Freelancers using Node.js in KutabumiFreelancers using Node.js in Kutabumi
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Kelvin Desman's avatar
Kelvin Desman
Jakarta, Indonesia
Mind of an engineer and the heart of an entrepreneur.
$50k+
Earned
1x
Hired
11
Followers
Mind of an engineer and the heart of an entrepreneur.
Cover image for lokerdollar.com (http://lokerdollar.com) — Remote Job
lokerdollar.com (http://lokerdollar.com) — Remote Job Aggregator for Indonesian Talent • Architected on Next.js 15 (App Router, RSC), TypeScript, Cloudflare Workers, D1, R2, and KV — zero-runtime-latency SEO pages powered by an ahead-of-time AI enrichment pipeline • Designed a freemium monetization model (Guest / Free / Open Profile / Pro), Talent Visibility opt-in and a B2B employer discovery product • Built an autonomous CI/CD repair pipeline using GitHub Actions + anthropics/claude-code-action@beta that detects pipeline failures and pushes fixes to PRs without manual intervention • Runs a PostHog A/B testing loop on the hero section and conversion funnel; full observability via Sentry and Cloudflare Worker logs • 100% of planning, implementation, and review flows through Claude Code, Codex, and Antigravity — spec-driven, agentic, and reproducible
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Cover image for The LokerDollar.com web up to
The LokerDollar.com web up to 85% faster in some cities — by moving our code farther from users. Sounds backwards. Here's why it worked. 1. The edge promise is seductive: run your code in 300+ cities, and it's milliseconds from every user. Newark, Sydney, São Paulo — all local. 2. Your code doesn't work alone. It talks to a database. And that database lives in one place. A single page render can mean 6+ sequential trips to it. 3. Put your compute "at the edge," and each of those trips crosses an ocean and comes back. The edge didn't remove the distance. It multiplied it. That's how a Sydney request quietly turned into seconds of pure waiting. The fix was one line of config Cloudflare smart placement stopped stop pinning our code next to the user, and run it next to the database instead. One long trip to reach compute, then all the DB chatter is local and nearly free. The result, measured on our own traffic (P90 — the slowest 1 in 10 requests): • Newark ↓ 85% • Sydney ↓ 82% • Melbourne ↓ 63% • São Paulo ↓ 60% and …12 cities faster overall The lesson I'm taking with me: Latency isn't about distance to the user. It's the number of long trips on the critical path. Put compute where it talks the most — for data-heavy apps, that's your database, not the edge. #WebPerformance #EdgeComputing #Cloudflare #BuildInPublic #SoftwareEngineering
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Cover image for Excited to share that Lokerdollar
Excited to share that Lokerdollar has been accepted into the Cloudflare for Startups program. Grateful for the chance to build something impactful. But the bigger story is what we're building. The world of recruiting and hiring is changing fast. In Indonesia alone, millions of people are losing their jobs — economic headwinds, the tech winter, and more. The core problem is a widening gap between industry and talent. That's why we're building an AI career operating system — an AI that acts as a trusted second brain for landing jobs, improving careers, and handling the manual work. Our platform curates jobs based on your interests and expertise, identifies which roles actually increase your chance of getting hired, and automatically fills out applications so you don't burn hours on paperwork and follow-ups. We're also building trust into the system. Sometimes AI screening flags too aggressively and rejects good candidates before a human ever reviews them. Our system catches this — because AI shouldn't be rejecting people. It should be helping them. We're starting in Indonesia, but the opportunity extends far beyond a single country. South Korea, Taiwan, Germany, Italy, the United Kingdom, and the United States are all facing aging populations and shrinking workforces — and they need new ways to connect with talent. Cloudflare has been instrumental in helping us move from concept to a working product in operation. But our vision is much larger than a curated remote job board. We believe every job seeker should have an AI hiring copilot, get continuous improvement between interviews, and that every company should have greater visibility into how they hire. The future of hiring isn't about replacing humans. It's about giving job seekers superpowers. If you're a job seeker, a recruiter, a fellow startup builder, an investor, or someone passionate about the future of hiring and recruitment — I'd love to connect. #FutureOfWork #CloudflareForStartups #BuildInPublic #CareerTech #StartupIndonesia
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Cover image for I didn't believe the TypeScript
