Lead GenAI Engineer — FinTech Production AI

Square One Resources; Poland; On-site; PLN 300,000 - 420,000; Full time

Benefits offered by this job

Sport subscription

Private healthcare

Job summary

Square One Resources is seeking a Lead Software Engineer in Poland to own technical direction for AI-powered financial services products. You will lead a product squad, deliver production-grade GenAI solutions, and mentor engineers while collaborating with platform teams.

Bring 10+ years of software experience, deep GenAI/LLM know-how, and strong Python/Node.js expertise. You will shape architecture, drive risk management, and ensure compliant, secure implementations.

Qualifications

• 10+ years of software engineering experience, including production AI/ML systems.
• Proven experience as a Technical Lead / Lead Software Engineer with team leadership.
• Hands-on, production experience with GenAI/LLM systems beyond PoCs.
• Proven design and delivery of LLM workflows, RAG pipelines and agentic AI.
• Experience building client-facing GenAI products in production.
• Deep expertise in Python or Node.js, with solid knowledge of the other.
• Experience designing cloud-native apps on AWS and event-driven/serverless patterns.
• Own architectural decisions, manage technical risk and governance processes.
• Strong prompt engineering, RAG, LLM evaluation and agent frameworks.
• Strong English communication skills – C1 or above.

Responsibilities

• Set the technical direction for the squad and make key architectural decisions.
• Own quality, scalability, maintainability and reliability of solutions.
• Design and develop production-grade LLM solutions including RAG pipelines and agentic workflows.
• Deliver production-grade software using Python and/or Node.js across services and integrations.
• Design cloud-native AWS solutions with event-driven/serverless architectures.
• Mentor engineers through code reviews, design reviews and pair programming.
• Identify and manage technical risks and ensure maintainability.
• Represent engineering in governance processes including architecture reviews.
• Collaborate with platform teams to reuse capabilities and patterns.
• Drive adoption of AI-assisted development tools across the SDLC.
• Ensure AI solutions are secure, auditable and compliant in regulated finance.

Skills

AI/GenAI systems

LLM workflows

RAG pipelines

Agentic AI

Python

Node.js

AWS

Event-driven/serverless

Architectural ownership

Team leadership

Technical governance

Communication

Tools

AWS Lambda

GitHub

React

Job description

Square One Resources is seeking a Lead Software Engineer in Poland to own technical direction for AI-powered financial services products. You will lead a product squad, deliver production-grade GenAI solutions, and mentor engineers while collaborating with platform teams.

Bring 10+ years of software experience, deep GenAI/LLM know-how, and strong Python/Node.js expertise. You will shape architecture, drive risk management, and ensure compliant, secure implementations.