Julia Kafarska

Software Engineer III

Trustpilot

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.

ReactTypeScriptNodeJS.NETAWS ECSAWS SQSAWS SNSDynamoDBDocumentDBMongoDBDistributed SystemsEvent Driven Architecture

Senior Software Engineer

Big Human

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.

ReactNext.jsReact NativeTypeScriptJavaScriptHTML5CSSSASSTailwindNodeJSREST APIsGraphQLHeadless CMS

Principal Software Engineer

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.

AWSKafkaNodeJSPostgreSQLRedisReactReduxMaterial UIRESTWebSocketsStorybookCI CD

Technical Lead

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.

AWSKafkaNodeJSPostgreSQLRedisReactReduxMaterial UIRESTWebSocketsStorybookCI CDTechnical LeadershipMentorship

Senior Software Engineer

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.

AWSKafkaNodeJSPostgreSQLRedisReactReduxMaterial UIRESTWebSocketsStorybookCI CD

Senior Frontend Developer

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.

ReactReduxRedux SagaSCSSStorybookNodeJSExpressRESTSocket.IO

Software Engineer

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.

ReactReduxRedux SagaNodeJSExpressSocket.IOJavascript (ES6)

Frontend Software Engineer

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

ReactReduxNodeJSJavascript (ES6)

Frontend Developer

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

Vue.JsNodeJSJavascript (ES6)

Frontend Software Engineer

CycloMedia Technology

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.

ReactReduxWebGLGISNodeJS

Frontend Developer

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

AngularReactD3.JsNodeJSPHP

Frontend Developer

Ericsson

Developed internal HR applications as an on-site subcontractor.

UX / Frontend Developer

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

AngularNodeJSSails.JSPHPMySQLS3EC2

Junior PHP Programmer

Developed government software (SIDAS) using PHP and PostgreSQL.

PHPPostgreSQL

Frontend Web Developer

Developed WordPress themes and plugins.

WordPress

Developer and Administrator

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

PHPMySQLLinux