Focal Systems
Full Stack Software Engineer (Python / React)
Remote Backend Engineering role with clear candidate location fit.
PostedJul 11, 2026
Eligible countries1 accepted country
Seniority signalSenior
Work settingRemote
Accepted candidate locations
Poland
Role overview
Full Stack Software Engineer (Python / React)
Requirements and responsibilities
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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:
- Experience with GCP (Google Cloud Platform)
- Experience with Grafana and dashboard creation
- Experience with Kafka or other message brokers
- Experience with Docker, Kubernetes, and Helm charts
- Experience implementing observability solutions (Prometheus, or similar)
- Experience with MUI (Material UI) or Tailwind
- Experience writing Node.js and Bash scripts
- Familiarity with computer vision or IoT data pipelines
Nice to Have:
- Competitive Salary & Attractive Stock
- Paid Time Off
- Team Retreats
- Education grants
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