Roman Kozak

AI Agentic QA Architect & Senior QA Lead

11+ years directing Quality Assurance across Corporate Online Banking at Ukraine's largest bank (PrivatBank, 24M+ customers), managing 15 QA engineers across 5 Scrum streams. Rare hybrid combining C-level financial governance (former Deputy CFO & Financial Controller) with pioneering AI Agentic Systems Engineering — orchestrating autonomous multi-agent software and test engineering factories.

Concurrently with banking duties, independently architected, trained, and launched a multi-product distributed cloud ecosystem: TestBuster.AI (live SaaS, Stripe billing, 150+ endpoints), Atlassian Forge Suite, Google Edge (VS Code/IntelliJ, 2,350+ tests, MCP), and MockBank live sandbox.

York, United Kingdom +44 7393 876 815 [email protected] LinkedIn UK Work Authorisation: Yes
Live SaaS: TestBuster.AI Live Bank Sandbox GitHub Repositories
11+ Yrs
FinTech QA Lead
24M+ Retail/Corporate accounts
16 Roles
Multi-Agent Swarm
Deterministic factory lifecycle
2,350+
Automated Tests
100% Pass in Google Edge IDE
12 UI & 8 API
Frameworks
Zero-touch code synthesis
£29 / £99
Commercial Tiers
Live Stripe & Keycloak SSO
$0.00
FinOps Waste
Hybrid 7-LLM failover cascade
Live Production & Flagship Systems
Engineered 100% via Agentic Orchestration

TestBuster.AI

Autonomous Multi-Agent Test Automation SaaS Platform
Live Production
  • Distributed Microservices Mesh: 6 services (BFF Gateway, AI Test Core, Cognitive Crawler, Auth Vault, MockBuster) on Hetzner Cloud via 10+ Docker containers.
  • Cognitive Crawler: 15-stage pipeline powered by Monte Carlo Tree Search (MCTS) exploring complex SPAs; synthesizes POMs and Stage 14 Axe-core A11y (WCAG 2.2 AA) suites.
  • Universal Code Generation: Native code synthesis for 12 UI & 8 API frameworks (including Clean Architecture C# RestAssured.Net net8.0 with NUnit/xUnit).
  • Living Traceability: 1-Click topology import from Confluence Markdown/CSV with automated Dagre 4-layer hierarchical auto-layout.
  • Enterprise Security & Monetization: Keycloak OIDC/OAuth2 SSO, Stripe Billing (£29/£99 with automated webhooks), Anti-DDoS rate-limiting.
Node.js/BFF Python FastAPI Keycloak OIDC Stripe Billing Docker Mesh Caddy TLS Axe-Core
https://testbuster.ai Creator & Principal Architect

TestBuster Forge Suite

Native Jira Cloud & Confluence Cloud Enterprise App
Marketplace Ready
  • 1-Click API Test Generator: Synthesizes production-ready test suites for 12 frameworks directly inside `jira:issuePanel` from OpenAPI or cURL.
  • Ticket Acceptance Fast-Check: 35-second scoped evaluation of modal visibility, z-index, clipping, and Esc dismissal via strict Scope Clamping.
  • Bug Capsule Replay Player: Deterministic in-ticket debugger for crashes via `?tb_replay=` with DOM diff, failed request highlighter, and Playwright spec export.
  • Living DoD Release Gate Macro: Confluence macro rendering real-time release status (`🟢 READY` / `🔴 BLOCKED`) with zero-retention security packaging.
  • Atlassian Asymmetric RS256 JWT: Cloud Fortified compliance, zero signup 30-day trials verified against live Atlassian JWKS.
Atlassian Forge v2 Jira Cloud Confluence Cloud RS256 JWT / JWKS Cloud Fortified
Atlassian Forge Cloud Ecosystem Creator & Architect

Google Edge

Hybrid Agentic Orchestrator & Multi-IDE Ecosystem
2,350+ Tests (100% Pass)
  • Multi-IDE Plugins: Production-ready VS Code (v3.0.0 Enterprise) and IntelliJ IDEA plugins with 3-way visual diff split editor and AST symbol locks.
  • Model Context Protocol (MCP): Native Stdio MCP Server & Client Runtime with auto-discovery across Cursor, Claude Desktop, Antigravity, and VS Code.
  • Autonomous Swarm Self-Healing: Closed-loop incident resolution (`DETECTED → DIAGNOSING → GENERATING → VALIDATING → VOTING → APPLIED`) with 1-click rollback.
  • AI Test Flakiness Predictor: Ingests Newman/Playwright/PyTest reports, computes Flip-Rates, rewrites fragile timeouts, and provides 1-click `@quarantine`.
  • Babel AST Mutation Engine: Mutation testing operators to reveal blind spots in test suites; Git Diff Blast Radius engine estimating story points.
Model Context Protocol VS Code API v3 IntelliJ SDK Babel AST Self-Healing Swarm
Developer Tooling & Agent Runtime 2,350 Passing Automated Tests

