Hi, I'm Guntur Tirta Reansyah
Remote | Global
Senior Full Stack Developer
I build high-quality, scalable web and mobile applications using React, Next.js, Node.js, and modern technologies. Based in Jakarta, Indonesia, serving clients worldwide. 7+ years experience delivering enterprise-grade solutions remotely.
My Services
As a senior full stack developer, I offer a wide range of services to help you achieve your goals:
Frontend Development
Modern, responsive, and user-friendly interfaces for web apps and sites.
- React & Next.js
- Angular
- Vue.js
- Responsive Design
- UI/UX Design
Backend & API Development
Robust, scalable backends and APIs for any project size.
- Node.js & Express
- C# & ASP.NET
- Python & Django
- REST & GraphQL APIs
- SQL & NoSQL Databases
Mobile Development
Cross-platform mobile apps with native feel and performance.
- React Native
- iOS & Android
- App Store Deployment
AI & Machine Learning
Intelligent solutions using a wide range of AI tools and machine learning platforms.
- ChatGPT, DALL·E, Nebula
- Midjourney, Stable Diffusion
- Google Vertex AI, AWS AI
- Hugging Face, Replicate, Cohere
- OpenAI API, LangChain
- Machine/Deep Learning
- Data Analysis
DevOps & Cloud
Deployment, monitoring, and scaling on modern cloud platforms.
- AWS & Vercel
- CI/CD
- Monitoring
- Scaling
Consulting & Mentoring
Expert advice, code reviews, and project planning to help you succeed.
- Technical Advice
- Code Review
- Project Planning
- Mentoring
About Me
Hi, I'm Guntur Tirta Reansyah—a passionate senior full stack developer based in Jakarta, Indonesia. I love building digital products that solve real problems and create value. My journey in tech spans over a decade, working with startups, agencies, and as a solo freelancer. I believe in clean code, great UX, and continuous learning.
I specialize in remote collaboration and have successfully delivered projects for clients around the world. Whether you're in Jakarta or across the globe, I'm ready to help you build something great—remotely.
My Process
Discovery & Planning
I listen to your needs and help define a clear roadmap for your project.
Design & Prototyping
I create wireframes and prototypes to ensure a user-friendly experience.
Development
I build robust, scalable solutions using modern technologies and best practices.
Testing & QA
I rigorously test and refine to deliver a reliable, bug-free product.
Launch & Support
I deploy your project and provide ongoing support for your success.
My Projects
Here are a few projects I've built as a solo developer. I love working on challenging problems and delivering real value.
Workforce Retention Platform
A comprehensive employee retention platform featuring exit/stay interviews, AI-powered insights, and leadership workshops. Built for psychological safety and meaningful employee feedback.
Practice Interviews
An AI-powered interview coaching service designed to help job seekers improve their interview skills. Features real-time AI coaching, subscription management, and comprehensive interview preparation tools.
Snackr
A comprehensive food delivery app allowing users to order from nearby vendors. Led full project lifecycle including team management, requirements gathering, and deployment. Features both web dashboard and mobile applications.
IMOGENAI
A custom chatbot platform integrating advanced AI tools with RAG capabilities. Features image search functionality, local LLama2 integration, and a comprehensive user interface for seamless AI interactions.
Smart Surveillance System
A real-time object detection surveillance system using computer vision and deep learning. Features automated alerts, detailed analytics, and optimized performance for resource-constrained devices like Raspberry Pi.
What Clients Say
Here's what people say about working with me as a freelance full stack developer.
"Working with Guntur was an absolute pleasure. His technical skills are outstanding, and he consistently delivered high-quality work that exceeded our expectations. His communication and professionalism made our collaboration seamless and successful."
Angeline Wilkes
Client(Workforce Retention)
"Guntur's technical expertise and problem-solving skills are exceptional. He consistently delivers high-quality solutions and is a pleasure to work with."
Ali Zeinali, Ph.D.
CTO(LogicAide)
"Guntur exceeded all my expectations. His attention to detail, timely delivery, and professional communication made our project a huge success."
Jeff
Client(Practice Interviews)
Contact Me
I'm here to help make your digital dreams a reality. Whether you have questions, ideas, or are ready to kickstart a project, just send me a message.
Available for remote work worldwide
Get in Touch
hello@seniordev.org
Phone
+62 087887255453
+1 5015664790
Location
Jalan Pisangan Baru Utara no. 82, Matraman, Jakarta Timur, DKI Jakarta, 13110
Let's Connect
I'm open to remote work, freelance projects, and collaboration opportunities. Drop me a message and I'll get back to you soon!