rsquo;re looking for a backend engineer who thrives in fast-moving environments and enjoys building robust systems end-to-end. You&rsquo;ll work across data pipelines, APIs and infrastructure, ensuring our platform runs efficiently and scales cleanly as we grow.</p><p><b>
Your role</b></p><ul><li><p>
Develop and maintain backend features and APIs for our core platform</p></li><li><p>
Improve database performance, reliability and real-time data processing</p></li><li><p>
Debug, profile and optimise code to keep latency low and systems stable</p></li><li><p>
Collaborate with AI, frontend and product teams to integrate new capabilities</p></li><li><p>
Contribute to architectural decisions and shape the evolution of our backend stack</p></li></ul><p><b>
You are</b></p><ul><li><p>
5-7 years&rsquo; experience building production-grade backends (Python is a must; additional experience in Go, C++, or Java is valuable)</p></li><li><p>
Solid in SQL and data modelling (PostgreSQL or similar)</p></li><li><p>
Experienced with REST APIs and cloud environments (AWS preferred)</p></li><li><p>
Comfortable working independently and taking ownership of a problem</p></li><li><p>
Startup mindset &mdash; quick to ship, focused on quality, allergic to bureaucracy</p></li></ul><p><b>
Nice to have</b></p><ul><li><p>
Linux debugging and performance tuning</p></li><li><p>
Familiarity with orchestration (Kubernetes, Terraform, Ansible)</p></li><li><p>
Experience with data pipelines or analytical databases</p></li><li><p>
Interest in edge/cloud hybrid architectures</p></li></ul><p><b>
Why this role matters</b><br>
You&rsquo;ll help shape how data moves through our system &mdash; building fast, reliable infrastructure that powers every customer interaction.</p><p><b>
What we offer</b></p><p>
Employee Share Options Program for all permanent employees*</p><p>
An increasing benefits list: currently includes Urban Sports club and quarterly team retreats.</p><p>
Be on the forefront in defining what artificial intelligence means in manufacturing</p><p>
Gain hands-on experience in working in an AI-first software company
</p><p>Supportive and inclusive culture that values diversity and promotes the advancement of underrepresented groups within the company</p><p>
Collaborate with a diverse (currently more than 10 nationalities) and talented team, working on cutting-edge projects with real-world impact</p><p>
Network with professionals and leaders in the field, opening doors to potential future career opportunities</p><p>
We have a very flat hierarchy, open 360&deg; feedback, and flexible working hours</p><p>
Ethics: We are committed to developing ethical AI software<br>
<br>
<b>Don't meet all the requirements?</b></p><p><i>
Almetra is committed to creating a workplace that is diverse, fair, and inclusive. We encourage candidates from all backgrounds, even if they do not meet every qualification, to submit their application. We firmly believe that having a team with diverse perspectives only strengthens our company and drives innovation. Our commitment also extends to providing an accessible environment for everyone, including those with disabilities. Please let us know if you require any accommodations during the application process or while working with us, and we will do our best to support you.</i></p><ul><li><br>
<i>Only full-time, permanent roles are eligible for stock options. Part-time roles, contract roles, work-student, internships and freelance roles are not eligible for stock options.</i></li></ul><p>
Compensation Range: &euro;70K - &euro;90K</p></div>

Senior Backend Engineer (m/f/d)

