Open to Head of Engineering / senior roles & collabs

Phan Trung Kiên.

SOLO FOUNDER · SENIOR SOFTWARE ENGINEER · TECHNICAL LEAD — Ho Chi Minh City, VN

I spent 15 years building high-performance systems for fintech and crypto exchanges — millions of transactions, 99.9% uptime. Now I run a one-person software studio, shipping AI SaaS products end-to-end: idea → code → infra → growth.

15yr
Engineering
20+
Products shipped
99.9%
Exchange uptime
M+
Crypto tx handled
01

About

I'm an engineer who ships. For 15 years I architected the backends that can't go down — a crypto exchange trading engine at Remitano processing millions of transactions through the 2021 bull market, fintech and real-estate platforms at Oivan, migrated from Rails 5 to Rails 7 with zero downtime, and Web3 apps on Solana and RENEC.

Somewhere along the way I realised I didn't just want to build features — I wanted to build whole products. So I became a solo founder: a one-person studio that takes an idea from a blank repo to a live, paying product — writing the code, running the infra, and orchestrating a fleet of AI agents to do the growth. Everything below is real, in production, and shipped by one person.

02

The studio — AI SaaS I've shipped

A portfolio of AI-native SaaS, each taken solo from zero to production — full-stack app, payments, infra, and an autonomous content/growth engine.

AutoShort
autoshort.org
Live

AI faceless short-video generator — script → voice → AI scenes → captions, with a viral-cloning engine and 11 art styles. REST API + auto-posting to TikTok/YouTube.

Next.jsLLMFluxffmpeg
StoryShort
storyshort.app
Live

AI channel automation — set a series once and it generates + auto-publishes short videos on a schedule. Built to out-feature StoryShort.ai at a fraction of the price.

Next.jsSeriesAuto-post
CVPosh
cvposh.com
Live

AI resume & CV builder — turns a rough profile into a recruiter-ready, ATS-friendly CV in minutes, with tailored rewrites per job.

Next.jsLLMPDF
SEOBolt
seobolt.app
Live

AI SEO toolkit — keyword mining, Google Search Console insights, and programmatic content, built for solo founders who can't afford an SEO team.

GSC APIpSEOLLM
AISend
aisend.app
Live

Transactional & cold-email platform with an API — deliverability guardrails, bounce protection, and AI-drafted campaigns for indie makers.

Email APISESNestJS
RemixViral
remixviral
Live

Repurpose long-form video into shorts — AI translation & dubbing across languages, captions, and reframing. Turn one video into a week of content.

WhisperTTSffmpeg
ShowMRR
showmrr.com
Live

Verified-revenue badges for SaaS — connect Stripe / Polar / LemonSqueezy and display only real, time-stamped MRR as social proof.

StripePolarOAuth
Bugsly
bugsly.dev
Live

AI bug tracking & error monitoring — capture, triage and fix production errors, with an MCP server so AI agents fix bugs straight from the stack trace.

MCPClickHouseMonitoring
BetterKids
betterkid.app
Live

AI learning platform for kids — interactive, gamified lessons that adapt to each child, with a native mobile app.

FlutterLLMEdTech
GrowFast
growfast.sh
Live

Solo-founder growth engine — multilingual SEO/GEO, payments, analytics and an MCP server to launch and grow a SaaS end-to-end.

SEO/GEOMCPGrowth
ShipFast
shipfast.sh
Live

The engine behind the studio — a SaaS boilerplate + autonomous growth system (multilingual SEO/GEO, payments, analytics) that lets one person launch a product a week.

BoilerplateMCPGrowth
03

Experience

2020 — Present
Oivan Ruby on Rails Developer → Technical Lead
  • Architected microservices handling large-scale transactions for fintech & real-estate platforms serving millions of users.
  • Migrated a legacy stack from Rails 5 / Ruby 2.3 → Rails 7 / Ruby 3.x with zero downtime.
  • Built Web3 backends on Solana & RENEC and AI content pipelines (LLM + text-to-speech), improving response times ~40%.
2020 — 2023
Remitano Exchange Head of Engineering
  • Architected high-performance crypto trading systems processing millions of transactions with 99.9% uptime.
  • Optimised database performance ~60% and scaled the platform through the 2021 crypto bull market.
  • Shipped security & compliance APIs and the React Native mobile app.
2016 — 2020
Vitalify Asia Full-Stack / Backend Engineer
  • Delivered fintech, e-commerce, booking & gaming apps with 99.9% uptime.
  • Built microservices, authentication flows, background analytics jobs and real-time leaderboards.
2015 — 2018
NUS Technology Backend Engineer
  • Built secure, high-performance APIs for enterprise clients with strict security requirements.
  • Designed caching strategies and scalable backend services for high-load applications.

B.Sc. Computer Science & Engineering — Hanoi University of Science & Technology (2009–2014)

04

Stack

Backend

Ruby on RailsNode.jsNestJSRustGoTypeScriptMicroservicesEvent-driven

Frontend

ReactNext.jsReact NativeTailwindCSS

Data & Infra

PostgreSQLRedisKafkaMongoDBAWSGCPDockerKubernetesCI/CD

Web3 & AI

SolanaRENECSmart contractsLLM pipelinesRAGAI agent orchestration
Let's build

Got a hard problem
worth shipping?

Open to Head-of-Engineering / senior IC roles in fintech & payments, and to collaborations. I bring exchange-grade engineering and a founder's bias for shipping.