Senior Frontend Engineer / Architect · Mobile & Web — Jakarta, Indonesia

Billy RizkyJuristra

Open to opportunities

Profile

Senior Frontend Engineer / Architect· Mobile & Web

EST: 2014
EXPERIENCE: 9+ YRS
SHIPPED PROJECTS: 14++
LANG: ID / EN

About

I design and ship fast, resilient digital products — from telecom-scale mobile apps to event-driven IoT serialization systems — turning complex requirements into clean, shippable interfaces.

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Emailbill.billy.br@gmail.com Phone0838-6568-1110 LinkedInin/billy-rizky-juristra GitHub@bangbilly82

About

A front-end engineer who designs systems like an architect — 9+ years turning ambiguous requirements into products people rely on every day.

I specialize in mobile and web front-end on the React ecosystem, with a full-stack reach that lets me own a feature from system design through deployment. My recent focus is event-driven architecture — most notably a BPOM Data Matrix compliance machine that coordinates hardware, middleware and web in real time.

From telecom-scale platforms like MyTelkomsel to early-stage startups, I bring the same discipline: deliberate architecture, honest trade-offs and clear communication — plus a good sense of humor in the room.

System Design

Event-driven · State · Data flow

Mobile & Web

React Native · Next.js · React

Hardware-adjacent

IoT · Raspberry Pi · Serialization

Scale

Telkomsel to early-stage startups

Experience

10 roles · Jakarta & Surakarta

2014 — Present · Full-time, freelance & internship

01
Period
Nov 2024 — Present
Location
Jakarta, ID
Engagement
Full Time
Senior Front End Engineer
PT. Techtonic ID
Front-end, mobile and IoT architect driving the technical direction of the company's product portfolio — from hardware-adjacent serialization systems to consumer mobile apps and e-commerce.
- Architected and delivered an event-driven Track & Trace serialization and aggregation coding machine for BPOM Data Matrix compliance — designing a single resilient pipeline across Next.js, Golang middleware, Node.js services and Raspberry Pi hardware.
- Defined the front-end architecture for Shoda, a Middle East e-commerce application spanning React Native, Next.js and Laravel, balancing storefront performance with transactional reliability.
- Designed 20FIT's booking, event and operations platform — gym & class booking, run-event management and a daily operations dashboard — establishing shared architectural patterns across web and mobile.
- Led delivery of the official Seolmi and Techtonic ID corporate websites, from system design through launch.
02
Period
Nov 2021 — Nov 2024
Location
Jakarta, ID
Engagement
Full Time
Senior Front End Engineer
PT. Indonesia Bisa Ekspor
Owned front-end architecture for an export-driven product ecosystem — mobile products, web portals and internal tooling — establishing patterns that scaled across four products.
- Designed and built Bisa Ekspor from the ground up with React Native, architecting a codebase shipped to both iOS and Android.
- Defined the architecture for bisaekspor.com and webekspor.com on Next.js with Redux, including security-conscious authentication and payment modules.
- Architected BisaTrade, an export commodity portal, with a defense-in-depth authentication layer and a modular Redux state design.
- Architected the admin panel on GatsbyJS, Redux and styled-components, enabling operations teams to manage product data at scale.
- Delivered Produk Ekspor and Untuk Kamu on React Native on a reusable, maintainable front-end foundation.
03
Period
Jun 2021 — Jan 2022
Location
Jakarta, ID
Engagement
Freelance
Senior Front End Engineer
Ibunda.id
Architected a communication-first social platform with real-time reliability at its core.
- Designed and built the Ibunda application from scratch on React Native, architecting real-time chat and video call modules as the product's core capability.
04
Period
Dec 2021 — May 2022
Location
Jakarta, ID
Engagement
Freelance
Senior Front End Engineer
Garda Medis
Delivered a medical services application designed around dependable real-time interaction.
- Architected the Garda Medis application from scratch on React Native, including real-time chat and video call modules engineered for reliability.
05
Period
Nov 2021 — Jun 2022
Location
Jakarta, ID
Engagement
Freelance
Senior Front End Engineer
PT. Ternak Uang Nusantara
Shipped a fintech application and its web presence with a security-conscious, consistent front-end.
- Built the Ternakuang application from scratch with React Native, architecting a state model suited to financial workflows.
- Designed the official ternakuang.id website with GatsbyJS, styled-components, Redux and an authentication module.
06
Period
Sep 2019 — Nov 2021
Location
Jakarta, ID
Engagement
Full Time
Senior Front End Engineer
PT. FITCO Indonesia
Owned the front-end across FITCO's digital surface — mobile app, data-heavy dashboards and marketing site.
- Architected the official FITCO application on React Native, establishing patterns later reused across the company's products.
- Designed sales and admin dashboards with React, Redux and Ant Design, distilling complex operational data into a clean, high-density interface.
- Built the official FITCO landing page with GatsbyJS and SCSS, engineered for performance.
07
Period
Aug 2017 — Aug 2019
Location
Jakarta, ID
Engagement
Full Time
Senior IT Consultant — Middleware
PT. PhinCon
Technical lead in the Solution Architect & BA department, delivering mission-critical telco products at national scale.
- Served as Mobile App Tech Lead on a large-scale telecommunication project, steering architecture and delivery for MyTelkomsel.
- Collaborated directly with McKinsey Digital Lab (MDL) and Accenture on architecture and delivery.
- Designed the MyTelkomsel mobile and web architecture on ReactJS, HapiJS, Redux, Webpack, Gulp and Cordova — a codebase serving millions of users.
- Championed agile practices and cross-team knowledge sharing across solution architecture and business analysis.
08
Period
Aug 2016 — Jun 2017
Location
Surakarta, ID
Engagement
Full Time
Front End Developer
Studibrand.inc
Delivered client websites end to end on a modern, headless CMS stack.
- Engineered corporate websites for Solocult.com, Standardplus.co.id, Kedaton8spa.com and Intekunsindo.id.
- Built on a modern JavaScript stack with Contentful CMS, keeping content workflows decoupled from presentation.
09
Period
Jan 2015 — Jun 2016
Location
Surakarta, ID
Engagement
Full Time
Front End Developer
Kadang Koding Indonesia
Early-career role shipping real client products across the full web stack.
- Engineered the official kadangkoding.com website and contributed as Front End Designer on diaryhijaber.com.
- Delivered civilweekuns.com, kerjatepat.com, spacehype.co and dianfikry.com end to end.
- Maintained disciplined source control with Git and Bitbucket across all client work.
10
Period
Aug 2014 — Oct 2014
Location
Jakarta, ID
Engagement
Internship
Intern — Web Developer
PT. Garuda Indonesia
First production software experience in a national airline.
- Built a meeting room booking web application on PHP and MySQL, owning it from requirements through deployment.

Selected Work

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Techtonic IDIoT

Track & Trace Serialization Machine

An event-driven serialization and aggregation coding machine that achieves BPOM Data Matrix compliance on box packaging — orchestrated across hardware, middleware and web at production throughput.

Next.jsGolangNode.jsRaspberry Pi

Read case →

Techtonic IDE-Commerce

Shoda E-Commerce

A complete e-commerce platform tailored to the Middle East market — engineered from storefront to transactional flows for performance and reliability.

React NativeNext.jsLaravel

Read case →

Techtonic IDSaaS