Your CTO,
without the hire.
I am a technology partner for companies that need senior technical judgment without hiring a full-time CTO. Describe the problem in plain words, and I will take it from there. Independently, or through Sulptra, the practice I founded.
Lee Qixian · Technology partner and fractional CTO
Selected work
Open a project for the details. Earlier projects are listed below.
01Financial technologyTetrix: AI platform for private-market investors$100B+in client assets on the platform2023active
Tetrix reads the reports investment firms receive from the private funds they invest in, turns them into clean data, and lets the firm question its whole portfolio the way it would ask a CFO who knows every number. I have been on the team since before its first funding round.
- Funding
- $5M seed (2024), $15M Series A (2026)
- Funds processed
- 3,000+ a quarter
- Clients in
- US, Canada, Europe and Southeast Asia
My role
Joined at the founding stage as a technical partner to both co-founders, the CEO and the CTO: shaped product and technical decisions, designed and built the first product's front end, and helped hire the engineering team. Now a full-stack engineer across the platform, AI included.
Built with
- React
- Next.js
- TypeScript
- Python
- PostgreSQL
- AWS
02Health & wellnessPersonalised metabolic health program800+participants, 2018 to 20252018—2025delivered
A metabolic health program that shows each participant how the foods they eat affect their own blood glucose, so they can find the foods that suit them. Participants log meals in a mobile app, and the program team runs everything from a web portal.
- Positive feedback
- 95%, post-program survey
- Used by
- Participants and the program team
- Platform
- iOS, Android, web
My role
Owned the technology from 2018 to 2025: architecture, the mobile app and admin portal, reporting and analytics, and ongoing support until the program closed.
Built with
- React Native
- React
- Node.js
- MySQL
- Sequelize
03AgricultureEquipment and workforce management for a farming estate4,000hectares under management at launch2019handed over
One system showing who is working, what equipment the estate has, where it is and what condition it is in, kept up to date by the people in the field. It replaced Excel sheets, paper forms and phone calls.
- Equipment overseen
- $100M+ at launch
- Used by
- Office managers, dispatchers and field crews
My role
Owned it end to end: on-site discovery, system design, build and rollout, then handover to the client's IT team.
Built with
- React
- Node.js
- MySQL
- Sequelize
04Food & beverageShift scheduling across a coffee chain's outlets120+outlets nationwide, rolled out in phases2021handed over
A mobile web app that replaced roster planning over WhatsApp. Managers plan and adjust shifts across outlets, and staff check their shifts, pick up open ones and send requests from their phones.
- Used by
- Outlet managers and staff, full-time and part-time
- Platform
- Mobile web app
My role
Owned the build: architecture, development and testing, working alongside a design firm that led user research and design. Handed over to the client's internal team.
Built with
- React
- Node.js
- MySQL
Earlier work6 delivered and archived2016—2020
Four further consumer apps and design projects, not listed here.2014—2018
Assessment and progress tracking for tuition centres
One platform for tuition centres to assess students and share their progress, with each centre's version carrying its own branding. Teachers and managers work on laptops; parents and students use a mobile app.
- Centres in the trial
- 10+
- Students in the trial
- 500+
- Used by
- Teachers, centre managers, parents and students
- Platform
- iOS, Android, web
My role
Owned it end to end, from architecture through build, then handed it over to the client.
Built with
- React Native
- React
- Node.js
- MySQL
Referral and booking platform for clinics, labs and imaging centres
A web platform where doctors refer patients to labs and imaging centres, book their appointments and talk to the provider over live chat, replacing referrals made by phone.
- Clinics
- 20+
- Service providers
- 3
- Used by
- Doctors, clinic staff and service providers
- Platform
- Web
My role
Designed and built it end to end, then handed it over to the client.
Built with
- React
- Node.js
- MySQL
- Sequelize
Digital manuals and document library for a logistics company
A document library that put training material and manuals on tablets for frontline logistics operators, replacing printed copies that were often lost or damaged. Trainers and back-office staff upload; operators read on their tablets.
- Rollout
- Planned for 2,000+ staff
- Used by
- Trainers, back-office staff and operators
- Platform
- iOS, Android, web
My role
Designed and built it end to end, then handed it over to the client.
Built with
- React
- React Native
- Node.js
- MySQL
MemoryWatch: location safety for people living with dementia
A watch app and caregiver dashboard that let people with dementia move around on their own while their caregivers know they are safe. If the wearer heads the wrong way, the app reminds them and alerts their caregiver.
- Built as
- A school project with start-up potential
- Used by
- People with dementia and their caregivers
- Platform
- Android, web
My role
Led a team of four as the full-stack developer, building the wearer's app, the back end and the caregiver dashboard.
Built with
- React Native
- Node.js
- Android
Dotomni: one API for every messaging channel
A single API that let businesses send and receive messages on WhatsApp, Telegram, Facebook Messenger and SMS through one integration, for customer support, notifications or anything else.
- Channels
- WhatsApp, Telegram, Facebook Messenger, SMS
- Built for
- Companies adding messaging to their own products
- Stage
- Prototype, trialled by a transport company
My role
Co-founder and CTO, alongside a business co-founder. Designed the API and built the platform and its channel integrations.
Built with
- Node.js
- Express
MaiMai: a second-hand marketplace with built-in contracts
A buy-and-sell marketplace where buyer and seller agree terms in the chat, forming a simple contract, and the buyer's payment is held until the deal is done. If something goes wrong, there is a record of what both sides agreed.
- Built as
- A start-up idea and school project
- Trial
- 10+ users, 20+ transactions, within the school
- Market
- Singapore
My role
CTO in a team of five. Designed the contract and payment model and built the platform, including its real-time chat.
Built with
- React
- Meteor
- Node.js
- Stripe
Experience
- Sulptra Pte. Ltd.FounderTechnology partnership practiceCurrent
- LQXIndependent practiceConsulting and delivery2017—
- GoogleBusiness intern, automationAutomation tooling; processing time reduced up to 6000%2017
- Singapore Management UniversityTeaching assistantTwo modules2016—17
- Bank of SingaporeTechnology & strategy internDevOps automation, ELK stack2016
Tell me what is in the way.
If part of your business is slower, harder or more expensive than it should be, describe it in a paragraph. I will tell you whether I can help, and who can if I cannot.
me@leeqixian.com