Mock Bank

Production-Grade Banking Sandbox & Ground-Truth Target
Live Production
  • 17+ Core Financial Modules: Auth (JWT + Refresh), Accounts, Idempotent Transactions, OTP Payments, Currency Exchange, Cards, Loans, and Consolidated Balance Financial Center.
  • Event-Driven Architecture: Integrated RabbitMQ broker handling asynchronous transaction streams and real-time ledger recalculations.
  • Dual Enterprise Frontends: Responsive Vanilla JS SPA and Angular 17 corporate banking interfaces.
  • Isolated Production Host: Hosted on Hetzner Cloud with automated Let's Encrypt TLS and Zero Attack Surface hardening.
Node.js Monolith RabbitMQ PostgreSQL Angular 17 SWIFT/SEPA Simulator
https://bank.testbuster.ai Creator & Architect
Technical Skills & Methodologies
AI Agentic Systems (Core Superpower)
Multi-Agent Swarm Orchestration (16 roles) Model Context Protocol (MCP Server & Runtime) Multi-LLM Cascades (Cerebras ~10ms, DeepInfra, DeepSeek) Ollama Reverse SSH Tunnels Semantic Knowledge Graph Memory (64-dim L2) Reasoning Sanitization (`stripReasoningArtifacts`) FinOps Cost Governance ($0 Waste)
Model Fine-Tuning & Training
Qwen 2.5-Coder SDET Fine-Tuning LoRA / QLoRA Adapters IBM Granite-8B QA Synthetic Dataset Engineering (33.9k QA pairs) Model Quantization & GGUF Serving
Quality Engineering & SDET
Universal Synthesis (12 UI & 8 API Frameworks) Playwright, Cypress, Selenium, PyTest, C# REST Assured (Java / C# Net8.0), Karate, Postman Algorithmic Design (Pairwise IPOG, EP/BVA 7-pt) OWASP Security Fuzzing Axe-core Accessibility (WCAG 2.2 AA) ProductionBugAuditor (Console/Network Traps) Babel AST Mutation Testing Engine
IDE & Developer Tooling
Atlassian Forge v2 (Jira & Confluence Cloud) VS Code Extension API (v3.0 Enterprise) IntelliJ Platform Plugin SDK Model Context Protocol (MCP Stdio Client) AST Symbol Locks & FIM Ghost Text
Cloud, DevOps & SecOps
Hetzner Cloud VPS Docker Compose Mesh (10+ Containers) Caddy Auto-TLS & Reverse Proxy Anti-DDoS & Fail2ban Keycloak IAM (OAuth2 / OIDC, RBAC) Stripe Payments & Webhooks Redis & BullMQ Queues RabbitMQ Message Broker
Corporate Banking & FinTech Domain
Corporate B2B Online Banking Core Payments & Idempotent Transactions SWIFT / SEPA Simulators Anti-Fraud Pattern Analysis Financial Risk Modeling & Compliance
Professional Experience
Senior QA Lead · PRIVATBANK (Ukraine's Largest Retail Bank, 24M+ customers)
Nov 2014 – Present · York, UK / Remote

Directing Quality Assurance for Corporate Online Banking — the bank's core B2B financial ecosystem.

  • Team Leadership & Scale: Manage and mentor a distributed team of 15 QA engineers (12 Manual + 3 AQA) across 5 parallel Scrum streams. Author master test strategies for high-risk financial feature rollouts.
  • Automation & AI Transformation: Shifted QA from manual-first to automation-first engineering; introduced REST Assured, Selenide, and CI/CD quality gates, while mentoring the team on leveraging modern AI and agentic tools for test design and synthetic data creation.
  • Financial Compliance & Risk Governance: Collaborate with Information Security and Enterprise Architecture to enforce banking security standards, fraud detection procedures, transaction idempotency, and regulatory compliance across multi-million daily corporate transactions.
  • Mentorship & Culture: Established onboarding bootcamps, test design workshops, and automation coaching for junior and middle QA engineers.
Earlier Career Trajectory at PrivatBank & Commercial Management
• Project Manager / IT Security Analyst (PrivatBank, May 2014 – Jul 2014): Designed payment monitoring and anti-fraud detection procedures for individual online banking payments.
• Chief Executive Officer (Maxi-Service LLC, Sep 2013 – Mar 2014): Founded and scaled a retail management company. Established management accounting, IT infrastructure, and territorial expansion strategy.
• Deputy Chief Financial Officer / Senior Controller (PrivatBank, 2007 – 2013): Controlled capital and budgets for multi-million investment portfolios across metallurgy and chemical sectors; modelled corporate risk scenarios and reported directly to executive stakeholders.
Education & Academic Research

National Mining University, Dnipro, Ukraine

  • MSc Administrative Management (2007)
  • MSc Environmental Economics (2006)
  • MSc Mining Engineering (2005)

Published 5 academic research papers in enterprise economic security and environmental modelling (2006–2012).

Languages & Community Leadership

Languages:

  • English: Upper-Intermediate (B2) — daily professional & community use in the UK
  • Ukrainian: Native | Polish: Conversational | Russian: Fluent

Community Leadership (York, UK):

Coordinated over 140 worship services across English and Ukrainian churches in the UK, directing multicultural teams and livestreaming technical infrastructure.