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# Principal Node.js Engineer

- **Company:** Twin Harbour Interactive
- **Location:** Hamburg, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, PHP (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Cloud Computing, Relational Databases, Software Design Patterns, Payment Systems, Video Game Development, PostgreSQL, Memcached, MySQL, Node.Js, Redis, E2e Testing, Service-Oriented Architecture, SONAR (Symantec), TypeScript, Datadog, PHP Frameworks, Claude Code, Backend, Kubernetes, Sentry, Google Gemini, NestJS, Docker
- **Published:** October 9, 2026
- **Apply:** https://www.careerjet.de/jobad/dec8f0ff43217cb53dded67d4fa916a739

## About the Role

At least 7 years of professional experience in TypeScript/Node.js development.
Proven experience in software service architecture methodologies (i.e. DDD) and in PHP 7/8 and PHP frameworks in the context of understanding legacy codebases.
Experienced with unit/integration/end-to-end testing and modern Node.js frameworks.
Good understanding of relational databases and containers.
You have worked on multi-server, high-load Node.js applications and APIs; and have gained experience working with cloud technologies (i.e. GCP).
Excellent analytical and problem-solving skills, and able to write easy to understand, well-structured and maintainable code using design patterns appropriately.
You can quickly get familiar with complex code bases.
Interest in and already some experience augmenting your work with AI tools (i.e. Claude Code, Codex or Gemini).
You have the ability to understand business needs and translate them into technical requirements.
You are an experienced coach and mentor. You are able to facilitate technical discussions within and outside the team.
Practiced agile methodologies, specifically Kanban.
You are enthusiastic about games and enjoy working in an interdisciplinary team. Having past game development experience is a plus.
Fluent in technical and business English.

## Description

As a Principal Node.js Engineer, you will have a pivotal role in the extension and improvement of our backend services. You bring the expertise needed to ensure the development of stable, performant, scalable, secure, and maintainable code. You will work towards improving our development workflows and best practices. You will help with the coordination with product teams and technical leads, and will work side by side with the product manager to decide priorities and the long term technical strategy of the team.
YOUR TASKS
Lead the transformation of our core PHP monolithic backend into a secure, performant and well architected set of decoupled services.
Drive architectural decisions for new services.
Promote and implement security, testing and development best practices.
Contribute high-quality and maintainable TypeScript code using NestJS framework.
Work with a variety of tools and technologies including Sentry, Datadog, Sonar, Docker, Kubernetes, Mysql, Postgres, Redis, Memcache and Pub/Sub.
Take ownership of important tech KPIs to ensure a smooth development process.
Work closely with the Head of Platform shaping the technical vision and project roadmap.
Collaborate with our quality engineers to fully integrate them into our development process.
Lead integration of new APIs, payment systems, and data tracking.
Mentor and guide developers on your team.
Drive technical discussions and be responsible for technical decisions when team-wide consensus is not reached.