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September 22, 2026
Senior Product Engineer — Agentic AI (Python/React)
Senior • Remote
150 - 180 PLN/yr
Łódź, ŁD, Poland
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Quick Facts
Role: Senior Product Engineer — Agentic AI (Python/React)
Focus: End-to-end ownership of fullstack AI product features for accounting workflows
Description
Own end-to-end fullstack features for an AI-powered tax platform used by accounting firms, from problem discovery through design, building frontend/backend, production shipping, and iteration.
Build React interfaces, TypeScript APIs, and Python backend services where AI supports accuracy, transparency, and human judgment.
Use real usage data and customer feedback to decide what to improve next and to shape product and technical decisions.
Responsibilities
Build and maintain fullstack features across AI-powered tax preparation, planning, and review
Design and implement React interfaces, TypeScript APIs, and Python backend services
Take ownership of features from discovery to implementation, release, and iteration
Use usage data and customer feedback to identify improvements
Make product and technical decisions with incomplete upfront definition
Collaborate with engineering, AI, product, and domain experts; incorporate input from customer-facing teams
Keep the codebase clean, typed, and performant while moving fast
Decide when additional polish adds value vs. shipping and learning quickly
Requirements
5+ years commercial experience building fullstack applications (React + Python)
Product mindset focused on user problem/outcomes
Proven ability to take ownership end to end from unclear need to production solution
Comfort making decisions with incomplete information and refining scope iteratively
Pragmatic engineering balancing quality and speed with business impact
Strong collaboration and communication skills (autonomy with teamwork)
Familiarity with cloud infrastructure in Google Cloud and/or Azure
Availability for afternoon work (e.g., 12–20) and on-call 1–2 times per week
Bonus (preferred)
Fast-moving startup/scale-up experience
Experience taking a product/major feature from 0 to 1
Experience building in regulated or otherwise complex domains
Experience with AI/LLM-powered products
Experience using product metrics and customer feedback to decide what to build next
Benefits
Real product ownership with significant autonomy over how to achieve outcomes
AI applied to real, critical professional workflows (not a side feature)
Visible user impact for professionals working daily
Fast feedback loops: ship quickly, validate with users, and iterate from production behavior
End-to-end responsibility influencing UX, backend logic, and technical decisions
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