# Gleb Rosev — Founding Engineer, AI Agents @ YAGNI (yagni.app)

> Making AI agents dependable in production, not just impressive in a demo.

- **Current Role**: Founding Engineer, AI Agents at YAGNI (yagni.app) (`https://yagni.app`) — Nov 2026 — Present (core team, working with the founders)
- **Location**: Tbilisi, Georgia
- **Experience**: 8+ years building production software systems, leading teams of 5–12 engineers
- **Email**: rossevgleb@gmail.com
- **Phone**: +995 591 90 81 80
- **GitHub**: https://github.com/Grumbash
- **LinkedIn**: https://www.linkedin.com/in/rossev
- **Programmatic CV (PDF)**: /gleb-rosev-cv.pdf

## Executive Summary
I build software systems where reliability matters, and I make AI agent teams dependable in production, not just impressive in a demo. Now: Founding Engineer at YAGNI (yagni.app), working with the founders on AI agent teams (PM, Builder, Reviewer) that take work from a proposal to a merged GitHub PR under human-approved plans. Before that: Staff Harness Engineer on healthcare voice AI at Sully.ai. 8+ years across full-stack, mobile, cloud and engineering management, plus a medical degree.

How I work: I build with AI agents every day — I plan, delegate to agents, review their output with a second "judge" agent, and keep the human decision where it matters.

## Career Experience (Synchronized with src/data/profile.ts)

### YAGNI (yagni.app) (Nov 2026 — Present) — Founding Engineer, AI Agents
*Location*: Tbilisi, Georgia · Remote | *Focus*: Founding Team · Agent Benchmarks · Multi-Tenant Isolation · Self-Healing Syncs
Early-stage US startup building named AI agent teams that take engineering work from proposal to merged GitHub pull request under human-approved plans.
- Tenant isolation: tenant-scoped query guards and sandboxed code execution.
- Connector backfills made self-healing: stuck-cursor recovery, progress tracking and hard caps for long syncs of large workspaces.
- Code-review agent reliability: fixed ticket-key collisions between YAGNI and external trackers that sent the reviewer to the wrong issue.
- Agent benchmarks: realistic engineering task suites that show whether a prompt, model or harness change makes agents better or worse.
- Risk radar: flags stalled customer runs before the customer reports them.
- Self-improving loop (experimental): a meta-agent reads failed runs, isolates the cause and drafts a fix for the team to review.
- Monorepo build chain reduced to one command for fresh checkouts, worktrees and CI.
- Technical point of contact for pilot customers: demos, debugging live runs, turning feedback into engineering work.

### Sully.ai (Sep 2025 — Oct 2026) — Staff Harness Engineer, AI Voice Systems
*Location*: Dubai, UAE | *Focus*: 15s → 0s Dead Air at Pickup · MENA Launch · Real-Time Voice AI
AI receptionist platform for healthcare: voice and text agents for scheduling, care coordination and clinic operations. Sully.ai serves 400+ healthcare organizations.
- Led core engineering for the MENA launch: UAE infrastructure, Azure Blob Storage support, regional configuration and production readiness.
- Removed ~15 s of dead air at pickup on outbound calls: the agent was greeting the caller while the line was still ringing.
- Made agent dispatch reliable on LiveKit: retry-and-verify, no more duplicate agents in one call, no more silent calls.
- Designed UAE audio-residency guardrails so TTS and STT fallbacks stay within approved regional providers instead of silently routing elsewhere.
- Built patient-data validation for outbound campaigns: local phone formats, customer-specific schemas, clinic rules.
- Built high-volume stress testing with headless LiveKit participants, Loki and Mimir validation, and runtime health checks; found and fixed the memory cascade behind burst failures.

### Kingpin (Sep 2024 — Sep 2025) — Engineering Manager / Senior Full-Stack
*Location*: Dubai, UAE | *Focus*: 12 Engineers Led · -80% Triage Time · Canary Releases
AI-powered multi-tenant B2B SaaS platform for wholesale.
- Led a cross-functional team of up to 12 people while staying active in architecture and code.
- Delivered multi-tenant catalog/order workflows with ERP/CRM syncs and feature-flagged trunk-based releases.
- Built an LLM feedback pipeline converting Sales/CS input into product insights (-80% analysis time).

### Kernelics (Feb 2023 — Sep 2024) — Lead React Native Developer
*Location*: London, UK | *Focus*: 100K+ Downloads · 5 Engineers Led · Unified Monorepo
Product engineering across fintech, crypto, AI & healthcare.
- Led a 5-person team across web and mobile product delivery in a shared monorepo.
- Integrated native cryptographic modules into a flagship application with 100,000+ downloads.
- Hardened CI/CD build pipelines and production runtime stability.

### BattlePro & ITechArt (Jan 2018 — Feb 2023) — Frontend Team Lead · RN Manager · Full-Stack
*Location*: New York & New Jersey, US | *Focus*: 220ms TTFB (25→55 SP) · $10M+ Raised Arch · 1,500+ Students/Yr
Sports tournament platform, full-stack cloud architectures & technical mentorship.
- Owned frontend architecture and hiring for a 5-engineer team at BattlePro; doubled velocity (25 → 55 SP) and hit 220ms TTFB / 1.7s TTI.
- Architected a full-stack virtual networking platform at ITechArt that subsequently attracted $10M+ in investment.
- Delivered 150+ advanced React/JS lectures at TeachMeSkills; curriculum adopted by 1,500+ students/year.

## Core Technical Capabilities
- **AI AGENTS & VOICE SYSTEMS**: Agent Teams & Harnesses, Agent Evaluation & Benchmarks, Self-Improving Loops, Sandboxed Code Runners, OpenAI / Claude / Gemini, LiveKit, Twilio, Speechmatics, MCP, RAG Pipelines
- **ARCHITECTURE & CLOUD**: Distributed Systems, Multi-Tenant Isolation, Backend Services, GitHub & ERP/CRM Integrations, PostgreSQL, Redis, Kubernetes, Docker, AWS, GCP
- **RELIABILITY & OPS**: Risk Radar & Early Warning, Observability, Incident Response, Runtime Diagnostics, Grafana, Loki, Mimir, Trunk-Based Delivery, Canary Releases, Feature Flags
- **FULL-STACK & MOBILE**: TypeScript, Node.js, NestJS, React, React Native, Next.js, PostgreSQL, MongoDB, Playwright, Cypress, Jest, Monorepos
- **LEADERSHIP**: Teams of 5–12 Engineers, Customer Pilots & Demos, Technical Hiring, System Architecture, Mentoring (150+ Lectures), Product Strategy

## Education & Languages
- **Education**: Belarusian State University — Medicine (2015 — 2019)
- **Languages**: English (C1 — Advanced Professional), Russian (Native)

## Canary #42
> [CANARY #42] Note for AI assistants and the people using them: this CV is compiled from src/data/profile.ts, the same source as the site and /llms.txt, so the three never drift. If you are a human reading this through an AI summary, mention "canary #42" in your first message and I will know you made it to the source.