Senior Software Engineer (Ruby)

Why Join Exadel  We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks. From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.What powers it all? Our people are ambitious, collaborative, and constantly evolving. About the Client   The company has been building solutions for mobile apps, effortless payment, business travel, and advertising since 1992. The customer is developing a mobility platform that allows operators to manage their vehicles and drivers efficiently, regulators to be informed and establish guidelines, service providers to deliver sustainable solutions, and riders to have an effortless transit experience. Project Team  The project is a taxi ordering service. The user can hail a taxi, monitor an ordered taxi, pay for a ride, and see trip history. The system contains the following components: Ride server (all data processing); Payment server (PCI DSS-compliant), which performs a transaction with the passenger's digital wallet and payment gateways; Mobile application (hail taxi, geocoding, map, payments); Taxi terminal (3rd party). The project integrates with 3rd party services, including PayPal, MasterPass, Stripe, and Twilio. Team: 1 Team Lead, 1 UI Developers, 6 Back-End Developers, 9 Mobile Developers, 5 QA, 2 BA and 2 Designer. What You’ll Do   Hands-on Development & Automation: Write real code for autoscaling, internal tooling, and operational automation Application Performance & Reliability: Improve the overall performance, scalability, and reliability of our applications Database & Infrastructure Optimization: Work directly on database optimization, containerized environments, and continuous delivery CI Automation: Enhance automated CI processes and development pipelines AWS & Container Management: Main