Senior Backend Engineer (mwd)

FIXING THE PLANET BY MAKING HOMES CARBON-FREE!

With 40 million in funding from top-tier investors such as COATUE Foundamental & Target Global we are working towards a future where climate-neutral buildings - simply & rapidly - become a reality. Through tailored solutions for millions of homeowners we implement comprehensive energy-efficiency renovation projects thereby establishing the infrastructure for climate-neutral living.

As a Senior Backend Engineer youll design and build the systems that power our platform from customer-facing experiences to the data pipelines that drive automation insights and decision-making.
Youll work closely with product design frontend and data teams to deliver reliable scalable systems with real-world impact.

Deine Aufgaben

• Design build and maintain scalable production-ready backend services
• Work across our platform from customer-facing flows to internal systems and data pipelines
• Write and extend services primarily in Golang TypeScript and Python
• Drive architectural decisions especially around our data core and automation pipelines
• Build and improve systems that transform customer data into actionable insights
• Ensure high code quality through testing code reviews and clean architecture
• Improve system reliability via CI/CD monitoring and alerting
• Collaborate closely with product and stakeholders to translate business needs into robust technical solutions
• Identify opportunities for product and operational improvements based on data and system insights

Dein Profil

• 5 years of experience building backend systems in production environments
• Strong proficiency in Golang and solid experience with TypeScript and/or Python
• Experience designing and operating distributed systems and microservices architectures
• Strong understanding of event-driven systems (e.g. Kafka NATS JetStream)
• Experience with cloud infrastructure (AWS or GCP)
• Hands-on experience with Docker and Kubernetes
• Familiarity with CI/CD tools (e.g. GitHub Actions CircleCI Terraform)
• Experience with databases such as PostgreSQL DynamoDB MongoDB or Cassandra
• Strong understanding of API design (REST GraphQL)
• Comfortable contributing to frontend or user-facing components when needed to deliver end-to-end solutions
• Experience with monitoring and observability (e.g. Prometheus Grafana ELK)
• Solid understanding of performance optimization caching and database efficiency
• Experience with authentication/authorization (e.g. OAuth FirebaseAuth)
• You write well-tested code and are comfortable with unit and end-to-end testing
• Full working proficiency in English (German is a plus)

Benefits

• Become part of one of Europes fastest growing Climate Tech Startups - funded by Europes best known VCs
• Attractive & competitive compensation
• Work with top talent in a dynamic environment Individual benefits: learning budget Urban Sports Clubs membership job ticket or daycare allowance
• Office with a direct view of the Spree River with everything your heart desires
• Numerous team events including yoga