# Backend Engineer - AI Developer Platform at N26

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Build and maintain the internal AI platf

- **Company:** N26 (https://jobs.trythestack.co/companies/n26)
- **Location:** Berlin, Germany
- **Employment type:** Full-time
- **Experience level:** 2–5 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Backend Engineering, Platform Building, Internal Products, Kotlin, Go, Python, TypeScript, APIs, Distributed Systems, Developer Platforms, Tooling, AI Integration, Collaboration, Observability, Security Policies, LLM Integrations
- **Posted by employer:** 2026-03-24
- **Added to The Stack:** 2026-03-30
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://n26.com/en-eu/careers/positions/7739236?gh_jid=7739236 (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/backend-engineer-ai-developer-platform-n26

## About the role

Responsibilities:
- Build and maintain the internal AI platform used by engineering teams (AI Gateway, Skills Marketplace, developer tools).
- Implement AI Gateway features: provider routing, cost controls, security policies, observability, and safe consumption patterns.
- Contribute to Skills Marketplace: publishing, discovery, versioning, governance, and composability of AI capabilities.
- Develop AI-assisted developer tooling and integrate AI capabilities into internal dev platforms.
- Collaborate with DevEx and platform teams to design, test, and deliver production-ready, scalable, and secure infrastructure.

Requirements:
- Proven backend engineering experience building platforms or internal developer-facing systems.
- Proficiency in one or more of Kotlin, Go, Python or TypeScript and experience with APIs and distributed systems.
- Experience or strong interest in observability, security controls, cost management, and production-grade services.
- Collaborative, product-focused mindset with curiosity about LLM integrations and how AI improves developer workflows.
- Comfortable working in cross-functional teams; experience with cloud-native architectures and developer tooling is a plus.

## Responsibilities

The engineer will build the internal AI platform used by engineering teams, focusing on developing the AI Gateway for connecting to LLM providers, implementing routing, cost controls, and security policies. Responsibilities also include contributing to the Skills Marketplace for publishing reusable AI capabilities and building developer tools for AI-assisted workflows.

## Requirements

Candidates must be backend engineers who enjoy building platforms and developer-facing systems, possessing solid experience with languages like Kotlin, Go, Python, or TypeScript, and familiarity with APIs and distributed systems. A strong interest in developer platforms, AI, and excellent collaboration skills are essential for success in this role.

## FAQ

- **Is this Backend Engineer - AI Developer Platform role still open?** It was posted on 2026-03-24. Listings more than 30 days old may no longer be active, so check N26's site before applying.
- **Does N26 offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on N26's site.
- **Where is this role located?** The listing gives the location as Berlin, Germany.
- **What skills does this role ask for?** The listing names: Backend Engineering, Platform Building, Internal Products, Kotlin, Go, Python, TypeScript, APIs, Distributed Systems, Developer Platforms, Tooling, AI Integration, Collaboration, Observability, Security Policies, LLM Integrations.

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## Notes for agents

- Apply on the employer's page (https://n26.com/en-eu/careers/positions/7739236?gh_jid=7739236). The Stack does not take applications.
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