Navera Community Connections

<div><h4 class="jobSectionHeader"><b>Your mission</b></h4><p><b>
About Us</b><br>
We&rsquo;re building a new kind of mortgage experience: transparent, digital, and truly customer-centric. We are a Berlin-based B2C Fintech founded by two repeat founders (YC alum, exit) with prior 10+ year careers in investment banking and strategy consulting. We recently raised investment to assemble a 30-person, exceptionally strong core team. Our culture is built on ownership and clarity. We align with you on vision, set clear KPIs and resources together, and then trust your drive and expertise.<br>
<br>
<b>The Opportunity</b><br>
Buying property (and financing it) is probably the biggest financial decision in someone's life. It's complicated and opaque. As a Senior Backend / DevOps Engineer, you will work alongside our CTO on building and evolving our fintech product. Our core architecture and cloud infrastructure are already in place and running in production &mdash; you&rsquo;ll spend roughly 70% of your time shipping backend features and 30% on infrastructure and operations. You&rsquo;ll have significant autonomy to shape how we build, deploy, and scale.</p><h4 class="jobSectionHeader"><b>
Your profile</b></h4><p><b>
What You&rsquo;ll Do</b></p><br>
<ul><li>
Developing backend features and APIs within our microservices architecture</li><li>
Designing and implementing event-driven patterns and workflow orchestration</li><li>
Working with PostgreSQL &mdash; schema design, migrations, query optimization</li><li>
Integrating with external APIs (mortgage platforms, CRM, document processing)</li><li>
Extending cloud infrastructure (Terraform, Helm) for new services and capabilities</li><li>
Improving CI/CD pipelines and deployment processes</li><li>
Implementing monitoring, logging, and observability systems</li><li>
Optimizing system performance, reliability, and scalability</li><li>
Collaborating on technical decisions and architecture evolution</li><li>
Ensuring code quality, security, and operational best practices</li></ul><br>
<b>
Our Stack</b><br>
<ul><li>
Backend: Node.js, TypeScript</li><li>
Database: PostgreSQL, Redis</li><li>
Orchestration: Temporal for durable workflows</li><li>
Architecture: Event Driven Microservices Architecture</li><li>
Monitoring: Prometheus &amp; Grafana</li><li>
Cloud: GCP</li><li>
Infrastructure: Terraform, Helm, GitHub Actions CI/CD, Cloudflare</li><li>
AI/ML: LLM integrations</li></ul><b>
What You Bring</b><br>
<br>
<b>Hard Requirements</b><ul><li>
Strongly-Typed Backend Language: Strong proficiency in at least one strongly-typed, compiled or strictly-typed language (e.g., Go, TypeScript, Rust, Java, C#, Kotlin) for building high-performance backend services. Solid grasp of async patterns, concurrency, and performance optimization.</li><li>
Event-Driven Architecture: Deep, hands-on experience designing and implementing event-driven systems with messaging patterns (Kafka, RabbitMQ, GCP Pub/Sub, or Redis Streams). You understand eventual consistency, saga patterns, and can articulate trade-offs.</li><li>
Microservices Architecture: Proven track record building, deploying, and scaling microservice-based systems in production. You know when to split services, how to handle distributed transactions, and how to avoid common microservices pitfalls.</li><li>
GCP Hands-On Experience: Real production experience with GCP, not just familiarity. You&rsquo;ve worked with GKE, Cloud SQL, Memorystore, Cloud Storage, Secret Manager, and can navigate the GCP ecosystem confidently.</li></ul><br>
<b>
Additional Technical Skills</b><ul><li>
Extensive experience with SQL databases (PostgreSQL preferred)</li><li>
Strong foundation in RESTful API design</li><li>
Proficiency with containerization (Docker) and orchestration (Kubernetes)</li><li>
Experience with CI/CD tools (GitHub Actions, Cloud Build, or similar)</li><li>
Infrastructure as Code with Terraform or similar tools</li><li>
Node.js/TypeScript experience is a plus (our current backend stack)</li><li>
Understanding of observability: structured logging, distributed tracing, metrics, and alerting</li><li>
Knowledge of API security, authentication/authorization (OAuth 2.0, JWT), and data protection</li><li>
Experience with workflow orchestration (Temporal or similar) is a strong plus Mindset &amp; Approach</li>
0<li> 1 Production Experience: You&rsquo;ve been through production launches before and know what it takes &mdash; setting up infrastructure, handling edge cases, ensuring reliability, and managing the inevitable surprises.</li><li>
Pragmatic Perfectionism: You balance technical excellence with business velocity, you know when to refactor and when to ship quickly.</li><li>
Ownership Mentality: You&rsquo;re proactive, resourceful, and accountable for your work, you don&rsquo;t wait to be told what to do.</li><li>
Team Player: You collaborate well with others, give and receive feedback gracefully, and elevate those around you.</li><li>
Systems Thinking: You understand how components interact, design for reliability and maintainability, and think beyond your immediate feature.</li><li>
Clear Communication: You can explain technical decisions to non-technical stakeholders, document your work, and participate constructively in technical discussions.</li><li>
Continuous Learner: You stay current with industry trends, experiment with new technologies, and are energized by technical challenges.</li></ul><p></p><h4 class="jobSectionHeader"><b>
Why us?</b></h4><p><b>
What We Offer</b></p><br>
<ul><li>
Competitive salary: &euro;85,000 - &euro;100,000</li><li>
Participation in our employee options programme</li><li>
On-site in Berlin, with flexible remote work as you see fit</li><li>
High autonomy, low politics, fast decision-making</li><li>
The chance to help build something new, with real influence on how people buy homes in Germany!</li></ul><p></p><h4 class="jobSectionHeader"><b>
About us</b></h4><p><i>
We are an equal opportunity employer. We value diversity and are committed to an inclusive environment for all employees. If you are excited about the role but don't meet 100% of the requirements, we would still love to hear from you.</i></p></div>

