CTO / Founding Product Developer

Salary Unpaid
Equity To be negotiated

About Spritju

Spritju is building the future of energy traceability. Our SaaS platform helps companies track, verify, and report their renewable energy use, enabling real-time climate action, sustainability reporting, and compliance with emerging regulations.

We simplify how companies procure and match energy certificates and report their consumption transparently. Our vision: match every kilowatt-hour of consumption with its generation source, hour by hour. This is where you come in.


🚀 The Role

We’re looking for a hands-on technical leader who’s excited to shape and build a product from the ground up, not just manage a team. You’ll join Spritju as CTO / Founding Engineer, working closely with the founders to define the product architecture, build core features, and scale the platform.

This is an equity-based founding role. We know many great builders keep a day job at first,  that’s fine. What matters is that you’re driven to build ownership, take responsibility, and grow with the company.

We’re not looking for a corporate CTO who delegates everything, we need a builder who can lead, who knows what to build and how to build it.

You’ll be joining at a critical stage: we have a live MVP https://app.spritju.com/ and user feedback. Now we’re focused on making the product faster, clearer, and scalable for global energy markets.


What You’ll Work On

  • Lead product & technical direction: architecture, scalability, and feature roadmap

  • Build core platform features, dashboards, marketplace flows, user experience

  • Automate energy data imports (e.g. APIs, smart meters, market feeds)

  • Design intuitive interfaces and data visualizations for 24/7 traceability

  • Shape Spritju’s technology culture and, over time, build your own team

Project examples:

  • Refactor platform structure for performance and usability

  • Improve dashboards & marketplace UX

  • Automate data pipelines from energy markets or customer APIs

  • Optimize buyer-seller flows on the marketplace

  • Scale platform reliability as we onboard new partners across Europe


About You

You might be a senior engineer, tech lead, or product-minded CTO who’s ready to apply your skills in a founding context.

Must-haves:

  • Strong web development background (e.g. React, Bootstrap, HTML/CSS, APIs)

  • Comfort building and shipping product independently

  • Strategic mindset, can define and prioritize what to build, not just execute

  • Entrepreneurial drive, hands-on problem solver, comfortable with ambiguity

Nice-to-haves:

  • Experience with energy markets, traceability, or sustainability tech

  • Worked on SaaS marketplaces or B2B data platforms

  • Familiarity with API integrations, data pipelines, or blockchain tech

  • Previous early-stage startup or founding team experience


Why Join Spritju?

  • Shape the product and technology direction from day one

  • Equity & ownership, grow with the company you help build

  • Fully remote & flexible hours

  • Work in one of the fastest-growing areas: clean energy & traceability

  • Join a driven, international founding team with a big vision


🌐Website |LinkedIn

For more information or questions please contact us at selin.turman@spritju.com

Perks and benefits

This job comes with several perks and benefits

Skill development
Skill development

Mental health support
Mental health support

Work life balance
Work life balance

Free coffee / tea
Free coffee / tea

Equity package
Equity package

Paid holiday
Paid holiday

See all 9 benefits

Working at
Spritju

As the world pushes to limit global warming, energy remains one of the hardest industries to trace, even though it accounts for 73% of global carbon emissions. Traditional tracking systems rely on basic, annual certificates that lack the detail and transparency needed to drive meaningful change. Companies spend over €24.4 billion annually on these outdated certificates, facing high costs and uncertainty—obstacles that slow down progress toward carbon neutrality. At Spritju, we're changing that. Our B2B marketplace for energy certificates empowers companies to cut costs by 20% and track their energy use with precision, offering certificates with 8,760 times the granularity. By joining Spritju, you’ll play a hands-on role in shaping a more transparent, sustainable energy landscape. Your work will contribute to a future where companies can confidently reduce their carbon footprint, moving us all closer to a sustainable and accountable energy future.

Read more about Spritju

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