Case Studies | Ivan Kulagin, Full-Stack Developer

Lead Ruby Backend Developer and DevOps Engineer2013-10 – 2015-03

Skymond mobile Op

Online Charging System (OCS) for virtual mobile operator

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Lead Rails Fullstack Developer + DevOps engineer2022-10 – 2024-06

Frigbot (IoT)

Legacy Rails code refactoring, telecom integrations, high-load IoT cloud built

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Elm and Hanami Full Stack Developer2020-08 – 2020-10

AVR Chiptuning

Frontend (Elm) and backend (Hanami API+dry) development

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Lead Backend Developer (High-Performance APIs)2016-03 – 2018-06

spINFLUENCEit

Complex backend for iOS and macOS applications

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DevOps Architect (AWS/Terraform/HashiCorp Stack)2020-05 – 2020-08

BlockVestMovement

Multi-environment AWS stack design and implementation, CI setup

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Ruby Backend Engineer2015-07 – 2015-09

Instamotor Inc.

Refactoring and extending communication layer using Twilio API

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Apple Passbook/AngularJS/Rails Full Stack Developer2015-03 – 2017-07

Apple Pass™ visual designer

Apple pass WYSIWYG designer with passbook API integration

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Rails Fullstack Developer2013-10 – 2015-03

Higgins MD 420

Refactoring and developing website for medical marijuana evaluation clinic

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Backend Rails Developer2013-04 – 2013-08

Pelesend corporate site

Refactoring and UI improvements of Pelesend corporate site

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Full Stack Ruby on Rails Developer2013-01 – 2013-06

ABC Logistik

Regular complexity site for Russian logistic company

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