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Hari Kishor Singh

@harikishorsingh

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Back-end developer specializing in Ruby on Rails, clean code, and scalable server-side systems.

India

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What I'm looking for

I am seeking back-end or platform roles where I can build scalable server-side systems, write clean code, and grow within collaborative teams.

I am a back-end developer with strong experience in Ruby on Rails, object-oriented design, and writing clean, readable Ruby code.

I have implemented server-side templating, CSS preprocessors and worked with databases such as MySQL and PostgreSQL while using tools like Git, RSpec and Sidekiq.

My professional history includes roles from Software Developer to Senior Application Developer and Platform Engineer, contributing to production systems and microservices architectures.

I focus on maintainable server-side solutions, practical testing practices, and collaborative development to deliver reliable, scalable applications.

Experience

Work history, roles, and key accomplishments

Engineer, Platform Engineering

Apexon

Aug 2024 - Jun 2025 (10 months)

Worked on platform engineering initiatives focusing on backend services and tooling using Ruby on Rails and related libraries; contributed to reliability and deployment workflows across environments.

Ruby Ruby on Rails Sidekiq RSpec Git PostgreSQL MySQL CI CD RESTful APIs

Senior Application Developer

TELUS International

Aug 2021 - Aug 2024 (3 years)

Delivered backend application development and maintenance, implemented RESTful APIs and improved application performance across services using Ruby and associated tooling.

Ruby Ruby on Rails MySQL PostgreSQL RESTful APIs Git JavaScript ORM

Associate Software Engineer

Chetu, Inc.

Sep 2019 - Jul 2021 (1 year 10 months)

Developed and supported web applications using Ruby on Rails stack, participated in feature development, bug fixes, and code reviews to improve code quality and delivery velocity.

Ruby Rails HTML5 CSS3 JavaScript AJAX Git JSON

Software Developer

GemsEssence Infotech Pvt Ltd

Jul 2015 - Aug 2019 (4 years 1 month)

Built web application features and integrations using Ruby on Rails and front-end technologies, and maintained databases and server-side templating for client projects.