Антон

Anton Basaliuk
Full-Stack JavaScript Developer
Alicante, Spain | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section) | github.com/AntoniBasa

SUMMARY
Full-Stack JavaScript Developer with commercial experience building and maintaining modern web
applications. Strong in React/Next.js, TypeScript, Node.js (Express), GraphQL, PostgreSQL, MongoDB,
Redis and API integrations (REST, webhooks, RabbitMQ). I focus on production-ready delivery: clean
architecture, clear documentation (OpenAPI/Swagger), automated testing (Jest/Cypress), CI/CD
(Bitbucket Pipelines, Jenkins), and performance/SEO improvements (Lighthouse 90-95+, Core Web
Vitals).

WORK EXPERIENCE
Full-Stack JavaScript Developer
Wifox (IT Solutions Ltd, Fintech) | Apr 2023 - Jul 2026
Developed and maintained CRM and exchange/trading platform modules using React/Next.js, TypeScript,
Node.js (Express), GraphQL, MongoDB and PostgreSQL in a production environment.
• Worked on a web-based trading terminal, exchange platform modules and internal CRM for operations
teams (status tracking, workflows, integrations).
• Built and consumed GraphQL APIs for all communication between the frontend and the CRM backend
(queries, mutations, schema design).
• Designed and implemented REST APIs; integrated frontend with backend services; built webhook-based
integrations and asynchronous processing (RabbitMQ).
• Used PostgreSQL for the trading platform data and for CRM analytics; worked with MongoDB for
application data.
• Integrated Sumsub KYC end-to-end (SDK/iframe, webhooks, status lifecycle, manual review, retries)
connected to internal backend and CRM for full verification tracking (statuses + documents).
• Implemented authentication and authorization (JWT/refresh, RBAC), rate limiting, background
jobs/queues and multiple third-party/payment-related integrations; used Redis for sessions, tokens and
verification flows across services.
• Used AI-assisted development workflows (Cursor, Claude) to speed up delivery: scaffolding/refactoring,
generating targeted test scenarios and validating feature behavior while keeping full code review and
ownership of the final implementation.
• Wrote automated tests (Jest + Cypress) with ~80-90% coverage on key flows.
• Improved Lighthouse Performance to 90-95+ and enhanced Core Web Vitals (LCP/CLS) and SEO
across production pages.
• Containerized and deployed services with Docker on Linux servers behind Nginx; built and maintained
CI/CD pipelines (Bitbucket Pipelines, Jenkins) for build, test and deployment; handled production
troubleshooting and performance optimization.

Full-Stack JavaScript Developer (Freelance)
ProfService.ua and other clients | Sep 2021 - Apr 2023
• Built landing pages with lead forms and delivered responsive, production-ready UI.
• Developed an e-commerce store and admin panel (React, Node.js/Express, MySQL): catalog, product
pages, cart, responsive UI and admin roles.

PROJECTS
Telegram Bot - Car Budget Tracker (in development)
Node.js/Express + MongoDB; expense categories, multi-currency, multi-language support (export
planned); private repository (planned monetization).

E-Commerce Store and Admin Panel
Developed end-to-end (React, Node.js/Express, MySQL) including catalog, product pages, cart, responsive
UI and admin roles.

SKILLS
Languages: JavaScript, TypeScript, HTML, CSS
Frontend: React, Next.js
Backend: Node.js, Express, REST APIs, GraphQL, RabbitMQ, Webhooks, OpenAPI/Swagger
Auth & Security: JWT, RBAC, Rate Limiting
Databases: PostgreSQL, MongoDB, MySQL, Redis
Testing: Jest, Cypress
DevOps & Tools: Docker, Linux, Nginx, CI/CD, Bitbucket Pipelines, Jenkins, Git, GitLab, Bitbucket,
Postman
AI Tools: Cursor, Claude

EDUCATION
Software Engineering (student)
College of Business and Analytics, Kyiv | 2024 - 2027 (expected)

COURSES
Front-End Developer Course (6-month program) | 2019 - 2020

LANGUAGES
Ukrainian - Native | English - A2