senior java engineer

idealo internet

<div>As a Senior Android Engineer at idealo, you drive the evolution of our award-winning e-commerce apps. We enable millions of users to do price comparison and good buying decisions on their mobile phone. We are a fully integrated and autonomous team that balances using proven technologies with cutting edge experimentation, delivering best in class user experiences and impact on idealo&rsquo;s mission. We own our code and decide on the technical direction of our products. And we need strong support to grow further.<h3 class="jobSectionHeader">
About your new role</h3><ul><li>
At idealo you are part of a team of highly motivated Android developers that strive for excellence in product and software development.</li><li>
You work closely with product owners, user experience designers, data analysts and an engineering team for our backend for frontend (BFF).</li><li>
We work as an agile team where you will be involved in product development from ideation to operating a product at scale.</li><li>
You&rsquo;re routinely working with modern technologies and practices on a high quality Kotlin codebase, allowing us to innovate fast and efficiently.</li><li>
A refined user interface is important to you, and you work closely with your UX colleagues to make features even better during implementation.</li><li>
You apply pragmatic solutions, find the right trade-offs, and seek to reduce complexity to help your team to deliver and increase leverage for the organisation.</li></ul><h3 class="jobSectionHeader"> 
Skills &amp; Requirements</h3><ul><li>
You have a deep understanding of Android development and extensive experience working with Kotlin and Kotlin coroutines.</li><li>
Experience with concepts like MVVM, Clean Code and SOLID is a must, and you know how to apply software design and architecture patterns.</li><li>
Ideally, you are experienced with implementing GraphQL APIs.</li><li>
You are passionate about writing readable, reliable, maintainable, and testable code.</li><li>
You are an open and communicative team player, curious about solving interesting and sometimes complex problems.</li><li>
You are a self-sufficient and well organised engineer, and you can expect the same from the team around you.</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-AJ1</div>

Senior Android Engineer - Kotlin (m|w|d)

wolt

<div><div><h2 class="jobSectionHeader">About Wolt</h2>

At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we're building the delivery of (almost) everything and you'll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe. 
 
Working at Wolt isn't always easy, but it's definitely exciting. Here you'll learn more, build more, and ship more than in most other companies. You'll be challenged a lot, but also have a lot of fun on the way. So, if you're a self-starter with drive and entrepreneurial spirit, this could be the ride of your life.</div> 


At Wolt, we're building products that millions of people rely on every day. Behind every great customer experience is a solid engineering foundation, and that's where you come in.

We're looking for experienced Android engineers who enjoy solving problems beyond feature development. If you're excited about building scalable mobile foundations, improving developer experience, raising engineering quality, and helping other engineers build better software, we'd love to talk.

We're also embracing a new way of building software. AI is becoming a core part of how we engineer products, and we're looking for people who are curious about how AI can improve software development, not just generate code.
<h2 class="jobSectionHeader">
What you'll be doing</h2>

As a Senior Android Engineer, you'll work on the foundations that enable product teams to deliver high-quality mobile experiences at scale.

Depending on your background and interests, your work may include:
<ul>
<li>Building and evolving Android architecture, shared libraries and platform capabilities</li>
<li>Improving developer experience through tooling, automation and better engineering workflows</li>
<li>Driving improvements in app performance, reliability and observability</li>
<li>Designing scalable systems that help teams move faster without compromising quality</li>
<li>Working closely with engineers across multiple product teams to solve shared technical challenges</li>
<li>Leading technical initiatives and helping raise the engineering bar across the organization</li>
<li>Exploring how AI can improve engineering workflows and developer productivity</li>
<li>Building reliable guardrails and tooling around AI-assisted software development</li>
</ul>
This role is ideal for someone who enjoys making other engineers more productive, thinking about long-term technical health, and solving engineering problems that have impact across multiple teams.
<h2 class="jobSectionHeader">
Our humble expectations</h2>

