Abdulla Achilov
Senior Software Engineer
Back-End - Ruby on Rails - ElasticSearch - MongoDB - AWS - GCP - Postgres
Warsaw, Poland
About
Senior Software Engineer with 12+ years of experience in web development, DevOps, CI/CD, and data analysis. As a Technical Lead at Apollo.io, designed, developed, and deployed scalable and secure web applications using Ruby on Rails, MongoDB, ElasticSearch, AWS and GCP. Mastery in both SQL and NoSQL databases - manage, optimize, and architect solutions for databases over 6 PB. Experienced in designing scalable CI/CD architectures and implementing automation that enhances development speed and code quality. Strong advocate for Test-Driven Development, ensuring high-quality, maintainable, and performance-optimized code.
Core Expertise
Professional Experience
- Ruby engineer working with Microsoft Azure and AWS cloud infrastructure
- Remote position based in Warsaw, Poland
- Strategically led key feature development, boosting product capabilities and driving a 60% increase in customer adoption, directly contributing to sales growth
- Pioneered database optimization, enhancing system performance and achieving a 12% reduction in operational costs by refining query efficiency and resource utilization
- Based on NewRelic metrics, investigated and refactored code slashing user interaction times by 40 seconds, freeing up over 17 hours of customer time daily
- Crafted a comprehensive Engineering Roadmap, reducing cycle times from concept to engineering to just two weeks
- Led weekly meetings leveraging MVP principles to prioritize deliverables, ensuring timely product iterations
- Transformed the CI pipeline, achieving 600% faster test suite execution by pioneering effective parallelization strategies and implementing Cypress on Currents
- Overhauled payment services, orchestrating a strategic transition to a more robust architecture that boosted error tracking and expanded test coverage, reducing average error detection time by 1.7 days
- Mentored junior developers through pairing sessions and code reviews, reducing onboarding time from 3 to 2 weeks
- Complete rework of review apps, reducing setup time from 30+ to 9 minutes, allowing QA engineer inclusion in each PR
- Co-owned and developed a real estate portal for the Estonian market
- Ruby on Rails development with AWS infrastructure engineering
- Architected large-scale solutions with scalability focus in a startup environment with frequently changing requirements
- Legacy code modernization and data processing with Sidekiq
- Leadership in API - React integration and AWS deployment in SOA architecture
- Full-stack Ruby on Rails development over 4.5 years
Notable Projects
Dishle
Wordle for Dishes
A fun word-guessing game inspired by Wordle, themed around dishes and cuisine. Players guess the daily dish name with visual feedback on each attempt.
TripWatchDeal
Travel Monitoring Application
Real-time travel monitoring and itinerary management system. Features automated alerts, booking integrations, and collaborative trip planning.
ByZoneCraft
Developer Platform
Platform for building and shipping hobby projects fast. Provides infrastructure tooling, deployment pipelines, and project scaffolding.
Claude-Approver
AI Workflow Automation Tool
npmjs.com/claude-tg-approver-and-chat
Developer tool for managing AI-assisted code review and approval workflows from Telegram chat. Automates permission management and integrates with CI/CD.
Education
Master Engineer
Moscow Technical University of Communications and Informatics