Lead Ruby Developer

As a Lead Ruby Developer at Sarvaha, your role involves building, maintaining, and scaling backend systems using Ruby and Ruby on Rails. You will work on designing and implementing scalable APIs using Rails, Grape, and ActiveModel. Tuning performance across the stack, including GC, queries, jobs, and server setups will be part of your responsibilities. Additionally, you will develop, package, and publish custom Ruby gems, as well as optimize ActiveRecord queries & PostgreSQL indices to eliminate N+1 and improve query plans. Managing application servers (Passenger, Thin) and tuning thread/process models will also be crucial. You will own and maintain deployment pipelines, initializers, routing, and Rails engines. Profiling memory usage, monitoring connections, and optimizing worker threads are essential tasks. Furthermore, you will contribute to code reviews, mentoring, and agile development processes, collaborating cross-functionally with frontend and DevOps teams. Key Responsibilities: - 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 Qualifications Required: - 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 If you join Sarvaha, you can expect top-notch remuneration and excellent growth opportunities. You will work in an excellent, no-nonsense work environment with the very best people to work with. The company offers highly challenging software implementation problems and a hybrid work mode, allowing complete work from home even before the pandemic.,