Сергій

Sergii Babikov | Senior Full-Stack Developer​
8648049305 | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)

Summary
Senior Full-Stack Developer with 15+ years of experience designing scalable, secure, and
high-performance web platforms. Expert in Laravel, Node.js, TypeScript, and HL7 integrations. Proven
success in healthcare, fintech, and enterprise systems with 1M+ daily transactions. Passionate about clean
architecture, automation, and mentoring development teams.

Technical Skills
●​ Languages: PHP, JavaScript, TypeScript, Java, SQL
●​ Frontend: Vue.js 2 & 3, Angular, HTML5, CSS3, Tailwind CSS, Bootstrap, jQuery, Inertia.js,
CapacitorJS, Leaflet, Google Maps API, Chart.js, Axios, Pinia
●​ Backend: Laravel, Node.js, Express, RESTful APIs, HL7, Sequelize, WebSockets, OAuth2, JWT
●​ Databases: PostgreSQL, MySQL, Redis, MongoDB, SQLite
●​ Cloud & DevOps: Docker, GitHub Actions, CI/CD, AWS, Nginx, Apache
●​ Tools & Workflow: PhpStorm, Postman, JIRA, Agile/Scrum, Figma, Git, GitLab, Bitbucket
●​ Testing: PHPUnit, Jest, Cypress, Playwright, manual UI testing, API mocking

Work Experience
Senior Developer I – Rymedi, Greenville, SC ​ ​ ​ ​ ​ ​ 09/2023 – 04/2025

●​ Designed and implemented parts of a COVID-19 testing platform with HL7 integration, connecting
over 15 laboratories and enabling secure medical data exchange. Contributed to the development of
a RESTful API using Node.js and TypeScript, supporting over 50,000 daily transactions; helped
optimize performance by 40%.
●​ Optimized SQL queries and MySQL database structure to improve data processing speed and
system stability.
●​ Integrated the platform with external APIs from laboratories and healthcare providers, ensuring
HIPAA compliance.

Lead Software Architect – Dyvotech​ ​ ​ ​ ​ ​ ​ 12/2018 – 07/2023
●​ Designed mobile banking system (Laravel, Redis, PostgreSQL) for 1M+ users
●​ Migrated monolith to microservices, cutting deployment time by 50%
●​ Refactored SportBank loyalty platform, reducing API response time from 2s to 200ms

Senior Web Developer – Oracle / TOA Technologies 06/2015 – 06/2018
●​ Developed FSC Mobile (100k+ downloads) using Cordova and Java
●​ Integrated SOAP/REST APIs syncing 1M+ customer records daily

Senior PHP Developer – Probegin B.V. 06/2018 – 07/2018
●​ Restructured MySQL DB for Unica Form Constructor (+60% performance)
●​ Built scalable Zend Framework API (10k+ concurrent users)

Earlier Roles:
●​ Sputnik Avto: GPS tracking systems with Google Maps API
●​ Liwil: Founded dev agency, scaled to 10-person team across 5 countries

Education
Master of Science in Information Technologies​
Ukrainian State Marine Technical University, 2001