Nikita Sinenko

About Me

I'm a software engineer based in Dubai, specializing in Ruby on Rails development with a focus on performance optimization and user experience.

What I Do

I work with Ruby on Rails applications, helping companies optimize their systems for better performance and user experience. Most of my time is spent on database optimization, improving API response times, and building frontend interfaces with Vue.js and Hotwire.

Performance engineering is where I spend most of my focus - making applications faster through query optimization, caching strategies, and infrastructure improvements. I also work on the frontend, building interfaces that are responsive and easy to use.

Background

I work on Rails applications across SaaS, e-commerce, internal tools, financial platforms, and healthcare. Most engagements start with a performance problem - slow queries, queue backlogs, API response regressions - and expand into architecture work once the immediate pain is addressed.

Based in Dubai, working remotely with clients across all time zones. I stay close to the Rails ecosystem - Rails 8 production stack (Solid Queue, Solid Cache), Hotwire, PostgreSQL internals, and modern deployment with Kamal 2.

Technical Focus

Backend

Ruby on Rails, PostgreSQL, Redis, background jobs, API design

Frontend

Vue.js, Hotwire (Turbo & Stimulus), Tailwind CSS

Performance

Database query optimization, caching, CDN, infrastructure scaling

Industries

SaaS, E-commerce, FinTech, Healthcare