Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Senior Software Engineer Merixstudio, Poland | 2022 – Present • Designed and implemented Node.js microservices using TypeScript and PostgreSQL. • Integrated third-party APIs for analytics and payment processing. • Mentored junior engineers, reviewed code, and enforced best practices. • Collaborated with clients to define backend requirements and improve system performance. • Implemented CI/CD pipelines with GitHub Actions and Docker. Full Stack Developer Human Made, Remote | 2019 – 2022 • Developed web applications using React and Node.js with a focus on scalable architecture. • Integrated REST and GraphQL APIs, improving data consistency across services. • Worked in agile teams with daily stand-ups and sprint reviews. • Improved application performance by optimizing SQL queries and caching mechanisms. Backend Developer Scalo, Poland | 2015 – 2019 • Built backend systems in Java and Node.js for enterprise clients. • Designed database schemas and implemented business logic for data-driven applications. • Worked with RESTful services and implemented security and authentication layers. • Collaborated closely with front-end teams to deliver full-stack solutions.…Senior Software Engineer Merixstudio, Poland | 2022 – Present • Designed and implemented Node.js microservices using TypeScript and PostgreSQL. • Integrated third-party APIs for analytics and payment processing. • Mentored junior engineers, reviewed code, and enforced best practices. • Collaborated with clients to define backend requirements and improve system performance. • Implemented CI/CD pipelines with GitHub Actions and Docker. Full Stack Developer Human Made, Remote | 2019 – 2022 • Developed web applications using React and Node.js with a focus on scalable architecture. • Integrated REST and GraphQL APIs, improving data consistency across services. • Worked in agile teams with daily stand-ups and sprint reviews. • Improved application performance by optimizing SQL queries and caching mechanisms. Backend Developer Scalo, Poland | 2015 – 2019 • Built backend systems in Java and Node.js for enterprise clients. • Designed database schemas and implemented business logic for data-driven applications. • Worked with RESTful services and implemented security and authentication layers. • Collaborated closely with front-end teams to deliver full-stack solutions.

RolandPrajwowski





Senior Software Engineer Merixstudio, Poland | 2022 – Present • Designed and implemented Node.js microservices using TypeScript and PostgreSQL. • Integrated third-party APIs for analytics and payment processing. • Mentored junior engineers, reviewed code, and enforced best practices. • Collaborated with clients to define backend requirements and improve system performance. • Implemented CI/CD pipelines with GitHub Actions and Docker. Full Stack Developer Human Made, Remote | 2019 – 2022 • Developed web applications using React and Node.js with a focus on scalable architecture. • Integrated REST and GraphQL APIs, improving data consistency across services. • Worked in agile teams with daily stand-ups and sprint reviews. • Improved application performance by optimizing SQL queries and caching mechanisms. Backend Developer Scalo, Poland | 2015 – 2019 • Built backend systems in Java and Node.js for enterprise clients. • Designed database schemas and implemented business logic for data-driven applications. • Worked with RESTful services and implemented security and authentication layers. • Collaborated closely with front-end teams to deliver full-stack solutions.…Senior Software Engineer Merixstudio, Poland | 2022 – Present • Designed and implemented Node.js microservices using TypeScript and PostgreSQL. • Integrated third-party APIs for analytics and payment processing. • Mentored junior engineers, reviewed code, and enforced best practices. • Collaborated with clients to define backend requirements and improve system performance. • Implemented CI/CD pipelines with GitHub Actions and Docker. Full Stack Developer Human Made, Remote | 2019 – 2022 • Developed web applications using React and Node.js with a focus on scalable architecture. • Integrated REST and GraphQL APIs, improving data consistency across services. • Worked in agile teams with daily stand-ups and sprint reviews. • Improved application performance by optimizing SQL queries and caching mechanisms. Backend Developer Scalo, Poland | 2015 – 2019 • Built backend systems in Java and Node.js for enterprise clients. • Designed database schemas and implemented business logic for data-driven applications. • Worked with RESTful services and implemented security and authentication layers. • Collaborated closely with front-end teams to deliver full-stack solutions.

Available to hire

Senior Software Engineer
Merixstudio, Poland | 2022 – Present
• Designed and implemented Node.js microservices using TypeScript and
PostgreSQL.
• Integrated third-party APIs for analytics and payment processing.
• Mentored junior engineers, reviewed code, and enforced best practices.
• Collaborated with clients to define backend requirements and improve system
performance.
• Implemented CI/CD pipelines with GitHub Actions and Docker.
Full Stack Developer
Human Made, Remote | 2019 – 2022
• Developed web applications using React and Node.js with a focus on scalable
architecture.
• Integrated REST and GraphQL APIs, improving data consistency across services.
• Worked in agile teams with daily stand-ups and sprint reviews.
• Improved application performance by optimizing SQL queries and caching
mechanisms.
Backend Developer
Scalo, Poland | 2015 – 2019
• Built backend systems in Java and Node.js for enterprise clients.
• Designed database schemas and implemented business logic for data-driven
applications.
• Worked with RESTful services and implemented security and authentication layers.
• Collaborated closely with front-end teams to deliver full-stack solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Software Engineer at Merixstudio

January 1, 2022 - October 31, 2025

Designed and implemented Node.js microservices using TypeScript and PostgreSQL. Integrated third-party APIs for analytics and payment processing. Mentored junior engineers, reviewed code, and enforced best practices. Collaborated with clients to define backend requirements and improve system performance. Implemented CI/CD pipelines with GitHub Actions and Docker.

Full Stack Developer at Human Made

January 1, 2022 - January 1, 2022

Developed web applications using React and Node.js with a focus on scalable architecture. Integrated REST and GraphQL APIs, improving data consistency across services. Worked in agile teams with daily stand-ups and sprint reviews. Improved application performance by optimizing SQL queries and caching mechanisms.

Backend Developer at Scalo

January 1, 2019 - January 1, 2019

Built backend systems in Java and Node.js for enterprise clients. Designed database schemas and implemented business logic for data-driven applications. Worked with RESTful services and implemented security and authentication layers. Collaborated closely with front-end teams to deliver full-stack solutions.