> Markdown version of [/jobs/ext/83713-staff-software-engineer-product-integration](https://www.wearedevelopers.com/jobs/ext/83713-staff-software-engineer-product-integration). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Software Engineer - Product Integration - **Company:** EV Digital GmbH - **Location:** Berlin, Germany - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Query Performance, Java (Programming Language), Artificial Intelligence, Microsoft Azure, Code Review, Databases, Command-Query Responsibility Segregation (Software Development), Cursor (Graphical User Interface Elements), Software Design Documents, Distributed Systems, Java Virtual Machine (JVM), PostgreSQL, Routing, Node.Js, Cloud Services, Software Engineering, Kotlin, Event Driven Architecture, Containerization, Kubernetes, Apache Flink, Apache Kafka, Event Sourcing, Api Gateway, Stream Processing, Docker - **Published:** May 28, 2026 - **Apply:** https://de.indeed.com/viewjob?jk=de8860a57e4f1388 ## About the Role Do you have experience in PostgreSQL?, * 8+ years of professional software engineering experience, with clear evidence of operating at a Staff level (cross-team technical impact, ownership of significant platform-level work, mentorship of senior engineers) * Strong polyglot foundation. Primary stack is JVM (Java and Kotlin); experience with Go or Node.js is welcome * Deep, production-grade experience with event-driven systems. Concrete experience with Kafka is required; Flink (or comparable stream processing) is a strong plus * Solid command of distributed systems fundamentals: idempotency, exactly-once vs at-least-once tradeoffs, backpressure, schema evolution, partitioning * Experience designing and operating CQRS and event-sourcing patterns, and the judgment to know when not to use them * Hands-on experience with API gateway technologies and patterns (routing, rate limiting, auth, traffic shaping) * Strong database judgment across relational (PostgreSQL) and non-relational stores, including data modelling, query performance, and migrations under load * Proven track record of leading complex, multi-team technical projects end-to-end * Effective use of AI coding tools as part of your daily workflow. We use Claude Code. Experience with similar tools (OpenAI Codex, opencode, Cursor and others) is fully transferable, but we want to see real fluency, not surface-level use * Familiarity with cloud service providers, ideally Azure * Confident with container technologies (Docker, Kubernetes) * Fluency in English; German is a plus ## Description You will lead the design and implementation of significant platform changes in Product Integration. You will set the technical bar for the team, raise the bar on how AI-assisted engineering is done at DCS, and act as a force multiplier for everyone around you. We organize expectations into Primary and Supporting areas. Primary areas define whether you are operating at the Staff level. * You author or sponsor design documents that achieve stakeholder alignment without escalation. You run design reviews that surface real tradeoffs, not rubber stamps. Your input on the technical roadmap is visible, justified, and acted on. * You raise team engineering standards through direct contribution and peer influence. You earn technical authority through reasoning quality and output. * You use AI tools as a serious engineering accelerator and you build the same capability in others. * You apply distributed systems patterns (event-driven, CQRS, API gateway, event sourcing) with demonstrated judgment about fit. * Written and verbal communication. You produce written artifacts (design docs, proposals, postmortems) that are clear, structured, and lead to alignment without repeated clarification rounds. * Technical pattern judgment. You know when not to use a pattern. The Staff level requires the confidence to advocate for simplicity against organisational momentum toward complexity. * Database and data model judgment. You apply sound judgment to data modelling, query performance, and schema migrations under load. You identify performance and migration risks before they reach production. * Code and review quality. Your code contributions are production-ready: correct, observable, operable, maintainable. Your code reviews are substantive. You identify real risks and design issues, not style preferences. ## Related Videos - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) ## Related Articles - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [How to Find Tech Jobs in Berlin](https://www.wearedevelopers.com/magazine/291-how-to-find-tech-jobs-in-berlin) - [Finding Jobs in Germany](https://www.wearedevelopers.com/magazine/375-finding-jobs-in-germany)