Senior Software Engineer - Backend (m/f/d)

1KOMMA5° is building the energy system of the future with Heartbeat AI. They are seeking a Senior Software Engineer - Backend to design and implement solutions for Home Energy Management Systems, collaborating with a cross-functional team to scale their services.

Responsibilities:

• Plan, build and shape multiple business critical applications and integrations
• Thoughtfully create, implement, evaluate and deploy software solutions to solve complex problems in an elegant way
• Lay the foundation and architecture to scale globally
• Foster a culture of experiment-driven innovation within the team
• Promote teamwork and successful project execution
• Improve developer satisfaction by constantly avoiding/reducing tech-debt, automating as much as possible and documenting decisions, runbooks etc
• Work across your boundaries and interact in close collaboration with our stakeholders and other teams

Requirements:

• Proven experience in developing, shipping and monitoring scalable backend software solutions with TypeScript from several past projects
• Experience with NestJS in large scale applications is a clear plus - otherwise, experience with similar frameworks
• Able to communicate ideas clearly and concisely both in written and spoken form (our working language is English)
• You actively seek input from your peers and create visibility where it's lacking
• A broad knowledge of architectural patterns and experience implementing them with modern devops best practices
• Worked in a cross-functional team being responsible for the full software development lifecycle, including leading project orchestration
• Interest in wearing different (metaphorical) hats: we expect our engineers to engage in product thinking and care deeply about business impact
• You feel comfortable with ambiguity and ask for what you need to get the job done
• You are excited to leverage AI tools to enhance your impact, including agentic coding
• Experience in Next.js or Flutter - We are experimenting with more fullstack roles, though you will remain primarily a backend expert
• Experience with CI/CD using GitHub Actions and cloud infrastructure (GCP/Vercel)
• A passion for the home energy and renewable sector