Hey! I am

Vahagn Harutyunyan

I'm a Senior Full Stack Engineer

Senior Full Stack Software Engineer in Yerevan, Armenia

About

About me

Senior Full Stack Software Engineer with 6+ years of experience building business-critical systems from inception to production. I have developed payment gateways, insurance portals, marketplaces, booking systems, and e-commerce applications.

My expertise includes software architecture, payment systems, transaction processing, and high-concurrency backend development with Node.js, Laravel, and React, including production React Native apps published to the Apple App Store and Google Play.

Name:Vahagn Harutyunyan
Based in:Yerevan, Armenia
Email:vahagnharutyunian@gmail.com
LinkedIn:linkedin.com/in/vahagn-h

Armenian · Native English · Professional Russian · Professional

0+Years in production

0Featured products

Resume

Experience

Six years of production work, from backend services to apps on both stores.

Jul 2024 – Sep 2026
Senior Full Stack Software Engineer
Golden SB Tech Group
- Designed and built a multi-channel payment gateway: account-to-account, card-to-card, crypto, bank gateway, withdrawals, and peer-to-peer.
- Architected transaction processing and database schemas for card, bank, crypto, Stripe, Idram, and merchant withdrawal rails.
- Implemented concurrency-safe transaction matching with transactional and row-level locking and conditional updates.
- Built merchant APIs, reconciliation, reporting tools, and admin dashboards, with real-time payment updates and notifications.
- Designed merchant synchronization for transaction events across multiple merchant systems.
- Developed monitoring and reporting dashboards for payment, banking, and cryptocurrency operations.
- Processed and monitored thousands of daily transactions across channels.
- Mentored junior and mid-level developers, ran code reviews, and joined technical interviews, architecture, and estimation.
Jul 2021 – May 2024
Full Stack Software Engineer
AOByte
- Built investment and insurance platforms for travel, vehicle, and property.
- Integrated Sumsub KYC, governmental services via Ekeng APIs, and MASYS SOAP services for contract validation.
- Developed PDF contract generation and asynchronous notification systems.
- Contributed to architecture, mentoring, estimations, releases, and production support.
Oct 2020 – Jul 2021
Full Stack Web Developer
Join To Hire
- Built full-stack web apps, APIs, and admin interfaces.
Oct 2019 – Oct 2020
Freelance Developer
Independent
- Delivered custom web apps, automation tools, and admin systems, from requirements to deployment.
Sep 2018 – Oct 2019
Web Developer
Wave IT
- Developed and maintained web applications and REST APIs.
- Worked with MySQL databases and frontend integrations.
Jan 2018 – Sep 2018
Backend Developer
Cube Development Studio
- Developed backend services and database-driven applications using MySQL.
- Participated in API development and application maintenance.

Services

What I build

Payment gateways, insurance portals, marketplaces, booking systems, and e-commerce, plus strategy, design, development, and SEO.

Payment Systems
Multi-channel gateways: account-to-account, card-to-card, crypto, bank, withdrawals, and peer-to-peer. Schemas for card, bank, crypto, Stripe, Idram, and merchant withdrawals, with concurrency-safe matching.
Insurance Platforms
Travel, vehicle, and property insurance. Sumsub KYC, Ekeng government APIs, MASYS SOAP contract validation, PDF contracts, and asynchronous notifications.
Marketplaces
Social and commerce marketplaces, including messaging, wallets, jobs, events, and notifications. MeetArte’s feed uses Redis-backed ranking instead of full-table sorting.
Booking Systems
Tourism and reservation platforms: driver bookings, scheduling, reviews, and payments, plus reservation operations.
E-Commerce and SaaS
Multilingual stores and multi-tenant products: catalogs, orders, reviews, QR menus, and bank integrations such as Idram and Ameria.
Mobile Applications
React Native and Expo apps published on the Apple App Store and Google Play, including social, messaging, marketplace, and wallet screens. Feature-rich apps for iOS and Android.
Digital Strategy
Crafting data-driven digital roadmaps to help businesses scale and dominate their niche.
Web Design
Creating visually stunning and user-centric designs that capture your brand essence.
User Experience
Optimizing user flows and interfaces to ensure seamless and intuitive digital interactions.
Web Development
Building robust, secure, and high-performance websites using cutting-edge technologies.
SEO optimization
Boosting your search rankings and driving organic traffic through comprehensive SEO strategies.