We're looking for engineers who have experience with most of the following:
<ul>
<li>Strong experience building Android applications with Kotlin</li>
<li>Experience designing scalable mobile architectures and shared platform components</li>
<li>Good understanding of the Android ecosystem and modern development practices</li>
<li>Experience with CI/CD, automation or developer tooling</li>
<li>Strong software design and system thinking</li>
<li>Experience collaborating across engineering teams and influencing technical decisions</li>
<li>Comfortable mentoring other engineers and driving technical initiatives</li>
<li>Excellent communication and stakeholder management skills</li>
</ul>
We'd especially love to meet engineers who:
<ul>
<li>Use AI regularly as part of their engineering workflow</li>
<li>Have experimented with modern AI development tools such as Claude Code, Cursor, Gemini, Codex, Copilot or similar</li>
<li>Are curious about agentic development workflows and AI-assisted software engineering</li>
<li>Know when to trust AI, when to challenge it, and how to build reliable engineering workflows around it</li>
</ul>
You'll stand out if you've also worked with areas such as Kotlin Multiplatform (KMP), server-driven UI, experimentation frameworks, mobile observability, or large-scale consumer mobile platforms.

This role can be based in one of our tech hubs in Helsinki or Stockholm.
<div><h2 class="jobSectionHeader">
Our Commitment to Diversity and Inclusion</h2>

We're committed to growing and empowering a more inclusive community within our company, industry, and cities. That's why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives. We believe that true innovation happens when everyone has room at the table and the tools, resources, and opportunity to excel.</div></div>

Senior Android Engineer

BETA Systems Software AG

<div><div><div><div><div><h2 class="jobSectionHeader">&Uuml;ber uns</h2></div><div>
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.
Hochwertige Softwareprodukte im Bereich Sicherheit und Nachvollziehbarkeit in der IT und zur automatisierten Verarbeitung gr&ouml;&szlig;ter Daten- und Dokumentenmengen lassen uns als deutsches Unternehmen zu einem der f&uuml;hrenden Mittelst&auml;ndler in Europa z&auml;hlen.
Es gibt deutschlandweit vier Standorte in Berlin, M&uuml;nchen, K&ouml;ln und Neustadt an der Weinstra&szlig;e. Zus&auml;tzlich gibt es &uuml;ber 20 Tochtergesellschaften weltweit.
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:
Senior Software Engineer (Backend) (m/w/d)</div></div><div><div><h2 class="jobSectionHeader">
Deine Aufgaben</h2></div><div>
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:<ul><li>
Entwicklung und Weiterentwicklung von Backend-Systemen auf Basis von Java / Spring Boot</li><li>
Design und Implementierung von Microservices und API-basierten Architekturen</li><li>
Modellierung und Optimierung von Datenbanken</li><li>
Aufbau und Pflege von CI/CD-Pipelines (GitLab) sowie Build- und Deployment-Prozessen</li><li>
Umsetzung fachlicher Anforderungen in robuste, wartbare Softwarel&ouml;sungen</li><li>
Einsatz von KI-Tools zur Unterst&uuml;tzung von Entwicklung, Testing und Refactoring</li><li>
Enge Zusammenarbeit im agilen Team sowie Mentoring von Kollegen</li></ul></div></div><div><div><h2 class="jobSectionHeader">
Dein Profil</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">
Was wir anbieten:</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">
Kontakt</h2></div><div>
Haben wir Dein Interesse geweckt?
Dann bewirb Dich &uuml;ber unseren Online-Bewerberbogen. Wir freuen uns!<h2 class="jobSectionHeader">
Garancy AG</h2>
Vivien B&ouml;hm 
Human Resources</div></div></div></div></div><div></div>

