Resume
Vitalii Serbyn
AI Platform / MLOps Engineer
Professional Summary
Senior engineer with 12+ years shipping production systems in mobile, web, and cloud. I design and run reliable LLM services with clear SLOs, CI/CD, MLflow registries, cost controls, and real observability. I have led small teams, owned release trains, and I bring that discipline to building and operating AI platforms that are easy to deploy, measure, and roll back.
Technical Skills
LLM & GenAI (Current Focus)
MLOps & Platform (Learning)
Backend & Data (12+ years)
Cloud & Infrastructure (Production)
Observability & Ops (Expert)
Frontend & Mobile
Professional Experience
AI Platform / MLOps Engineer
Easelect LTD • Remote
- Built Threads-Agent GenAI platform with MLflow registry, SLO-gated CI, and production observability
- Implemented ROI-Agent for automated media buying with multimodal pipeline (BLIP-2 + LLM analysis)
- Created Achievement Collector for PR impact analysis and automated portfolio generation
- Developed reliable LLM services with clear SLOs, cost controls, and real observability
- Applied production discipline to AI platforms: explicit SLOs, fast rollback, cost budgets
Senior/Lead Engineer
EPAM, GlobalLogic, Startups • Remote/Hybrid
- Led teams of 3–4 engineers, owned release trains with 99.5+ uptime for mobile apps (5M+ MAU)
- Optimized backend APIs serving 1M+ requests/day with p95 latency <200ms (Redis caching, query optimization)
- Implemented A/B testing frameworks processing 100k+ events/day for user behavior analysis
- Built event-driven architectures with message queues handling 50k+ messages/min peak load
- Established monitoring with Prometheus/Grafana: 15+ custom metrics, alert rules, SLA tracking
- Reduced deployment time from 45min to 3min using Docker + Kubernetes + automated rollback
AI Relevance: These same patterns apply to LLM services: p95 latency SLOs, request/response caching, event processing for model inputs, monitoring for drift detection, and fast rollback for model deployments.
Key Projects
Threads-Agent — GenAI Content Platform
LangGraph • MLflow • Kubernetes • Prometheus • 2024 • Personal R&D
- Multi-service system: persona runtime, optimizer service, publishing adapters
- MLflow model registry with evaluation jobs tied to CI for automated quality gates
- SLO-gated deployments on p95 latency, error rate, and token-cost deltas
- Full observability stack: Prometheus metrics, Grafana dashboards, Jaeger tracing
ROI-Agent — Media Buyer Automation
BLIP-2 • Ollama • Meta Ads API • Celery • 2024 • Personal R&D
- Multimodal pipeline: BLIP-2 for creative captions, LLM analysis for copy variants
- Hybrid inference: local Ollama (Mixtral) with OpenAI fallback and structured output
- A/B testing with sequential decision rules, performance rollups, policy guardrails
- Integrations: Facebook Graph API, Shopify webhooks, Slack to Linear automation
Achievement Collector — Portfolio Automation
GitHub API • Impact Analysis • Portfolio Generation • 2024 • Personal R&D
- GitHub PR analysis extracting technical metrics and generating ImpactScores
- Automated portfolio generation from development activity and MLflow experiments
- CI integration for consistent reporting and resume bullet generation
High-Traffic Mobile Backend Infrastructure
Node.js • PostgreSQL • Redis • Kubernetes • 2018-2022 • EPAM/GlobalLogic
- API gateway handling 1M+ requests/day with circuit breakers and rate limiting
- Real-time event processing: 100k+ events/day through Redis Streams and message queues
- Database optimization: query performance tuning reducing p95 response time from 800ms to 120ms
- Monitoring implementation: 20+ custom Prometheus metrics with Grafana dashboards and PagerDuty alerts
Education
M.Sc. in Computer Science
V. N. Karazin Kharkiv National University
Software Engineering Management
EPAM School
Business Setup & Legal
Contracting
- UK LTD available for contracting
- Comfortable with W-8BEN-E for US clients
- Standard business terms available
Payments
- Wise Business or Revolut Business
- Crypto: USDC/USDT (ERC-20, SOL, TRX)
- Invoices in USD, EUR, or GBP
- Standard contracting terms available