Lead Ruby Developer

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