Oleg Koval markOleg Koval

Work together

Four ways in: full-time, fractional, co-founder, or open source. Based in Den Haag, NL. Comfortable with EU contracts and fully remote. English, Dutch, Ukrainian.

Full-time

CTO, Engineering Manager, Staff Engineer

Fintech, SaaS, AI-first teams. Ten plus years leading delivery, shaping architecture, and growing engineers. EU and remote. Happy to talk through scope, team shape, and trajectory before a formal process.

Fractional / freelance

Focused engagements, paid by the week

Short bets with a clear outcome: API design and hardening, AWS serverless migrations, AI feature rollout, team or codebase audits, interim tech leadership. Usually 4 to 12 weeks.

Co-founder / founding engineer

Technical co-founder for a product with real pull

Open to joining an early team with customer evidence, a clear wedge, and room for equity plus scope conversation. Bias toward fintech, ecom, mobility, automation, AI-native tooling, and developer products.

OSS partnership

Sponsorship, co-maintainership, commercial support

Maintainer of libraries and CLIs used in production by other teams. Open to sponsorship, co-maintainership, and paid support contracts where an upstream needs a reliable hand.