Founding Engineer - AI-Driven FinTech Platform Builder

0to9 Ab; Wrocław; On-site; PLN 180,000 - 260,000; Full time

Job summary

0TO9 is an early-stage bank for entrepreneurship, building a stealth banking product with a small, agile team. You will shape architecture, contribute to product thinking, and work directly with founders to implement an ambitious, AI-driven platform.

Ideal candidates ship real software, thrive in ambiguity, and balance business needs with sound engineering judgment. The role emphasizes pragmatic generalism across the stack and a mindset focused on fast, high-impact delivery.

Qualifications

• Shipping real products and turning ideas into useful software.
• Comfort with ambiguity and iterative problem solving.
• Ability to engage in customer conversations and influence technical choices.
• Pragmatic, cross-stack capabilities across backend, frontend, and DevOps.

Responsibilities

• Prototype ideas quickly and validate with real users.
• Join customer conversations to shape product and business model.
• Make fast, reversible architectural decisions and discard what doesn’t work.
• Define tooling, standards, and workflows for future teammates.

Skills

Builder

AI-native

Ambiguity tolerance

Business-minded

Generalist

Tools

Agentic tools

Claude Code / Cursor

Job description

0TO9 is an early-stage bank for entrepreneurship, building a stealth banking product with a small, agile team. You will shape architecture, contribute to product thinking, and work directly with founders to implement an ambitious, AI-driven platform.

Ideal candidates ship real software, thrive in ambiguity, and balance business needs with sound engineering judgment. The role emphasizes pragmatic generalism across the stack and a mindset focused on fast, high-impact delivery.