I didn't believe the TypeScript 7 speed claims. So I benchmarked it on my own production app — not a toy repo. 1,358 source files. 260K+ lines. The live codebase behind lokerdollar.com (http://lokerdollar.com). One change: tsc → tsgo (TS7, rewritten in Go). Same tsconfig, same tree, --noEmit. Cold type-check: 77.1s → 11.6s. 6.6× faster. −85% wall-clock. Then the part most "10× faster" posts skip — I checked whether it still catches bugs. Seeded 4 classic type errors. Byte-identical diagnostics: same codes, same line and column. The speed isn't bought by missing errors. But I'm not putting it in your CI yet — and here's the honest reason: — It's a release candidate — The native binary drops the JS typescript API, so typescript-eslint type-aware rules, ts-morph, ts-node and ts-jest break — Custom transformers and incremental builds are still maturing My call: run it now as a fast local / pre-PR check, and keep tsc as the authoritative CI gate until 7.0 ships stable. You get a 6.6× tighter local loop with zero risk to the pipeline. The ~$190/year in saved runner minutes is rounding error. The real return is nobody waiting on a turtle. #TypeScript #DevTools #WebDev
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Node.js(1)
Aditya Wirya's avatar
Aditya Wirya
Jakarta, Indonesia
Innovative Engineer, Striving for Excellence
Innovative Engineer, Striving for Excellence
Cover image for Wedding Invitation Platform
Wedding Invitation Platform
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96
Cover image for Event & Ticket System
Event & Ticket System
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10
Cover image for System Information Clinic
System Information Clinic
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10
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Node.js(1)
Mavrick Duchamp's avatar
Mavrick Duchamp
Jakarta, Indonesia
Building easy-to-use websites
Building easy-to-use websites
Cover image for ENGIE Solutions
ENGIE Solutions
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Cover image for Simplon.co
Simplon.co
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Cover image for Monprestatairelogistique
Monprestatairelogistique
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5
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Node.js(1)
Ridho Satriawan's avatar
Ridho Satriawan
South Jakarta, Indonesia
Building modern, responsive websites from front to back.
Building modern, responsive websites from front to back.
Cover image for Jendela Education Website Development
Jendela Education Website Development
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Cover image for BRM Agro Company Website Development
BRM Agro Company Website Development
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Cover image for Travel Agent Bay Frontend Slicing
Travel Agent Bay Frontend Slicing
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5
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Node.js(2)
Septian A. Tama's avatar
Septian A. Tama
Jakarta, Indonesia
7+ years building optimized web products
$5k+
Earned
2x
Hired
2
Followers
7+ years building optimized web products
Cover image for COHIVE's Company Website
COHIVE's Company Website
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Cover image for Quipper Campus
Quipper Campus
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Cover image for COHIVE's Member Dashboard
COHIVE's Member Dashboard
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5
Cover image for COHIVE's Blog
COHIVE's Blog
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Node.js(1)
Naswa Wilantama's avatar
Naswa Wilantama
Kutabumi, Indonesia
Crafting Seamless Web App Experiences
Crafting Seamless Web App Experiences
Cover image for Mili (Personal Finance Tracker) Mili is
Mili (Personal Finance Tracker) Mili is a personal finance management platform built for individuals to track and control their daily cash flow — from logging income and expenses to monitoring budgets across spending categories. It centralizes financial data including transaction history, account balances, budget limits per category, savings targets, and scheduled recurring transactions, with analytics and monthly reporting to give users a clear picture of their financial health.
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Cover image for Bunganona — Flower Shop Website A
Bunganona — Flower Shop Website A clean, elegant website for Bunganona, a homebased florist in Depok & Bogor, Indonesia. Showcases their full product catalog, location details, and a direct WhatsApp order button — designed so potential customers can discover, browse, and place an order in seconds.
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Cover image for Eisenhower Matrix Eisenhower Matrix is a
Eisenhower Matrix Eisenhower Matrix is a task prioritization app built around the Eisenhower Matrix — helping users decide what to work on by organizing tasks across four urgency/importance quadrants. It centralizes personal productivity data including task metadata (due dates, estimated duration, tags), quadrant-based prioritization, daily focus ranking by urgency score, and an integrated Pomodoro timer tied directly to task sessions.
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Cover image for Optical Shop Order Lens Management
Optical Shop Order Lens Management System Optical Shop Order Lens Management System is an order tracking platform built for optical shops to manage lens procurement — from receiving customer prescriptions to placing and monitoring orders with lens vendors. It centralizes lens order data including prescription specs (SPH/CYL/axis/PD), vendor assignments, order status tracking, and financial summaries per order cycle.
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Node.js(1)