Lead Full Stack Developer

Polcode SA; Warszawa; Remote; PLN 180,000 - 240,000; Full time

Job summary

A leading global software house is seeking a Lead Full Stack Developer to oversee the development of an AI-powered leasing solution. This remote position offers significant ownership over product development, requiring strong skills in Python, React, and FastAPI. Enjoy a competitive salary, flexible working hours, and a vibrant team culture with a focus on personal development.

Benefits

Multisport card

Private medical care

Life insurance

Competitive salary with paid days off

Professional onboarding process

Work-life balance

Qualifications

• Hands-on experience with Python, React, and FastAPI.
• Strong proficiency with PostgreSQL and optimized queries.
• Experience designing and implementing RESTful APIs.
• Solid understanding of asynchronous processing.
• Experience with Docker and containerized environments.
• Hands-on knowledge of AWS ecosystem.

Responsibilities

• Take full ownership of product features and technical direction.
• Deliver high-quality code and mentor team members.
• Design and implement React/Python applications.
• Integrate AI solutions into fast-growing products.
• Deploy solutions in containerized environments.
• Collaborate with cross-functional teams.

Skills

Python

React

Typescript

FastAPI

PostgreSQL

RESTful APIs

SQLAlchemy

Asynchronous processing (Celery, Redis)

Docker

AWS ecosystem (EC2, S3, RDS, Lambda)

AI-driven tools

Job description

100% remotely

B2B: 120 PLN - 145 PLN / H

Hi, Polcode here!

We’re a global software house matching ambitious developers with challenging projects. Our team of over 100 professionals helps build and improve digital businesses – from SaaS platforms to eCommerce stores, web and mobile applications, and complex enterprise systems

We’re currently seeking a Lead Full Stack Developer for a long-term project with a US-based client who is building an innovative AI-powered solution to streamline leasing agreements. The application simplifies lease negotiations through an intuitive workflow enhanced with AI/ML capabilities. In this role, you’ll take end-to-end ownership of product development, combining strong technical expertise with strategic direction.

This is a long-term project with no defined end date.

Get ready to…

• Take full ownership of product features and initiatives, including product design decisions and technical direction.

• Contribute as a Lead Full Stack Engineer – deliver high-quality code, make architectural decisions, and mentor team members.

• Design and implement React/Python applications and high-performance APIs using FastAPI.

• Integrate AI solutions, including LLMs (e.g., OpenAI API), into fast-growing products.

• Deploy solutions in containerized environments (Docker) and operate within AWS infrastructure (EC2, S3, RDS, Lambda).

• Implement background processing using Celery and Redis.

• Collaborate with cross-functional teams including developers, product owners, and AI specialists to shape both technical and product strategy.

If you have…

• Willingness to work with a US-based client with partial time overlap (3 PM – 6 PM CET).

• Hands-on experience with Python, React, Typescript, and FastAPI.

• Strong proficiency with PostgreSQL and writing optimized queries.

• Experience designing and implementing RESTful APIs.

• Familiarity with SQLAlchemy.

• Solid understanding of asynchronous processing (Celery, Redis).

• Experience with Docker and containerized environments.

• Hands-on knowledge of the AWS ecosystem (EC2, S3, RDS, Lambda).

• Experience with AI-driven tools (e.g., Cursor, GitHub Copilot) is a plus.

• Excellent communication skills and ability to collaborate with stakeholders.

• Independence, ownership mindset, and strong problem-solving skills.

• Fluency in English (spoken and written).

Perks of being a #Polcoder:

• Multisport card, private medical care, life insurance and meaningful gifts to celebrate important days

• Competitive salary with up to 20 paid days off (B2B) and personal development budget

• Professional onboarding process

• We respect your private life – no overtime, no weekend jobs, work-life balance only, promise! Work at times that suit your daily rhythm, from the place of your choice

• Your work is appreciated – we believe in the power of feedback, also the one you give us.

TLDR:

• 100% remote work

• 0% nonsense

We strongly believe that putting people first makes our work better, so we encourage you to develop your career and follow your passion. We wanna do great things with you!