AI PRODUCT ENGINEERING
AI features wired into real products — Gemini vision and search grounding, OpenAI, AI product videos and avatar hosts, voice interfaces and OpenClaw agent workflows.
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Available for remote contract & part-time · 20–40 hrs/week
NEMU · chat-first discovery
I build AI-native products, marketplaces that scale, design systems and Flutter apps.
Senior full-stack & AI product engineer. CTO at NEMU — 6+ years shipping production web and mobile products, 9+ in engineering.
- 9+years in engineering
- ~50%better Core Web Vitals
- 40%faster delivery with design systems
- 70%test coverage
Shipped with teams at
- NEMU
- Bukumed
- Kick Avenue
- LKPP
- Tribe Fintech
- Moladin
- GovTech Edu
- Toyota
About(01)
Download résumé (PDF)I'm Krisna — an engineer who takes AI products from idea to production, end to end.
I'm a senior full-stack engineer and the CTO of NEMU, an Indonesian social commerce platform. I've spent 6+ years shipping production web and mobile products — 9+ years in engineering, starting with industrial IoT at Toyota — across e-commerce, fintech, healthcare and government procurement. I've worked remotely with a Singapore-based team, led small developer teams and shipped contract work alongside full-time roles.
At NEMU I architected a 100+ module NestJS backend, 8 React web apps and a Flutter app, with live shopping, AI features and in-app games ahead of public launch. I care about measurable frontend impact — ~50% better Core Web Vitals, 40% faster delivery through design systems and 70% test coverage. I also mentor, judge and evaluate final projects at Coding.id and RevoU, alongside mentoring at Dibimbing and Bangkit Academy.
How can I help you ship?
Remote · UTC+7 · contract or part-time, 20–40 hrs/week
Selected work(04)
View all projects
CTO · AI, social commerce · 2026
NEMU — AI-powered social commerce
A 100+ module NestJS platform with 8 React web apps and a Flutter app, spanning marketplace, live shopping, AI features and in-app games.
View case study
Bukumed · AI agents · 2025
AI virtual assistant on OpenClaw
Automates conversational workflows and routine tasks for enterprise customers.
View case study
Bukumed · Voice AI · 2025
Browser voice assistant
Real-time, hands-free natural-language interaction in the browser, with the Web Speech API and OpenAI GPT-4o mini.
View case study
Kick Avenue · Web performance · 2024
Kick Avenue marketplace
Led the redesign of the sneakers, streetwear and luxury marketplace: ~50% better Core Web Vitals, and a Storybook design system that made delivery 40% faster.
View case studyExperience(09)
Sep 2017 · ToyotaNow · NEMU
Hands-on technical lead for an Indonesian social commerce platform spanning marketplace, food ordering, live shopping and games. Architected the platform end to end and authored ~70% of 8,000+ commits since June 2026.
- Grew a NestJS monolith from 7 merged legacy services to 100+ modules, with PostgreSQL, Redis/BullMQ, Elasticsearch, a 100% coverage gate and health-checked AWS deploys.
- Built 8 React 19 web apps in a Turborepo monorepo and a Flutter app shipped through iOS TestFlight, sharing one design system and an OpenAPI-generated client.
- Built live shopping with OvenMediaEngine, WebRTC/RTMP ingest and LL-HLS playback, an AI avatar host that answers viewer comments, and an AI-moderated short-video feed ahead of public launch.
- Designed XP, levels, daily missions and a reconciled coin ledger, plus three in-app games including a three.js 3D racing game, with server-side simulation and staged rollout.
- Shipped Gemini and OpenAI features for chat-first discovery, photo-to-listing autofill, AI product videos and a vehicle price estimator with a pre-signup preview.
- Built realtime chat with WebSockets and Redis pub/sub, QR dine-in ordering with restaurant POS, Midtrans and DOKU payments with idempotent checkout, and on-prem KYC face matching.
Built an AI virtual assistant on OpenClaw for enterprise customers and a real-time browser voice assistant (Web Speech API + GPT-4o mini); architected a shared design system and frontend dashboard across concurrent client projects; led monorepo adoption and testing to 70% coverage; connected Claude with Linear/Jira, Figma and the codebase for ticket-to-code traceability.
Led the redesign of the sneakers, streetwear and luxury marketplace (Next.js, React, Blazor); Storybook design system shared across web and mobile (40% faster delivery); ~50% better Core Web Vitals and page load; led the Flutter iOS and Android apps.
Developed the national e-procurement marketplace for LKPP, Indonesia's National Public Procurement Agency, with Next.js, React and GraphQL. Delivered a stack migration and UI/UX overhaul that improved system performance and user engagement, working with public-sector stakeholders on accessibility standards and compliance requirements.
React banking apps for low-bandwidth, 3G users in emerging markets; led the Material UI to Tailwind CSS migration and a 30% performance gain; managed two outsourced developers.
Led the overhaul of the automotive marketplace and CRM dashboard (React, .NET); .NET services and APIs; Storybook component library; mentored two frontend developers and led technical SEO to 80% coverage.
Real-time chat with WebSockets, multi-method payments, REST APIs, query optimization and automated testing.
Built IoT inventory tracking, production dashboards and sensor-integrated QA testing modules at Toyota Motor Manufacturing Indonesia.
Programmed PLCs and built machine connectivity and IoT monitoring for predictive maintenance at Toyota Motor Manufacturing Indonesia.
Contract & freelance
Unity.sg
Frontend Developer (Freelance) · Remote — web app for crypto traders with layered security: encryption, identity/auth service, secure admin and upgrade interfaces.
Jun 2022 — Nov 2022GovTech Edu · Kampus Mengajar
Frontend Consultant · Remote — built Kampus Mengajar, part of the Ministry of Education's Kampus Merdeka program, with React and GraphQL.
Nov 2021 — Feb 2022Teaching & mentoring · Since 2021
Dibimbing · Rakamin · Bangkit Academy · Coding.id · RevoU · Ruangguru
Mentor, judge and final project evaluator at Coding.id and RevoU. Mentor at Dibimbing, Subject Matter Expert and judge at Rakamin, and Best Frontend Instructor at Ruangguru (2022).
Instructor for Bangkit Academy cohorts of 30–50 and mentor for its incubation teams, including BahanBaku through its Play Store launch.
Education
BINUS University — Bachelor of Computer Science, 2026 · Toyota Indonesia Academy — Associate Degree in Mechatronics, Robotics & Automation (full scholarship), 2017
Quick enquiry
Got something in mind?
Tell me what you're building. I take on remote contract and part-time work, 20–40 hours a week.
Remote, UTC+7Contract or part-time
krisnafirdaus@gmail.com