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Ramdan Firdaus
Full Stack EngineerPurwakarta, West Java, IndonesiaOpen to remote roles and freelance projects

From storefrontto factory floor.

I'm Ramdan. For ten years I've built the systems businesses run on: marketplaces, merchant tools, warehouse and factory software. React and Next.js in front, Go and PHP behind.

See selected work↓mramdanf@gmail.com

MOHAMAD RAMDAN FIRDAUS

FS

From

Purwakarta, Indonesia

To

Your next product

Contents

1 × Full Stack Engineer. React, Next.js, Go, PHP.

In service since

2016

Handling

Returns early. Keeps functions small.

MRF 2016 FS ID

10+
years shipping web software, since 2016
4
industries: telecom, food delivery, e-commerce, manufacturing
80%
of the Kick Avenue revamp front end built by me
+30%
unit test coverage added to GrabFood CMS
  • React
  • Next.js
  • TypeScript
  • Go
  • PHP
  • Laravel
  • MySQL
  • Redis
  • GraphQL
  • Tailwind CSS
  • Docker
  • CodeIgniter

01Selected work

Software that people rely on to run their day.

Also shipped

  • Kick Avenue operational portalOne stop portal for buying, selling and stocking operationsKick Avenue
  • Grab developer portalWhere external partners integrate with Grab servicesGrab
  • Grab store frontMerchant restaurant websites with cart, payment and orderingGrab
  • Mangoesky customer portalSatellite internet subscriptions: quota, usage, paymentsTelkomsat
  • Management approval systemFunding, overtime and leave approvals in Vue and CodeIgniterTelkomsat
  • Network monitoring appAndroid app with real time alerts for operations staffTelkomsat

02Approach

Simple rules, applied stubbornly.

  1. 01

    Return early, keep it small

    Early returns and a hard cap on function length, enforced by lint rules. On the Kick Avenue revamp this became the team standard and made bugs easier to find under a tight deadline.

  2. 02

    Protect the invariant

    Stock never goes negative. A lot never skips a stage. I put rules like these in one guarded entry point (a transaction, a row lock, a state machine) instead of hoping every caller remembers.

  3. 03

    Own it end to end

    I'm comfortable taking a feature from the database schema to the last pixel, and from a legacy codebase with no docs to a system the next engineer can actually read.

stock-service.ts
1function recordStock(book, qty) {
2 if (!book) throw new Error("Book not found");
3 if (qty <= 0) throw new Error("Invalid quantity");
4 if (book.stock - qty < 0) throw new Error("Negative stock");
5
6 return save(book, qty);
7}
Guards first, happy path last. Reads top to bottom.

Toggle the tabs. Same behavior, very different reading experience.

03Experience

Ten years, four companies, one habit: ship it and own it.

Oct 2025 → Now

Ayo Indonesia

Senior Software Engineer

Remote

Sports venue booking and community app.

  • Build and maintain core product features across booking, checkout and payment flows.
  • Integrate and support third party services, including payments, so transactions stay reliable end to end.
  • Fix bugs, refactor and tune performance alongside product, design and QA.

Aug 2023 → Oct 2025

Kick Avenue

Full Stack Engineer

Jakarta

Marketplace for authentic sneakers and collectibles.

  • Led the front end of a full system revamp, building about 80% of the user facing components in Next.js and TypeScript.
  • Designed a modular component system shared by the public marketplace and the internal CMS.
  • Built wallet top up and cash out endpoints in Go, integrated with a payment gateway.
  • Kept the legacy Lumen and React platform healthy with little documentation to lean on.

Next.js · TypeScript · Tailwind CSS · Zustand · React Query · Go · Lumen · MySQL

Jun 2019 → Aug 2023

Grab

Full Stack Web Developer

Jakarta

GrabFood merchant and operations tooling.

  • Shipped merchant self service features that cut operations workload and raised partner engagement.
  • Raised unit test coverage on GrabFood CMS by 30%.
  • Built a self management portal for service availability config, backed by Go services, so ops no longer needed engineering.
  • Worked across menu management, the developer portal and merchant store fronts with React, Redux and GraphQL.

React · TypeScript · Redux · GraphQL · Go · Ant Design · Jest

Feb 2016 → Jun 2019

Telkomsat

Full Stack Developer

Bogor

Satellite telecommunications, internal systems and customer portals.

  • Built a management approval system (Vue and CodeIgniter) for funding, overtime and leave requests, replacing manual workflows.
  • Led the front end of the Mangoesky customer portal: quota monitoring, speed tracking and transaction history.
  • Built an electronic reporting and finance system for operational funding and cash flow.
  • Shipped Android apps for customer quota management and for network monitoring with real time alerts.

PHP · CodeIgniter · Vue · jQuery · MySQL · Android (Java)

Toolbox

Front end

Where I've spent the most hours

  • React
  • Next.js
  • TypeScript
  • Redux Toolkit
  • Zustand
  • React Query
  • Tailwind CSS
  • Ant Design
  • GraphQL
  • SCSS / Less

Back end

APIs, business rules and data

  • Go
  • Echo
  • PHP
  • Laravel / Lumen
  • CodeIgniter
  • MySQL
  • Redis
  • REST API
  • AWS SQS
  • MQTT

Tooling

How it gets shipped

  • Docker
  • GitHub Actions
  • Jest
  • PHPUnit
  • Webpack
  • Vite

Working exposure

Used inside existing setups, not owned

  • Kubernetes
  • Terraform
  • ArgoCD
  • Kafka

Education

  • 2016 → 2019IPB UniversityB.Sc. Computer Science
  • 2012 → 2015IPB UniversityDiploma, Computer Engineering

04Contact

Got a system that has to just work?

I enjoy the unglamorous parts: stock ledgers, payment flows, legacy code nobody wants to touch. If that is what you need built or fixed, let's talk.

Purwakarta, West Java, Indonesia