James Zammit

Co-Founder & Ceo

Roark (YC W25) · San Francisco Bay Area

Present

Build voice agents you can trust. Roark tracks call metrics, runs evaluations, and stress-tests your agent with simulated callers across accents, languages, and speaking styles. Failed calls become tests - giving you visibility and continuous improvement. https://www.producthunt.com/products/roark?launch=roark

Senior Software Engineer

AngelList · San Francisco Bay Area

- Supported AngelList’s core portfolio management system, contributing to the company’s expansion from $10B to over $124B in assets under management. - Led the development of Relay, a new AI-powered portfolio manager. Built using Postgres RDS, Prisma, Next.js, AWS Step Functions, Lambda, ECS, Temporal, OpenAI, AWS Textract, Datadog, and Sentry; the system processes thousands of emails and documents monthly to extract structured metrics for funds to report on. - Introduced a new core repository for micro-services deployment, now the default across AngelList and used by over 30 engineers. Implemented with TypeScript, Node.js, AWS CDK, Lambda, CodePipeline, and NX, including setup of multiple AWS accounts and CI/CD processes. This repository powers core primitives such as Document Services and Tax Automation Processes. - Contributed to ADAPT, AngelList’s design framework, by adding key components like MoneyInput and FilterButton used across all products and users. - Participated in Fund I…

Senior Full-Stack Engineer

Avid · London, England, United Kingdom

- Led the development of the second iteration of the Creator Studio, enabling users to generate audio courses by simply answering a few questions through an interactive wizard. Built using Nest.js, Node.js, Jest, GraphQL (Apollo), Next.js, Kubernetes (GKE), and Redis. - Developed social learning features, allowing customers to experience courses as cohorts, including capabilities for messaging, commenting, and streaming audio content using WebRTC. - Migrated all business customers from Stripe Standard to Stripe Express, improving payment processing efficiency and user experience. - Set up CI/CD pipelines with GitHub Actions to automate building, testing, and deploying code across all core repositories, enhancing development workflow and reducing deployment times.

Senior Software Engineer

IDEA Management Consulting Services Limited · Mosta, Malta

- Led the development of Idea Academy, a student CRM platform now used to manage over 100,000 students. Built the front end with React.js and the back end with Node.js, MongoDB and Elastic search. Utilized Docker for containerization and Kubernetes (GKE) for orchestration. - Collaborated with cross-functional teams, aligning technical solutions with business objectives to enhance educational administration and student engagement.

Product Owner & Technical Lead

Gaming Innovation Group - (Infobot) · Saint Julian's, Malta

- Led the integration between Infobot and GiG’s internal customer messaging platform. Implemented a brokerage system with RabbitMQ, processing over 25,000 messages per week. - Developed a live-chat plugin with React.js for front-facing sites, replacing the legacy user facing chat interface. - Managed a five person engineering team to deliver and maintain the customer support platform.

Co-Founder & Cto

Infobot · Malta

- Co-founded and led the development of a chatbot-based customer support platform, allowing businesses to automatically generate conversational agents tailored to their industry. - Partnered with Stripe, Facebook, Mercury, and Google Cloud for Startups, leveraging their support to enhance platform capabilities. - Developed and trained probabilistic models using TensorFlow and Rasa.ai to handle multi-turn user conversations (prior to LLMs). - Designed and developed the platform from the ground up using WebSockets, Node.js, React.js, Docker, Kubernetes, GitLab CI, Cloud Firestore, RabbitMQ (AMQP), Google Cloud Storage, and Firebase Auth. - Led the company to a successful majority investment by Gaming Innovation Group (GiG), facilitating further growth and integration.

Consulting Software Engineer

Courtland Brooks · New York, United States

- Developed a matching algorithm using supervised machine learning, matching over 400,000 users across multiple dating platforms. - Conducted technical market research for seven clients, including Zinger, Cove/Muuse, Cupid & Luvutar & Love Again, Meet Love Repeat, Meetville/Just She/Just Men, DSN.ai, and OkCupid.

Co-Founder & Cto

Kwaver

- Developed a real-time music video collaboration app where musicians worldwide could jam together, reaching 30,000 monthly active users. - Utilized ffmpeg and python frameworks for real-time video and audio synchronization, integrated with a backend architecture using WebRTC, WebSockets, and Node.js. Built the iOS app in Swift, using MongoDB for data storage and Firebase for authentication. Exhibited at Web Summit 2015 and partnered with Google Firebase, presenting at Google I/O 2015. - Secured backing from Andrew Lee, Co-founder of Firebase.

Software Engineer Internship

Google · Mountain View, California, United States

Seed investment from a Firebase co-founder and a Google I/O partner.

Ios Software Developer

MITA (Malta Information Technology Agency) · Smart City Malta

- Developed an iOS application for a local Maltese national park as part of a competitive initiative by MITA over the summer period. - Implemented real-time geolocation features to guide users through the park. - Used Google Firebase for real-time data synchronization and Facebook Parse for user data storage. - Achieved over 65,000 downloads, with the app reaching #1 in its category on the App Store for two weeks.