Julia Kafarska

Owns user-facing UI and public APIs for Trustpilot's review platform, serving 60M+ monthly active users. Engineers distributed services on AWS ECS with event-driven messaging and multiple databases.

Delivered four client products end to end as a fullstack engineer, owning frontend, backend, and production release. Clients included Quinn, Rockefeller Center Skylift, Domino Park, and Aviation Institute of Maintenance.

Owned end-to-end architecture and technical strategy for a real-time multiplayer gaming platform. Designed AWS infrastructure for high-load gameplay and set CI/CD and engineering standards.

Led a team of 30+ engineers building a multiplayer gaming experience, focusing on performance and player engagement. Architected scalable services on AWS and introduced Kafka for real-time data streaming.

Built backend services in Node.js and PostgreSQL, with Redis powering real-time game features. Developed React and Redux frontend over REST and WebSockets, and built the Storybook component library.

Built the frontend of a fintech platform for the home services industry, connecting service professionals with customers and dispatching jobs. Delivered real-time job updates using Socket.io and Node.js/Express REST APIs.

Built web applications for Automatic Content Recognition (ACR) and real-time video detection, turning unstructured video into searchable metadata for media and government clients. Developed real-time interfaces for large-scale video analysis.

Built a blockchain games-ecosystem platform, delivered to specification and on schedule.

Built a Vue.js application and Node.js CLI for versioning hearing-device hardware components, giving engineering teams one place to track changes.

Built interactive WebGL viewers for 360° street-level imagery and LiDAR data in Street Smart, used by urban planners and government bodies. Implemented GIS mapping features.

Developed frontend solutions using Angular, React, D3.js, Node.js, and PHP.

Developed internal HR applications as an on-site subcontractor.

Developed a hiring platform using Angular, Node.js, Sails.js, PHP, MySQL, and AWS (S3, EC2).

Developed government software (SIDAS) using PHP and PostgreSQL.

Developed WordPress themes and plugins.

Developed and administered a hosting platform and client dashboard using PHP, MySQL, and Linux.

Studied Physics at the University of Gdańsk from 2011 to 2013.

Studied Accounting at Cossinus in Gdynia from 2008 to 2009.

Earned a vocational diploma in Information Technology from Vocational High School No. 1 in Wejherowo from 2004 to 2008.