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Hi, I'm Andrei Kislichenko, a Senior Backend Engineer specializing in Ruby on Rails and API development. I love turning complex data problems into scalable, reliable systems. I have extensive experience in database optimization, ETL pipelines, automated testing, and contributing to open-source projects. I enjoy collaborating with cross-functional teams to deliver production-grade backend services.…Hi, I'm Andrei Kislichenko, a Senior Backend Engineer specializing in Ruby on Rails and API development. I love turning complex data problems into scalable, reliable systems. I have extensive experience in database optimization, ETL pipelines, automated testing, and contributing to open-source projects. I enjoy collaborating with cross-functional teams to deliver production-grade backend services.

Andrei Kislichenko

Back-End Developer, Developer, Full Stack Developer, +2

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Hi, I'm Andrei Kislichenko, a Senior Backend Engineer specializing in Ruby on Rails and API development. I love turning complex data problems into scalable, reliable systems. I have extensive experience in database optimization, ETL pipelines, automated testing, and contributing to open-source projects. I enjoy collaborating with cross-functional teams to deliver production-grade backend services.…Hi, I'm Andrei Kislichenko, a Senior Backend Engineer specializing in Ruby on Rails and API development. I love turning complex data problems into scalable, reliable systems. I have extensive experience in database optimization, ETL pipelines, automated testing, and contributing to open-source projects. I enjoy collaborating with cross-functional teams to deliver production-grade backend services.

Available to hire

Hi, I’m Andrei Kislichenko, a Senior Backend Engineer specializing in Ruby on Rails and API development. I love turning complex data problems into scalable, reliable systems.

I have extensive experience in database optimization, ETL pipelines, automated testing, and contributing to open-source projects. I enjoy collaborating with cross-functional teams to deliver production-grade backend services.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at GlobalLogic

May 20, 2025 - Present

Collaborated with Cisco team to build a Web/API dashboard for network device management. Improved bulk API action performance 10x via SQL query optimization and refactoring. Enhanced test coverage and code quality through RSpec testing and code reviews.

Ruby on Rails Developer at Independent Contractor (Remote)

June 1, 2015 - March 1, 2019

Built and maintained multiple Ruby on Rails apps for U.S. and Swiss clients. Notable projects included API development, ETL pipelines, and open-source contributions to Portus. Helped design data models and streamlined deployment pipelines.