April 10, 2026

Senior Full-Stack Developer - React & Python

Senior • Remote

25,000 - 33,000 PLN

Warsaw, Poland

Ignite healthcare innovation - craft impactful dashboards and AI-powered tools for smarter patient insights

100% remote work

As a Senior Full-Stack Developer, you will be working for our client, a leader in healthcare analytics and AI-driven solutions. You will help build sophisticated data visualization dashboards, develop cutting-edge CLI utilities, and integrate large language models to revolutionize healthcare data exploration and research workflows. This is a unique opportunity to shape the future of healthcare technology while advancing your career in a dynamic, innovative environment.

Your main responsibilities:

  • Build responsive front-end applications using TypeScript and React (Vite, React Router) for healthcare analytics dashboards. (60% React)

  • Design and implement data visualizations with Recharts, Visx, and D3.js for patient journeys, operational metrics, and geographic insights.

  • Develop Python CLIs and backend services with FastAPI, focusing on data pipeline management and AI integrations. (40% Python)

  • Integrate with LLMs (OpenAI GPT-4, Claude, Azure OpenAI) for entity extraction, content generation, and real-time AI interactions.

  • Create and maintain REST APIs to serve analytics data and connect with external APIs and databases (PostgreSQL/Supabase).

  • Build developer tools with clear documentation, write tests with pytest, and participate in code reviews.

  • Collaborate on deploying cloud-native solutions on Azure, leveraging CI/CD pipelines and real-time features.

  • Ensure healthcare data privacy and security considerations in all user-facing and backend components.

You're ideal for this role if you have:

  • Over 5 years of experience in full-stack development, with a focus on React and Python.

  • Strong expertise in TypeScript, React hooks, and modern front-end frameworks.

  • Proven experience with data visualization libraries: Recharts, Visx, and D3.js.

  • Hands-on backend experience with Python, including CLI development, async programming, and REST API design.

  • Practical knowledge of integrating LLM APIs like OpenAI, Claude, or Azure OpenAI.

  • Familiarity with database querying, data transformation, and API integration.

  • Git proficiency, collaborative workflow experience, and good documentation practices.

It is a strong plus if you have:

  • Cloud experience with Azure or AWS, including deployment and CI/CD solutions.

  • Front-end advanced skills such as complex interactive visualizations and design systems.

  • Building agent-friendly interfaces and understanding autonomous AI workflows.

  • Experience in healthcare domain, HIPAA compliance, or healthcare terminology.

Language Required for the role:

  • Fluent English (good command in both spoken and written)

Eligibility for the role:

  • Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

8668

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Senior

Hybrid

Nashville, TN

🏢 Summary: Senior Full Stack Development Engineer responsible for designing and building scalable backend services and APIs supporting healthcare and insurance transaction systems. The role focuses on Java-based backend architecture, distributed systems, data processing, and cloud-native development with strong emphasis on reliability, performance, and integration. The position involves modern DevOps practices, AI-assisted development tools, and high-volume transaction processing environments. 🗂️ Requirements: Bachelor’s degree in Computer Science or related field or equivalent experience, 8+ years of backend software engineering experience, Strong experience in Java, Experience with Spring Boot or similar frameworks, Strong knowledge of RESTful APIs, Understanding of distributed systems design, Strong SQL skills (Oracle preferred), Experience with NoSQL databases, Experience with AWS, Azure, or GCP, Experience with AI-assisted development tools (Copilot, Claude, etc.), Experience with Docker, Experience with Kubernetes, Familiarity with CI/CD pipelines (e.g., Jenkins), Experience building scalable backend systems, Understanding of Agile methodologies 📃 Skills: Java, Spring, SQL, Oracle, NoSQL, REST, AWS, Azure, GCP, Docker, Kubernetes, Jenkins, Kafka, RabbitMQ, Elastic, Playwright, Postman, ELK, Prometheus, Datadog, Grafana, Claude, Copilot, Gemini, Windsurf 🏢 Description: About the Role This is an opportunity to join a growing company transforming healthcare technology through modern electronic billing, payments, and secure data exchange solutions across the Property & Casualty and Healthcare industries. As a Senior Full Stack Development Engineer, you will design, build, and maintain scalable applications and APIs that power mission-critical healthcare and insurance workflows. This role focuses on backend architecture, service development, data processing, and system integration, ensuring high performance, reliability, and maintainability across platforms. You will collaborate with product, engineering, implementation, and QA teams to deliver robust backend capabilities that support complex transaction processing and customer integrations. The role leverages AI-assisted development tools (Claude Code, GitHub Copilot) and modern testing approaches to improve efficiency and ensure system reliability. This is a hybrid role based in Concord, California, with an expectation of working in the office at least two days per week. What You'll Do - Design, develop, and maintain backend services, APIs, and core platform components - Build scalable systems using Java and Spring Boot or similar frameworks - Develop and support RESTful APIs and integrations across internal and external systems - Participate in system design and architecture discussions - Support complex data processing, transformation, and integration workflows - Ensure backend systems are secure, reliable, and performant under high transaction volumes - Utilize AI-assisted development tools to accelerate development and improve code quality - Contribute to CI/CD pipelines and deployment automation - Write clean, maintainable, and testable code with strong unit and integration test coverage - Improve system observability through logging, monitoring, and diagnostics - Troubleshoot production and integration issues What You'll Need - Bachelor’s degree in Computer Science or related field, or equivalent experience - 8+ years of backend software engineering experience - Strong experience in Java and backend service development - Solid understanding of RESTful APIs and distributed systems design - Experience with Spring Boot or similar backend frameworks - Strong SQL experience (Oracle preferred) and familiarity with NoSQL databases - Experience with cloud platforms (AWS, Azure, or GCP) - Experience with AI-assisted development tools (Copilot, Claude, etc.) - Experience with Docker and Kubernetes - Familiarity with CI/CD pipelines (Jenkins or similar tools) - Deep understanding of Agile development methodologies - Experience building maintainable, scalable backend systems Nice to Have - Experience in healthcare, insurance, or financial services systems - Experience with event-driven architectures or messaging systems (Kafka, RabbitMQ) - Familiarity with Elastic Cloud - Experience with API testing or workflow automation tools (Playwright, Postman) - Knowledge of observability tools (ELK, Prometheus, Datadog, Grafana) - Experience working with sensitive data and compliance requirements (HIPAA / PHI / PII) Pay Transparency Compensation for this position ranges from $120,000 to $150,000 USD. In addition to base pay, employees may be eligible for performance-based bonuses and a comprehensive benefits package, including medical, dental, and vision coverage, 401(k) with company match, and paid time off.

