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CV

Denis Erofeev · Senior Ruby on Rails developer

Backend developer with 19 years 7 months in the profession. Core stack is Ruby (Rails, Hanami), plus Go. I design APIs, work with databases under load, build asynchronous integrations, and grow legacy codebases instead of fearing them.

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Skills

Languages
  • Ruby
  • Go
  • JavaScript
  • SQL
  • Shell
Frameworks
  • Ruby on Rails
  • Hanami
  • RSpec
  • React
  • jQuery
Data & queues
  • PostgreSQL
  • MySQL
  • MongoDB
  • Redis
  • Elasticsearch
  • Sphinx
  • Kafka
  • RabbitMQ
Infrastructure
  • Linux (Ubuntu, Debian, Red Hat)
  • Docker
  • Kubernetes
  • Git

Experience

  1. November 2024 — present 1 year 10 months

    Konsol.Pro

    Senior backend developer

    Russia

    A platform for hiring self-employed contractors: tasks, document flow, instant payouts and tax risk control.

    • Fintech integrations: bulk payouts to contractors via instant payments and partner banks
    • Tax service integration: a receipt for every payout, income limit checks
    • Public API for corporate clients and integrations with their systems
    • Platform core and performance: tasks, contractor onboarding, database under load, background jobs
  2. December 2022 — November 2024 2 years

    RTK IT concurrent

    Senior backend software engineer

    Moscow, Russia

    A smart home platform: devices, automation scenarios, mobile apps.

    • Designed and built microservices for the complex parts of the product
    • Integrated those microservices with the monolith
  3. August 2021 — November 2024 3 years 4 months

    igooods concurrent

    Senior backend software engineer

    Saint Petersburg, Russia

    A grocery delivery service.

    • Fintech integrations: payouts through Rocketbank, Tinkoff and other banks
  4. April 2021 — July 2021 4 months

    Soft Project

    Senior software engineer

    Moscow, Russia

  5. August 2017 — April 2021 3 years 9 months

    OneClass

    Fullstack Ruby on Rails developer

    Toronto, Canada

    A Canadian edtech startup with study materials for students.

    • A wide range of Rails work, from business logic to legacy maintenance
    • Focused interface work in React
  6. August 2016 — August 2017 1 year 1 month

    ABAK-PRESS

    Fullstack Ruby on Rails developer, DevOps engineer

    Yekaterinburg, Russia

  7. December 2015 — August 2016 9 months

    ITBeaver

    Fullstack Ruby on Rails developer

    Perm, Russia

  8. February 2007 — December 2015 8 years 11 months

    Volgogradenergosbyt

    Lead programmer

    Volgograd, Russia

Education

  1. 1999 — 2004

    Volgograd State Technical University

    Faculty of Electronics and Computer Engineering

    Volgograd, Russia

    • BSc: automated information processing and control systems
    • Engineer: computers, systems and networks

Continued education

  1. April 2024 — September 2024

    Software Architect

    Skillbox

    • Architectural styles, distributed architecture, monolith refactoring
    • Functional and non-functional requirements, API design
    • Transaction management, event-driven work, integration
    • Service discovery, configuration, security, API gateway
    • Infrastructure and runtime, observability, cloud native

Communities

  1. May 2011 — present

    GitHub

    4781 contributions across 19 repositories: Ruby, JavaScript, Go, SCSS, Shell

About

I design and grow the server side of web applications: APIs, business logic, integrations, data access and background processing.

Frontend — React, jQuery, HTML5, CSS — when the interface needs support or extending.

I can take services to production and keep them there: designing APIs, working with databases under load, building asynchronous integrations, and making sense of legacy code. I take part in open source.

Get in touch

Email
edenisn@gmail.com
Telegram
@edenisn
GitHub
github.com/edenisn
Habr Career
career.habr.com/erofeevdn