Technical Cofounder and AI Lead (Co-Founder Position)
Stockholm, Sweden · Hybrid (Office and Remote) · Full-time
About this role
CircuCity is building the Nordic's first AI-powered circular marketplace that turns second-hand shopping into measurable climate action. Our platform (live at circucity.se) combines ML-driven recommendations, real-time CO₂ tracking, and gamified rewards. We're seeking a Technical Co-Founder with AI/ML expertise to own our entire technology vision and earn 15-25% equity in a company addressing an 80+ billion SEK market.
What We've Built
- Live platform with 700-customers ready to get on board as per our waitlist (93.8% interest)
- Python/Django backend on Verpex, payment integration (Stripe)
- Partnership with a few thrift stores
What You'll Own
- Technical architecture and AI/ML strategy
- Build recommendation engines, smart search, fraud detection, and CO₂ modeling
- Scale from 200 to 5,000+ users by December 2026
- Lead technical hiring and shape engineering culture
- Partner on fundraising and product strategy
Compensation
- 15-20% equity (4-year vest, 1-year cliff)
- Market salary starts at seed round (Q4 2026) or 50K SEK MRR
- 3K SEK equipment budget, flexible hours, remote-friendly
- Support for part-time work during the bootstrap phase
Why Now
- Validated market demand in an 80B SEK growing sector
- Build genuinely innovative AI systems, not clone existing platforms
- Mission-driven: 200+ tons CO₂ saved by end 2026
- Experienced sustainability-focused co-founders (15+ years combined)
We're looking for an entrepreneurial AI/ML expert passionate about sustainability who can commit now for equity and thrive in startup ambiguity.
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About the Company
E-Commerce & Retail · 3-5 · Skellefteå, Sweden
CircuCity’s mission is to make sustainable living practical, accessible, and genuinely engaging. We aim to build a circular marketplace where buying, selling, and reusing products becomes a natural part of everyday life. By encouraging responsible consumption and extending the life cycle of goods, CircuCity seeks to reduce waste, empower conscious consumers, and make circular choices feel simple, valuable, and even rewarding.