Bohdan

Bohdan Kuzmenko
[open contact info](look above in the "contact info" section) · [open contact info](look above in the "contact info" section) · Github · Telegram
Kyiv

GO(GOLANG) DEVELOPER
Go Developer with 2+ years of experience building and supporting high-load production systems. As a
Team Lead Technical Support Engineer, I worked closely with backend services, APIs, logs, and databases
to investigate and resolve complex production issues. I have designed, developed, and maintained Go
applications used in real business workflows. My hands-on experience building resilient services with Go,
REST APIs, Docker, PostgreSQL, Redis, Kafka, and CI/CD pipelines enables me to deliver scalable, high-
performance systems that ensure reliability and drive product growth.

KEY COMPETENCIES
Go (Golang) Docker gRPC
PostgreSQL Git/Github Kafka

PROFESSIONAL EXPERIENCE
NDA Oct 2023 - Present
TeamLead Technical Support Engineer
Led a 24/7 technical support team, coordinating incident response and serving as the primary escalation
point for critical production issues. Ensured SLA compliance, drove root-cause analysis, and worked closely
with engineering and operations teams to improve system stability, documentation, and support processes.
Accomplishments:
Investigated and resolved complex production issues in backend services, REST APIs, databases, and
third-party integrations, analyzing logs, API requests/responses, and database records to identify root
causes.
Identified recurring incident patterns and provided actionable insights for long-term fixes, improving
system reliability and reducing the number of bugs by 20%.
Improved internal documentation and runbooks, reducing average request resolution time by 50%, and
optimized escalation workflows to further streamline support processes.
Developed a Go-based Telegram bot leveraging goroutines for concurrent email processing; actively
used by 15 team members.
Built a Go-based app to validate and compare API behavior across multiple instances, enhancing
testing efficiency.

PET PROJECTS
URL Shortener
Designed and optimized URL microservice responsible for resolving slugs achieving 22,000+ RPS with
p99 < 60ms latency under 700 concurrent clients, using multi-layer caching (in-memory LRU + Redis),
async Kafka producer with batch processing and worker pool
Achieved 80% test coverage with unit and integration tests using testcontainers-go to spin up real
PostgreSQL instances in isolated environments, and implemented end-to-end tests covering the full
application workflow.
Optimized a high-load stats service by redesigning Kafka consumer architecture: implemented batch
processing, and aggregated statistics schema — achieving 110x throughput improvement (150 →
16,400 events/sec)
Github: https://github.com/BohdanKuzmenko1/URLShortener

EDUCATION
Open International University of Human Development “Ukraine” 2022 - 2026
Institute of Computer Technologies – Bachelor’s in Software Engineering

LANGUAGES
Ukrainian — Native
English — Upper-Intermediate