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

develop

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

Senior Software Engineer

CompuGroup Medical

<div>Als f&uuml;hrendes Unternehmen im Bereich Softwarel&ouml;sungen f&uuml;r das Gesundheitswesen sind wir in 19 L&auml;ndern t&auml;tig und besch&auml;ftigen &uuml;ber 9.000 engagierte Mitarbeitende. Du wirst in einem dynamischen und innovativen Umfeld arbeiten, das voller M&ouml;glichkeiten steckt. Mit Deinem Einsatz und Deiner Leidenschaft hast Du die Gelegenheit, einen nachhaltigen Unterschied zu machen.
CGM Leverages AI: Wir suchen Menschen, die die Kraft von KI im E-Health-Umfeld sp&uuml;ren, den Wandel mitgestalten wollen und mit neugieriger Leidenschaft erkennen, wie Technologie Gesundheit smarter, einfacher und besser machen kann.
Gemeinsam gestalten wir das Gesundheitssystem der Zukunft. Werde Teil unserer Mission und mache den Unterschied &ndash; f&uuml;r eine Welt, in der Wissen Leben rettet!
Dein Beitrag:
<ul><li>Du &uuml;bernimmst die technische F&uuml;hrung f&uuml;r eine moderne Webplattform auf Basis von Angular/React, Java (z.B. Quarkus, Spring Boot) und Python mit Anbindung an relationale Datenbanken, Event-Streaming (z.B. Kafka) und etablierte Branchenstandards, und verantwortest gemeinsam mit dem Product Management die technische Roadmap.</li><li>
Du f&uuml;hrst ein cross-funktionales Engineering-Team, hebst die technische Messlatte kontinuierlich an und stellst sicher, dass Architektur, Codequalit&auml;t und Delivery-Praktiken zu unseren &uuml;bergreifenden Standards passen.</li><li>
Du treibst die AI-native Weiterentwicklung der Plattform voran, designst Agents, Skills und Workflows, die f&uuml;r Anwender:innen im Gesundheitswesen sp&uuml;rbaren Mehrwert im Alltag schaffen.</li><li>
Du arbeitest eng mit Architektur, Security und anderen Produktteams zusammen, sorgst f&uuml;r Konsistenz, Wiederverwendung und klare Schnittstellen in einem integrierten L&ouml;sungsportfolio.</li><li>
Du coachst und mentorst Engineers, st&auml;rkst Ownership, Proaktivit&auml;t und eine moderne Engineering-Kultur im Team und baust so ein leistungsstarkes, selbstorganisiertes Setup auf.</li></ul>
Das bringst Du mit:
<ul><li>Mehrj&auml;hrige Senior-Erfahrung im Engineering moderner Webanwendungen mit nachweislicher technischer F&uuml;hrung (z.B. Tech Lead, Principal Engineer) und End-to-End-Verantwortung f&uuml;r produktive Systeme.</li><li>
Abgeschlossenes Hochschulstudium (idealerweise Master) in Informatik, Software Engineering oder einem vergleichbaren technischen Studiengang mit sehr guten Leistungen.</li><li>
Sehr gute Kenntnisse in einem modernen Kernstack &ndash; React/Angular, Java Spring Boot (idealerweise Quarkus-Erfahrung), Python, Kafka, Terraform &ndash; sowie in Cloud- und DevOps-Praktiken (z.B. Kubernetes, Helm, ArgoCD) und verteilten, skalierbaren Systemen.</li><li>
Nachweislich effektiver Einsatz von AI im Software-Engineering, bevorzugt mit Claude Code oder &auml;hnlichen agentischen Coding-Tools (Agents, Skills, Workflows) sowie Erfahrung mit AI-Pipelines, Harnesses und Context Engineering, um AI-first-Funktionalit&auml;ten sicher in die Architektur zu integrieren.</li><li>
Flie&szlig;endes Deutsch und flie&szlig;endes Englisch in Wort und Schrift, ausgepr&auml;gte Probleml&ouml;sungsst&auml;rke, Innovationsfreude, hohe Proaktivit&auml;t, starkes unternehmerisches Mindset und klares Alignment mit unserem Healthcare-Purpose und dem Impact auf die Versorgung.</li></ul>
Das kannst Du von uns erwarten:
<ul><li>Mobile Work: Arbeite flexibel an zwei Tagen pro Woche mobil und an 3 Tagen vor Ort.</li><li>
Attraktive Standorte: An unseren Standorten erwarten Dich neben voll ausgestatteten Arbeitspl&auml;tzen auch regelm&auml;&szlig;ige Events wie Sommerfeste und Weihnachtsfeiern.</li><li>
Entwicklung: Unsere Inhouse-Academy und unser Portfolio aus externen Kooperationspartnern unterst&uuml;tzen Dich in Deiner Weiterentwicklung.</li><li>
Gesundheit: Gesundheit ist f&uuml;r uns ein hohes Gut. In der hauseigenen Kantine gibt es jeden Tag eine Auswahl an leckeren und gesunden Gerichten und in unserem voll ausgestatteten Fitnessstudio hei&szlig;en wir Dich in w&ouml;chentlichen Kursen gerne willkommen.</li><li>
Mehr geht immer: Der Kindergarten auf unserem CGM-Campus in Koblenz unterst&uuml;tzt unsere Mitarbeitenden dabei, ihren Arbeitsalltag noch flexibler zu gestalten. Wir halten au&szlig;erdem Corporate Benefits, die M&ouml;glichkeit eines Jobrads, BAV u. v. m. f&uuml;r Dich bereit.</li></ul>
Vielfalt ist Teil von CGM! Wir freuen uns unabh&auml;ngig von Behinderung, Geschlecht, Nationalit&auml;t, ethnischer und sozialer Herkunft, Religion, Alter sowie sexueller Orientierung und Identit&auml;t auf Deine Bewerbung.
&Uuml;berzeugt? Bewirb Dich jetzt online mit Deinen aussagekr&auml;ftigen Bewerbungsunterlagen (inkl. Deiner Zeugnisse, Gehaltsvorstellung und n&auml;chstm&ouml;glichem Eintrittstermin).</div>

