I help Rails teams ship reliable products, fix production fires, and add practical AI without turning the codebase into a science project.

I am the founder of Saeloun, a Ruby on Rails consulting company with teams in Boston and Pune. I work across Rails architecture, upgrades, performance, security reviews, React, private AI workflows, and CTO mentoring for teams that want AI to improve delivery without weakening engineering discipline.

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• Founder and CEO at Saeloun.
• Rails Issues team member.
• Rails Weekly / This Week in Rails co-editor.
• Ruby and Rails open source contributor.
• Organizer of React Pune, Deccan Ruby Conference, and Pune.rb.
• Author of Building Modern Web Applications with React.

• Rails architecture reviews for growing SaaS products.
• Rails upgrades, maintenance, and long-lived modernization work.
• Rails security reviews: authentication, authorization, multi-tenant data access, background jobs, and API boundaries.
• Performance work: slow queries, memory pressure, background jobs, caching, Postgres, and production profiling.
• AI for Rails teams: private AI setup, local LLM workflows, internal LLM wiki, RAG, evals, agent workflows, and PR review loops.
• CTO AI transformation: mentoring engineering leaders, setting up AI coding standards, and making GitHub checks, Copilot, CodeRabbit, CI, tests, and human review work together.
• React, React Native, and product engineering with Rails backends.

• Founder of Saeloun, a Rails and React consulting team.
• Member of the Rails Issues team.
• Top 30 contributor to Ruby on Rails by commits, listed on the Rails contributors page.
• Co-editor for This Week in Rails.
• Long-time contributor to Ruby on Rails and the Ruby ecosystem, including Ruby, Rails, Sinatra, Rack, Arel, Rake, Devise, Dalli, Loofah, Thor, GlobalID, and more.
• Speaker at Ruby and Rails conferences including GoGaRuCo, RedDotRubyConf, RubyConf India, Madison+Ruby, RubyConf Brazil, and RubyConf Philippines.
• Author of Building Modern Web Applications with React.js.
• Organizer of Deccan Ruby Conference and former host of RubyIndia Podcast.

Selected projects and ecosystems I have contributed to:

• Ruby
• Ruby on Rails
• Sinatra
• Rack
• Arel
• Rake
• Devise
• react-rails
• benchmark-ips
• GlobalID

Early open source work included Google Summer of Code contributions to the krypt project. I later mentored in JRuby and Ruby on Rails for Google Summer of Code.

I have spoken at Ruby and Rails conferences across the US, India, Singapore, Brazil, and the Philippines.

• RedDotRubyConf
• Golden Gate Ruby Conference
• RubyConf India
• Madison+Ruby
• RubyConf Brazil
• RubyConf Philippines

I like boring systems that stay fast.

For Rails work, that usually means:

• scope before find
• write a failing test for the bug, not only the happy path
• keep dependencies minimal to reduce upgrade surface
• use Rails conventions until they block delivery
• measure before optimizing
• require CI, review, and deploy checks

For AI work, that means:

• private data stays private
• prompts are code, not architecture
• local/private LLMs when the data or workflow needs it
• evals before broad rollout
• GitHub checks, CodeRabbit, Copilot, CI, and human review all feed the same quality loop
• assistants adapt to team preferences, but never bypass tests or review

• Building a Private Karpathy-Style LLM Wiki With gbrain and gstack
• Rails Authorization Patterns: Pundit, CanCanCan, and Action Policy
• Rails Security Best Practices: A Comprehensive Guide
• Different Approaches to Debugging Query Performance in Rails

If you are a founder, CTO, or engineering lead, send a short note with:

• your Rails version
• team size
• current production pain
• audit type: Rails audit, upgrade, performance, security, private AI setup, or product delivery
• links to logs, traces, PRs, or architecture docs if you can share them

Useful first calls:

• Rails modernization audit
• private AI setup for engineering teams
• AI training and mentoring for CTOs
• Rails security and authorization review
• performance review for slow Rails apps
• product rescue for stuck Rails and React projects

Talk to Saeloun

• GitHub: @vipulnsward
• X: @vipulnsward
• LinkedIn: vipulamler
• Instagram: @vipulnsward
• Saeloun: saeloun.com
• Blog: blog.saeloun.com