10/19/2026 updated
100 % available
Senior Python Backend Engineer | DevOps | AI Integrated Expert | Claue Code
WARSZAWA, Poland
Only remote
BA in Computer ScienceAbout me
Senior Software Engineer with 12+ years of professional experience building and refactoring modern web applications, with strong focus on React, TypeScript, component-based frontend architecture, REST API integration, authentication/authorization, automated testing, and production delivery.
Application Programming Interfaces (APIs)Code ReviewDevOpsNode.jsOpenShiftSystems IntegrationTypeScriptBackendFastAPIDeployment AutomationFull Stack DevelopmentFront End Software DevelopmentCode RefactoringArtificial Intelligence Markup Language (AIML)Jenkins
Frontend Engineering with React and TypeScript
Expertise in building and refactoring modern web applications using React, TypeScript, and JavaScript, with strong focus on component-based architecture, reusable UI patterns, and state management.
DevOps and CI/CD Delivery
Hands-on experience with Docker, Jenkins, OpenShift, and Kubernetes concepts for containerized application delivery, deployment automation, build automation, and CI/CD pipeline maintenance.
API and Security Integration
Proficiency in integrating REST APIs, implementing authentication and authorization flows including OAuth/OIDC concepts, and ensuring secure frontend-backend integration.
Testing and Quality Assurance
Strong background in unit, component, and functional testing, regression testing, code review, quality gates, dependency checks, and security scanning to improve confidence in frontend releases.
AI-Assisted Development
Experience reviewing and refactoring AI-generated frontend code for correctness, security, testability, and maintainability, as well as working with coding assistants and agentic AI concepts.
Backend Support with Python and FastAPI
Additional backend experience using Python and FastAPI to develop REST services, integration endpoints, and lightweight backend tooling supporting full-stack collaboration.
Engineering Leadership and Documentation
Capability in translating business requirements into technical specifications, creating reusable standards, producing technical documentation, and communicating with stakeholders across technical and non-technical teams.
Languages and Core Technologies
Proficiency in TypeScript, JavaScript, Python, HTML5, and CSS3 as core programming and markup languages used across frontend and backend development tasks.
Expertise in building and refactoring modern web applications using React, TypeScript, and JavaScript, with strong focus on component-based architecture, reusable UI patterns, and state management.
DevOps and CI/CD Delivery
Hands-on experience with Docker, Jenkins, OpenShift, and Kubernetes concepts for containerized application delivery, deployment automation, build automation, and CI/CD pipeline maintenance.
API and Security Integration
Proficiency in integrating REST APIs, implementing authentication and authorization flows including OAuth/OIDC concepts, and ensuring secure frontend-backend integration.
Testing and Quality Assurance
Strong background in unit, component, and functional testing, regression testing, code review, quality gates, dependency checks, and security scanning to improve confidence in frontend releases.
AI-Assisted Development
Experience reviewing and refactoring AI-generated frontend code for correctness, security, testability, and maintainability, as well as working with coding assistants and agentic AI concepts.
Backend Support with Python and FastAPI
Additional backend experience using Python and FastAPI to develop REST services, integration endpoints, and lightweight backend tooling supporting full-stack collaboration.
Engineering Leadership and Documentation
Capability in translating business requirements into technical specifications, creating reusable standards, producing technical documentation, and communicating with stakeholders across technical and non-technical teams.
Languages and Core Technologies
Proficiency in TypeScript, JavaScript, Python, HTML5, and CSS3 as core programming and markup languages used across frontend and backend development tasks.
Experience
Professional experience10+ years
Freelancer since2014
Languages
EnglishNative speaker
Project history
Developing and refactoring React/TypeScript applications for remote clients, translating functional requirements into maintainable component architectures, integrating REST APIs and authentication flows, producing reusable templates and frontend standards, and reviewing AI-assisted and AI-generated frontend code for correctness, security, testability, and maintainability.
Owned development and modernization of React/TypeScript applications, decomposing legacy UI logic into reusable components, integrating REST services and authentication/authorization capabilities, implementing unit, component, and functional test coverage, containerizing applications with Docker, maintaining Jenkins CI/CD pipelines, and supporting deployments to OpenShift environments.
Built production web applications with React, TypeScript/JavaScript, HTML, and CSS, developed REST API integrations and supporting Python/FastAPI services, improved engineering quality through automated test frameworks, code review, refactoring, Docker-based local environments, and CI/CD automation.