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I am an experienced Software Engineer specialized in full-stack development with a strong background in transforming legacy systems into modern, scalable microservices and cloud-native applications. My expertise spans Java, Spring Boot, JavaScript, and modern frontend frameworks, enabling me to deliver high-quality solutions for regulated industries such as finance and pharmaceuticals. Throughout my career, I have successfully led multi-month projects, implemented advanced CI/CD pipelines, and collaborated with diverse teams in Agile environments. I am passionate about adopting emerging technologies to improve system scalability, maintainability, and performance, while mentoring peers and aligning technology with business goals.…I am an experienced Software Engineer specialized in full-stack development with a strong background in transforming legacy systems into modern, scalable microservices and cloud-native applications. My expertise spans Java, Spring Boot, JavaScript, and modern frontend frameworks, enabling me to deliver high-quality solutions for regulated industries such as finance and pharmaceuticals. Throughout my career, I have successfully led multi-month projects, implemented advanced CI/CD pipelines, and collaborated with diverse teams in Agile environments. I am passionate about adopting emerging technologies to improve system scalability, maintainability, and performance, while mentoring peers and aligning technology with business goals.

Rafal Czubek

Full Stack Developer, Developer, Back-End Developer, +5

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I am an experienced Software Engineer specialized in full-stack development with a strong background in transforming legacy systems into modern, scalable microservices and cloud-native applications. My expertise spans Java, Spring Boot, JavaScript, and modern frontend frameworks, enabling me to deliver high-quality solutions for regulated industries such as finance and pharmaceuticals. Throughout my career, I have successfully led multi-month projects, implemented advanced CI/CD pipelines, and collaborated with diverse teams in Agile environments. I am passionate about adopting emerging technologies to improve system scalability, maintainability, and performance, while mentoring peers and aligning technology with business goals.…I am an experienced Software Engineer specialized in full-stack development with a strong background in transforming legacy systems into modern, scalable microservices and cloud-native applications. My expertise spans Java, Spring Boot, JavaScript, and modern frontend frameworks, enabling me to deliver high-quality solutions for regulated industries such as finance and pharmaceuticals. Throughout my career, I have successfully led multi-month projects, implemented advanced CI/CD pipelines, and collaborated with diverse teams in Agile environments. I am passionate about adopting emerging technologies to improve system scalability, maintainability, and performance, while mentoring peers and aligning technology with business goals.

Available to hire

I am an experienced Software Engineer specialized in full-stack development with a strong background in transforming legacy systems into modern, scalable microservices and cloud-native applications. My expertise spans Java, Spring Boot, JavaScript, and modern frontend frameworks, enabling me to deliver high-quality solutions for regulated industries such as finance and pharmaceuticals.

Throughout my career, I have successfully led multi-month projects, implemented advanced CI/CD pipelines, and collaborated with diverse teams in Agile environments. I am passionate about adopting emerging technologies to improve system scalability, maintainability, and performance, while mentoring peers and aligning technology with business goals.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Work Experience

Senior Software Engineer at EncPoint

January 1, 2019 - Present

Led the transformation of a monolithic legacy application into a modern full-stack microservices architecture using Java 17, Spring Boot 3.4, TypeScript, and Next.js 14, significantly improving scalability and maintainability. Developed a microservices platform supporting financial and pharmaceutical clients with rapid microsite creation for webcast events including REST/JSON APIs integration with OAuth2/JWT authentication, event management, user registration, and real-time Q&A/chat features for hundreds of live events annually. Built cloud-native applications on Google Cloud Platform enabling horizontal scalability and 50% higher traffic capacity. Managed relational MySQL databases with JPA/Hibernate ORM and Flyway, and created responsive front-end interfaces with React 18, TypeScript, and Tailwind CSS. Established CI/CD pipelines using GitHub Actions and Azure DevOps automating Docker deployments and Maven builds, reducing release times by 35%. Integrated cutting-edge technology such

Full-Stack Developer at Rampard

January 1, 2019 - August 21, 2025

Delivered comprehensive full-stack webcasting solutions utilizing Java, Spring, and JavaScript to manage live and on-demand streaming for up to 200 annual events. Maintained scalable back-end infrastructure and dynamic front-end interfaces, ensuring 99.9% uptime for critical broadcast services. Collaborated closely with clients to customize solutions that improved user experience and helped retain clients through tailored implementations.

