Co-founder of Contester.Life and former contractor for platforms serving 1M+ users. I replace manual administrative bottlenecks with clean, modern web software.
A selection of consumer platforms and commercial systems I have co-founded, developed, and delivered.
Co-founded and architected the full platform from day zero. Handled national registration surges and co-organized campaigns with corporate brand partners like S&P.
Built the mobile-first frontend application for an anonymous music-sharing platform. Engineered responsive audio player controls, search suggestions, and real-time social sharing.
Executed the full frontend rework for a mobile-first interactive friendship canvas. Rebuilt the responsive touch gestures, custom note creation, and animated feed for 1M+ active visitors.
Engineered Python agentic pipelines chaining Codex CLI and Claude Code with GitLab CI to automate repetitive development and test chores, reducing overhead by 2 full-time developers.
Contributed to the full rewrite of the 300k-user childcare service inside Line. Integrated an automated AI nursebot and seamless parent record migration.
Engineered the mobile user interface for a telehealth consultation app featuring AI-assisted symptom screening and remote doctor scheduling.
Built session scheduling workflows, mentor-mentee matching algorithms, and a multi-tenant administration portal for tracking bookings and payments.
Built Azure OpenAI LLM pipelines for multi-label symptom classification and social listening analytics across public community conversations.
A block-coding application inspired by Scratch, created as a software project exploring graphical AST generation and educational programming logic.
Created automated Word add-in plugins to eliminate manual administrative document formatting and perfectly align nested list structures.
Fast, production-ready software solutions designed to replace administrative bottlenecks.
Replace messy shared spreadsheets with secure cloud dashboards for your team and clients to manage orders, inventory, and customer records.
Connect your forms, spreadsheets, billing, and messaging into automated flows so your team never has to re-type data manually again.
Turn your product concept into a live, production-grade web application ready for real paying customers, with 100% code ownership transferred to you.
A specialized engineering practice led directly by Kawin. Built for rapid execution today, operating with founder-level accountability with plans to expand.
| What Matters to You | Working With Kawin | Traditional Software Agency | Generic Freelancer Platforms |
|---|---|---|---|
| Direct Accountability | 1-on-1 direct communication with the builder | Passed down to junior interns or account managers | Unknown developers, hit-or-miss communication |
| Turnaround Speed | Working demo in Week 1; Shipped in 2–3 weeks | 3 to 6 months of bloated meetings | Often misses deadlines and disappears |
| Development Velocity | AI-accelerated development focused on rapid business results | Over-engineered architectures that require agency retainers | Messy undocumented code that is hard to maintain |
| Pricing & Scope | Fixed, predictable milestone quotes with zero hidden fees | High agency markups & surprise change fees | Hourly billing with little accountability |
| IP Ownership | 100% full IP ownership & clean handover to you | Proprietary contracts & vendor lock-in | Uncertain rights transfer |
A clear, transparent 3-step collaboration from kickoff to production delivery.
We connect via email to discuss your business requirements. You receive a straightforward proposal with exact deliverables, timeline, and fixed price.
I build your software in rapid milestone cycles. Every week, you receive a real interactive staging link to test progress and share feedback.
We deploy your software live, connect your domain, and train your team. Includes 30 days of included bug-fix warranty and handover documentation.
Whether you want to automate repetitive paperwork, build a custom customer portal, or launch a new web app, send me an email. I review every message personally.