(Senior) Backend Engineer – Golang at 7NXT GmbH7NXT GmbH · Berlin

Workplace: Hybrid

Posted: 2026-10-19

Skills: Node.js, Java, Go, Kotlin, SQL, MongoDB, AWS, DockerThe essentials --------------Team: Product & EngineeringStart date: As soon as possibleLocation: Berlin — hybrid, 3 days in the officeWorking language: English (German: a plus)Salary band: Shared before your first interviewYour impact -----------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.What you’ll drive -----------------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 teamWhat defines you ----------------Must-have4+ 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 desi …truncated… 30 days of vacation per year…Sign in to see the original postingBrowse more developer jobs on RoleBurst