Full Stack developer working with Angular, React and Node.js

Otter is an open-source cloud native framework for peer-to-peer video communication within web applications.• Designed a serverless architecture on AWS that prioritizes low maintenance and scalability.• Implemented a Signaling server with 3 Lambdas written in TypeScript for peer connectivity and messaging; configured the WebSocket API Gateway for long-lived connection, DynamoDB for persisting connection state.• Optimized Signaling Lambda's performance by reconstructing the message structure and caching the connection state, resulting in an 80% decrease in latency (from 1000+ms to 200+ms).• Containerized CoTURN, an open-source implementation for NAT traversal on Fargate; configured ECS Task Definitions, Network Load Balancer, and auto-scaling group for horizontal scaling.• Developed and published an npm package using TypeScript and oclif that streamlines the deployment and teardown of 6 CloudFormation stacks and 90+ AWS resources with a single command.• Architected a scalable API server with one Lambda per endpoint for integrating Otter into existing applications; used HTTP API Gateway to handle requests, and DynamoDB to persist session state.• Secured API Gateways with API Key authentication & JSON Web Tokens using Lambda authorizers.• Crafted a React web application that uses WebSocket and WebRTC API to enable real-time video communication, messaging and file-sharing between peers; polished with Tailwind CSS; hosted using CloudFront with S3.• Authored a comprehensive case study on Otter's design decisions and engineering challenges.

Personal projects during this time:• ReAck: a real-time webhook inspector with custom endpoints (React, Express, WebSocket, PostgreSQL, MongoDB)• NoSpoil: a household inventory management application (Ruby, Sinatra, PostgreSQL, Bootstrap)• Later: a minimal todo app (Ruby, Sinatra, HTML/CSS)

Collaborated with a team of six developers in an Agile environment with an average sprint length of four weeks. Delivered two internal web applications aiming for boosting sales team's performance and efficiency. Key features include:• A dashboard providing customer and market insight for SME sales• Personalized, more detailed customer data report for KA sales upon request• A product recommendation service based on customer interactive metrics