Senior Backend & DevOps Engineer (Typescript, Kubernetes & GCP) f/m/d

<div><h2 class="jobSectionHeader"><b>About the Opportunity</b></h2>
<p>
We are seeking a Junior Backend Engineer to join the Data Ingestion Team within the Platform Engineering Domain. This is an exciting opportunity for an early-career engineer to grow their skills building high-throughput data processing systems.</p>
<p>
Platform Engineering's mission is to provide trusted, performant, and self-service platforms. As part of this, the Data Ingestion team is responsible for building and maintaining the pipelines that power our bank's data ecosystem, focusing on reliability, scalability, and clean engineering practices.</p>
<p>
The ideal candidate is an eager learner who is excited to dive into new technologies and solve technical challenges with the support of a senior team. We value engineers who are self-driven, seek constructive feedback, and thrive in a collaborative environment that prizes technical growth.</p>
<h2 class="jobSectionHeader"><b>
In this role, you will:</b></h2>
<ul><li>Software Development: Work under the guidance of senior engineers to develop and maintain backend services for our data ingestion platform.</li>
<li>Engineering Support: Support the team in applying strong engineering practices including writing automated tests, participating in code reviews, and maintaining observability.</li>
<li>Proactive Learning: Proactively ask questions, propose small improvements, and collaborate with the team to deliver clean, testable code for our platform services.</li>
<li>Knowledge Sharing: Participate in technical discussions, contribute to internal documentation, and help us maintain a transparent knowledge base.</li>
<li>Development Contribution: Contribute to infrastructure development tasks and participate in technical demos to showcase your work.</li>
<li>Shadow and Respond: Shadow on-call rotations and assist in troubleshooting efforts to learn incident response protocols.</li>
<li>Observability Support: Learn to maintain and use observability solutions (metrics, logging, tracing) to help the team track platform SLOs and availability.</li>
</ul><h2 class="jobSectionHeader"><b>What you need to be successful</b></h2>
<h3 class="jobSectionHeader"><b>Background and Skills:</b></h3>
<ul><li>Strong foundational backend skills, with a preference for Kotlin or Java, and a willingness to adapt to the language best suited for the task.</li>
<li>Exposure to data storage solutions such as PostgreSQL, RDS, or S3.</li>
<li>Basic knowledge of containers (Docker) and an eagerness to learn Kubernetes.</li>
<li>Exposure to infrastructure as code concepts (Terraform or similar).</li>
<li>Interest in learning CI/CD pipelines and modern automation tools.</li>
<li>Understanding of testing pyramids and experience writing unit and integration tests.</li>
<li>Familiarity with at least one observability/monitoring tool (e.g., DataDog, Prometheus, or Grafana).</li>
</ul><h3 class="jobSectionHeader"><b>Nice to have:</b></h3>
<ul>
<li><p>Working experience in scale-ups within platform teams.</p>
</li>
</ul><h3 class="jobSectionHeader"><b>Traits:</b></h3>
<ul><li>Excellent collaboration and communication skills, with the ability to work across teams.</li>
<li>You enjoy taking tasks from start to finish and keeping the team updated on your progress.</li>
<li>A keen interest in understanding how to build high-quality, scalable, and secure infrastructure.</li>
<li>Eagerness to learn and contribute to building platforms as products.</li>
<li>A proactive approach to problem-solving, a desire to learn, and an appreciation for clean code.</li>
</ul><h2 class="jobSectionHeader"><b>What's in it for you:</b></h2>
<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>Come together with your team in the office for a dedicated day of teamwork each week, plus another day of your choice, and enjoy the flexibility of remote work the rest of the time. <i>Some roles may require additional in-office presence</i>.</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, life experiences and backgrounds.</li>
</ul><h2 class="jobSectionHeader"><b>Who we are</b></h2>
<p>
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.</p>
<p>
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.</p>
<p>
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.</p>
<p><b>
Sounds good? Apply now for this position.</b></p>
<p><b>
Equal Opportunities:</b></p>
<p>
We recognize that our strength lies in our people and the varied perspectives they bring to our workforce. We strive to build talented and diverse teams to drive our business success and empower our people to reach their full potential.</p>
<p>
We genuinely welcome and encourage applications from people of all backgrounds, cultures, genders, sexual orientations, abilities, neurodiversities, and ages. We're committed to creating an inclusive workspace where everyone feels valued and respected, free from harassment and discrimination. If there's anything you need to make the application process work for you, please let us know by reaching out to candidate.exp@n26.com.</p>
<p>
Visit our website to learn more about Diversity, Equity, &amp; Inclusion at N26.</p></div>

