Mar2026
State machines beat a pile of booleans
What moving a 50k-user app's flows to XState actually fixed, and the three places it was overkill.
ShashiGyawali
Role
Stack
Based
Status
I build the parts of the product that have to work: hiring platforms, payment flows, dashboards carrying tens of thousands of people.
Start a projectWorked withSkill UpData Science InstituteFlashParkingScholarsspacePurchasedMunal ITSweven
Toptal verified expert since 2022What I'm hired for
Build it
Product engineering, end to end
From data model to deployed UI. React and Node, typed all the way through, tested where it counts.
Fix it
Rescue and performance work
Slow front ends, failing payments, downtime, a codebase nobody wants to touch. I've done all four.
Scale it
Multi-tenant and AI features
One deployment serving many customers, roles and permissions, and LLM features that behave in production.
Selected work
Six case studies01 / Data Science Institute
Python exams that run in the browser
An accredited data science certification platform with proctored coding exams, each student in an isolated container.0 installsPython runs in the browserRead case study →02 / Skill UpA skill-tournament platform, built solo
Skill-based mobile tournaments with prizes. I was the only engineer: game engine, anti-cheat, payments, tournaments, iOS and Android.60 FPSGameplay on deviceRead case study →03 / Hiring platformJob matching for hourly hiring
An AI hiring platform for hourly work. I rebuilt how it scores schedule fit, then made a bad fit turn into ranked nearby jobs or an automatic offer.~200%Faster hiring processRead case study →04 / Australian Pharmacist CPD / 2026
From AI prototype to production
A founder built 80% of a regulated CPD platform with AI tools. I made it something you could safely take payments and personal data through.1 → 604,700-line file to layered modulesRead case study →05 / Shopalong / PurchasedShopper research, measured end to end
Purchased's shopper-research platform. I built the participant web app from its first commit, and realistic search pages that send every view and click back to the study.1 callDraws a whole results pageRead case study →06 / Local government / 2021–22Public exam result system
Result processing and publishing for schools across many municipalities, rebuilt as one multi-tenant platform.1→NTenants per deploymentRead case study →About
I'm a self-taught full-stack engineer from Tilottama, Nepal. I started writing JavaScript in 2018 to make a jewellery shop's stock stop living in a notebook.
Since then I've built software for schools, electricity boards, restaurants, marketplaces, hiring platforms. Most of my work is the load-bearing middle: the data model that has to be right, the state machine nobody sees, the payment path that can't drop a transaction.
I've led small teams, reviewed a lot of other people's code, and learned that clarity ships faster than cleverness. I work remotely with teams anywhere, mostly overlapping European and US mornings.
Education
Certification
Languages
Based
Availability
Experience
2026 – now
Australian Pharmacist CPD
Full-stack Developer
Took a security-critical CPD platform, 80% built by a non-technical founder with AI tools, from prototype to production as sole engineer.
2025 – 2026
Skill Up
Full-stack JavaScript Developer
Sole engineer on a skill-tournament platform with prizes: a 60 FPS React Native game engine, server-authoritative anti-cheat, Stripe and Apple IAP, concurrency-safe tournaments.
2025 – 2026
Data Science Institute
Full-stack Lead Engineer
Sole engineer on an accredited data science certification platform. Proctored in-browser Python exams on JupyterHub, one isolated container per student.
2022 – 2026
Purchased
Front-end Developer
Market research app in Next.js: component library from scratch, custom internationalisation, responsive across everything.
2023 – 2025
Virtuosway
Software Engineer II
AI hiring platform: schedule-fit job matching, automatic offers safe to run unattended, and a dashboard cut from over a minute to under a second.
2024
FlashParking, Inc.
Front-end Engineer
EV charging and parking operator UI; found and fixed the payment failure that was halving transaction success.
2021 – 2024
Scholarsspace
Full-stack Developer
Learning network with 50,000+ users. Cut downtime 70%, moved complex flows to XState, reduced infrastructure spend.
2021 – 2022
Munal IT
Full-stack Developer · Tech Lead
Government result processing platform and a consulting CRM. Multi-tenant architecture, dynamic RBAC, code review.
2019 – 2022
Sweven Incorporate
Full-stack Developer
Restaurant management suite: admin, customer, waiter and kitchen apps. Managed a small remote team.
2020 – 2021
Simrik Technology
Full-stack Developer
Jewellery store inventory system and a community electricity billing platform for the local authority.
2018 – 2019
Gurash Tech · Epitome Solutions
Front-end Developer
First professional years: invoicing and stock apps, vanilla JS migrated to React, web app shipped as desktop via Electron.
Stack
Just the tools I reach for first.Languages
TypeScript JavaScript SQL GraphQL HTML CSS / Sass
Front end
React Next.js XState Zustand Tailwind Radix shadcn/ui React Native
Back end
Node.js Express Prisma Apollo Hasura Socket.IO REST JWT / OAuth
Data
PostgreSQL MySQL MongoDB Firestore Redis Elasticsearch Supabase
Infra
AWS GCP Azure Vercel Docker CircleCI Netlify Monorepos
Quality
Jest Cypress E2E testing React Testing Library WCAG 2 Perf profiling
AI in the stack
OpenAI API LLM agents Azure Speech Retrieval search Claude Cursor
Ways of working
Figma to React Design systems Code review Tech leadership Multi-tenant design
Shipped in a case study
Notes
Jan2026
Holding 100% coverage without hating your life
Coverage is a bad goal and a useful constraint. How I kept it on a production app for two years.
Nov2025
Designing around a model that gets it wrong
Speech-to-text was 85% accurate. The product needed to feel 100%. Notes on building the gap into the UX.
Available for new work
Got something that needs building properly?
Tell me the problem, the constraint and the deadline. I'll tell you honestly whether I'm the right person, and if I'm not, I probably know who is.
Shashi Gyawali / full-stack engineerTilottama, Nepal / UTC+5:45