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I am a Software Engineer with a passion for systems architecture and backend development. I enjoy solving algorithmic problems and building scalable, real-time applications. I thrive on delivering large-scale, high-performance software systems and enjoy turning complex ideas into reliable, maintainable code. I have hands-on experience with Next.js, Python, PostgreSQL, Socket.IO, Docker, and cloud tooling, and I stay curious about new technologies to improve system design and developer productivity.…I am a Software Engineer with a passion for systems architecture and backend development. I enjoy solving algorithmic problems and building scalable, real-time applications. I thrive on delivering large-scale, high-performance software systems and enjoy turning complex ideas into reliable, maintainable code. I have hands-on experience with Next.js, Python, PostgreSQL, Socket.IO, Docker, and cloud tooling, and I stay curious about new technologies to improve system design and developer productivity.

SUTOLIMIN WIDJAJA

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

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I am a Software Engineer with a passion for systems architecture and backend development. I enjoy solving algorithmic problems and building scalable, real-time applications. I thrive on delivering large-scale, high-performance software systems and enjoy turning complex ideas into reliable, maintainable code. I have hands-on experience with Next.js, Python, PostgreSQL, Socket.IO, Docker, and cloud tooling, and I stay curious about new technologies to improve system design and developer productivity.…I am a Software Engineer with a passion for systems architecture and backend development. I enjoy solving algorithmic problems and building scalable, real-time applications. I thrive on delivering large-scale, high-performance software systems and enjoy turning complex ideas into reliable, maintainable code. I have hands-on experience with Next.js, Python, PostgreSQL, Socket.IO, Docker, and cloud tooling, and I stay curious about new technologies to improve system design and developer productivity.

Available to hire

I am a Software Engineer with a passion for systems architecture and backend development. I enjoy solving algorithmic problems and building scalable, real-time applications. I thrive on delivering large-scale, high-performance software systems and enjoy turning complex ideas into reliable, maintainable code.

I have hands-on experience with Next.js, Python, PostgreSQL, Socket.IO, Docker, and cloud tooling, and I stay curious about new technologies to improve system design and developer productivity.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Software Engineer (RabbitChat project) at RabbitChat

February 1, 2026 - Present

Engineered a full-stack messaging application supporting 100+ concurrent users with real-time bidirectional communication and threaded conversations using Next.js, PostgreSQL, and Socket.IO. Designed scalable PostgreSQL schema and containerized the stack with Docker for environment consistency, reducing onboarding time by 30%. Integrated Clerk for secure authentication and leveraged Cloudinary to optimize media delivery, improving upload scalability by 50%.

Frontend/Full-Stack Developer (Portfolio Website) at Personal Projects

January 1, 2025 - Present

Developed a personal portfolio site with React.js, TypeScript, Tailwind CSS, and Vercel. Reduced deployment time by 80% via an automated CI/CD pipeline for zero-downtime updates and improved mobile usability scores from 60 to 98 on Google Lighthouse through responsive design and accessibility enhancements.