Junior Backend Engineer - Data Ingestion

<div><p><b>In short
</b></p><p>At On, retail isn&rsquo;t just a channel&mdash;it&rsquo;s an experience. As we scale our global footprint, we&rsquo;re laying the foundation for a future-ready Point of Sale (POS) ecosystem. To do that, we need robust backend systems that orchestrate flawless integration between the physical and digital, the store and the cloud. We&rsquo;re looking for a Backend Engineer to drive the integration of our POS platform with mission-critical systems like ERP, OMS, CRM, and loyalty engines. You&rsquo;ll architect and build resilient services, shape our event-driven data flows, and ensure our store operations stay fast, reliable, and future-proof. Based in Berlin, you&rsquo;ll be joining the Retail Experience team&mdash;where technology meets the shop floor and every request matters. If you love crafting clean APIs, streamlining integrations, and optimizing real-world system performance, you&rsquo;ll feel right at home.
</p><p><b>Your Mission
</b></p><ul><li>Backend &amp; Integration Engineering:
</li></ul><p>Design, build, and scale backend services that power POS integrations across ERP, eCom, CRM, inventory, and loyalty platforms Develop REST and GraphQL APIs that are performant, secure, and easy to consume Implement real-time and batch data sync, authentication flows (OAuth, SSO), and secure event pipelines
</p><ul><li>Architecture &amp; Resilience:
</li></ul><p>Contribute to the design of a cloud-native, event-driven architecture for global retail operations Build scalable integration patterns using message queues (Kafka, RabbitMQ) and serverless workflows Support observability through proactive monitoring, alerting, and performance tuning (e.g., NewRelic)
</p><ul><li>Testing &amp; Quality Automation:
</li></ul><p>Ensure reliability through a robust automated testing stack: contract tests, load tests, and test data pipelines Collaborate with QA and DevOps to streamline CI/CD and improve release confidence Participate in incident response and post-mortem analysis to continuously harden platform stability
</p><ul><li>Collaboration &amp; Strategy:
</li></ul><p>Partner with frontend, product, and vendor teams to align integration design with platform capabilities Influence technical decisions during vendor evaluations and rollout phases Impact roadmap decisions by sharing technical insights and platform implications Actively contribute to the broader architecture vision for On&rsquo;s composable commerce technology stack
</p><p><b>Your story
</b></p><ul><li><p>3+ years of backend engineering experience with modern technologies (Node.js, TypeScript, or similar)
</p></li><li><p>Proven track record integrating APIs across commerce, ERP, OMS, or CRM domains
</p></li><li><p>Familiar with headless commerce, microservices, and composable architecture principles
</p></li><li><p>Experience with message brokers (Kafka) and asynchronous data processing
</p></li><li><p>Solid understanding of databases (e.g., PostgreSQL) and infrastructure-as-code tools (Terraform)
</p></li><li><p>Skilled in designing, scaling, and monitoring cloud-native services (AWS, GCP, or Azure)
</p></li><li><p>Familiarity with OAuth2, token-based authentication, and secure service design
</p></li><li><p>Strong debugging and telemetry skills: logs, traces, metrics, and real-time alerting
</p></li></ul><p><b>What to expect
</b></p><p>We want to set everyone up for success, so here&rsquo;s the lowdown on how we hire. Our process is a two-way street &ndash; bringing you into our culture, while helping us learn how you think.
</p><p>Our full process can last about eight weeks from application to offer, because we care about getting it right. These steps explain how we usually do things.
</p><p>Before you get started, feel free to consider if you want to work with us. Strange question? Well, we give people a lot of space to navigate their day-to-day and that style isn't for everyone. We want you to be passionate about what you do and be sure this is the right fit. Because when skills and passion combine &ndash; it creates that 'Wow' moment.
</p><ul><li><p><b>Step One
</b></p><p><b>It starts with you...
</b></p><p>You'll start by submitting your application to a specific role. We try to keep this step as simple as possible. We do get a lot of applications, but we review them all. We ask that you allow around 14 days for us to come back to you with a response. If you are a good fit to the role, someone will follow up with you within that window. If you didn't receive a reply, or were unsuccessful this time around, we encourage you to look for other possible matches at On.
</p></li><li><p><b>Step Two
</b></p><p><b>Interview with a recruiter
</b></p><p>What ignites your spirit? This is where we&rsquo;ll start getting to know all about you and what makes you tick &ndash; and it&rsquo;s your first chance to get a feel for our culture. Chatting with a member of our talent team, you&rsquo;ll learn more about On and how we work. We&rsquo;ll learn about what motivates you and what you could bring to the team.
</p></li><li><p><b>Step Three
</b></p><p><b>Interview with a hiring manager
</b></p><p>Ready to dig into the details? This second interview will be held with your future manager and will focus on the specifics of the job. Together you&rsquo;ll delve into your unique skills and experiences and how they could be relevant at On. It's also a time to assess how you might feel working side-by-side. Bring any questions you have about the job, the team or anything else you might like to know &ndash; this is an open forum.
</p></li><li><p><b>Step Four
</b></p><p><b>The Case Study
</b></p><p>What's your style? This task will help us understand how you think, face a challenge and give insight into your novel ideas. Designed to give everyone their best shot, your case study is based on something you might typically experience on the job. This is your chance to show us what you&rsquo;ve got. So express yourself. Be you.
</p></li><li><p><b>Step Five
</b></p><p><b>The Experience Day
</b></p><p>Your first taste of the Oniverse. This is a time to meet some of the people you'll be working closest with. In person or virtually, you'll get a feel for the day-to-day at On and the people who make it happen. You'll chat with a few potential teammates - the conversations will be as equally driven by the role and your experience as by our values. We believe how you do things is just as important as what you do.
</p></li><li><p><b>Step Six
</b></p><p><b>The Result
</b></p><p>Are we a good fit? We&rsquo;ll get together internally to share our feedback and decide if we&rsquo;re a match. We know that job searching is a big time investment, so it&rsquo;s not a decision we take lightly. It&rsquo;s also time for you to reflect on the experience &ndash; are we the right place for you? No matter the outcome, we&rsquo;ll give you meaningful feedback.
</p></li></ul><p><b>Step One:
</b></p><p><b>It starts with you...
</b></p><p>You'll start by submitting your application to a specific role.
</p><p>We try to keep this step as simple as possible. We do get a lot of applications, but we review them all. We ask that you allow around 14 days for us to come back to you with a response. If you are a good fit to the role, someone will follow up with you within that window. If you didn't receive a reply, or were unsuccessful this time around, we encourage you to look for other possible matches at On.</p></div>

