Praca w miastach:Praca IT Warszawa•Praca IT Kraków•Praca IT Wrocław•Praca IT Szczecin•Praca IT Poznań•Praca IT Lublin•Praca IT Katowice•Praca IT Bydgoszcz•Praca IT Łódź•Praca IT Białystok•Praca IT Toruń•Praca IT Gdańsk
Stanowiska:Grafik komputerowy praca•Tester gier praca•Programista praca•Tester oprogramowania praca•Frontend Developer praca•Data scientist praca•Tester manualny praca•Tester praca•Analytics praca•Tester aplikacji praca•Programista java praca•Web developer praca
Technologie i narzędzia:Python praca•Cyberbezpieczeństwo praca•Java praca•Bazy danych praca•Cisco praca•C++ praca•Javascript praca•SQL praca•Business Intelligence praca•Delphi praca•Wordpress praca•Testowanie aplikacji praca•C# praca•PHP praca
Specjalizacje:Backend praca•Devops praca•Frontend praca•Full-stack praca•GameDev praca•Mobile praca•Embedded praca•Architecture praca•QA/Testing praca•Security praca•AI/ML praca•Big data science praca•Helpdesk praca•IT admin praca•Agile praca•Product Management praca•Project Management praca•UX/UI praca•Business analytics praca•SAP & ERP praca•System analytics praca•PO/PM praca•Scrum master praca•Analityka praca•Data analytics & BI praca
Offer summary
(Summary generated by AI based on the full job description)
The project is an AI-native enterprise platform for modeling policies, workflows and operational knowledge so AI agents can operate in complex business environments. Primary stack includes React, TypeScript for frontend and Node.js, Python for backend, with daily use of AI tools like Codex, Claude Code, AI agents. Responsibilities cover building end-to-end product features, designing APIs and backend logic, translating ambiguous requirements into scalable solutions, collaborating with Product and Design, deploying and supporting production, and ensuring code quality, security and observability.
AI Full-Stack Product Engineer - Warsaw onstie
Company: SQUARE ONE RESOURCES sp. z o.o.
from: 28 September 2026
to: 28 October 2026
120 - 170 złnet (+ VAT)/ hr.B2B contract
Offer parameters
level:senior • expert
working mode:full office
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
Node.js
Python
React.js
TypeScript
Codex
cloude
AI
LLM
NLP
RAG
Our requirements
- Strong Mid/Senior-level experience building and shipping production web applications.
- Strong experience with React and TypeScript or an equivalent modern web stack.
- Solid backend development experience, including designing and implementing APIs, business logic, and data flows.
- Experience with Node.js, Python, or both is a strong advantage.
- Strong product mindset and ability to identify unnecessary complexity and improve user experiences.
- Ability to work independently and make sound decisions when requirements are incomplete or ambiguous.
- Experience taking ownership of features or product areas from concept to production.
- Good understanding of software architecture, testing, performance, and production quality.
- Security-conscious approach to software development, especially when working with sensitive data.
- Strong communication skills and ability to collaborate effectively with Engineering, Product, and Design teams.
- Practical experience using AI tools as part of everyday software development.
- Willingness to work from the Warsaw office.
Optional
- Experience building AI-powered products, such as:
- AI chat interfaces
- AI search
- recommendation systems
- workflow automation
- AI agents / agentic systems
- Experience with Python and/or Node.js on the backend.
- Experience owning product areas with limited supervision.
- Strong knowledge of web performance and accessibility.
- Experience working with complex enterprise applications.
- Experience with observability, instrumentation, logs, traces, or developer tooling.
Your responsibilities
- Build and deliver end-to-end product features across frontend and backend.
- Develop high-quality user-facing experiences using React and TypeScript.
- Design and implement APIs, backend logic, and data flows.
- Translate ambiguous product requirements into practical and scalable technical solutions.
- Work closely with Product and Design to shape and deliver new features.
- Take ownership of features from problem discovery through development, release, and production support.
- Improve product usability, performance, reliability, accessibility, and overall UX.
- Make sensible decisions around scope, architecture, and technical trade-offs.
- Instrument and monitor features to understand their behavior in production.
- Maintain high standards of code quality, testing, security, and maintainability.
- Use AI development tools such as Codex, Claude Code, and AI agents as part of your daily engineering workflow.
- Contribute to improving internal engineering tools, workflows, and development practices.
About the project
We are looking for a AI Full-Stack Product Engineer to join a fast-growing company developing an AI-native enterprise platform.
The product enables companies to model their policies, workflows, and operational knowledge so that AI agents can reliably operate in complex business environments.
The platform is already used by well-known international enterprise customers, with tens of thousands of users and a strong focus on security, reliability, and enterprise integrations.
You will join a small, highly autonomous engineering team where developers have significant ownership and influence over the product. This role combines hands-on software engineering, product thinking, and AI-native development.
This is how we organize our work
This is how we work
at the client's site
SQUARE ONE RESOURCES sp. z o.o.
At Square One Poland we link IT experts with the business. With over 25 years of experience, we specialize in recruitment processes on a global scale. Despite years of experience, we still have a startup DNA and this is our advantage. Our offices are located in London and Warsaw, however, we can reach clients from all over the world, from start-ups to big worldwide corporations.
This is how we work
AI Full-Stack Product Engineer - Warsaw onstie
120–170 zł / hr. (B2B)
I apply to:
SQUARE ONE RESOURCES sp. z o.o.
Warszawa, Masovian
Need more information?
- Make sure the body of the offer doesn’t already include what you’re looking for.
- Ask a question if you need more information you’re interested in.
- We’ll forward your question to the employer and aim to provide a response within 3 business days.