Full-stack Development
End-to-end web applications built on Next.js, TypeScript and Postgres — from schema design to deployment.
- Next.js & React
- API & database design
- Performance tuning
Hello, I'm
Rosid Mustofa
Full-stack Web Developer
I build modern web experiences with high security.
Find me on
rosid@portfolio:~
$ whoami
Rosid Mustofa — Full-stack Developer
$ security --status
Secure by design. Always.
$ build --future
Compiling ideas into impact
- Projects delivered
- 60+
- Years experience
- 8+
- Students taught
- 2k+
- Security audits
- 40+
Available for freelance
About Me
Passionate about creating impactful digital experiences
I'm a full-stack developer based in Jakarta with 3+ years of experience building web applications. I specialize in React ecosystem and love turning complex problems into simple, beautiful solutions.
When I'm not coding, you'll find me exploring new technologies, contributing to open source, or sharing knowledge through my blog. I believe great software is built with attention to detail and genuine care for the end user.
Currently available for freelance projects and exciting collaborations.
Jakarta, Indonesia
Selected work
Sentinel
2025A real-time threat monitoring dashboard for security operations teams
- Next.js
- TypeScript
- PostgreSQL
- WebSockets
Atlas
2025Document intelligence platform with retrieval-augmented search
- Python
- LangChain
- pgvector
- FastAPI
VaultPay
2024PCI-conscious payment flow for a regional fintech startup
- Next.js
- Stripe
- Node.js
- AWS
Campus LMS
2024Learning management system serving 12,000 university students
- React
- GraphQL
- PostgreSQL
- Docker
Services
AI Engineering
Practical AI features that hold up in production: retrieval pipelines, agents, and evaluation harnesses.
- RAG pipelines
- LLM agents & tooling
- Model evaluation
Security Auditing
Threat modelling and hands-on penetration testing to find issues before your users do.
- Penetration testing
- Secure code review
- OWASP hardening
Teaching & Workshops
University lecturing and team workshops on secure development and modern web architecture.
- University lecturing
- Team training
- Technical mentoring
Stack
- Frontend
- TypeScript
- React
- Next.js
- Tailwind CSS
- Vue
- Backend
- Node.js
- Python
- Go
- PostgreSQL
- Redis
- GraphQL
- AI / ML
- PyTorch
- LangChain
- Vector databases
- Vercel AI SDK
- Security
- Burp Suite
- Metasploit
- Wireshark
- OWASP Top 10
- Nmap
- Infrastructure
- Docker
- Kubernetes
- AWS
- Vercel
- CI/CD
Information
I work across the full stack, but what ties my work together is a security-first mindset. Whether I'm shipping a product, wiring up an AI pipeline, or lecturing a room of students, the goal is the same: systems that are correct, fast, and hard to break.
Indonesia — available worldwide
- 2019 — Present
Freelance Full-stack Developer
Independent
Building secure web platforms for startups and institutions across fintech, education, and healthcare.
- 2021 — Present
Lecturer, Informatics Engineering
University
Teaching web engineering, network security, and applied machine learning at undergraduate level.
- 2020 — Present
Security Consultant
Various clients
Penetration testing and secure architecture reviews for public-facing web applications.
- 2017 — 2019
Software Engineer
Technology agency
Delivered client web applications and internal tooling as part of a cross-functional product team.
Contact
If you would like to discuss a project or just say hi, I'm always down to chat.
- GitHub
- @rosidmustofa
- @rosidmustofa