Костянтин

CONTACTS KOSTIANTYN HAMALII
[открыть контакты](см. выше в блоке «контактная информация») FULL-STACK DEVELOPER
[открыть контакты](см. выше в блоке «контактная информация»)
PROFILE
15179 Spain, A-Coruña
Full-stack Developer with over 3 years of hands-on experience in building
LinkedIn end-to-end web solutions using Node.js and Vue.js — from concept to
production deployment. Possess a strong understanding of application
Telegram architecture, REST API principles, third-party service integration, and
performance optimization. Experienced in working with MySQL and
GitHub
MongoDB, developing efficient backend services, and maintaining scalable,
SKILLS maintainable codebases. Recognized for analytical thinking, attention to
detail, and the ability to work independently. Highly motivated to grow within
a team that values code quality, responsibility, and continuous improvement.
REST API development
Front-end development: Vue.js, WORK EXPERIENCE
JavaScript, TypeScript, HTML, CSS,
PALMO MARCH 2023- JUNIO 2026
blades
Full-Stack web developer
Back-end development: Node.js,
Functioned as the sole developer for a key client website, delivering
NestJs, PHP, Laravel, Express.js,
extensive features from concept to deployment.
Websockets, OOP, TypeOrm Maintained scalable REST APIs to ensure reliable service delivery.
Database management: MySQL, Integrated diverse third-party services such as eSputnik and SMS
Sender for improved marketing efforts.
MongoDB, PostgreSQL
Streamlined project performance through optimization techniques and
Version control and tools: Git, continuous monitoring.
Webpack, Docker, Redis Constructed reusable front-end mixins and directed background jobs
to secure high-quality, efficient, and maintainable code.
Asynchronous data processing
Employed a modern tech stack featuring Vue.js (Vue3), Pinia, Node.js,
Code optimization and integrations TypeScript, and Express for development and maintenance of robust
web applications.
EDUCATION PALMO NOV 2022- MARCH 2023
Intern Full-Stack Developer
2020 - 2024 Completed a commercial internship working with Vue.js, Laravel,
KHARKIV NATIONAL Node.js, and NestJS.
UNIVERSITY OF Developed and maintained RESTful APIs, applying OOP principles,
RADIOELECTRONICS clean code practices, and modular architecture.
Collaborated with a mentor, participated in code reviews, and
Bachelor's degree, Software
implemented feedback to enhance project quality.
Engineering

2024 - 2026 KEY ACHIEVEMENTS
KHARKIV NATIONAL
Improved overall application performance by 30% through code
UNIVERSITY OF optimization, refactoring, and asynchronous data handling
RADIOELECTRONICS Successfully integrated 5 third-party services (including eSputnik and
Master's degree, Software SMS Sender), expanding system functionality and improving user
Engineering experience
Developed 10+ reusable Vue3 and Pinia components, reducing future
development time by 15% and improving code consistency
LANGUAGES Engineered scalable REST APIs with Node.js, Express, and TypeScript,
ensuring reliability and efficient data processing
English - Upper-Intermediate (B2) Delivered a full client project 2 weeks ahead of schedule, boosting
Ukrainian - Native customer satisfaction and project trust
Spanish - Beginner (A1) Implemented background job management and automation to enhance
system responsiveness and stability