Russell – Node.js, React, PostgreSQL

A cybersecurity SaaS platform that helps enterprises and managed security providers continuously assess the security posture of firewall fleets. It analyses device configurations, vulnerabilities, exposure, and lifecycle risk, then produces prioritised reports, alerts, and audit records.

• Increased device-report throughput by approximately 50× by replacing O(n²) application logic with an O(n) approach, pushing appropriate computation into the database, and eliminating unnecessary database round trips.
• Led the platform’s migration to AWS and introduced SQS-based asynchronous processing, creating a more scalable and resilient foundation for high-volume workloads.
• Designed and built an event-driven audit system that records product activity and also powers customer notifications.
• Implemented the product’s end-to-end observability stack with Grafana Cloud, establishing centralised metrics, logs, traces, dashboards, and alerting.
• Work across product, application, and infrastructure concerns to turn emerging customer and security requirements into production capabilities.

A local-first data-transformation platform that helps enterprise data teams build, manage, and run complex SQL transformation pipelines.

• Owned the frontend cutover from Firestore to PostgreSQL, implementing the repository abstraction, dual-write support, feature-flagged reads, and real-time updates with no customer-visible downtime or incidents.
• Improved performance in large enterprise workspaces by reducing React re-renders, moving heavy processing off the main thread, and lowering browser memory pressure.
• Built a two-day ANTLR SQL-parser proof of concept that ran 3–20× faster than the existing parser on the same production SQL corpus. The POC was not shipped; its architecture and test suite informed the team’s production implementation.
• Co-authored the proposal for CLI and file-based AI integration that became a cross-functional product initiative.

A digital-identity platform that enables governments and large enterprises to build privacy-oriented credential presentation and verification into their products. It provides shared identity infrastructure, authentication, and platform-management services.

• Designed and implemented an eventing system supporting audit-log requirements for 6 million MAU.
• Developed internal code-generation tooling that reduced development time for new events by 90%.
• Set eventing best practices for the team and mentored 5+ engineers on system design.
• Introduced Redis caching for large API response payloads, reducing response times for those requests by 95%.
• Collaborated on a new platform global control-plane management API.
• Safeguarded code quality as a codeowner.

An aviation tracking and fleet-management platform that gives operators real-time visibility into aircraft activity and helps them manage operational and safety information.

• Extended the functionality of a legacy React and Redux application.
• Migrated core functionality from JavaScript to TypeScript.
• Implemented new Node.js Express API endpoints to replace, expand, and deprecate existing Java-based endpoints.

A digital onboarding platform for an investment and wealth-management provider, enabling prospective customers to submit the information required to open and fund investment accounts.

• Collaborated on delivering new customer onboarding forms using Gatsby 4 and TypeScript.
• Mentored a junior engineer in best practices.
• Delivered integration functionality with MuleSoft and Salesforce.
• Investigated and promoted observability tools including Dynatrace and Datadog to enable faster issue resolution and active monitoring.

A market-making financial-services platform for cryptocurrency trading and investment.

• Owned the frontend for a market-making financial-services platform for cryptocurrency trading and investment.
• Expanded backend functionality.
• Integrated the platform with Ethereum through the Web3 SDK.

An online grocery store dedicated to providing affordable food for all, offering curated meal crates and food packs, including classic dinners, plant-based options, and community giving programs.

• Designed and developed a message-driven architecture on AWS using SNS, QLDB, DynamoDB, Lambda, and SQS.
• Developed internal tools in React and Typescript that communicated with the backend primarily through websockets.
• Took a leadership role as sprint master in a modified agile workflow.
• Contributed to systems management.

An experiential marketing platform that turns cities into interactive playgrounds, using a mobile app with real-life challenges, clues, and treasure-hunt style games to engage people and promote brands.

• Developed an iBeacon-based alternate reality game using React Native and Typescript.
• Developed a REST API using AWS tools including Lambda, DynamoDB, Cognito, and CloudFormation.