About Vitalii
I help startups and scaleups design, stabilize, and scale backend platforms.
I am a Senior Backend & Platform Engineer with 9 years of experience building high-load and high-resilience systems at Revolut, Pinterest, Form3, Cowbell Cyber, and Ajax Systems.
My strongest areas are backend architecture, distributed systems, database scalability, CI/CD platforms, Kubernetes/AWS infrastructure, PostgreSQL/MySQL/CockroachDB, Go, Java/Kotlin, LLM, and production AI-agent integrations.
I usually help clients with:
- Backend architecture reviews
- PostgreSQL and database scalability
- Kubernetes / AWS / CI/CD consulting
- High-load and high-resilience system design
- Zero-downtime migrations
- Observability and production reliability
- AI-agent integration into internal workflows
- Technical leadership for small engineering teams
I am most useful when a company needs strong backend and platform engineering: either building a new product from scratch with the right architecture from day one, or scaling an existing product when the backend, infrastructure, database, or deployment process starts to limit growth.
I prefer practical consulting: clear diagnosis, concrete technical proposals, and implementation support when needed.
English
Native or bilingual
Ukrainian
Native or bilingual
Remote only
Primarily works remotely
Experience
- RevolutSenior Software EngineerBANKING AND INSURANCEFebruary 2025 - Today (1 year and 4 months)Valencia, SpainTechnologies: Java, Postgres, LLM, AI Agents, Kubernetes, Docker, PythonRole: Enhanced and maintained FinCrime Fraud Reporting and ML Ops platform.Achievements:
- Designed FinCrime Investigation Unit reporting system to financial regulators
- Designed and implemented AI Agent which improved the FinCrime review process.
- Participated in the AI Agent development to reduce headcount.
- Optimized Postgres by migration to multipartition setup with zero downtime.
- Participated in the initial design and implementation of the Data Layer platform which unified data access across the department.
- PinterestSenior Software EngineerTECHJanuary 2024 - February 2025 (1 year and 1 month)Toronto, CanadaTechnologies: Java, Kotlin, Go, Python, AWS, DevOp, Spinnaker, Terraform, Kubernetes,MySQL, Docker, GitHub ActionsRole: Enhanced and maintained continuous delivery platform.Achievements:
- AWS Multi-Account Support - As part of the CD platform team, I designed and implemented a multi-account feature that enhanced system security, observability, and maintainability by supporting deployments across multiple AWS accounts.
- Spinnaker Keel Optimizations - I implemented MySQL database optimizations for Spinnaker Keel, resulting in a 4x increase in the number of supported applications and significantly improving platform scalability.
- Form3Senior Software EngineerBANKING AND INSURANCEFebruary 2023 - January 2024 (11 months)Toronto, CanadaTechnologies: Go, NATS, Kubernetes, CockroachDB, Docker, AWS, GCP, DevOps, GitHub ActionsRole: Enhanced and maintained high-load and high resilient system. Partially took on the role of architect.Achievements:
- System Stability Enhancements - Led initiatives to improve system stability at Form3, proposing and implementing solutions that increased observability, prevented data loss, and optimized processing times.
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Education
- Master's degreeNational Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"2020Master's degree in Electronics
- Bachelor's degreeNational Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"2019Bachelor's degree in Electronics
Certifications
- Go: The Complete Developer's Guide (Golang)Udemy2022