Lead Ruby Developer

Sarvaha Systems; Pune District; On-site; INR 1,500,000 - 2,100,000; Full time

Job summary

Sarvaha Systems is looking for a Lead Ruby Developer with 7+ years of hands-on Ruby and backend architecture experience to build high-performance systems. You will design scalable APIs using Rails, Grape, and ActiveModel, tune the stack, and mentor peers in a fast-moving Agile environment.

You will own deployment pipelines, memory profiling, and optimization of ActiveRecord queries, while collaborating with frontend and DevOps teams to deliver robust software.

Qualifications

• Hands-on Ruby development with emphasis on backend engineering.
• Strong understanding of Rails internals and architecture.
• Experience with performance tuning and scalable systems.

Responsibilities

• Build and scale backend systems using Ruby and Rails
• Design scalable APIs with Rails, Grape, and ActiveModel
• Tune performance: GC, queries, jobs, and server setup
• Develop, package, and publish Ruby gems
• Optimize ActiveRecord queries and PostgreSQL indices
• Manage application servers (Passenger, Thin) and tune models
• Own deployment pipelines, initializers, routing, Rails engines
• Profile memory usage and monitor connections
• Contribute to code reviews, mentoring, and Agile processes
• Collaborate with frontend and DevOps teams

Skills

Ruby programming

Backend architecture

Code reviews

Agile development

Mentoring

Education

BE/BTech/MTech (CS/IT) or MCA

Tools

Rails

Grape

PostgreSQL

ActiveRecord

Passenger

RVM

rbenv

rubygems

Bundler

Job description

About the job

Sarvaha is seeking a skilled and passionate Lead Ruby Developer with a minimum of 7+ years of hands‑on experience in Ruby and backend architecture. Youll work on challenging, high-performance systems and collaborate with a talented team that values quality, ownership, and clean code.

What Youll Do

• Build, maintain, and scale backend systems using Ruby and Ruby on Rails


• Design and implement scalable APIs using Rails, Grape, and ActiveModel


• Tune performance across the stack including GC, queries, jobs, and server setups


• Develop, package, and publish custom Ruby gems


• Optimize ActiveRecord queries & PostgreSQL indices to eliminate N+1 and improve query plans


• Manage application servers (Passenger, Thin) and tune thread/process models


• Own and maintain deployment pipelines, initializers, routing, and Rails engines


• Profile memory usage, monitor connections, and optimize worker threads


• Contribute to code reviews, mentoring, and agile development processes


• Collaborate cross-functionally with frontend and DevOps teams

You Bring

• BE/BTech/MTech (CS/IT or MCA), with an emphasis in Software Engineering


• Minimum 7 years of professional Ruby development experience


• Strong proficiency in Ruby (language internals, idioms, meta-programming)


• Deep knowledge of thread vs process models, connection handling, worker tuning & memory profiling


• Deep knowledge of OOP principles, mixins, blocks, procs, and lambdas


• Solid grasp of Rails internals: ActiveRecord, ActiveJob, ActionCable, validations, callbacks, etc.


• Experience with PostgreSQL and advanced ActiveRecord tuning


• Proficient in using Bundler, Rake, Rubygems, and gem building


• Comfortable with tools like RVM, rbenv, and chruby

Needed Soft Skills

• Strong debugging and troubleshooting skills


• Ownership mindset and accountability


• Comfortable working in Agile teams and pair programming


• Proactive in documentation and sharing knowledge


• Empathetic collaborator and open to mentoring peers


• Passion for clean code, performance, and continuous improvement