Engineering Lead · Ukraine · Remote / EU

I grow engineering teams and modernize the platforms they build. 

8+ years turning enterprise software into faster, safer, better-run systems — across Retail, FinTech and Oil & Gas. Hands-on architecture meets people development and engineering enablement.

Vasyl Khanas, Engineering Lead
Open to opportunities

Selected work

Platforms shipped, teams grown.

From founder-built products to enterprise platforms under NDA — the through-line is architecture, delivery and the engineering practices that make them last.

M-CommerceNDA

Enterprise M-Commerce Platform

Engineering Lead · Retail / M-Commerce

An enterprise mobile-commerce platform serving high transaction volumes. Client under NDA — details kept high-level.

JavaSpring BootSpring CloudHibernate
Payment Gateway

Delasport

Technical Leader & Backend Engineer · FinTech

A payment platform intended as the technical foundation for payment processing across multiple internal products — taken from proof-of-concept to a production-ready first release.

JavaSpring BootREST APIsMicroservices
Enterprise SaaS

Sombra

Java Developer → Team Lead · Sales / E-commerce

An enterprise SaaS platform powering a rapidly growing business. Progressed from development into architecture, technical leadership and stakeholder engagement over 2.5 years.

JavaSpring BootSpring CloudHibernate
E-commerce

Marketly

Co-founder & CTO · Retail

A cloud-native retail automation platform helping small and medium businesses digitize and automate day-to-day operations — owned end-to-end from product discovery to production.

JavaSpring BootSpring CloudRabbitMQ

Impact in numbers

Measurable outcomes, not job titles.

A snapshot of recent engineering and leadership impact — modernization, reliability, enablement and the people grown along the way.

8+

Years in enterprise software & leadership

15

Engineers led on an international backend team

25+

Java repositories modernized (JDBC → R2DBC)

60%

Faster service startup for distributed systems

4,000+

Engineers using the Claude Certified Architect platform

30,000+

Practice sessions on the internal AI certification platform

~1,000

Certifications supported

99.6%

Platform availability sustained

50%

Faster critical vulnerability resolution

500 GB

Production data migrated to newer Kafka brokers with zero downtime

40+

Senior / Lead interviews conducted

5

Engineers mentored as Resource Manager

AI

Facilitator in the AI Engineer Program at EPAM

2

Internal platforms (Interview & Skills) audited and improved for developer growth

AI certifications earned in 2026: Anthropic Claude Architect Foundations and Certified Partner Specialist — Gemini Enterprise Agent Development

About

I'm an Engineering Lead with 8+ years across Retail, FinTech and Oil & Gas — helping engineering teams grow, improving how they work, and driving technical excellence.

My background combines hands-on software engineering with technical leadership, people development and engineering enablement. I care about impact beyond individual features: the practices, platforms and people that make a whole team faster and more reliable.

Recently that has meant modernizing 25+ Java repositories from blocking JDBC to reactive R2DBC, cutting service startup times by 60%, and building an internal AI certification platform now used by 4,000+ engineers with 30,000+ practice sessions.

Engineering Enablement

Raising productivity, quality and AI adoption through tooling, practices and platforms — impact that reaches far beyond a single feature.

Technical Leadership

Leading international teams of up to 15 engineers: architecture, testing, delivery and production ownership, done to a consistently high standard.

People Development

Career development management, mentoring, and hiring — 30+ Senior/Lead interviews and engineers grown into leadership roles.

Platform Modernization

Driving large-scale modernization: reactive migrations, faster startups, cloud-native rearchitecture and measurable reliability gains.

Tech stack

The tools I build and lead with.

A working command of the modern JVM backend, distributed systems, cloud-native delivery — and, increasingly, applied AI engineering.

01/Languages

J8Java (8–25)
SQSQL

02/Backend & Frameworks

Spring Boot
Spring Framework
Spring WebFlux
AKAkka
GRgRPC
JDJDBC
Hibernate
JOJOOQ

03/Architecture & Distributed Systems

MOMonolith
MIMicroservices
EAEvent-Driven Architecture
ESEvent Sourcing
CQCQRS
SASAGA
OPOutbox Pattern
DLDLQ
RSReactive Systems
REREST

04/Cloud & DevOps

AZAzure
AWAWS
GCP
Kubernetes
Docker
Docker Compose
Helm
ArgoCD
Jenkins
CICI/CD

05/Messaging

Kafka
RabbitMQ
PRProtobuf

06/Databases

PostgreSQL
JAJanusGraph
TimescaleDB
MongoDB
Redis
MySQL
MSMSSQL

07/Testing & Quality

JUnit
MOMockito
TETestcontainers
MSMock Servers
TDTDD
SOSonarQube
MEMend
Snyk
Trivy

08/Tools

Git
Maven
Gradle
Jira
Confluence
Swagger/OpenAPI
Linux

09/AI Engineering

PRPrompting
SDSpec Driven Development
Claude Code
AGAgents
SKSkills
WOWorkflows
RARAG
MCMCP
BMBank Memory
TBToken Budgeting
RAResponsible AI

Contact

Let's build something excellent.

Happily engaged full-time, but always glad to connect with good people and hear about the right opportunity in engineering leadership, management, developer experience or distributed-systems architecture. The best way to reach me is email or LinkedIn.

+38 063 274 9582Ukraine · Remote / EU