Lubomir – Node.js, React, Next.js

A company dedicated to helping the world travel with ease and confidence. They collaborate with the world's leading payment networks, over 1,400 banks, 90 airlines, and 20 hotel groups worldwide. Their expertise spans Loyalty, Lifestyle Benefits, Insurance, and Assistance, providing valuable insights into affluent consumers and frequent travelers.

• Maintained the Apollo GraphQL APIs and the internal communication between the different microservices.
• Developed and maintained the booking service.
• Worked on the integrations with Visa, Mastercard, and American Express that allowed their business customers to book airport lounges all around the world.
• Innovated features that elevated travelers’ airport experiences, from personalized lounge recommendations to real-time availability updates.
• Optimized backend systems to handle high traffic volumes during peak travel seasons, ensuring reliability and responsiveness.
• Used Test-Driven Development (TDD). Wrote comprehensive integration and unit tests, guaranteeing code quality, robustness, and adherence to business requirements.

A B2B platform that provides reliable and insightful purchase intent data for sales and marketing teams. Purchase intent data is the information that indicates how likely a potential customer is to buy a product or service from a vendor. By using the platform, sales and marketing professionals can access and leverage this data to target their ideal prospects, personalize their messages, and increase their conversions.

• Managed the whole development process and led the development team;
• Prioritized and managed tasks using Agile methodology;
• Created processes that allowed us to ship fast (they were deploying more than 30 times a day thanks to the robust CI/CD pipeline that they had);
• Developed a full-stack application with authentication, OAuth Sign up, billing system, invoicing, Dashboard, user and team management, etc.;
• Utilized Next.js, TypeScript, Next-Auth, tRPC, Prisma ORM, PostgreSQL, Redis, BullMQ, Stripe, Tailwind CSS;
• Deployed the application using GitHub Actions, Docker, and render.com

A platform similar to OnlyFans that allows models to upload photos and videos and share them with their fans.

• Integrated the front-end with GraphQL using websockets as the transport layer.
• Led the front-end team and facilitated effective communication and hand-offs with the other teams;
• Oversaw the development of Playboy’s progressive web app (PWA) based on Next.js, which increased site traffic by 37% and user retention by 25%;
• Integrated Playboy’s Ruby on Rails backend with the web app, ensuring smooth data transfer and secure authentication;
• Ported features from an existing Vue.js/Java app after PLBY Group Inc. acquired a competitor, which saved time and resources and enhanced the user experience;
• Communicated regularly with the Product Owners, providing feedback and updates on the project status and issues.

A company that builds and develops sustainable urban homes in California that can be completely customized by their customers.

• Implemented a 3D/360° interior visualizer that allowed clients to customize and see how their property would look before they purchase, which increased user retention by 60%;
• all the interior scenes we rendered using Unreal Engine 5 were hosted on a powerful GPU box on the Google Cloud Platform;
• the 3D viewer was entirely server-driven, using structured ProtoBufs and Web sockets for communication with the Golang backend.

A cloud and telecom operator that simplifies and optimizes communication and collaboration services for businesses. It offers a complete and innovative catalog of solutions, such as telephony, internet, cloud, security, and office 365, that can be customized and managed through a unique and user-friendly platform called Sophia. Sophia is a SaaS tool that allows users to control and monitor all their services in a centralized and automated way. Sophia also provides access to API, SSO, and customization features, as well as support and training resources.

• Integrated the front-end with GraphQL.
• Designed a UI interface that enabled customers to manage their telecommunications services easily and efficiently;
• Developed an interface that allowed customers to check internet availability based on their location, either by entering their address or using GPS coordinates;
• Contributed to a global billing system that handled all of its customer’s transactions securely and accurately.