Full Stack Software Engineer (Python / React)

Focal Systems

Polska

Hybrid

PLN 470,000 - 572,000

Full time

14 days+

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Benefits offered by this job

Stock options

Remote in Poland

Full benefits

Job summary

Focal Systems is hiring a Full Stack Software Engineer to join a remote Poland team. You will craft robust Python backends and REST APIs, alongside React/TypeScript frontend features, touching data from IoT devices across retailers worldwide.

You’ll own features end-to-end, ship weekly, and align with product goals. The role emphasizes ownership, data-driven decisions, and collaboration with global colleagues.

Qualifications

6+ years of professional software development experience.
3+ years Python (FastAPI, Flask) or similar backend language.
3+ years React and TypeScript experience.
Solid experience with REST API design and development.
Experience with data-intensive applications and/or microservices architecture.

Responsibilities

Build and maintain scalable backend services with Python (Flask/FastAPI) that process data from 300,000+ IoT devices.
Design and develop REST APIs consumed by internal tools and customer-facing applications.
Build and improve React/TypeScript frontend features — from translating designs into code to refining existing UI components.
Write database queries to analyze how features are actually being used and to debug production issues.
Build deployment monitoring and diagnostic tools that give visibility into system health across geographies.

Job description

Position: Full Stack Software EngineerLocation: 100% Remote in PolandType: This can be structured as a B2B contract or as an Employment Contract with full benefits.Salary: $120,250 - $146,250 + stock options.

Focal Systemsis the industry leader in retail AI solutions. We are headquartered in San Francisco, California with operations in Canada and the UK, and a tech-hub in Poland. We are a Deep Learning first company. Our mission is to automate and optimize brick and mortar retail using deep learning computer vision. Focal Systems has been deployed at scale with some of the top retailers in the world. We seek smart, creative and passionate people who want to help build a great and enduring company and deploy Deep Learning to the world!

What we’re looking for

We're looking for a full-stack engineer with a strong backend foundation (Python) who's equally comfortable working in React when the product needs it. Think 60/40 backend-to-frontend — you'll spend the majority of your time building APIs, data pipelines, and backend services, but you'll regularly contribute to our React/TypeScript frontend and won't treat it as someone else's problem. You'll work on systems that process data from hundreds of thousands of IoT devices deployed across major grocery retail chains worldwide. Your code will power the tools that store employees use daily — from planogram compliance to shelf monitoring powered by computer vision. We're not looking for someone who just writes code to spec. We need someone who understands why they're building something, validates whether it actually solves the problem, and takes ownership of the outcome. You'll dig into data, talk to internal stakeholders, and sometimes prototype directly in production to test an idea before investing in a full build. Our problem space is broad, and our teams lean. Every engineer has massive ownership. We use AI as a pragmatic tool to move faster, not to follow trends. Expect to ship every week in an environment that values shipping over ceremony.

What you will do

Build and maintain scalable backend services using Python (Flask/FastAPI) that process data from 300,000+ IoT devices
Design and develop REST APIs consumed by internal tools and customer-facing applications
Build and improve React/TypeScript frontend features — from translating designs into code to refining existing UI components
Write database queries to analyze how features are actually being used and to debug production issues
Build deployment monitoring and diagnostic tools that give visibility into system health across geographies
Create tools that provide transparency and ease of access into the company's rich datasets stored across varying geographic locations and data formats
Collaborate with engineering teams to ensure data persists in usable formats for frontend, middleware, diagnostics, and Deep Learning pipelines
Remotely debug customer issues across the full stack and find smart solutions that actually work
Partner with the product team to shape user experience — you'll bridge the gap between backend capabilities and what users actually see
Support our customer success team by helping solve client problems
Evaluate incoming requests — assess the effort required vs. potential value delivered
Expand test coverage for critical backend services and frontend user flows
Refactor existing code to reduce complexity and keep things maintainable
Be part of the team that ships weekly releases to customers
Present your work to the company and share what you've shipped

Must Have

6+ years of professional software development experience
3+ years of hands-on experience with Python (FastAPI, Flask or similar) or other Backend Language
3+ years of experience with React and TypeScript
Solid experience with REST API design and development
Experience working with data-intensive applications and/or microservices architecture
Experience with relational databases (MySQL or similar)
Experience with CI/CD pipelines
Applied experience with unit and integration testing
Ability to work independently and take ownership of features end-to-end
Fluent in Polish with advanced English skills (written & spoken)
Flexibility in adjusting working hours to meet the needs of the global and time zone-diverse team (urgent tasks or meetings may occur outside of regular CEST working hours)
Strong work ethic and commitment to completing assigned tasks and projects within established deadlines

Nice to Have