Senior Frontend Developer · Independent contractor
I build fast, accessible frontends for products used by millions.
React, Next.js, React Native and TypeScript, with 7+ years of shipping for The LEGO Group, SITA, RBC Capital Markets and PGL. Remote from Bucharest, working with teams in the UK, the EU and North America.

- 73 marketskids.lego.com, 30 languages incl. RTL
- Millionsof visitors to LEGO Hero Stories in two months
- 65+ airlineson SITA Mission Watch
- 2.7M+peak concurrent viewers, live esports
- Sports EmmyThe International 10 broadcast
Selected work
The LEGO Group
Hero Stories and 3D on kids.lego.com
A new 3D navigation concept for a global kids' platform: built end-to-end, fast on low-end phones and usable by every child.
SITA
From a 3-month MVP to part of Mission Watch
A real-time communication app for airline operations that started as a short contract and became part of SITA's flagship platform.
RBC Capital Markets
Automation and data-heavy dashboards for an enterprise risk platform
Turning a daily manual task into one click, and keeping dozens of live tables and charts responsive.
PGL Esports
Live graphics for esports world championships
Real-time broadcast graphics for audiences of up to 2.7M concurrent viewers, including the Sports Emmy-winning The International 10.
What I can help with
Next.js product engineering
App Router, Server Components, i18n and performance for high-traffic, multi-market products.
3D and interactive web
Three.js and React Three Fiber experiences that stay smooth on low-end phones.
Accessibility and the EU Accessibility Act
WCAG 2.2 AA work that holds up: audits, fixes, and complex UI (even 3D) usable by keyboard and screen reader.
Real-time and data-heavy UIs
Live data, WebSockets and Matrix, RxJS and AG Grid dashboards that stay responsive.
React Native and PWA
Cross-platform apps, from a first MVP to a feature customers pay for.
AI-assisted engineering
Claude Code and MCP workflows with guardrails, so teams ship faster without lowering the bar.
How I work
- End-to-end ownership, from Figma and requirements to tested production code.
- Remote from Bucharest (EET), overlapping EU and UK working hours. On-site visits on request.
- B2B through my own company, Sadovei Software Company, already invoicing EU and UK clients.
- Clients bring me back: LEGO re-engaged me without a re-interview, and SITA extended a 4-month contract after the MVP.
My first two weeks on a new team
Week 1: get productive
Access, codebase walkthrough and a first small change in production, plus a quick baseline of performance and accessibility.
Week 2: first real delivery
A feature or fix that matters to the team, shipped with tests, and a short list of the highest-value improvements I found.
After that: own an area
I take ownership of a feature area end-to-end and work directly with product, design and QA.
Clients and teams: The LEGO Group · SITA · RBC Capital Markets · PGL Esports · ZentaHub
Have a product that needs a senior frontend contractor?
Tell me about the team, the product and the timeline. Recruiters are welcome too: the essentials are below.
- Role
- Senior Frontend Developer: React, Next.js, React Native, TypeScript
- Engagement
- B2B contract through Sadovei Software Company, invoicing EU and UK clients
- Location
- Bucharest, Romania · remote, on-site visits on request
- Time zones
- Full overlap with UK and EU, mornings with the US East Coast
- Languages
- English (C1), Romanian (native)
- CV
- On request, by email or after a short call