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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

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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

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.

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.

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.