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Martin Garchov

@martingarchov

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Full Stack Software Engineer at Synthflow AI who cut voice AI time to first audio by 45%.

Bulgaria

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At Synthflow AI, I architected the streaming call runtime for its voice AI agent platform, connecting speech-to-text, OpenAI, and text-to-speech over WebSocket and gRPC. This cut time to first audio by 45%.

I also built call-state handling, SIP integrations, and per-turn observability. The system held p95 replies under 800 ms and reduced orphaned sessions by 90%.

At DataArt, I delivered Invesco Basecamp with React, TypeScript, Java, Spring Boot, and PostgreSQL. Its guided selection flow helped advisers avoid invalid portfolio combinations, and support tickets dropped by 40%.

Earlier at DataArt and Dreamix, I worked on asset management, aviation, insurance, and compliance products. That included moving an analytics engine to Azure with zero data loss and contributing full stack features to MyComplianceOffice as an intern.

Experience

Work history, roles, and key accomplishments

Founding Engineer

Synthflow AI

Nov 2023 - Sep 2026 (2 years 10 months)

Architected the streaming call runtime for a voice AI agent platform, cutting time to first audio by 45% and reducing orphaned sessions by 90%. Led multi-region delivery on Kubernetes and GitHub Actions, sustaining 99.95% uptime.

Python fastAPI WebSockets gRPC OpenAI ElevenLabs OpenTelemetry Prometheus Grafana Docker Kubernetes GitHub Actions React TypeScript PostgreSQL Redis Twilio WebRTC SIP Kamailio Freeswitch Five9 8x8 Zoom RingCX Pytest Sentry

Senior Software Engineer

DataArt

Sep 2021 - Nov 2023 (2 years 2 months)

Led full stack delivery of a model portfolio app for financial advisers, launching the core selection journey in three months. Architected a universal design system for e-commerce sites in 40+ countries, reducing duplicated UI work by about 50%.

React TypeScript Java Spring Boot PostgreSQL REST APIs Junit Jest React Testing Library GitHub Actions Storybook WCAG Atomic Design Design Tokens CI CD

Software Engineer

DataArt

Jun 2020 - Sep 2021 (1 year 3 months)

Migrated an analytics core to Azure and decomposed the calculation engine into Java and Spring Boot microservices on Kubernetes. Implemented Azure DevOps pipelines that cut release time by 70% and eliminated manual database releases.

Java Spring Boot Docker Azure Kubernetes RabbitMQ Junit Azure DevOps SQL Server MongoDB Azure SQL REST APIs Azure Container Registry Azure Kubernetes Service Azure Application Insights SQL Server Data Tools

Software Engineer

Dreamix

Mar 2018 - May 2020 (2 years 2 months)

Engineered Java and Spring Boot microservices on AWS for flight planning, integrating multiple systems and taking the system to production in one year. Automated vendor invoice matching, assigning 85% of invoices without manual work.

Java Spring Boot AWS Docker Kubernetes Angular REST APIs Jetex APIs SQL PostgreSQL Microservices

Full Stack Developer Intern

Dreamix

May 2017 - Feb 2018 (9 months)

Contributed full stack features to a compliance platform, delivering review and approval workflows with server-side validation. Documented data model changes and API contracts, reducing rework on sprint deliverables by roughly 30%.