Aidar Khabibullin

Senior Frontend Engineer with 10+ years of experience building and scaling SaaS products across cybersecurity, fintech, and e-commerce. Delivered 8+ production applications, including a $4M+ ARR platform. Expert in React, Next.js (App Router, SSR/RSC), and TypeScript.

Track record of measurable engineering impact: 5× real-time collaboration throughput, 46% faster time-to-interactive, and LLM-powered CI tooling that compressed code review cycles from 2–4 hours to under 5 minutes per PR. Quality-focused: 96% test coverage and E2E testing with Playwright. Experienced in cross-platform architecture, monorepo design, and mentoring engineering teams toward autonomous delivery. Open to remote Senior Frontend roles in SaaS, cybersecurity, healthtech, and EdTech.

Senior Frontend Developer at ShelterZoom (2021-04 – 2026-04)

Cybersecurity / Document Intelligence SaaS · Remote (New York, United States) · 51–200 employees

• Built an LLM-powered code review assistant (Anthropic API embedded in GitHub Actions CI) that automated TypeScript interface validation and linting across the full monorepo — compressed the automated feedback cycle from 2–4 hours of manual review to under 5 minutes per PR.
• Optimized real-time collaboration performance on large enterprise documents via rendering virtualization and WebSocket state synchronization — achieved a 5x throughput improvement and eliminated latency issues reported by enterprise clients.
• Designed and led migration of the frontend codebase to Turborepo monorepo architecture, consolidating web and mobile under shared packages and unified TypeScript types — accelerated feature delivery by 1.5x and established a weekly release cadence.
• Delivered a native e-signature system and rich-text editor with full support for complex document formats, coordinating across product, design, and backend — removed dependency on external document tools for enterprise clients.
• Engineered a browser extension for Gmail and Outlook enabling in-context smart contract creation — increased content inflow by 25%.
• Mentored a team of 5 frontend engineers: established code review standards, release processes, and technical onboarding — reduced engineer onboarding time by 40%; one engineer was promoted to senior within 12 months.
• Reduced page load times by 35% through targeted performance audits across Next.js applications, addressing bundle size, rendering bottlenecks, and asset loading priorities.

Senior Frontend Developer at Sberbank (SberVmeste platform) (2020-01 – 2021-04)

Fintech · Remote (Moscow, Russia) · 51–200 employees

• Delivered the SberVmeste banking application, including a donation calculator that drove a 25% increase in first-time donors.
• Architected the frontend application structure and CI pipeline for a new product line — reduced engineer onboarding time by 40% and enabled a weekly release cadence.
• Migrated legacy frontend from Angular to React — refactored 100+ components with zero production downtime.
• Mentored 3 mid-level engineers in React architecture and best practices — accelerated their code review velocity by 2×; one was promoted to senior within 12 months.
• Developed an internal payment system and integrated it directly into client dashboards, unifying payment workflows into a single interface.

Middle Frontend Developer at OpenText Cloudally Backup (2018-02 – 2020-01)

Cybersecurity / SaaS · Ontario, Canada · 11–50 employees

• Migrated frontend to React 16 with server-side rendering (SSR) — reduced time-to-interactive by 46% and improved organic SEO traffic by 32%.
• Built an interactive admin panel with automated content analysis, eliminating manual content management steps for platform administrators.
• Optimized the build pipeline with Rollup — reduced bundle size by 31% and accelerated development builds by 2.7×.
• Implemented feature-based module architecture — increased feature development speed by 1.5× through clear module boundaries and reduced code coupling.
• Integrated a suite of Salesforce products — improved client onboarding and increased customer acquisition by 32%.

Middle Frontend Developer at LLC Runtime (2016-10 – 2018-02)

E-commerce · Moscow, Russia · 11–50 employees

• Optimized React applications via code splitting, lazy loading, and asset prioritization — reduced LCP/TTI by 46%.
• Established unit testing practices using React Testing Library, achieving 96% code coverage and shortening QA cycles.
• Refactored feature modules and introduced feature flags — accelerated new feature rollouts while reducing deployment risk across production.
• Optimized product listing and checkout flow interfaces — improved conversion metrics by 33%.

Master's Degree in Information Security and Computer Technologies – Kazan National Research Technical University named after A. N. Tupolev - KAI (2008-09 – 2014-05)