Backend Engineer at Clera | BE, DE | Rezi

Backend Engineer at Clera

Backend Engineer

Clera · BE, DE

2 days ago

Backend Engineer

Clera · BE, DE

2 days ago
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About the Role

Join the core infrastructure team at an energy technology company building systems for dynamic electricity plans and reliable billing. You will develop scalable backend services, including a modular billing engine, market communication systems, and an accounting ledger.

Responsibilities

  • Design backend solutions that simplify complex billing and energy-market systems.
  • Scale core infrastructure to support growing transaction volumes and market needs.
  • Ship features and improvements through rapid iteration and practical execution.
  • Improve technical quality through code reviews, architecture decisions, and mentorship.

Requirements

  • At least 3 years of hands-on backend engineering experience, with recent production coding and shipping.
  • Proficiency in TypeScript and Node.js, including asynchronous programming.
  • Experience with PostgreSQL and ORM-based data access, such as Drizzle or similar tools.
  • Experience building Next.js backend services, including API routes or server components.
  • Familiarity with distributed systems and designing scalable, maintainable core services.
  • Experience integrating Stripe payments and billing workflows.
  • Strong computer science fundamentals from formal education or equivalent practical experience, and evidence of exceptional technical work through projects, research, competition results, or founding experience.
  • Fluency in German at C1 level or higher, strong communication skills, and an ownership mindset.

Skills

  • TypeScript
  • Node.js
  • Asynchronous programming
  • PostgreSQL
  • ORM
  • Drizzle
  • Next.js
  • API routes
  • Server components
  • Distributed systems
  • Scalable services
  • Maintainable services
  • Stripe payments
  • Billing workflows

Location

  • Berlin, Germany

Work Type

  • On-site
  • Full-time

Experience Level

  • 3+ years of backend engineering experience

Education Level

  • Formal education in computer science or equivalent practical experience

Salary/Compensations

  • €80,000 to €120,000 annually

Benefits

  • Visa sponsorship

About the Company

  • Energy technology company building systems for dynamic electricity plans and reliable billing.