Senior Full-Stack Engineer (Python, React, SQL)

Quick Facts

• Role: Senior Full-Stack Engineer (Python + React + SQL)

• Focus: End-to-end development (frontend to backend) and scalable backend/data solutions

Description

Senior Full-Stack Engineer responsible for designing, developing, and maintaining end-to-end software applications from responsive web interfaces to server-side components. You will optimize backend performance, scalability, and reliability, design database structures and queries, and ensure seamless frontend/backend integration. You’ll write clean, well-documented code, use AI coding agents to accelerate development, and support deployments with DevOps.

Responsibilities

• Design, implement, and optimize responsive, user-friendly web interfaces

• Develop and maintain server-side application components

• Monitor and optimize backend performance, scalability, and reliability

• Collaborate with data engineers, product managers, and designers to integrate frontend and backend

• Write clean, efficient, and well-documented code following best practices

• Use AI coding agents (Cursor, Claude Code, Codex) to support development workflows

• Design and optimize database structures and write efficient queries

• Perform thorough testing and debugging to resolve issues and bottlenecks

• Stay current with industry trends and propose improvements to backend architecture and development processes

• Participate in code reviews and mentor junior developers

• Collaborate with DevOps engineers to deploy and maintain production applications

• Provide technical guidance and support to team members

Requirements

• 5+ years of full-stack development experience

• Proficiency in Python, FastAPI, React, and TypeScript

• Expertise in agentic coding tools such as Claude Code and Cursor

• Familiarity with AWS

• English proficiency at B2 level or higher

Benefits

• Hybrid-by-design mode with opportunity to work remotely within Poland

• Chance to work abroad for up to 60 days annually

• Business-driven relocation opportunities

• Career development programs and mentoring/soft skills/well-being programs

• Certifications (Anthropic, Gemini, GCP, Azure, AWS)

• English classes

• Stable pay

• Employee Stock Purchase Plan with a 15% discount

• Health insurance, multisport, and shopping vouchers

• Referral bonuses up to $2,000

• Offices with entertainment and relaxation zones, table tennis/football, free snacks, and coffee

• Corporate, social, and well-being events

• Contractor option available (B2B terms agreed individually)