> Markdown version of [/jobs/ext/3212047-senior-backend-product-engineer-elixir](https://www.wearedevelopers.com/jobs/ext/3212047-senior-backend-product-engineer-elixir). 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).

---

# Senior Backend Product Engineer (Elixir)

- **Company:** Tellent
- **Location:** Köln, Germany (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), PHP (Programming Language), Artificial Intelligence, Code Review, DevOps, Python (Programming Language), Pair Programming, Ruby on Rails, TypeScript, Large Language Models, Backend, Front End Software Development, Elixir
- **Published:** September 25, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=b67b039597004f12

## About the Role

* Commercial experience with Elixir, or strong backend development experience in technologies such as Ruby on Rails, Python, Java, or PHP combined with a strong motivation to learn Elixir
 * Experience with Typescript and Mastra (AI TypeScript framework) or strong willingness to learn it
 * Senior-level judgment: you have shipped enough to know when good enough is good enough
 * Product thinking: you push back on specs, evaluate trade-offs, prototype cheaply, kill your own ideas when data says so
 * Interest in building with AI: hands-on LLM/feature experience is a plus, curiosity and shipped experiments count too
 * Communication: fluent English, Polish is a plus

## Description

Our Intelligence team builds the AI capabilities that run across the whole Tellent suite. We're looking for a backend-heavy product engineer who can take a fuzzy "AI should help here" idea and turn it into an interface people actually trust and use. You'll own problems end to end: shaping, building, shipping, and checking whether it moved anything.

Your 12-Month Journey

 * First 3 months: You'll get to know the team, our product, and our architecture while contributing to your first meaningful improvements. You'll become familiar with our engineering practices and ways of working, supported by experienced teammates as you get up to speed with our Elixir and AI stack.
 * Within 6 months: You'll take ownership of features and contribute to technical discussions, code reviews, and improvements to the scalability, reliability, and maintainability of the platform. You'll work closely with your teammates to solve customer problems and deliver valuable product improvements.
 * After 1 year: You'll be a trusted technical partner within the team, taking ownership of significant parts of the product and contributing to technical decisions and architectural discussions. You'll also help share knowledge across the team through collaboration, pair programming, and mentoring.

What You'll Be Doing

 * Building AI-powered features into mature products with real users, not a greenfield demo.
 * Working across the stack when the problem demands it (80/20 rule: mostly backend, comfortable following a problem into the frontend).
 * Take ownership of the features you deliver, ensuring they are well-tested, maintainable, and meet our quality standards.
 * Collaborate closely with Backend and Frontend Engineers, Design, QA, and DevOps to solve complex problems and deliver valuable product improvements.


## Related Videos

- [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock)
- [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling)
- [Bringing digital education to refugee and host communities in remote regions of Africa](https://www.wearedevelopers.com/videos/644-bringing-digital-education-to-refugee-and-host-communities-in-remote-regions-of-africa)
- [Shifting Stress to Progress— Understanding DevOps to do DevOps Better](https://www.wearedevelopers.com/videos/268-shifting-stress-to-progress-understanding-devops-to-do-devops-better)
- [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape)
- [Mobile vs. Backend DevOps](https://www.wearedevelopers.com/videos/1662-mobile-vs-backend-devops)

## Related Articles

- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)
- [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers)
- [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023)
- [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies)
- [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs)