00 / Boris Borsuk

Senior Frontend
Engineer & Tech Lead

Engineer who starts with the business problem, not the ticket. A decade in React and TypeScript; led full cross-functional teams; partnered with founders and C-level on what’s worth building.

Selected WorkGet in touch
01
Selected Work

Five projects, five outcomes.

Featured caseArchitect

Cross-Framework Video Engine

8 repos · React + Vue

Framework-agnostic video playback engine in TypeScript — class-based, event-driven, plumbed straight into HLS (and FFmpeg for tooling). Plus a shared UI/utils package; both consumed across 8 repos in React and Vue.

TypeScript · HLS / hls.js · FFmpeg · React · Vue.js · Private npm

  1. 02

    Lazy Video Loading + A/B Preload

    Lazy video loading on a video-heavy product. A/B-tested preload strategies end-to-end on ClickHouse + Grafana — winning variant was better for users and cheaper to run.

    TypeScript · HLS / hls.js · Feature flags · ClickHouse · Grafana

    TTI 80s → 9s · +12% completion · -20% infraSenior FE
  2. 03

    AI UI-Asset Platform

    Next.js + FastAPI service generating UI assets from prompts. Auth, billing, P0 security review and the deploy pipeline behind it.

    Next.js · FastAPI · MongoDB · GitHub Actions

    0 → productionFullstack Engineer
  3. 04

    Dynamic Graph Aggregation

    Graph visualisation collapsing under 10k nodes. Hierarchical aggregation, level-of-detail rendering, async layout.

    React · D3 · Apollo GraphQL

    10k nodes · 3× fasterFE
  4. 05

    Game Greed — MVP to funded

    Took a web3 game prototype to a shippable MVP that closed a seed round. Whole frontend, infra, and a slice of the backend.

    React · Node / Express · MongoDB · Recharts · SWR

    $500k seed raisedFounding Engineer
05 / 05End of section
02
About

Briefly.

I treat architecture as the product and product thinking as part of the job. A decade in React and TypeScript — hands-on with engines, design systems, and the layer between the UI and the network. I write the code; I also push back on the spec when the problem behind it isn’t clear.

Led full cross-functional teams, mentored ~100, took MVPs from 0 → 1 and shipped platforms serving hundreds of thousands. The last couple of years have been video-heavy streaming — engines, lazy loading, A/B-tested infra — but the through-line is the same: understand the real problem, then solve it end-to-end.

Currently open to senior IC / staff / tech-lead frontend and full-stack roles in product-led teams that ship.

03
Skills

⌀ 29 entries

Frontend

TypeScript · React · Next.js · Vue.js · Redux / Zustand · Three.js · WebGL · HLS / hls.js · Storybook · Design systems

Backend

Node.js · FastAPI · Postgres · MongoDB · GraphQL · WebSockets · REST design

Infra

AWS · GitLab CI · Docker · GitHub Actions · Cloudflare · Sentry

Practices

Architecture reviews · Mentorship · Performance budgets · Accessibility · Hiring · 100+ interviews · Tech-lead rituals

04
Contact

Let’s talk.

Open to senior IC, staff, or tech-lead roles.