Personal information hidden

Vasyl Molnar
Full Stack Developer
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | Mukachevo, Ukraine | Linkedin | Telegram

Summary

Full Stack Developer with 3+ years of commercial experience shipping production-grade features that are fast, reliable, and designed
to scale — delivering up to 40% lower render latency, 30%+ faster page loads, and up to 20% faster large-dataset operations across
B2B SaaS, EdTech, HealthTech, E-commerce, and compliance systems. On the backend, I build services with Node.js/NestJS, design
PostgreSQL schemas, implement business logic, secure REST APIs with RBAC, real-time features, and third-party integrations. On the
frontend, I build React/Next.js interfaces and reusable component libraries adopted across 10+ production modules, with a focus on
scalable architecture, performance, maintainability, and production systems that perform reliably under real-world load.

Skills

Frontend: React, Next.js, TypeScript, JavaScript, Redux, Redux Toolkit, TanStack Query, React Hook Form, Formik, Zustand, HTML5,
CSS3, SCSS, Tailwind CSS, Material UI, Shadcn, Storybook, Emotion, i18next, Webpack, Vite
Backend: Node.js, Express.js, NestJS, Strapi, Prisma, GraphQL, Apollo Server, REST API, WebSocket, Socket.io, WebRTC, JWT, OAuth,
Microservices Architecture, MongoDB, PostgreSQL, Redis
Tools: Git, GitHub, Docker, CI/CD, Jira, Postman, Hoppscotch, Figma, React DevTools, Jest, Cypress, ESLint, Claude, GitHub Copilot

Experience

Full Stack Developer | U.Stork Lab Mar 2025 - May 2026 | Remote
Contributed to multiple production-grade platforms across B2B SaaS, E-commerce, EdTech, HealthTech, and compliance management
domains, delivering scalable full-stack solutions with measurable business impact:
• Delivered end-to-end features for audit management, risk tracking, scheduling, and document control in a compliance
platform, implementing RBAC and complex multi-step forms to digitize business-critical workflows
• Architected and developed backend services with Node.js/NestJS and TypeScript using modular architecture, custom guards,
interceptors, and pipes, implementing business logic, API-level RBAC authorization, REST APIs, data import/export pipelines
with safe-to-retry operations, and third-party integrations with fallback mechanisms for high availability
• Designed PostgreSQL/MySQL relational schemas for compliance and B2B SaaS modules, supporting audit trails, role-based
permissions, and multi-step workflow states while maintaining data integrity across high-volume workloads
• Optimized PostgreSQL queries, indexing, and backend data-access logic for high-volume reporting endpoints, reducing API
response times by 25% and improving performance under large datasets
• Built product catalog, checkout, and payment flows for a digital commerce module, including transaction history and admin-
side sales analytics with real-time charts
• Developed KPI dashboards, SLA compliance tracking, and time-based reporting modules with real-time chart rendering, used
daily by business teams for performance monitoring and decision-making
• Architected reusable component libraries with Next.js and Storybook, adopted across 10+ production modules in EdTech and
HealthTech, improving UI consistency and accelerating feature delivery
• Optimized frontend performance through memoization, virtualization, code splitting, and lazy loading, reducing render
latency by up to 40% under real-world production load
• Implemented SSR/ISR with Next.js, improving page render speed by 30–35% for data-heavy dashboards and reports
• Built advanced data tables with filtering, sorting, pagination, and real-time updates, applying clean architecture and
comprehensive unit/E2E test coverage, reducing large-dataset filtering time by 15–20% across high-load internal systems
Frontend Developer | Sigma Software Jul 2023 - Dec 2024 | Remote
Contributed as a frontend developer on a client-facing product within a professional engineering team, delivering production-ready
features using React and Next.js:
• Developed and maintained reusable React component libraries integrated with Next.js SSR/ISR, ensuring UI consistency and
accelerating feature delivery across multiple CRM modules

• Optimized frontend performance via lazy loading, code splitting, and React Query cache optimization, reducing redundant
API calls and improving initial load times
• Reduced critical production bugs by 15% through systematic edge-case testing and code review practices, improving release
stability for the client-facing CRM product
• Applied frontend security best practices — input sanitization to prevent XSS, secure token-based API communication, and
role-based UI rendering — to protect sensitive CRM client data from unauthorized access
• Integrated REST APIs across user management, reporting, and operational workflow modules in collaboration with backend
engineers
• Resolved complex UI bugs and edge cases in a live production environment, maintaining stability and consistent user
experience across core product areas
• Participated in feature delivery, code reviews, and agile development workflows within a cross-functional engineering team

Education

Uzhhorod National University
Master’s Degree, Computer Software Engineering Sep 2024 - Dec 2025
Bachelor’s Degree, Computer Software Engineering Sep 2020 - May 2024

Languages

English - B2 | Ukrainian - Native