Backend Engineer – POS Platforms Integration

develop

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  <strong>
   Software Engineer | Java, AWS | Berlin | &euro;70k - &euro;85k | German B2+
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  We're looking for a talented Software Engineer with a strong background in Java and AWS to join a fast growing team in Berlin.
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  In this role, you'll develop and maintain scalable backend applications, contribute to the design of new features, and work closely with product managers, QA, and fellow engineers to deliver high-quality software. We're looking for someone who enjoys solving technical challenges, writing clean, maintainable code, and collaborating in an agile environment.
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  <strong>
   Responsibilities:
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 <ul>
  <li>
   Design, develop, and maintain high-quality Java applications and backend services
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   Build and enhance RESTful APIs and integrate with internal and external systems
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   Collaborate with cross-functional teams to deliver new features from concept through to production
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   Write clean, maintainable, and well-tested code following engineering best practices
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   Participate in code reviews and contribute to technical discussions and architectural decisions
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   Troubleshoot, debug, and optimise applications to ensure performance and reliability
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   Support continuous improvement of development processes and engineering standards
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  <strong>
   Requirements:
  </strong>
 </p>
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  <li>
   Strong commercial experience developing applications with Java
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   Experience building RESTful APIs and backend services
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   Strong cloud experience with AWS
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   Familiarity with relational databases and modern software development practices
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   Experience working in Agile/Scrum teams
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   German language skills at B2 level or above (required)
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   Strong communication skills and a collaborative mindset
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  If you're interested please get in touch ASAP!
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Senior Software Engineer

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