# Senior Fullstack Engineer – Developer Platform (f/m/d) at Jtl Software Gmbh

> Location unclear · Senior · Full-stack · open. Source: https://alderhq.app/jobs/personio%3Ajtl-software-gmbh%3A2712705 (read 2026-11-14).

## Facts (observed)

- Company: [Jtl Software Gmbh](https://alderhq.app/companies/jtl-software-gmbh)
- Location text: Mobil
- Where it can be done from (inferred): Location unclear (evidence: "Location: Mobil")
- Posted: 2026-07-14 (123 days ago)
- First seen by alder: 2026-11-04 · last verified: 2026-11-13
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://jtl-software-gmbh.jobs.personio.de/job/2712705
- Skills listed (inferred): TypeScript, React, CSS, C#/.NET, GraphQL, Azure, Kubernetes, Docker, Terraform, Testing

## Pay and sponsorship

- Posted pay: not posted

## Description (the employer's text)

### Your mission

### About the team

We’re the Developer Platform team within the AI & Cloud Platform department, and we build the foundations the other engineering teams at JTL rely on. Our work spans three areas:

- Developer Enablement: engineering standards, shared tooling, CI/CD, and internal developer documentation that make product teams more productive.
- Cloud Platform Enablement: self-service building blocks for our first-party apps, from deployments and infrastructure to identity and API management.
- External Developer Relations: public developer documentation, SDKs and CLIs, our public APIs and API gateway, and developer community and events.
### Your responsibilities

- You work on the platform topics that matter most right now. Our focus shifts each quarter depending on where the company needs it most — sometimes frontend, sometimes backend, sometimes infrastructure
- You develop standards, guidelines, and best practices for frontend and backend at JTL
- You create and maintain templates, boilerplates, and libraries that help other teams work more productively and efficiently
- You support the bootstrapping of new projects, so our standards and toolchains are applied from the start
- You regularly evaluate new technologies and assess their value for our landscape
### Your profile

- You have several years of professional experience in fullstack development
- You are strong in one stack and solid in the other: React and TypeScript on the frontend, .NET 8 / C# on the backend
- Frontend: component-based development and design systems (Storybook, TailwindCSS), state management and data fetching (e.g. TanStack Query), modern build tools (Vite, turborepo, pnpm), and testing (Vitest, Jest, Playwright)
- Backend: CQRS and Domain-Driven Design (DDD), API development with FastEndpoints, and familiarity with GraphQL — ideally having designed a GraphQL API
- You are confident with Docker and common containerisation workflows, and with Git and collaborative workflows (pull requests, code reviews)
- You communicate clearly in writing and speech — a big part of the role is driving standards and best practices across teams
- You have a solid understanding of and genuine interest in AI development, since most of the platform features we ship are designed AI-first
- "You have business-fluent English (written and spoken) and good German skills (at least B2 level)
- Terraform and hyperscalers, preferably Azure
- Micro-frontends
- CI/CD pipelines (GitHub Actions)
- Basic Kubernetes and Helm
- Infrastructure as Code (IaC), GitOps, and experience with Argo
### Why us?

- Remote-first within Germany, with the option to work remotely from eligible countries for up to 180 days per year
- Meal allowance of up to €115 net per month
- Ergonomic workspace allowance for your home office setup
- Regular team events, company-wide gatherings, and summer and Christmas parties to stay connected as a remote-first company
- EGYM Wellpass and JobRad subsidy
- Financial benefits including capital-forming payments (Vermögenswirksame Leistungen) and a company pension scheme

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/personio%3Ajtl-software-gmbh%3A2712705 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.