java backend engineer senior Jobs in Berlin

At Routine Labs, we are building Europe's first secure, auditable, and EU-compliant automation infrastructure for legacy systems. We're taking a practical approach to improving how engineers work with AI systems. Combining LLMs with familiar software engineering methods to make it easier for people to build, modify and maintain software automations. Our...

Deine AufgabenYou will develop our AWS back-end architecture,You will implement efficient Lambdas using various frameworks,You will introduce modern testing strategies (unit, integration, E2E tests),You will optimize performance and scalability (PostgreSQL, DynamoDB caching),You will ensure and further develop professional development and documentation...

bunch is building the backbone of private markets. We are enabling next-gen fund operations with one integrated system that combines secure data infrastructure, AI-powered workflows and expert fund services. If you value ownership, growth through real responsibility, and working with a thoughtful, ambitious team, this role might be for you.Your Role You will...

Your responsibilitiesWork side-by-side with our CTO and our engineering team to develop systems that power our platform in hospitals and allow us to continuously ship great features.Lead backend work, helping us to scale reliably across cloud and hybrid deploymentsTake ownership of key components in our product roadmap and collaborate with our product and...

Deine MissionAls (Senior) Backend Engineer bist du ein zentraler technischer Contributor in unseren Backend-Teams. Du übernimmst Verantwortung für komplexe Komponenten, treibst technische Exzellenz voran und arbeitest eng mit Produkt-, Frontend- und Infrastruktur-Teams zusammen, um zuverlässige und skalierbare Lösungen zu liefern.Design, Entwicklung und...

At GALVANY, our goal is to make climate-neutral living a reality for everyone. We focus on execution – developing concrete, smart solutions and making heat pumps, battery storage, and smart metering easy to access, reliable, and affordable. GALVANY-Tech drives the energy transition through software. We're building an AI-based Operating System for sales,...

About the RoleYou will join the core infrastructure team to build scalable backend services for an energy tech platform that enables dynamic energy offerings for OEMs and energy providers.What You'll DoDesign and implement robust backend components using TypeScript and Node.jsWork with PostgreSQL and an ORM to model and access data efficientlyContribute to...

StellenbeschreibungMitgestaltung, wie Millionen von Nutzer:innen Produkte sehen, durch die Kombination von ML-Modellergebnissen mit Business-Logik wie Kampagnen-Boosts oder Sponsored ProductsEntwicklung und Verantwortung für unsere performante Ranking Engine „Spotsetter“, um eine schnelle, deterministische und faire Sortierung von Produkten...

About Spiele-Palast GmbHSpiele-Palast GmbH develops and operates successful online card games for browsers and mobile devices. Hundreds of thousands of active players use our platform every day to connect with others and enjoy card games together. Our goal is to build the leading platform for online card games worldwide.To achieve this, we continuously...

Who we areXempus is the leading European group pension, life and health insurance platform. We seamlessly connect insurers, insurance agents, corporates and their systems in an automated and customer-centric manner. Using standardized interfaces and structured data, we operate the central infrastructure for all customer-centric processes and enable agentic...

IntroAt Adsquare, our mission is driven by our core focus: Passion, solving complex challenges with great people, tech, and data; and Niche, location intelligence for programmatic advertisers. Our core values are integral to everything we do:Drive: We turn ambition into action.Resilience: We adapt, persevere, and grow stronger.No BS: We value honesty,...

About the RoleBanks and fintechs use Taktile to automate critical decisions, like credit and risk, in real time. We're building the infrastructure that makes financial institutions truly AI-native, and the backend is where the hard problems live.We're growing rapidly with enterprise customers across banking and insurance, and we're looking for a Senior...

Solaris is Europe's leading embedded finance platform. Solaris’ full German banking license and proprietary modular B2B tech stack empowers its partners – from SMEs to large, multinational, non-financial companies – to offer compliant, customer-centric banking services, providing seamless experiences to customers across all industries. Founded in 2016,...

You don't want another role where someone else owns the architecture and you own the tickets. Here you pick the technology, design the architecture, and set the standards the backend runs on. 40,000 buyers, 20+ countries, 130,000 vehicles sold a year through one auction backend, and you decide how it scales. Location: Central Berlin — hybrid, 3 days in...

Join our VERBI Team as a Senior Backend Engineer (m/f/x)! We are VERBI Software GmbH – the company behind MAXQDA – the #1 software for qualitative and mixed methods data analysis. We provide researchers, universities, and companies with an innovative and intuitive tool so they can accomplish great things. Professional service and a close connection to...

About the Job As a key growth accelerator, A11 partners with Europe’s most ambitious startups and scaleups, corporates, and SMBs to connect them with top-tier talent ready to make an impact. We’re looking for an experienced Senior Backend Engineer (m/f/d) to be a technical anchor across the team at our Ecosystem Company.  You will operate with a high...

THE ROLE AND THE TEAMThe ZEOS B2B Platform is the high-performance engine that allows our partners to seamlessly integrate into the Zalando ecosystem. As a Senior Backend Engineer, you will be a key architect of the services that power our partner-facing products and internal operational tools. Our mission is to transform complex business requirements into a...

Job DescriptionDevelop the search engine behind ABOUT YOU, covering query understanding, entity resolution, and semantic vector search in Node.js/TypeScriptBlend OpenSearch relevance, embedding similarity, and behavioral re-ranking signals into unified search resultsBuild search-index pipelines (entities, synonyms, k-NN product vectors) streaming data from...

Our MissionJoin us in reshaping global trade in a fast-growing startup!We are traide AI – a VC-backed, B2B deep tech startup based in Berlin, using AI to solve one of the most overlooked yet critical challenges in international trade: customs compliance. Our software automates product classification, reduces regulatory errors, and helps customers save up...

About Wolt 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...