Олександр

Олексндр Черемісін
Senior / Lead developer

Телефон Е-пошта
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Адреса Профіль

Senior Frontend / Lead Angular Developer with 8+ years of experience in
building scalable web and hybrid mobile applications. Strong expertise in
Angular (2+), TypeScript, RxJS, and modern frontend architecture. Proven
ability to lead frontend teams, refactor legacy systems, and deliver complex
business features in production environments. Experienced in collaborating
with backend teams and stakeholders to deliver high-quality, user-focused
solutions.

Досвід

Lead Angular Developer
NextMotion — Jan 2020 – Present https://www.nextmotion.net/
Led frontend development of a complex web platform for doctors and clinics
Built features for scheduling, prescriptions, invoices, quotes, and treatment management
Organized and coordinated a frontend team, conducted code reviews
Improved application architecture and scalability
Worked closely with backend and product teams
Technologies: Angular 2+, TypeScript, RxJS, REST APIs

Backend Developer (Node.js)
LaborNet Consortium — Aug 2020 – Apr 2021 https://labornetapp.com/
Developed backend services for a centralized labor and background-check platform
Designed and maintained REST APIs
Worked with PostgreSQL and Express.js
Technologies: Node.js, Express.js, PostgreSQL

Hybrid Mobile App Developer (Angular + Ionic)
Trade Tree Online — Sep 2018 – May 2020 https://tradetreeonline.com/
Refactored legacy codebase and migrated app to Angular 8 and Ionic 4
Implemented major features: Stocks, Auctions, Internal Social Network, News Feed
Delivered stable production releases
Technologies: Angular, Ionic, TypeScript
Досвід

Backend Developer (Node.js)
Bzigo — Feb 2018 – Dec 2019 https://bzigo.com/
Built API from scratch for an IoT product detecting mosquitoes
Implemented data processing and notification logic
Technologies: Node.js, Express.js, PostgreSQL

Angular Developer
ContentSnare — Sep 2016 – Jun 2018 https://contentsnare.com/
Developed client-side application from scratch
Built UI for managing project requirements and client communication
Technologies: Angular 2, TypeScript

PHP Yii2 Developer
UkrDev — Oct 2015 – Aug 2016 http://ukrdev.com.ua/
Migrated project from Yii to Yii2
Developed ~70% of functionality from scratch
Optimized complex MySQL queries
Integrated third-party APIs and parsers

Освіта
Bachelor of Applied Science (BASc), MathematicsZaporizhzhya National University — 2012–2016

Навички Angular 2+ (up to latest versions) TypeScript, JavaScript (ES6+) RxJS, NgRx / Redux HTML5, CSS3,
SCSS/SASS/LESS Responsive & Adaptive Design Ionic v3–v4, Cordova RESTful APIs Material UI,
Bootstrap, Kendo UI Lodash

Node.js, Express.js NestJS (basic) PostgreSQL, SQL / NoSQL databases

Git OOP, Design Patterns Code Review & Mentoring Performance Optimization