Senior Software Engineer

About the role

As a Senior Software Engineer at 1KOMMA5°, you will take technical ownership of key systems and features, driving architectural decisions and ensuring scalability, reliability, and performance. You'll help transform the business of servicing renewable technologies at scale with our service and CRM platform.

What you'll do

• Contribute as a senior software engineer within a team of self-driven software developers
• Design, build, and maintain business-critical systems across the stack. From scalable backend services to performant, user-friendly frontends
• Design and implement the central architecture for the new Customer Support Platform. Orchestrating and visualising service processes within our virtual assembly line
• Take ownership of this project from day one, making key decisions on API design, database structure, authentication and system scalability
• Design and implement AI first workflows for customer related service cases
• Translate complex and loosely defined business problems into clear, actionable technical solutions
• Champion clean architecture, component reusability, and maintainable UI patterns using modern frameworks
• Drive experiment-driven innovation and uphold strong engineering practices in testing, CI/CD, observability, and code quality

What you'll need

• Extensive experience writing maintainable, reusable, and testable code in TypeScript, with strong skills in both frontend frameworks (e.g. React, Next.js) and backend technologies (e.g. Node.js, NestJS, or similar)
• Strong understanding of API design, data modelling, and system integration (RESTful or GraphQL)
• AI first mindset
• Experience in configuring and integrating SaaS Tools (such as Zendesk, Zoho CRM)
• Proven ability to own features end-to-end, from UX and architecture to deployment and monitoring
• A pragmatic, product-focused mindset that balances technical excellence with delivering customer value
• Excellent written and spoken English; German is a plus
• Residency in Germany

What they offer

• Work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich
• Direct impact on climate through accelerating the energy transition
• Flat hierarchies and direct contact with managing directors
• EGYM Wellpass for healthy work-life balance
• Job bike leasing for city bike or e-bike
• Benefits and discounts with Futurebens