My name is Zhenya Mamenko

My name is Zhenya Mamenko

I build practical software where product, backend systems, and data meet. I like turning ambiguous workflows into clear tools, making data useful without making it mysterious, and keeping systems understandable enough to evolve. I am also a Certified ClickHouse Developer and studied the Statistics and Data science Micromasters program at MIT Learn.

Product-minded I care about the shape of the problem, not only the shape of the code.
Data fluent I enjoy the space between raw events, clean models, and decisions people can trust.
Systems aware I like software that stays readable, observable, and calm when it has real users.
Backend and product systems

Services, workflows, and interfaces that keep the user's task clear while the machinery behind them stays dependable.

Data work that becomes useful

Pipelines, models, validation flows, dashboards, and analytical layers that help teams see what is actually happening.

Technical translation

Connecting product questions, engineering tradeoffs, and data signals without losing the practical thread.

Data and analytics

ClickHouse, BigQuery, SQL, Tableau, Power BI, product analytics, A/B testing, cohort analysis.

Application work

Full-stack product development, backend services, practical UI, automation, and integration-heavy features.

Infrastructure

GCP, AWS, Docker, Kubernetes, Terraform, ETL/ELT, and the operational habits that keep systems understandable.

AirPlain
GitHub

Android app for storing actual and past flight data, with flight details, boarding passes, statistics, achievements, and optional API integrations.

Sip Happens
GitHub

Android home-screen widget for tracking drinks: set a limit, tap to count, watch the glass fill up, and get notified when it is time to slow down.

Asset Allocation Application (AAA)
GitHub

Self-hosted application for passive asset allocation: maintain dictionaries, create allocation structures, monitor portfolio status, and calculate rebalancing.

kanGO — Fast hops for long pages
GitHub

Chrome extension for quickly navigating long web pages by adding custom hops, managing them in a sidebar, and jumping to key sections.

EditableTable
GitHub

Vue 3 and Vuetify 3 editable table component for web applications, with configurable columns, validation, events, and customizable styles.