Pavel Efimchik
Pavel Efimchik

Full-Stack Software Engineer

Actively looking · Member since 9 Nov 2026
Location
Belarus
Desired salary
from 3500 EUR/monthly
Work preference
Remote Only
Experience level
Mid

About

Professional summary

I am a Full-Stack Software Engineer with 4+ years of commercial experience building web and mobile SaaS products from concept through production release.

I specialize in React, React Native, Node.js, Express, and MongoDB, developing cross-platform applications for web, iOS, and Android.

I have delivered more than six production mobile applications to the App Store and Google Play, including products with subscription billing, real-time features, and administration portals.

I design secure REST APIs, data models, authentication flows, and scalable application architectures. I also integrate third-party services such as Stripe, Firebase, Apple, and Google.

I am experienced with AWS, Docker, GitHub Actions, and CI/CD automation. I enjoy working in fast-paced product environments, improving performance, maintaining code quality, and delivering reusable solutions.

Skills

23 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Collaboration

Development

Languages & Frameworks

Experience

Career history

Full-Stack Developer Tradedesk

I lead full-stack development for multi-platform SaaS products across web, iOS, Android, and admin portals. My work includes SDL24, a cleaning-service booking platform; Wondr, a restaurant reservation platform; InTouch Chiropractor, a healthcare ecosystem; and Kosiband, an e-commerce platform.

I build React and React Native interfaces and Node.js/Express server logic, design MongoDB schemas, and create secure REST APIs using JWT authentication. I integrated Stripe subscriptions, webhooks, invoicing, affiliate programs, Firebase notifications, Apple and Google OAuth, map SDKs, Nodemailer, and scheduled Cron workflows.

I created a shared modular UI-kit and API layer across web and React Native platforms, enabling 40% code reuse and accelerating feature delivery by 30%. I published and maintained more than six mobile apps, automated deployments with GitHub Actions and AWS, reduced release effort by 80%, and improved mobile rendering performance to 55–60 FPS.

Frontend Developer NFD

I contributed to a web platform serving more than 176,000 active users. I built interactive visual experiences and 3D/parallax animations using GSAP, ScrollTrigger, and ScrollSmoother.

I adapted graphics-intensive components for mobile browsers, improved cross-device stability, and optimized page loading and web vitals. I also introduced standardized linting and formatting guidelines and participated in peer code reviews.

Frontend Developer Winrace

I worked on an e-commerce marketplace platform, refactoring legacy UI components to improve responsiveness and cross-browser compatibility.

I optimized high-volume product catalog performance with react-window list virtualization and lazy image loading. I also resolved complex navigation and search-filter edge cases to improve the customer search journey and conversion potential.

Web Developer EPAM Systems Inc.

I developed enterprise internal management tools using React and Java Spring Boot backend APIs. I built modular user interfaces and implemented complex CRUD functionality for corporate users.

I participated in Agile and Scrum ceremonies, code reviews, and CI/CD setup for test environments.

Education

Learning history

Belarusian State University of Informatics and Radioelectronics (BSUIR)

Bachelor of Science, Computer Science and Software Engineering

Faculty of Computer Systems and Networks.

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