Aleksandr Vopilovskii
Aleksandr Vopilovskii

Senior Full-Stack Engineer

Open to offers · Member since 24 Sep 2026
Location
Belgrade, Serbia
Desired salary
Unspecified
Work preference
Remote Only / Full Time, Contract
Experience level
Senior

About

Professional summary

I am a Senior Full-Stack Engineer with more than 15 years of experience building, shipping, and operating web products. I specialize in TypeScript, Node.js, React, backend architecture, real-time systems, and cloud infrastructure.

I take ownership from idea through production, turning ambiguous requirements into simple, maintainable solutions. My work has supported products used by more than 100,000 users and systems processing hundreds of thousands of daily messages, payments, and emails.

I have designed real-time messaging, email delivery, payment webhook, and contract-first API integration systems. I am experienced with PostgreSQL, MongoDB, Redis, queues, GraphQL, WebSockets, observability, testing, and CI/CD.

I have led a five-person engineering team, including hiring, mentoring, technical direction, delivery planning, and collaboration with leadership on roadmap, capacity, and technical debt. I enjoy helping teams establish practical engineering practices and delivering core platform capabilities under tight timelines.

I work effectively in remote, distributed environments and have collaborated with companies across the US, Estonia, Russia, and other international markets. I prefer clear ownership, pragmatic architecture, and reliable production systems.

Skills

42 capabilities

Tech stack & tools

Working toolkit

Analytics

Application Hosting

Application Utilities

Experience

Career history

Full Stack Engineer VoiceScript

Worked remotely as a B2B contractor on web product development, completing approximately 700 tasks and 4,200 commits, representing about 53% of the team's web-development volume.

Split the frontend from a legacy monorepo and introduced contract-first integration with OpenAPI-generated TypeScript clients. Designed and shipped a real-time messaging pipeline handling approximately 500,000 messages per day using WebSockets, queue-based delivery, and client-side reassembly.

Built a BullMQ email delivery pipeline sending approximately 3,000 messages daily, implemented Stripe subscription and payment webhook processing for approximately 10,000 daily requests, and addressed AWS API Gateway payload limits through chunking and asynchronous delivery.

Owned core frontend architecture and delivered API keys, invitations, and subscription features. Directed development of Attorney Player, a Next.js real-time transcript viewer MVP delivered in one month.

Engineering Lead AllCart LLC

Led engineering for a remote B2B contractor engagement building a multi-tenant, Shopify-like e-commerce platform. Closed approximately 200 stories and initiated approximately 125 more.

Built and led a five-person engineering team, with responsibility for hiring, mentoring, technical ownership, and delivery. Helped deliver the core platform in approximately one year during its intensive build phase.

Established DevOps practices from scratch using GitLab CI/CD and GCP, automating build, test, and deployment workflows. Partnered with leadership on roadmap prioritization, capacity planning, and technical-debt management.

Lead Back End Developer SkinSwipe

Worked remotely as a B2B contractor on Steam skin trading products. Built SteamFox, a Steam Marketplace price collector for CS and Dota skins.

Developed Node.js backend services supporting a Steam skin trading product with more than 100,000 active users. Designed APIs for native iOS and Android clients.

Initiated Vue.js frontend development and mentored junior frontend engineers. Also handled servers, CI/CD, and infrastructure responsibilities.

Full Stack Engineer CyberData N.V.

Developed full-stack web applications using React, Vue.js, and Node.js.

Contributed to an online casino application with server-side rendering in React and built an internal landing-page builder using Node.js and Vue.js.

Front-End Engineer Vneto Systems

Developed frontend functionality for payment, back-office, and point-of-sale systems for Pizza Hut Israel.

Worked with Angular, Node.js, and Express to support business-facing application workflows.

Front-End Engineer NRGSoft

Developed frontend features for an online assessment platform.

Worked with Backbone.js and React to build and maintain the product interface.

Full Stack Engineer Glavstroy

Built and migrated Drupal 7 news websites for self-regulatory organizations.

Worked across full-stack implementation and content-management platform delivery.

Full Stack Engineer Quantron Systems

Built high-throughput Node.js backend services and cloud infrastructure for US digital-health clients, including NantHealth and NantMobile.

Contributed to full-stack delivery with a focus on backend reliability and cloud operations.

Full Stack Engineer 8heads / Advantika

Delivered more than 30 custom web applications using Drupal and other CMS platforms.

Set up Linux development environments and wrote early team coding standards to support consistent engineering practices.

Education

Learning history

Far Eastern Technical College of Geodesy and Cartography

Diploma, Computer Science

Diploma in Computer Science.

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