Technical Leader Software Engineering (m/w/d)

<div>As the leading company in the field of software solutions for healthcare, we operate in 19 countries and employ over 9,000 dedicated staff members. You will work in a dynamic and innovative environment full of opportunities. With your commitment and passion, you have the chance to make a sustainable difference.
CGM Leverages AI: We&rsquo;re looking for people who feel the power of AI in the e-health environment, who want to help shape change, and who are driven by a curious passion to see how technology can make healthcare smarter, simpler, and better.
Together, we are shaping the healthcare system of the future. Become part of our mission and make a difference &ndash; for a world where knowledge saves lives!
Are you passionate about groundbreaking products? Do you have the talent to turn ideas into real, valuable solutions&mdash;while always keeping the bigger picture in mind? Then we&rsquo;d love to meet you!
Your Impact:<ul><li>
You design and develop high-end C++ components for our medical desktop applications, with a strong focus on performance, stability, and scalability.</li><li>
You architect, implement, and review complex multithreading and parallelization concepts to ensure efficient, safe, and responsive execution in everyday clinical use.</li><li>
You analyze, refactor, and optimize our large existing codebase (QT, CMake, Conan, MSVC, and embedded CEF), identify bottlenecks, and systematically raise the performance and quality of long-lived products.</li><li>
You work closely with Architecture, QA, and Product Management, drive the modernization away from legacy MFC / ATL / Win32 and Delphi towards modern C++ and current .NET, and actively raise the overall C++ engineering bar.</li><li>
You use AI agents and tools like Claude Code in your daily work to accelerate refactoring, code analysis, and legacy modernization, and you continuously improve our shared agents, skills, and workflows.</li></ul>
Your Profile:<ul><li>
Several years of senior-level experience in professional C++ development, ideally in high-performance, highly parallelized desktop systems with significant ownership and end-to-end responsibility.</li><li>
Excellent academic background with a completed university degree in computer science, mathematics, physics, electrical engineering, or a comparable technical discipline with very good grades.</li><li>
Deep expertise in modern C++ (C++ 14/17/20), multithreading and concurrency, debugging and performance tuning, plus hands-on experience with Qt, CMake, Conan, MSVC, and integrating components such as CEF; confident, effective use of AI in software engineering, ideally including Claude Code or similar agentic coding tools as well as AI pipelines and context engineering.</li><li>
Fluent German and fluent English, both in spoken communication and in writing, enabling you to work seamlessly in cross-functional, international teams and with German-speaking stakeholders.</li><li>
A structured, analytical way of working, high-quality standards, strong problem-solving skills, innovation drive, proactive ownership and a pronounced sense of entrepreneurship with genuine enthusiasm for shaping the future of healthcare IT.</li></ul>
What you can expect from us:<ul><li>
Mobile work: Work flexibly on the move two days a week and on site three days a week.</li><li>
Attractive locations: In addition to fully equipped workplaces, regular events such as summer parties and Christmas parties await you at our locations.</li><li>
Development: Our in-house academy and our portfolio of external cooperation partners will support you in your further development.</li><li>
Health: Health is a valuable asset for us. Our in-house canteen offers a selection of tasty and healthy dishes every day, and we welcome you to our fully equipped fitness center for weekly courses (online &amp; offline).</li><li>
More is always possible: The kindergarten on our CGM campus in Koblenz helps our employees to organize their working day even more flexibly. We also offer corporate benefits, the option of a job bike, a company pension scheme, and much more.</li></ul>
Diversity is part of CGM! We look forward to receiving your application regardless of disability, gender, nationality, ethnic and social background, religion, age, sexual orientation, and identity.
Convinced? Apply online now with your detailed application documents (including salary expectations and earliest possible starting date).</div>

