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# Backend Engineer (Mid-Level)

- **Company:** Clera
- **Location:** Berlin, Germany
- **Experience:** Experienced
- **Salary:** €80,000.0 - €120,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Data Security, PostgreSQL, Node.Js, Next.js, Service Design, Systems Integration, TypeScript, Backend, Stripe, Production Code, Asynchronous Programming
- **Published:** October 8, 2026
- **Apply:** https://startup.jobs/backend-engineer-mid-level-clera-10290735

## About the Role

* At least 3 years of experience building reliable backend infrastructure.
 * Proficiency with TypeScript and Node.js, including asynchronous programming.
 * Experience with PostgreSQL and ORM-based data access.
 * Experience building backend services with Next.js, including API routes or server components.
 * Familiarity with distributed-systems concepts and scalable, maintainable service design.
 * Experience integrating Stripe payments and billing flows.
 * Strong computer science fundamentals through a degree or equivalent practical experience, plus evidence of exceptional technical work.
 * Broad application-building experience and a hands-on record of recent production coding and shipping.
 * Fluent German at C1 level or higher, with strong written and verbal communication skills.

## Description

Join a core infrastructure team at an energy technology company building software for dynamic electricity plans. You will develop backend systems for billing, energy-market communications, and accounting, helping make these services reliable and scalable., * Design backend systems that address complex billing and energy-service requirements.

 * Build and scale core services that support dynamic electricity plans and reliable billing.
 * Develop and maintain backend data access and service logic.
 * Contribute hands-on to production code and ship improvements with ownership.
 * Help raise the quality and maintainability of core infrastructure.