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DONIWICAKSONO

Full-stack Dev // 技術者
Timezone / 時間帯
UTC+7 / ASIA
Status / 状況
OPEN TO OFFERS
Core Focus / 領域
AI / MULTI-AGENT
Stack / 技術
TS / HONO / REACT
TYPESCRIPT   ✦   REACT   ✦   ASTRO   ✦   BUN   ✦   HONO   ✦   MASTRA   ✦   CLOUDFLARE   ✦   AI INTEGRATION   ✦   TANSTACK   ✦   SOLO DEVELOPER   ✦   TYPESCRIPT   ✦   REACT   ✦   ASTRO   ✦   BUN   ✦   HONO   ✦   MASTRA   ✦   CLOUDFLARE   ✦   AI INTEGRATION   ✦   TANSTACK   ✦   SOLO DEVELOPER   ✦   TYPESCRIPT   ✦   REACT   ✦   ASTRO   ✦   BUN   ✦   HONO   ✦   MASTRA   ✦   CLOUDFLARE   ✦   AI INTEGRATION   ✦   TANSTACK   ✦   SOLO DEVELOPER   ✦   TYPESCRIPT   ✦   REACT   ✦   ASTRO   ✦   BUN   ✦   HONO   ✦   MASTRA   ✦   CLOUDFLARE   ✦   AI INTEGRATION   ✦   TANSTACK   ✦   SOLO DEVELOPER   ✦   TYPESCRIPT   ✦   REACT   ✦   ASTRO   ✦   BUN   ✦   HONO   ✦   MASTRA   ✦   CLOUDFLARE   ✦   AI INTEGRATION   ✦   TANSTACK   ✦   SOLO DEVELOPER   ✦   TYPESCRIPT   ✦   REACT   ✦   ASTRO   ✦   BUN   ✦   HONO   ✦   MASTRA   ✦   CLOUDFLARE   ✦   AI INTEGRATION   ✦   TANSTACK   ✦   SOLO DEVELOPER   ✦   TYPESCRIPT   ✦   REACT   ✦   ASTRO   ✦   BUN   ✦   HONO   ✦   MASTRA   ✦   CLOUDFLARE   ✦   AI INTEGRATION   ✦   TANSTACK   ✦   SOLO DEVELOPER   ✦   TYPESCRIPT   ✦   REACT   ✦   ASTRO   ✦   BUN   ✦   HONO   ✦   MASTRA   ✦   CLOUDFLARE   ✦   AI INTEGRATION   ✦   TANSTACK   ✦   SOLO DEVELOPER   ✦  
01 // 個人データ

AboutMe

CONFIDENTIAL // 機密

> Full-stack developer working solo. I handle frontend to infrastructure because I move faster when the whole system is one person's responsibility.

My primary stack centers on React and TypeScript, complemented by modern tools like Hono and Mastra for specialized AI agent development. Deployed on Cloudflare Workers. Rapid prototyping is my strength. AI integration and edge/serverless functions are where I currently focus, specifically multi-agent systems and deterministic control flow where tool selection, state management, and predictable execution matter. I work best on projects where continuity matters and you want one person who owns the entire architecture.

Edu / 学歴
B.Software Engineering
Location / 拠点
Central Java, ID
02 // 開発記録

SelectedWorks

PROJECT 01

JustHireMe

01

Fast Job Postings Analyzer

  • ▶ Integrated Gemini and Jina APIs to analyze job postings, utilizing Cloudflare KV with SHA-256 hashing to cache responses and reduce API costs.
  • ▶ Enforced dual-layer IP rate-limiting (KV + localStorage). Developed a concurrency control queue to cap outbound third-party API requests to 3 concurrent calls.
  • ▶ Designed an automated KeyRotator for Gemini API keys with cooldown fallbacks to maintain high availability. Prevented SSRF by filtering loopback and private IP ranges at the gateway.
PROJECT 02

GeoScout

02

AI-powered Relocation Agent

  • ▶ Re-engineered the backend & frontend onto TanStack Start and React 19, enabling fast server-side rendering and edge deployment via Cloudflare Pages.
  • ▶ Designed a dual-layer defense architecture featuring fuzzy city name normalization with 24h LRU report caching for instant responses alongside a rolling window IP rate limiter.
  • ▶ Achieved 100/100 Lighthouse scores across Accessibility and SEO with strict validation and zero-layout-shift UI polish.
PROJECT 03

WordPopup

03

Cross-browser Userscript Engine

  • ▶ Engineered a cross-browser userscript with advanced DOM traversal and color detection algorithms.
  • ▶ Implemented intelligent adaptive theming system that dynamically detects and matches website color schemes with semi-transparent overlay handling and fallback chains.
  • ▶ Optimized performance through strategic debouncing, word caching, and DOM reuse patterns while integrating a free API, resulting in minimal performance impact.
PROJECT 04

MindEase

04

Bachelor's Degree Academic Work

  • ▶ Used Next.js for server-side rendering and React for building user interfaces, ensuring a seamless and responsive user experience.
  • ▶ Utilized shadcn/ui for styling components, achieving a visually appealing and consistent design across different devices and browsers.
  • ▶ Conducted end-to-end testing using Playwright, significantly improving application stability and minimizing user-reported issues.
03 // 履歴データ

CareerBackground

Web Design Intern

2025.03 - 2025.05
PT Malaka Teknologi Indonesia
  • > Built web pages from Figma prototypes, ensuring a seamless user experience.
  • > Designed and built a complete landing page for the company, adding key sections like pricing tables and testimonials.
  • > Redesigned a government site homepage for easier public access to key information.

B.Software Engineering

2021.09 - 2025.08
Telkom University
GPA: 3.89/4.00

Full-stack Cert

2023.08 - 2023.12
MSIB x LearningX | Ranked Top 5 of 180
04 // 技術リスト

TechStack

Frontend

01
  • CoreTypeScript, React, Svelte
  • StylingTailwind CSS, shadcn/ui
  • FrameworksTanStack Start, Astro, Vite+ SPA
  • Icons & MotionReicon, Motion, GSAP

Backend

02
  • Runtime & APIBun, Hono, Mastra AI
  • API StandardsREST, GraphQL
  • State & QueryTanStack Query, @xstate/store
  • TestingVitest, Playwright

Infrastructure

03
  • Database & ORMTurso, Cloudflare KV / D1, Neon, pgvector, Qdrant, Drizzle ORM
  • Edge & StorageCloudflare Workers / R2 / Queues
  • AlternativeAWS S3, Trigger.dev

Other Tools

04
  • Auth & ObservabilityZod, Resend, better-auth, Axiom
  • Forms & SchedulingTanStack Form / Pacer
  • Design & WorkspaceFigma, Balsamiq, omp.sh
  • DevOps & CLILinux, Git, Bash, Docker, GitHub Actions