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Иван Зырянов

@0006674

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Ruby on Rails and Go developer who designed polza.diet’s REST API and set up its GitHub Actions CI/CD pipeline.

Uzbekistan

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At polza.diet, I developed features using TDD and DDD principles and standardized the codebase with service objects, serializers, and validation objects. I also designed and implemented a new REST API.

I set up a CI/CD pipeline from scratch using GitHub Actions, covering unit, controller, system, and migration tests. I administered production and staging servers and monitored system stability.

At Интегрированные системы управления (ГК Газпромбанка), I developed microservices within my BPMS domain area and worked on test coverage. I also contributed to aligning requirements with managers and backend and frontend engineers.

Earlier, I developed Redmine plugins and custom enhancements at RedmineUP, and worked as a PHP developer at FL.ru (Free-lance.ru), creating Joomla plugins, HTML layouts, and custom website features.

Experience

Work history, roles, and key accomplishments

Ruby On Rails developer

polza.diet

Oct 2023 - Aug 2025 (1 year 10 months)

- Developed features following TDD and DDD principles, ensuring high-quality, maintainable code
- Refactored and standardized the codebase by implementing unified coding guidelines (service
objects, serializers, thin controllers/models, validation objects, etc.)
- Designed and implemented a new REST API to improve system integration and scalability
- Introduced new gems and upgraded Ruby/Rails

Ruby Ruby on Rails PostgreSQL Redis Linux Docker

golang developer

Интегрированные системы управления (ГК "Газпромбанка")

Feb 2022 - Apr 2023 (1 year 2 months)

- Developing microservices within my BPMS domain area.
- Test coverage of the code.
- Actively communicated with managers, backend and frontend engineers to align requirements.

Go RabbitMQ Clean Architecture Scrum PostgreSQL Microservices Docker Docker Compose

golang developer

ELMA365

Oct 2021 - Dec 2021 (2 months)

- collaborated on developing microservices within a specific domain

Go Microservices MongoDB

Career transition

Career Break

May 2016 - Aug 2021 (5 years 3 months)

I was engaged in fields outside of IT:
– Legal consultant
– Programming instructor
– Not employed for a period of time

Ruby on Rails developer

RedmineUP

Mar 2015 - Apr 2016 (1 year 1 month)

- Developed commercial plugins for the Redmine CRM system to extend functionality and improve
customer workflows( plugins: people, agile, invoices etc... )
- Developed custom Redmine enhancements for international clients.
- Supporting existing plugins and adapting them to new versions of Ruby(on Rails) and Redmine

Ruby Ruby on Rails JavaScript MySQL PostgreSQL

php developer

FL.ru (Free-lance.ru)

Jan 2011 - Jan 2015 (4 years)

I worked as a PHP developer.
I developed and customized plugins for the Joomla CMS, created HTML layouts, and implemented custom website features.
My profile
https://www.fl.ru/users/kravcneger/portfolio/