Client work
Four of the eight clients who reviewed me hired me again: FoodRazor, Roley, Microwork, and Connectful's founder, for her next product, Corecircle.
Senior Full-Stack Engineer & Tech Lead · 12 client projects, 2014–now
Highlights
SmartLite
Yumetronics2024–nowFull-stack (web app + backend + infrastructure)
Built solo in 3 months; about 200 lamp poles in production since 2024.
IoT · Real-time · Dashboard · MQTT · WebSockets · Leaflet · AWS · Deno · TypeScript · PostgreSQL · Docker · PWA
FoodRazor
Michael Distel2018–2019Tech LeadLiveHired again
Scaled across 10 countries and hundreds of restaurants; acquired in 2023
“Anton has been outstanding over the last year, helping to guide and advise the development of our application with Firebase.”
— Michael Distel (opens in a new tab) reviewed on Upwork (opens in a new tab) Angular · Node.js · Express.js · GCP · Firebase · Firestore
Corecircle
Nastassia Ponomarenko2021Tech LeadLiveHired again
Scaled to 200K+ users; acquired in 2024
“A few months back, we were having major problems with the code that was implemented by our first back-end developer. … Anton helped us out and solved all of the problems we had.”
— Nastassia Ponomarenko (opens in a new tab) reviewed on Upwork (opens in a new tab) Node.js · Nest.js · Nx monorepo · GCP · Firebase · PostgreSQL · Redis
Truth or Dare (DareChat)
Rustam Zaripov2022Tech Lead & ArchitectLive
~40K monthly active users — live at darechat.me with a Swagger-documented public REST API at darechat.me/api.
Nest.js · Express.js · Nx monorepo · CQRS · Microservices · PostgreSQL · Prisma · Redis · Socket.IO · WebSockets · Swagger · JWT · TypeScript · Firebase · FCM · Google Cloud Vision · Docker
Roley — Make a Movie!
Lila King2023–2025Full-stackHired again
Built the MVP end to end. The client changed course to an offline business just before launch.
“Anton was a terrific partner to me in developing an MVP of a web app I've been dreaming of for ages. … If you're looking for a fast, expert, transparent guide to help you bring a big idea to life, working with Anton is a great choice.”
— Lila King (opens in a new tab) reviewed on Upwork (opens in a new tab) SvelteKit · ffmpeg.wasm · PostgreSQL · AWS S3 · AWS SES · TypeScript · TailwindCSS · Docker · Deno · Fresh
Connectful
Nastassia Ponomarenko2020–2021Tech LeadOffline
Showed fast growth during the COVID-19 pandemic
“He's taken a role in our startup as tech lead and has been doing a beyond excellent job with communication, honesty, hard work and accuracy. … Overall, 12/10 of a developer. I really got lucky with Anton.”
— Nastassia Ponomarenko (opens in a new tab) reviewed on Upwork (opens in a new tab) Node.js · Nest.js · Nx monorepo · GCP · Firebase · Firestore
Archive, 2014–2023
Earlier client work, newest first. 4 of these 6 projects are no longer online.
2023
Sogroya Dose Reminder
Novo NordiskFull-stackLive
A four-step multilingual web app for setting once-weekly Sogroya medication reminders on mobile and desktop calendars.
2018
GoPingu
Peter VisserTeam lead & tech lead (full-stack)Offline
Manage marketing teams via a Trello-like app that utilized a marketplace for project templates.
“He helped us to hire a team and takes care of our every need. His most amazing attribute is how he looks after our money like it is his own.”
— Peter Visser (opens in a new tab) reviewed on Upwork (opens in a new tab) 2017
Code Review & Architecture Audit
Audit and hiring
Code review report for a Node.js REST API codebase.
“Anton is a highly skilled full-stack engineer and consultant. … Anton is organised, communicates constantly, and kept us updated on progress on a daily basis.”
— Reviewed on Upwork (opens in a new tab) 2015–2016
Microwork
Andy GoughTeam lead & tech lead (full-stack)OfflineHired again
Human text classification service freelance platform.
“Anton was leading our development team and has set up an app that is covered in tests, full of quality guidelines and control, he adheres to schedules and communicates brilliantly.”
— Andy Gough (opens in a new tab) reviewed on Upwork (opens in a new tab) 2014
CallTrack
Thomas WusatiukFrontendOffline
Analyze calls data from your call center and manage phone numbers based on various rules. I built the frontend of this call-analytics SaaS in AngularJS: the screens for call data and for managing phone numbers by rules.
“He mainly overtook the frontend dev part of a SaaS solution we have developed. … I was very happy with his mindset (thinking in solutions instead of problems)”
— Thomas Wusatiuk (opens in a new tab) reviewed on Upwork (opens in a new tab) 2014
Sajari
Hamish OgilvyFrontendOffline
Dashboard single-page application for search and recommendations engine as a service. I built the dashboard, a single-page AngularJS app for Sajari's search and recommendations service.
“Anton is an excellent web app developer and developer in general. His communication skills and attentiveness is what sets him apart.”
— Hamish Ogilvy (opens in a new tab) reviewed on Upwork (opens in a new tab) The company: Later renamed Search.io and acquired by Algolia in 2022 (opens in a new tab).
Five-day refund
If in the first five days you feel this is not working, tell me and I refund what you paid.
A small first milestone
We start with one or two weeks of work. If either of us wants to stop at the end of it, we stop — you keep everything built so far.