Senior C++ Engineer – Multithreading (f/m/d)

Adsquare

<div>
 
 
 
 About the Company
 
 
 
 
 
 
 
 
 
 At Adsquare, our mission is driven by our core focus:
 
 
 
 
 
 
 
 <ul>
 <li>
 
 Passion
 
 &ndash; Solving complex challenges with great people, tech, and data.
 </li>
 <li>
 
 Niche
 
 &ndash; Location Intelligence for Programmatic Advertisers.
 </li>
 </ul>
 
 
 
 
 
 
 
 Our core values are integral to everything we do:
 
 
 
 
 
 
 
 <ul>
 <li>
 
 Drive
 
 : We turn ambition into action to deliver valuable outcomes.
 </li>
 <li>
 
 Resilience
 
 : We adapt, persevere, and grow stronger.
 </li>
 <li>
 
 No BS
 
 : We value honesty, transparency, and clear communication.
 </li>
 <li>
 
 Humble
 
 : We choose modesty over vanity and let results speak for themselves.
 </li>
 <li>
 
 Moral Compass
 
 : We do the right thing with fairness, integrity, and respect.
 </li>
 </ul>
 
 
 
 
 
 
 
 We seek candidates who not only bring top-tier technical expertise but also embody these values in every aspect of their work.
 
 
 
 
 
 
 
 
 
 About the Role
 
 
 
 
 
 
 
 
 
 As a (Senior) Data Engineer at Adsquare, you will be a key contributor to our core engineering function, creating and maintaining scalable big data pipelines that power our applications and drive business value. Because our engineering department handles a variety of critical data challenges, you will be assigned to a specific cross-functional squad based on your individual strengths, experience, and current business needs.
 
 
 
 
 
 
 
 
 
 Responsibilities
 
 
 
 
 
 
 
 
 <ul>
 <li>
 
 Data Pipeline Ownership
 
 : Take full accountability for the pipeline lifecycle&mdash;from raw data ingestion to transformation and external delivery&mdash;according to defined SLAs, time, and budget.
 </li>
 <li>
 
 Architect Scalable Solutions
 
 : Design and build robust data architectures required to process and transfer terabytes of data.
 </li>
 <li>
 
 Pipeline Optimization
 
 : Continuously improve data pipelines for cost and performance. This includes analyzing query plans, optimizing compute and working memory, and strategically applying horizontal or vertical scaling.
 </li>
 <li>
 
 Engineering Rigor
 
 : Elevate data engineering standards. Implement CI/CD workflows, infrastructure-as-code, test-driven development (TDD), and automated testing to ensure reliable and maintainable code.
 </li>
 <li>
 
 Data Monitoring
 
 : Create and maintain live monitoring dashboards to ensure data solutions are healthy and to support strategic decision-making.
 </li>
 <li>
 
 Collaboration &amp; Mentorship
 
 : Bridge the gap between Data and Backend engineering. For Senior applicants, act as a technical leader by mentoring junior team members, conducting code reviews, and introducing best practices.
 </li>
 </ul>
 
 
 
 
 
 
 
 
 Qualifications
 
 
 
 
 
 
 
 
 
 We are looking for a candidate with varying levels of experience (mid-level to senior, typically 3-6+ years) in Data Engineering or Backend Development with a heavy data focus. You must be comfortable working in a self-organized, agile environment.
 
