Teams we've shipped with.
From solo founders to established product teams across Europe, the US, and MENA. A few can be named; a lot can't. The problems rhyme: real products, real users, real deadlines.
Worldwide reach
Teams across 10 cities in 9 countries.
A map of where the work has happened — every dot is a client HQ we've shipped software with.
10Cities
9Countries
10Companies
San FranciscoUnited States
1Abysalto
Senior cross-platform engineer at Abysalto, Zagreb — shipping mobile, web, and desktop products for public administration, transport, utilities, and emergency response.
Working across the stack on EU public-sector and enterprise programs, with a focus on clean architecture and long-term maintainability.
ReactTypeScriptMobileDesktop
Apr 2026 — now
Senior dev
Valtech
Senior Software Developer across multiple cross-platform engagements for international clients — mobile, web, and desktop.
Shipped The Social Hub (iOS, Android, web), ShopAz.com commerce app, OpenTalk.eu conferencing clients, and an internal hot-desking tool. React, React Native, Electron.
React NativeExpoElectronTypeScript
Apr 2025 — Apr 2026
Senior dev
Kin + Carta
After Kin + Carta acquired Melon, the Sofia team continued as a Kin + Carta studio. Same cross-platform remit — mobile, web, desktop — on a wider global client base.
Senior engineering across client engagements from the London-listed tech consultancy's pipeline, until Valtech acquired Kin + Carta in April 2025.
ReactReact NativeTypeScriptMobileDesktop
2023 — Apr 2025
Senior dev
Melon
Senior Software Developer at Melon, the Sofia-based engineering firm. Worked on cross-platform product teams — the same crew later continued under Kin + Carta and then Valtech.
Delivered mobile, web, and desktop features for international clients while the Sofia office kept its local Melon identity.
ReactReact NativeTypeScriptMobileDesktop
Sep 2022 — 2023
Senior dev
Dept
Senior Developer, then Team Lead of 5 plus 12 interns during an internal traineeship.
Led React for Aruba.com (Bloomreach integration), shipped Rabo Graintell at Rabobank (deep links, push, widgets), and delivered a Euro 2020 campaign for Takeaway.com. Planning, code reviews, and technical direction across teams.
ReactReact NativeTypeScript
Nov 2020 — Sep 2022
Senior · Team Lead
Loka
Senior Mobile Developer building WithMe Health — a healthcare app with realtime chat and chatbot integration.
React Native app wired to microservices, with a focus on UI consistency, component testing, and a clean communication layer.
React NativeTypeScript
May 2020 — Nov 2020
Senior dev
Data2Me
Built a dynamic survey module for a medical software platform — a configurable form builder collecting structured health data for clinical use.
Delivered a flexible, reusable UI architecture the team could extend without further frontend work.
ReactTypeScript
Jan 2020 — May 2020
Senior dev
iVote
Senior Software Engineer on Demokra, iVote's flagship Elections Management System — used by governments across multiple countries.
Contributed to voter registration, results processing, and reporting modules in a high-stakes, high-availability environment.
ReactPWATypeScript
Sep 2019 — Jan 2020
Senior engineer
CrazyLabs
Game Developer (junior → senior) across four years on a portfolio of 100+ live mobile games, reaching 4.5B+ downloads worldwide.
Led Monster High™ Beauty Shop, contributed to Hotel Transylvania Adventures, supported the Game Live Ops team on monetization and critical bug work, and mentored junior developers.
UnityC#Mobile games
May 2015 — Sep 2019
Junior → Senior
Game2Be
Junior Game Developer on Next Spin Slots — a slot-machine game published on Facebook and iOS.
Prototyped mini-games, designed three bonus rounds for the second story arc, and originated much of the game design work for bonus content.
UnityC#
Jul 2014 — May 2015
First role
What clients say
"Nikola moves fluently across mobile, web, and backend. The code we inherited is clean, typed, and production-ready — onboarding a new engineer takes hours, not weeks."
Engineering lead · Valtech
Work with us
Scoping a new release?
We take on a handful of client engagements per quarter. Tell us what you need and we will reply with a plan.
