Senior Software Engineer

Role Overview

• You will help transform the business of servicing renewable technologies at scale
• With our service and CRM platform, we redefine service processes to accelerate the global energy transition empowering private homes and small businesses to adopt sustainable energy solutions
• 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 collaborate closely with other engineers, product managers, and stakeholders to shape our technical direction and deliver high-impact solutions
• Beyond writing great code, you’ll mentor teammates, champion engineering excellence, and help evolve our development and deployment practices to the next level
• 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
• Continuously improve developer experience by reducing technical debt, automating workflows, and documenting key decisions and operational processes
• Operate effectively in an asynchronous, outcome-oriented environment, managing your work autonomously and maintaining clear communication through documentation and structured updates
• Contribute to lightweight project management by defining milestones, ensuring technical feasibility, and aligning engineering work with product goals

Requirements

• 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
• Curiosity and initiative to explore new tools and methods that improve product quality and engineering efficiency
• Excellent written and spoken English; German is a plus.

Tech Stack

• Assembly
• GraphQL
• JavaScript
• Next.js
• Node.js
• React
• TypeScript

Benefits

• You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen
• With your work, you accelerate the "energy transition" and hence have a direct impact on our climate
• Work with and learn from other super-smart colleagues
• You move in flat hierarchies and have direct contact with the managing directors as well as short decision-making paths
• You will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups
• You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich
• Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass
• Benefits and discounts are yours with Futurebens
• Whether city bike or e-bike
• be flexible with our job bike leasing and do something good for the environment at the same time