Тарас

TARAS SARAKHMAN
Fullstack Developer
Lviv, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | github.com/Sh1n0a22
SUMMARY
Fullstack developer with production experience across fintech, AI, and location-based services - owning features end-to-end from architecture through deployment. Comfortable driving technical decisions independently: stack selection, root-cause debugging, and cross-service architecture (BFF, real-time pipelines, secure auth).
EXPERIENCE
Fullstack Developer - FreelanceApr 2026 - Jul 2026
Lviv, Ukraine
Algorithmic Trading Platform - Next.js, TypeScript, NestJS, PostgreSQL, Redis, Docker, GCP
- Architected and deployed a production-grade algorithmic trading bot executing real-time trades on Binance Futures, streaming market data and routing ML-driven decisions to the exchange API
- Built a WebSocket data pipeline ingesting tick-level market data with dual-layer persistence - Redis for sub-second reads, PostgreSQL for durable historical storage and backfill
- Designed time-windowed candle aggregation logic handling timezone boundaries, missing data, and subscription gaps
- Implemented JWT-based auth with encrypted credential storage, enabling multi-user support with isolated trading permissions
- Built a responsive trading dashboard (Next.js, TypeScript, shadcn/ui) with type-safe end-to-end API contracts between NestJS and the Next.js client, and real-time price polling
- Containerized the backend pipeline with Docker for consistent local and production environments; deployed the frontend to Vercel and backend to GCP
Fullstack Developer - Berko Tech Feb 2026 - Apr 2026
Lviv, Ukraine
Web & Mobile App - Optiqo (Cleaning Ops Platform) - React, Capacitor, Java (Android), Swift (iOS), Supabase Edge Functions
- Maintained a single React codebase compiled to web and mobile via Capacitor; diagnosed and fixed native-layer bugs in generated Java and Swift code and Capacitor/WebView integration issues
- Implemented NFC card scanning for field asset tracking - reading card data via native APIs and writing operation results back to the card in real time
- Architected Supabase Edge Functions (TypeScript + Postgres triggers) for real-time push notifications, eliminating polling; coordinated TestFlight and Play Store releases including code signing and staged rollouts
- Reduced manual dispatch time by ~30% through mobile-first task assignment and card-based asset verification
Frontend Developer (Agency Contractor) - Appexoft. Sep 2024 - Feb 2026
Lviv, Ukraine - embedded as contract frontend developer across 4 concurrent client engagements, 2-4 months each
Tax Management Platform - React (TS), TypeScript, Tailwind
- Implemented cursor-based client-side pagination, cutting initial DOM payload and enabling smooth scrolling on resource-constrained mobile/tablet devices
- Resolved a cross-browser loading bug affecting Safari and mobile devices, caused by a feature-detection check against an unsupported browser API; eliminated the faulty guard to ensure consistent load behavior across platforms
- Ensured pixel-perfect rendering across iOS Safari, Chrome, and Firefox; hit sub-3s LCP on 3G via lazy-loading and progressive enhancement
Crypto Trading Platform - Next.js, JavaScript, Tailwind
- Diagnosed and fixed race conditions in real-time price feed subscriptions that were causing stale data renders
- Modernized callback-heavy legacy code to Promise-based patterns with centralized error handling; shipped feature-flagged rollouts in partnership with backend and product
Tax & Accounting AI Copilot (MVP) - React, TypeScript, Tailwind CSS
- Proposed the React/TypeScript/Tailwind stack and built a modular component architecture (Context + custom hooks) for the frontend, designed to scale across feature teams
- Built a regex-based markdown transpiler converting unstructured LLM output into interactive UI (collapsible sections, syntax-highlighted code, embedded forms), handling malformed markdown and partial token streaming
- Implemented client-side encryption for sensitive tax documents and resumable upload middleware for large file transfers
Restaurant CRM System - Next.js, TypeScript, Tailwind CSS, shadcn/ui, Preline, Netlify
- Designed a reusable component library (dashboards, CRUD forms, tables, filters) enabling rapid, consistent feature delivery
- Built a BFF layer aggregating multiple backend services into unified endpoints, masking service boundaries and centralizing auth, rate-limiting, and error handling
- Implemented optimistic updates, Zod schema validation, and offline mode with retry logic and exponential backoff for resilient UX
- Configured build pipeline and environment variables to deploy the CRM to Netlify for production release
EDUCATION
B.S. in Software Engineering - Lviv Polytechnic National University 2024 - 2028
SKILLS
Languages: JavaScript, TypeScript, SQL
Frontend: React, Next.js, Redux (RTK Query), Zustand, Tailwind, shadcn/ui, MaterialUI
Backend: Node.js, NestJS, Express, REST APIs, WebSockets, JWT Auth, Supabase
Data: PostgreSQL, Redis, NoSQL
Languages spoken: Ukrainian (Native), English (Fluent)