 
 
 
 
 
 
 
 
 Required Skills
 
 
 
 
 
 
 
 
 <ul>
 <li>
 
 Programming Mastery
 
 : Very strong proficiency in Python and SQL. You write modular, production-ready code and possess a solid understanding of both Functional Programming and Object-Oriented Programming (OOP) principles.
 </li>
 <li>
 
 Big Data &amp; PySpark
 
 : Deep experience with large-scale data processing frameworks, specifically Apache Spark / PySpark. You understand how to handle TB-scale datasets efficiently. Deep understanding of big data file formats like parquet and avro. Experience with open Lakehouse formats like Iceberg.
 </li>
 <li>
 
 Advanced Optimization Skills
 
 : Proven experience in optimizing data pipelines for compute, working memory, and cost efficiency, including reading and analyzing complex query plans/profiles.
 </li>
 <li>
 
 Database &amp; Storage Architecture
 
 : Expertise in the trade-offs between OLAP and OLTP systems. You have built solutions using relational and non-relational (NoSQL) databases, and horizontally scalable data warehouses/lakehouses (e.g., Redshift, Snowflake, StarRocks).
 </li>
 <li>
 
 Cloud Native (AWS)
 
 : Experience architecting solutions within the AWS ecosystem (e.g., S3, Athena, Glue, EMR, Lambda, Batch).
 </li>
 <li>
 
 Infrastructure &amp; Orchestration
 
 : Production experience treating infrastructure as software using Terraform, alongside experience with orchestration tools like Airflow, dbt, or Step Functions.
 </li>
 <li>
 
 Engineering Fundamentals
 
 : Solid grasp of computer science principles, data structures, algorithms, and git-flow/CI/CD pipelines.
 </li>
 <li>
 
 AI tools
 
 : Good command of using AI tools (e.g. Claude Code, Kiro, Gemini Pro) to improve and refactor your code, increase your productivity and quality and performance of your code.
 </li>
 </ul>
 
 
 
 
 
 
 
 
 Preferred Skills
 
 
 
 
 
 
 
 
 <ul>
 <li>
 
 Compiled Languages
 
 : Experience with a compiled or strongly typed language (e.g., Java, Scala, Go, Kotlin, C++, Cython).
 </li>
 <li>
 
 Geospatial Data
 
 : Experience working with GIS (Geographic Information Systems) and geo-spatial datasets.
 </li>
 <li>
 
 Data Formats
 
 : Expertise in optimizing file formats (Parquet, Avro, Iceberg) for performance.
 </li>
 <li>
 
 Streaming Technologies
 
 : Familiarity with Kafka and Flink.
 </li>
 <li>
 
 Backend Context
 
 : Experience working closely with Backend engineers or familiarity with Backend architectural patterns (microservices, API design).
 </li>
 </ul>
 
 
 
 
 
 
 
 
 Pay range and compensation package
 
 
 
 
 
 
 55,000 - 65,000 euros per year
 
 
 
 
 
 On top of a competitive package, we offer:
 
 
 
 
 
 
 
 <ul>
 <li>
 Hybrid work model + remote work from anywhere worldwide up to 3 months/year
 </li>
 <li>
 Individual yearly learning budget of 1,200&euro;
 </li>
 <li>
 30 vacation days per year
 </li>
 <li>
 Urban Sports Club membership
 </li>
 <li>
 Company pension scheme
 </li>
 <li>
 Regular team and company events
 </li>
 <li>
 Latest hardware and all tools you need to thrive
 </li>
 </ul>
 
 
 
 
 
 
 
 
 Equal Opportunity Statement
 
 
 
 
 
 
 
 
 
 We are committed to diversity and inclusivity.
 
 
 
 
 
 
 
 
 Apply now!
 
 
 
 
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Data Engineer (m/f/d)

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