Freelance Software Developer at Self-employed

January 1, 2006 - August 21, 2025

Developed pioneering webcasting technologies including an RPC-based system for remote encoder control and automated live streaming scripts that synchronized slideshow presentations, establishing the foundation for technologies later used by Rampard Systems and EncPoint. Delivered full-stack consulting by designing and deploying custom web applications using Java, Perl, and JavaScript for small business clients to enhance visibility and engagement.

Java Developer at On2 Technologies, Inc.

January 1, 2001 - August 21, 2025

Contributed to the development and maintenance of a full-stack content delivery platform for On2's video materials using Java and JSP, ensuring reliable delivery of extended video content. Partnered with engineering teams to integrate new features to improve platform functionality.

Web Developer at Blackhammer Productions

December 31, 2000 - August 21, 2025

Built full-stack web applications for clients such as Bombardier's Flex Jet using Perl, JSP, and Java. Designed cross-browser compatible websites featuring dynamic front-end and robust back-end components. Collaborated with designers and managers to deliver timely client-focused solutions under tight deadlines.

Senior Software Engineer at EncPoint

January 1, 2019 - Present

Transformed a monolithic legacy application into a scalable full-stack microservices architecture using Java 17, Spring Boot 3.4, TypeScript, and Next.js 14. Developed a microservices platform supporting financial and pharmaceutical sectors, enabling rapid microsite creation for webcast events with REST/JSON APIs and OAuth2/JWT authentication. Built cloud-native applications on Google Cloud Platform with Cloud Run, Artifact Registry, and Cloud SQL, improving horizontal scalability and handling 50% higher traffic. Integrated MySQL databases with JPA/Hibernate and Flyway, crafted responsive UIs using React 18, Next.js App Router, TypeScript, and Tailwind CSS. Established CI/CD pipelines with GitHub Actions and Azure DevOps, automating Docker deployments and reducing release times by 35%. Explored technologies like GraalVM, Redis, RabbitMQ, and monitoring with Prometheus/Grafana, resulting in a 25% reduction in incident resolution time. Mentored peers and worked cross-functionally within

Full-Stack Developer at Rampard

January 1, 2019 - August 21, 2025

Delivered full-stack webcasting solutions using Java, Spring, and JavaScript for up to 200 annual live and on-demand streaming events. Maintained scalable backend infrastructure and dynamic frontend interfaces, ensuring 99.9% uptime for critical broadcast services. Collaborated directly with clients to customize solutions enhancing user experience and client retention.

Freelance Software Developer at Self-employed

January 1, 2006 - August 21, 2025

Pioneered RPC-based webcasting systems for remote encoder control and automated live stream scripts which synchronized slideshow presentations for events, forming the technological foundation for subsequent webcasting solutions at Rampard Systems and EncPoint. Provided full-stack consulting and developed custom web applications for small businesses using Java, Perl, and JavaScript, boosting client visibility and engagement.

Java Developer at On2 Technologies, Inc.

January 1, 2001 - August 21, 2025

Contributed to the development and maintenance of a full-stack content delivery platform for On2's video materials using Java and JSP. Enhanced platform reliability and extended video content delivery. Collaborated with engineering teams to integrate new features improving platform functionality.

Web Developer at Blackhammer Productions

December 31, 2000 - August 21, 2025

Developed full-stack web applications for clients including Bombardier’s Flex Jet using Perl, JSP, and Java. Delivered client-focused solutions under tight deadlines, working cross-browser compatible websites with dynamic frontend and robust backend components.