Denis Zaitsev

Available to hire

js, and SQL and NoSQL databases. I specialize in product-facing engineering, from complex and performance-sensitive interfaces to reusable services, architecture improvements, and polished cross-platform experiences.

About

I’m a Senior Full-Stack Developer who enjoys building thoughtful web and mobile products with TypeScript, React, React Native, Node.js, and SQL and NoSQL databases. I specialize in product-facing engineering, from complex and performance-sensitive interfaces to reusable services, architecture improvements, and polished cross-platform experiences. I’ve worked on AI-powered creative tools, consumer platforms, casino products, search experiences, and public-service portals.

I’m also passionate about helping teams work better. I’ve led frontend teams, mentored developers, improved engineering standards, and helped launch delayed products by turning complex requirements into practical, maintainable solutions. I enjoy collaborating across functions, sharing knowledge through team talks, and exploring AI-assisted development workflows that make research, implementation, and review more effective.

  • 7 years' experience
  • Joined October 2026

Languages

  • RussianFluent
  • EnglishAdvanced
  • Hebrew (modern)Beginner

Industry experience

  • Software & Internet
  • Gaming
  • Media & Entertainment
  • Retail
  • Financial Services

More experts in Jerusalem, Israel

Work experience· 4 roles

Senior Full-Stack Developer · LightricksMar 2025 – Jul 2026 · 1 yr 5 mos

Implemented and optimized Timeline Editor features for sequencing, timing, and editing AI-generated video assets. Delivered Shot Control workflows for frame-level generation steering and timing control in AI video generation. Mentored junior developers and formalized AI-assisted engineering workflows and code standards. Presented talks on code review frameworks, product consistency, LLM drift, hallucinations, and multi-agent development workflows.

Senior Full-Stack Developer · SunflowerJun 2023 – Feb 2025 · 1 yr 9 mos

Contributed to the launch of Crown Coins Casino, helping advance a project delayed by six months. Implemented architectural changes across web and mobile codebases, accelerating feature delivery by 50%. Developed a game recommendation system, designed a reusable payment service using iframe and WebView integrations, improved consistency between web and React Native applications, and added targeted interface animations.

Senior Frontend Web Developer · YandexMay 2021 – Jun 2022 · 1 yr 2 mos

Collaborated with the Yandex Garage team to build Commodity Vertical from scratch and launch it to production within four months. Developed UI components and integrated them into a high-traffic search portal. Implemented an advertising carousel for Commodity Vertical and Yandex Market with a focus on performance and reliability. Ran UX improvement experiments aimed at increasing sales conversion rates.

Senior Full-Stack Developer, Team Lead · TatikomaFeb 2018 – Apr 2021 · 3 yrs 3 mos

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