Hayk Sargsyan

Senior Software Engineer | Backend & Full-Stack Development | AI Agentic Development

Open to offers · Member since 11 Jul 2026

Message

Location: Yerevan, Armenia

Desired salary: Unspecified

Work preference: Hybrid / Full Time

Experience level: Senior

About

Professional summary

Senior Software Engineer with 6+ years of professional experience in fintech, adTech, HR/CRM platforms and startups. Proven track record of developing and maintaining monolithic and microservice architectures, migrating legacy systems and leveraging AI agentic workflows. Strong experience with high-load distributed systems, cloud infrastructure, CI/CD pipelines, backend and frontend frameworks. Experienced in working with distributed teams ranging from 3 to 50 people, collaborating closely with developers, stakeholders, and clients.

Experience

Career history

Senior SWE Lineate - Phreesia

Nov 2025 – Present

US-based healthtech role focused on modernizing a legacy AdTech CRM by migrating from .NET Framework to .NET 10, moving high-throughput core and runtime services, and implementing automated migration tools. Worked with React, Claude Code, AWS, Docker, PostgreSQL, and xUnit.net.

Senior SWE EPAM Systems

Sep 2024 – Oct 2025

Worked on a UAE-based fintech HR and CRM hub, integrating third-party services, collaborating with distributed teams, improving API latency through cache warmup, and migrating notifications from sync messaging to event-driven architecture. Stack included .NET 8, Kubernetes, Docker, SQL Server, Azure OpenAI, Redis, React, and Python.

SWE CapitalSoft

Mar 2020 – Aug 2024

Built and maintained fintech systems, including template-driven microservice patterns, CI/CD automation with GitHub Actions, archive automation, and an internal proxy load balancer. Stack included .NET 6, NestJS, Angular, PostgreSQL, Redis, SignalR, gRPC, Supabase, and Firebase Cloud Messaging.