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Arsen Manukyan

@arsenmanukyan

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Senior backend engineer specializing in Node.js, NestJS, real-time systems, and production-grade REST APIs.

Armenia

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What I'm looking for

I’m looking to build and own production backend systems—REST APIs, real-time features, and integrations—where I can handle architecture, database design, payments/subscriptions, and reliable deployment/monitoring end-to-end.

I’m a Senior Backend and Full-Stack Engineer with 7+ years of experience building production web applications, REST APIs, real-time systems, and EdTech platforms. I take hands-on ownership across architecture, database design, integrations, deployment, monitoring, and production support—especially where concurrency and state transitions matter.

I’ve built real-time 1v1 quiz battles with matchmaking, invitations, lifecycle state, scoring, rankings, and multiplayer synchronization, while resolving race conditions using transactions and row-level locking. I also deliver payment and subscription flows (webhooks, activation/renewal/expiration), authentication/permissions, and AI/translation integrations—maintaining reliable infrastructure on AWS EC2 with Nginx, PM2, Linux, and production troubleshooting.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Engineer

Current

Koreez

Sep 2023 - Present (2 years 10 months)

Designed and developed backend services and REST APIs for an EdTech platform. Built real-time 1v1 quiz battles and integrated payments, communications, AI/translation APIs, and webhooks while supporting production on AWS.

NestJS PHP REST APIs MariaDB TypeORM Real Time Systems WebSockets Socket.IO Webhooks Nginx PM2 Linux TLS Sentry Kibana

Full Stack Engineer

Popup School

Jan 2023 - Sep 2023 (8 months)

Developed and maintained full-stack web features, including backend APIs and database workflows for education-focused products. Supported feature delivery through implementation, testing, deployment, and production support.

Backend Testing Deployment Production Support

JavaScript Developer

X-SOFT

Jan 2022 - Jan 2023 (1 year)

Built and maintained JavaScript-based application features and integrations across frontend and backend workflows. Worked with APIs and asynchronous processes, focusing on debugging and production maintenance.

JavaScript API Integration Asynchronous Debugging

WordPress Backend Developer

X-SOFT

Sep 2020 - Dec 2021 (1 year 3 months)

Created custom WordPress backend functionality using PHP hooks, REST APIs, plugins, and custom post types. Implemented third-party integrations and registration flows, and delivered performance and production fixes.

WordPress PHP React Hooks REST APIs Plugins Third Party Integrations Registration Flows Content Management

WordPress Full Stack Developer

ELSY

Dec 2018 - Sep 2020 (1 year 9 months)

Developed responsive WordPress websites and custom functionality across PHP, JavaScript, HTML, CSS, themes, and plugins. Maintained client sites by fixing defects and delivering enhancements from specification to deployment.

WordPress PHP JavaScript HTML CSS Word Themes Plugins Deployment