Senior / Mid Full Stack Developer

Enzo
Heidelberg, Germany
21 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Intermediate

Job location

Heidelberg, Germany |
Heidelberg, Germany

Tech stack

API
Artificial Intelligence
Application Performance Management
Cloud Computing
Software Quality
Continuous Integration
Cursor (Graphical User Interface Elements)
DevOps
Software Engineering
Data Streaming
TypeScript
Web Applications
React
Reliability of Systems
Backend
React Native
Front End Software Development
Microservices

Job description

As Full Stack Developer, you'll build and evolve our web and app experiences using a TypeScript-first stack. You'll work closely with backend, AI, and product teams to ship features fast, without sacrificing code quality., You'll contribute across the stack, with a strong focus on TypeScript, modern frontend architecture, and clean system interfaces. While we also use React Native for our app, the primary focus is TypeScript-based development, not mobile specialization.

This is a hands-on builder role in a fast-moving startup environment.

Tasks

Frontend & Application Development

  • Build and maintain web applications using TypeScript + React + Cursor.
  • Contribute to our React Native app where needed.
  • Implement clean, maintainable UI logic and state management.

Backend & Integration

  • Work with APIs and backend services to integrate data and features.
  • Ensure reliable data flows between frontend, backend, and AI systems.
  • Improve application performance and robustness.

Code Quality & Speed

  • Write clear, well-structured, and testable TypeScript code.
  • Help keep the codebase clean as features evolve.
  • Move fast without breaking things unnecessarily.

Cross-Functional Collaboration

  • Work closely with Product, AI, and Engineering teams.
  • Translate product requirements into pragmatic technical solutions.
  • Actively contribute to technical discussions and decisions

Bonus: Infrastructure Awareness

  • Support cloud-related tasks when needed (CI/CD, deployments, monitoring).
  • Help improve system reliability and developer experience.

Requirements

Strong TypeScript Engineer

  • Solid experience with TypeScript across frontend (and ideally backend).
  • Strong React fundamentals.
  • Clean coding practices and good architectural intuition.

Pragmatic Full Stack Mindset

  • Comfortable working across layers of the stack.
  • You understand tradeoffs and optimize for outcomes.

Startup Attitude

  • Hands-on, ownership-driven, and execution-focused.
  • You enjoy building real products with real users.
  • You move fast and adapt quickly.

Bonus Skills

  • Experience with cloud infrastructure or DevOps.
  • Experience with IoT or data-heavy applications.

Languages

  • Fluent in English

Benefits & conditions

  • Build software that directly prevents real-world damage.
  • High ownership and visible impact.
  • Work in a small team where your work matters.
  • Fast learning, real responsibility, no corporate overhead.
  • A culture that values builders, clarity, and execution

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