(Senior) Backend Engineer – Golang

Team: Product & Engineering

Start date: As soon as possible

Location: Berlin hybrid 3 days in the office

Working language: English (German: a plus)

Salary band: Shared before your first interview

As (Senior) Backend Engineer at Gymondo you build and improve the scalable backend systems that power our platform for hundreds of thousands of active users. You work with a modern tech stack establish new services using clean architecture principles and help translate legacy concepts into maintainable future-proof code. Your work directly shapes the technical foundation that enables Gymondo to grow reliably efficiently and at scale.

• You build improve and maintain scalable backend services using Golang and Gin-Gonic following clean architecture and established design patterns

• You design and implement REST APIs following OpenAPI standards with a focus on clarity reliability and long-term maintainability

• You contribute to our microservice architecture working on reliability scaling stateless applications and event-driven systems

• You rebuild legacy concepts and translate them into well-known programming patterns with transparent and maintainable business logic

• You develop data-driven features and are involved in all stages of the development process from design to deployment

• You work on our scalable automated infrastructure using AWS Kubernetes and Terraform

• You participate in peer code reviews write unit tests and champion agile development practices

• You share knowledge discuss better solutions openly and grow together with the team

• 4 years of professional experience in backend-focused development including infrastructure

• 3 years contributing to microservice architectures with a focus on reliability scaling stateless applications event-driven systems and clean architecture

• 3 years designing REST APIs following OpenAPI standards

• Proven hands-on experience with Golang and Gin-Gonic

• Ability to design proof of concepts and prototypes

• Standardised coding practices: peer code reviews unit testing and a preference for agile development

• An open mindset and genuine interest in state-of-the-art technologies and methodologies

• Fluent English

• Experience with JVM languages (Kotlin / Java) and frameworks such as Ktor Spring or

• A Product Engineer mindset: balancing technical excellence with business impact proactively identifying trade-offs that prioritise user value and speed-to-market without compromising long-term system health

• Strong communication skills across the Product & Engineering team and additional stakeholders

• A collaborative humble approach you promote good relationships in your guild and are always willing to learn from others

Golang Kotlin Java 17 Gin-Gonic Ktor NestJS Spring Boot Elasticsearch MySQL PostgreSQL DynamoDB MongoDB Redis Terraform Docker Kubernetes Event-Driven Architecture AWS

Success requires positive energy. Thats why we ensure the right conditions are in place physically mentally and within the team:

• 30 days of vacation per year Christmas Eve & New Years Eve as additional paid days off

• Hybrid working model 60% in the office 40% from home applicable to all working hours

• Up to 4 weeks of work from abroad per year (Berlin-based roles)

• Free Urban Sports Club M membership & access to Nilo Health for mental health and personal development

• Free access to 7Mind Gymondo & Buddyfit our own digital wellbeing products

• 30 monthly mobility budget via Navit

• 1000 annual training budget a wide range of opportunities for personal growth and development

• Family-friendly benefits childcare costs & paid sick days for children

• The office classics fruit & vegetable basket muesli & yogurt (also vegan) drinks & snacks

• Pet-friendly office four-legged colleagues are very welcome!

These benefits apply to full-time and part-time permanent employees. Working students and interns receive a pro-rated selection.

Gymondo is one of the leading digital fitness and nutrition platforms in the DACH region with over 2000 workouts holistic training programmes and smart nutrition plans. As part of 7NXT Health Group we help millions of people make movement a lasting part of their everyday lives.

Our team pushes each other thinks critically and grows together. We take responsibility for our users our products and our planet.

We welcome what makes you unique.

At Gymondo we believe in diversity openness and team spirit. No matter which gender you identify with whether you have a disability what your neurotype is where you come from what you believe in or how you love you are welcome here.

Dont meet all the criteria No problem if youd like to help shape the future of fitness & wellbeing with us we look forward to your application.

Need a more accessible process or have questions Write to us well find a way.