Joseph – Node.js, React, Next.js

A large-scale digital platform built for a global travel and tourism company serving 35+ million customers annually.

• Led the implementation of the couponing microservice revamp, reducing failed coupon redemptions by 35% and improving checkout conversion by 2%;
• Worked in a team to build the hotel details page on a platform serving ~35M paying customers annually and operating at billion-scale web & mobile traffic;
• Led several on-prem to AWS cloud migrations, saving the company cost.

An interactive digital showroom platform that enables full-scale, realistic vehicle visualizations without the physical car present, enhancing the customer experience in high-tech retail environments.

• Developed the frontend and optimized the app for both in-browser and configurator rendering;
• Developed the backend server with several performance improvements over MTT 1.0;
• Implemented thorough APM for observability;
• Architected and built cloud infrastructure for the MTT;
• Wrote unit, integration and E2E tests to ensure quality.

A global all-in-one HR platform that helps companies hire, onboard, and manage international teams, covering local payroll, compliance, and company culture. The platform also enables organizations to set up legal entities anywhere in the world, streamlining global expansion.

• Created frontend, backend and cloud architecture for core product features;
• Led a team of 3 to deliver the implementation of a company platform from scratch, covering cloud, database, backend, and frontend systems;
• Improved test coverage of our apps from 50% to 85%, thus improving customer satisfaction;
• Built CI/CD pipelines to ensure consistent, seamless deployments, while increasing developer productivity;
• Remodeled the system to use event-driven architecture over promises for communication, thus reducing error rates by 15%;
• Performed code reviews.

A platform that connects healthcare facilities with tens of thousands of local professionals to fill unstaffed shifts. Professionals can choose shifts, set their own schedules, and get paid immediately after clocking out, while facilities gain instant access to a large, qualified workforce with live ETAs, document verification, and in-app chat - all in one easy-to-use system.

• Led the implementation of the staffing service (core of the product) from scratch;
• Designed the system architecture to support tens of thousands of HCPs operating simultaneously;
• Created the cloud infrastructure in AWS and set up service-specific autoscaling policies;
• Built a robust backend, alongside a team of engineers;
• Built an aesthetic & performant frontend, alongside a team of engineers;
• Set up automated tests and CI/CD pipelines for speedy, high-quality deployments. This improved developer productivity by 20%;
• Implemented thorough APM for observability, reduced debugging time by ~50%.