Rails Foundation Contributing Member

Ruby on Rails consulting from engineers who work deep in Rails.

Saeloun helps teams modernize Rails applications, improve performance, untangle production issues, and ship product work with a senior Rails and React team in Boston and Pune.

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606+
engineering articles
2019
founded in Boston
Rails
Foundation member

Latest Rails, React, and engineering articles

Field notes on framework changes, performance, upgrades, testing, and product engineering.

Dec 19, 2025

• authorImg Amol Joshi
authorImg Amol Joshi

Amol is a Senior Software Developer who combines his expertise in Ruby on Rails and VueJS to create highly performant and scalable web applications. He is passionate to explore different technologies and mentor juniors in the web development industry.

Rails 4.2 to 5 A Complete Upgrade Guide

 A practical guide to upgrading from Rails 4.2 to Rails 5 with breaking changes, Ruby version requirements, and migration strategies.

Dec 18, 2025

• authorImg Amol Joshi
authorImg Amol Joshi

Amol is a Senior Software Developer who combines his expertise in Ruby on Rails and VueJS to create highly performant and scalable web applications. He is passionate to explore different technologies and mentor juniors in the web development industry.

Rails 8.1 Structured Event Reporting

 Rails 8.1 adds Rails.event API for emitting structured logs, business events, and telemetry with consistent metadata.

Dec 17, 2025

• authorImg Jijo Bose
authorImg Jijo Bose

I'm a Ruby on Rails and React Native enthusiast with over four years of experience creating innovative software solutions. I work well in teams and am always up for challenging projects. I enjoy playing chess and gaming in my free time.

Rails 8.1 introduces bin/ci to standardize

 Introduces bin/ci, a tool designed to standardize and simplify CI workflows through a new domain specific language (DSL) defined in config/ci.rb.

Dec 12, 2025

• authorImg Amol Joshi
authorImg Amol Joshi

Amol is a Senior Software Developer who combines his expertise in Ruby on Rails and VueJS to create highly performant and scalable web applications. He is passionate to explore different technologies and mentor juniors in the web development industry.

Planning Rails Upgrade - A Strategic Guide

 A practical 5-step guide to planning Rails upgrades with key considerations, essential tools, and proven strategies for a smooth migration.

Dec 12, 2025

• authorImg Syeda Sana
authorImg Syeda Sana

Syeda Sana is a UX designer who loves making products easy and enjoyable to use. She focuses on understanding how people think and designing experiences that just feel right. Her work is all about clarity, simplicity, and a little touch of creativity.

Accessibility Best Practices for Consultancy

 A quick guide to make consultancy websites more accessible, readable, and easier for everyone to use.

Dec 10, 2025

• authorImg Amol Joshi
authorImg Amol Joshi

Amol is a Senior Software Developer who combines his expertise in Ruby on Rails and VueJS to create highly performant and scalable web applications. He is passionate to explore different technologies and mentor juniors in the web development industry.

Rails Composite Primary Keys Evolution

 Explore how Rails evolved to support composite primary keys natively in Rails 8 and migration strategies from the CPK gem.

Dec 4, 2025

• authorImg Amol Joshi
authorImg Amol Joshi

Amol is a Senior Software Developer who combines his expertise in Ruby on Rails and VueJS to create highly performant and scalable web applications. He is passionate to explore different technologies and mentor juniors in the web development industry.

A Guide to Web Application Monitoring

 Learn how to implement effective web application monitoring for Rails and React apps using metrics, logs, and traces to catch problems before they impact users.

Dec 3, 2025

• authorImg Amol Joshi
authorImg Amol Joshi

Amol is a Senior Software Developer who combines his expertise in Ruby on Rails and VueJS to create highly performant and scalable web applications. He is passionate to explore different technologies and mentor juniors in the web development industry.

Non‑Blocking IO.select in Ruby: Introduction

 Fiber::Scheduler#io_select, a dedicated hook that brings scheduler awareness to IO.select

Nov 28, 2025

• authorImg Amol Joshi
authorImg Amol Joshi

Amol is a Senior Software Developer who combines his expertise in Ruby on Rails and VueJS to create highly performant and scalable web applications. He is passionate to explore different technologies and mentor juniors in the web development industry.

Customizing Rails Migration Strategies

 Rails 7.1 introduced a new way to customize how migrations execute — the Execution Strategy API

Nov 27, 2025

• authorImg Syeda Sana
authorImg Syeda Sana

Syeda Sana is a UX designer who loves making products easy and enjoyable to use. She focuses on understanding how people think and designing experiences that just feel right. Her work is all about clarity, simplicity, and a little touch of creativity.

UI/UX Audit Checklist Before Redesign

 Checklist to review your website’s UI/UX before starting a redesign.

Frequently Asked Questions

Why hire Saeloun for Ruby on Rails consulting?

Saeloun is a Rails Foundation Contributing Member with senior Rails engineers who help teams modernize applications, improve performance, fix production issues, and ship product work.

Is Saeloun a Rails Foundation member?

Yes. Saeloun is a Rails Foundation Contributing Member.

Where is Saeloun located?

Saeloun has offices in Boston, MA, USA and Pune, India.

How can I contact Saeloun for Ruby on Rails consulting?

Book a Rails consulting call, visit saeloun.com/contact, email [email protected], or call +19296207865.