Technology

ITDS

Senior Python/React Fullstack Developer – Product Maintenance & Support

Senior

Remote

Warsaw, Poland

25,200 - 31,500 PLN

🏢 Summary: Senior Full Stack Developer role focused on maintaining, enhancing, and scaling an existing live product in a fully remote EU-based setup. The position involves working across backend and frontend layers to improve functionality, fix issues, and implement new features based on user feedback. You will contribute to product stability, performance, and continuous improvement in a mission-critical environment. 🗂️ Requirements: 6+ years experience as Full Stack Developer, Strong backend experience with Python, Strong frontend experience with React, Understanding of databases, Experience with cloud environments, preferably Azure, Knowledge of full software development lifecycle, Experience maintaining and improving existing products, Strong debugging and troubleshooting skills, Fluent English, Legal right to work in the EU 📃 Skills: Python, React, Azure, SQL, Cloud, Git, REST, JavaScript, HTML, CSS 🏢 Description: Unleash your full potential — elevate a live product by supporting, refining, and evolving real-world solutions! EU-based opportunity with a fully remote work model (5 days/week). As a Senior Full Stack Developer , you will be working for our client, a leading software environment where your expertise directly impacts a live, client-specific solution. You’ll support, enhance, and maintain an established product, ensuring it remains robust, user-friendly, and scalable as new users and needs emerge. This role offers a unique chance to contribute to a mission-critical platform while advancing your career in a dynamic, innovative environment. Your main responsibilities: Support ongoing development and maintenance of an existing software product. Troubleshoot and resolve bugs reported during onboarding and daily usage. Implement UI/UX improvements and new features based on user feedback. Work across backend and frontend layers to ensure seamless functionality. Collaborate with stakeholders to understand issues, prioritize improvements, and deliver practical solutions. Help onboard new users by maintaining platform stability and efficiency. Contribute to continuous code quality, usability, and performance enhancements. You're ideal for this role if you have: 6+ years of experience as a Full Stack Developer / Engineer. Hands-on experience with Python on the backend. Strong experience with React on the frontend. Basic to solid understanding of databases and cloud environments, preferably Azure. Knowledge of the software development lifecycle from both frontend and backend perspectives. Experience maintaining and improving existing products rather than only building from scratch. Ability to identify issues, debug effectively, and deliver clean, practical fixes. Strong problem-solving skills with a product-minded approach. Sensitivity to UI/UX and user needs. It is a strong plus if you have: (optional) Experience working on client-facing internal tools or single-client environments. Enthusiasm for AI and understanding of how it works. Exposure to product support, user onboarding, or post-launch optimization. Familiarity with feature request handling and iterative product improvements. Knowledge of cloud-based architecture in Azure. Language required for this role: Fluent English Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.