(Senior) Product Engineer, 1Komma5°
Carbon-neutral infrastructure for homes
Be an early applicant
Carbon-neutral infrastructure for homes
1001+ employees
Be an early applicant
1001+ employees
Company mission
To bring the technologies that will contribute to the energy transition to people efficiently and cheaply.
Role
Who you are
- Strong fullstack proficiency in TypeScript, React / Next.js, and Node.js / NestJS
- Real, demonstrable experience building with LLMs, APIs, or MCPs - production use preferred
- A product and customer mindset: you think about user problems, not just implementation elegance
- Proven ability to own features end-to-end, from rough problem statement to shipped, maintained product
- Experience working closely with PMs and designers in a cross-functional team
- Excellent written and spoken English; German is a plus
- Residency in Germany
Desirable
- Experience with agentic systems, tool-use patterns, or RAG pipelines
- Familiarity with the energy market, construction, sales, or climate tech context
- Prior experience in a startup or scale-up
What the job involves
- You will help shape the virtual assembly line team - our intelligence workflow engine building solutions in Growth and Operations to scale our products globally with maximum efficiency and quality. This is a builder role at the intersection of engineering and product: you co-define what gets built, ship it fast, and use AI as a force multiplier at every step
- As a (Senior) Product Engineer at 1KOMMA5°, you will take end-to-end ownership of features and workflows, making key decisions on architecture, integration layer, and solution design. You'll collaborate closely with product managers, designers, and engineers across teams to ship things that genuinely move the needle for our customers - and you won't be shy about challenging assumptions or proposing a better direction
- Our Stack:
- TypeScript, React / Next.js (frontend) and Node.js / NestJS (backend)
- AI-assisted development with Cursor and Claude Code
- GCP / Vercel, GitHub Actions (CI/CD)
- Linear, Notion, Figma, Miro
- Own feature development end-to-end, from problem framing to production deployment and long-term maintenance
- Build and integrate AI-powered product experiences using LLMs, agents, and tool-use patterns
- Define feature scope together with PMs - engage with the "why", not just the "what"
- Contribute to architectural decisions, API design, and AI integration patterns across the teams
- Keep feedback loops short: prototype, ship to real users, observe, adjust
- Push back when something doesn't make sense and propose better approaches
Our take
As individuals and communities look to lower the carbon footprints of their buildings and homes, there is a need to access products and infrastructure that will enable them to adopt more eco-friendly energy practices. 1KOMMA5° is building a "one-stop shop" for sales, installation and services related to solar, power storage, and EV charging infrastructure, simplifying the energy transition for carbon-conscious people.
1KOMMA5°'s offerings include the energy manager "Heartbeat", a free-to-use platform that can be accessed on mobile, and helps users to make the most out of their self-generated electricity. The company is also building a group of experienced specialist companies that it aims to support in aiding the clean energy transition, not only by investing in them but by granting them access to its operational experience to help them further develop.
A 2024 surge in revenue and profitability (leading to the company's unicorn status in 2023) underscores the market's confidence in 1KOMMA5°'s transformative potential. With a clear trajectory towards exponential growth, fueled by ambitious revenue targets and strategic investments in product development, the company is poised to redefine the energy sector.
Freddie
Company Specialist at Welcome to the Jungle
Insights
248% employee growth in 12 months
Company
Funding (2 rounds)
Jun 2020
$3.3m
SEED
Jul 2018
$1.2m
SEED
Total funding: $4.5m
Company benefits
- You have the opportunity to work in our brand new offices in downtown Hamburg and Berlin and/or remotely
- Use your technical equipment outside of work in your free time
- You are part of a fast-growing company with a lot of development potential , where you can build something independently and feel your impact
- Work in flat hierarchies , take on responsibility during your induction and work directly with parts of the management
- With your work, you support the megatrend “energy and mobility transition” and make a concrete contribution to the sustainable restructuring of our energy infrastructure
- Be active and use the offers of over 7,600 sports partners with the EGYM Wellpass
Company HQ
Hamburg-Neustadt, Hamburg, Germany
Leadership
Philipp Schröder
(Co-Founder & CEO)Co-founder and former CEO of CAPinside.com. Has previously worked as Managing Director at sonnen, and Country Director at Tesla.
Michael Hinderer
(Co-Founder & Chairman of the Board)Senior Advisory Partner at Castik Capital. Co-founded GCA Altium, and was a Founding Partner for Corporate Finance Partners Holding and Apax.
Philip Liesenfeld
(Co-Founder & COO)Was Managing Director at wiwi Fondsmanagement. Worked in several roles at juwi Group including Regional Manager and Project Manager.
Jannik Schall
(Co-Founder & CPO)Former VP of Global Product at sonnen. Worked in Sales & Marketing at Tesla.
Micha Grueber
(Co-Founder & CFO)Former CFO at CAPinside. Previously Commercial Manager at SABIO.
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