Senior Fullstack TypeScript Developer (m/w/d)

You want to develop clean software, take responsibility and not land in classic consulting stress?

This role offers exactly that. For a specialized, financially very stable software boutique in Darmstadt, critical platforms for customers from energy, logistics, and aviation will be developed long-term. You work in a young, six-person team with strong cohesion, realistic expectations management, and long-term customer partnerships. So, space is created for clean architecture, sustainable solutions, and visible results of your work. How or where you work is up to you. What's important are only your results and especially the fun you have on projects.

Aufgaben

• Development and further development of complex applications with TypeScript as well as React or Angular
• The professional leadership of two colleagues, including on-the-job mentoring
• Designing sustainable software architectures, for example Domain Driven Design, hexagonal architecture, or modular monoliths
• End-to-End responsibility for features from conception to implementation to deployment and operation
• Surety of code quality through testing, refactoring, and code reviews
• Direct customer consulting and requirements engineering: You critically question requirements, clarify dependencies, and make risks transparent

Qualifikation

Harte Anforderungen:

• At least five years of relevant professional experience in software development, preferably already as a technical lead or mentor
• Excellent knowledge of TypeScript (Frontend & Backend)
• Fundamental experience in developing either with React or with Angular
• Safe handling of modern tooling (Git, CI/CD, Kubernetes) and testing frameworks (e.g. Jest, Playwright, Cypress).
• Fluent German skills for smooth communication within the team and with customers

Nice-to-have / Themen, in die du dich einarbeiten kannst:

• Experience with cloud architectures (AWS, Serverless, Lambda) or backend logic with Node.js
• Practical architecture knowledge in Domain-Driven Design (DDD), hexagonal architecture, or modularization of monoliths
• Experience in setting up or using design systems (e.g. Tailwind, shadcn/ui or Angular Material)
• Knowledge in modernizing legacy systems or UI migrations

Persönlich:

• You work structured, analytically, and communicate risks or blockers proactively and transparently
• You have fun with real