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Hi, I'm Tomasz Bajarbaatar, a Senior Software Engineer with 8+ years of experience designing and developing scalable full-stack web applications across healthcare, fintech, and enterprise domains. I specialize in TypeScript, Next.js, Fastify, and modern web architectures, delivering robust and secure solutions with a focus on maintainable, high-quality code. I'm adept at database design, API development, and cloud-based deployments. I thrive in remote and agile environments, enjoy mentoring teams, and take pride in driving projects to successful completion while keeping security and performance at the forefront.…Hi, I'm Tomasz Bajarbaatar, a Senior Software Engineer with 8+ years of experience designing and developing scalable full-stack web applications across healthcare, fintech, and enterprise domains. I specialize in TypeScript, Next.js, Fastify, and modern web architectures, delivering robust and secure solutions with a focus on maintainable, high-quality code. I'm adept at database design, API development, and cloud-based deployments. I thrive in remote and agile environments, enjoy mentoring teams, and take pride in driving projects to successful completion while keeping security and performance at the forefront.

Tomasz Bajarbaatar

Full Stack Developer, Web Developer, Back-End Developer, +2

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Hi, I'm Tomasz Bajarbaatar, a Senior Software Engineer with 8+ years of experience designing and developing scalable full-stack web applications across healthcare, fintech, and enterprise domains. I specialize in TypeScript, Next.js, Fastify, and modern web architectures, delivering robust and secure solutions with a focus on maintainable, high-quality code. I'm adept at database design, API development, and cloud-based deployments. I thrive in remote and agile environments, enjoy mentoring teams, and take pride in driving projects to successful completion while keeping security and performance at the forefront.…Hi, I'm Tomasz Bajarbaatar, a Senior Software Engineer with 8+ years of experience designing and developing scalable full-stack web applications across healthcare, fintech, and enterprise domains. I specialize in TypeScript, Next.js, Fastify, and modern web architectures, delivering robust and secure solutions with a focus on maintainable, high-quality code. I'm adept at database design, API development, and cloud-based deployments. I thrive in remote and agile environments, enjoy mentoring teams, and take pride in driving projects to successful completion while keeping security and performance at the forefront.

Available to hire

Hi, I’m Tomasz Bajarbaatar, a Senior Software Engineer with 8+ years of experience designing and developing scalable full-stack web applications across healthcare, fintech, and enterprise domains. I specialize in TypeScript, Next.js, Fastify, and modern web architectures, delivering robust and secure solutions with a focus on maintainable, high-quality code.

I’m adept at database design, API development, and cloud-based deployments. I thrive in remote and agile environments, enjoy mentoring teams, and take pride in driving projects to successful completion while keeping security and performance at the forefront.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Javanese

Advanced

Work Experience

Senior Software Engineer at The Codest

August 1, 2025 - October 16, 2025

Designed and implemented full-stack healthcare platform features using TypeScript, Next.js, and Fastify, improving system scalability by 40%. Optimized RESTful APIs and database queries in PostgreSQL and MongoDB, reducing latency by 25%. Led code reviews and established coding standards, ensuring high maintainability and security compliance. Collaborated with cross-functional teams in a remote environment, delivering features ahead of schedule for multiple product releases. Developed automated testing pipelines with CI/CD integration, increasing deployment reliability by 30%. Mentored junior developers on TypeScript best practices and modern web architecture. Implemented real-time data processing and analytics dashboards to support critical healthcare decision‑making workflows.

Software Engineer at EPAM Systems

August 1, 2023 - October 16, 2025

Contributed to full-stack TypeScript projects with Next.js and Node.js, enhancing modularity and code reuse across healthcare applications. Designed and maintained RESTful APIs with PostgreSQL, improving data retrieval efficiency by 20%. Worked with MongoDB for unstructured data storage, ensuring seamless integration with frontend dashboards. Participated in Agile ceremonies and remote team collaborations, consistently meeting sprint objectives. Implemented Git-based version control workflows, improving team productivity and code traceability. Assisted in troubleshooting performance bottlenecks, reducing average response times across core services. Engineered scalable solutions with Fastify and cloud deployment strategies, enabling rapid feature iterations and secure healthcare data handling.

Full Stack Developer at Coca-Cola Ulaanbaatar

April 1, 2019 - October 16, 2025

Developed interactive web applications using JavaScript and Node.js, integrating PostgreSQL databases for dynamic content management. Enhanced frontend performance and user experience, achieving a 15% faster page load time. Collaborated with cross-functional teams to deliver full-stack features under tight deadlines, ensuring high-quality output. Implemented secure and maintainable backend logic supporting enterprise workflows, contributing to a 10% improvement in operational efficiency.