I lead engineering for Cash App – supporting 1,500 engineers, including 200 engineering directors, engineering managers & tech leads. Cash's engineering organization is a globally distributed team spanning four continents. Our Engineering team builds product, platform & infrastructure supporting 57M MAUs across product verticals including P2P/QR/online payments, consumer banking, cards, equity investing, crypto, lending, taxes, growth, rewards, status, BNPL, global and more. We also build shared platform services, as well as cloud-based infrastructure, and provide engineering support for customer operations, brokerage, security, privacy, compliance, treasury & reconciliation.WomEng Executive co-chair 2020/2021/2022.

Engineering lead for Cash App's Product Engineering organisation – supporting 40 engineering directors, engineering managers & tech leads. Product engineering is a distributed team of over 200 engineers across 10 locations worldwide.We build product & infrastructure across verticals including P2P payments, QR code payments, consumer banking, cards, equities investing, crypto, lending, growth, rewards, status, global and more. As well as providing engineering support for customer operations, security, privacy, compliance & reconciliation.

Engineering Manager on the Machine Learning (ML) platform team. We work in a small, distributed team, consisting of engineers and data scientists, building out the training & evaluation ML platforms underlying the Cash App. We work mainly on risk & fraud prevention, as well as new product features.We work on a scale unprecedented in Australia, on the fastest growing financial app in the world. Cash App has millions of active customers and is on a mission to make banking accessible to the under-served and unbanked.

Engineering Manager on the Cash App Machine Learning (ML) platform team.

Director of Engineering at Australia’s largest consumer internet company. Responsible for 3 teams across personalisation, membership & native mobile. Influential role in leadership, culture, strategy, hiring & technical direction across the whole business. Instrumental in growing the product engineering group from 15 to 85 people in 2 years. Coached many of my senior engineers into leadership positions, including engineering managers & directors.Built & rolled out Redbubble’s engineering career development & salary model, integrating it into the hiring process & as a tool in the ongoing development of engineers. Spoke on this model at several conferences including CTO Summit & Agile Australia.Created & led the team that built Redbubble’s first native mobile app. Developed & garnered support for the business plan, bootstrapped the product strategy & built the team. My team scaled the app to 100K MAU & 30% Day 1 retention in 8 months. Architected & led development of the backend API & created several services in the Redbubble monolith. Pivotal in the move to breaking up the monolith, adoption of GraphQL & move towards more API- & event-based architectures. Drove the technical vision around personalisation & spearheaded a new experimentation platform. Broadened the scope of the app into a mobile-first strategy for the broader business.Redbubble is building the global digital marketplace for creative individualism. We enable a vast community of incredibly talented artists and designers to sell their works on our high quality products to a global customer base that seeks to express their individuality. We are working to build a more engaging experience for Redbubble consumers, to understand our buyers better, and through this improve their experience both on-platform & off. Our work focuses on personalisation, membership and mobile.

I consulted to Redbubble in a leadership mentoring/coaching role, comprising two main parts. Firstly, I worked to improve the effectiveness of our delivery teams, facilitating positive structural & cultural change within a fast moving & rapidly growing organisation.Some of the activities I was involved in include:* Supporting the outgoing CTO, advising the interim CTOs & assisting in the hiring of the new CTO;* Mentoring technical leadership across delivery teams including architects, lead engineers, tech, guild & team leads;* Built & introduced a skills ladder & corresponding renumeration structure to the engineering group;* Encouraging a learning culture;* Architectural improvements to the platform;* Structuring for growth, of both the platform (e.g. micro-services) & team structure (cross-functional teams, service ownership, etc.);* Improving technical practice;* Hiring, team building & culture.I also worked as a lead engineer across several delivery teams.Disaster RecoveryAs part of this work we successfully delivered a disaster recovery project, a first for RB, which involved test-driving infrastructure & using automated provisioning tools (Chef) to replace the hand-rolled environments currently in use. This is the first step along a path to resilient infrastructure (self-healing, etc.).Browse & EngageImproved the front end of the site, including its browsability & engagement, for which we had significant revenue increases. Rolled out a new brand; updating our front-end toolkits, frameworks & development practices in the process.RB works in cross functional teams, making heavy use of lean principles, A/B & multi-variant testing, and in this we work closely with our in-house data science experts. We are currently analysing data using BigQuery, R, and hand rolled tools in Ruby & Python.

Client principal & senior engineer across web & iOS projects for Melbourne Business School (MBS), Eventer, Covidence & Redbubble.

Covidence is a platform for systematic reviews, mainly used by medical doctors & scientists. I handled technical support & maintenance for Covidence for a short period while the lead developer was leave.

Eventer is a video delivery platform, mainly used by technical conferences. I added paid content support to Eventer (using Pin), allowing event organisers to charge for access to content, either independently or in combination with event ticketing.

I was secconded back to Oomph for a 3 month stint, to help stabilise & improve the performance & scalability of the platform after substantial growth. I also lead the hiring process for the head of engineering role.

The Thread project at MBS is an online executive learning program. I worked on Thread for several months across the web & iOS components of the platform.

Tech Lead on CCLAS, the leading laboratory information management system (LIMS) for mining and metal processing.

The world's #1 tablet platform: http://oomphhq.com/imonitor/ (2 years running).Co-founder & Chief Technology Officer of Oomph, which became Australia’s premier mobile development company. Helped raise funding to transform the company from a services to a product company. Ran the 10+ person engineering office for 51⁄2 years.Built over 150 bespoke applications for clients across web, iPhone, iPad, Blackberry, Nokia & Windows Phone. Led a team of 5 developers to build the worlds best tablet publishing platform, beating out multi- national heavyweights including Adobe & Mag+.Architected & built the first platform UI & API backend in Rails, which today powers circa 3m devices. Built scalable, persistent push (APNS) & full text indexing infrastructure in Scala. Low-level network infrastructure & frameworks including a reliable, persistent messaging system in Objective-C. Architecture & toolchain development for Android port. Built high-throughput & scalable app analytics solution.Responsible for technical functions of the business, including architecture, product development, technical operations & customer support. Day to day responsibilities for product management, project management, technical leadership, architecture, iteration & release management, SEO/SEM, Board reporting.

Tom has worked as a senior developer and consultant at Workingmouse for two and a half years. While at Workingmouse he developed Java web applications for Harvey Norman; a back end messaging & printing system for Suncorp; a realtime data-mining cloud/grid solution for Veitch Lister Consulting; a Ruby on Rails web site for Scoodi; built iPhone web applications for News Digital Media, tinkered on two Scala projects & helped run Australia's first Scala course.

Initially helped Scoodi integrate PhotoShop design layouts into a Rails application using semantic markup & CSS. He then became the lead developer for several months and lead the move from Rails 1 to 2 along with significant performance improvements. Web integration and performance analysis of server-side advertising engine written in Scala.

Created a the first iPhone web apps in Australia. Sole developer on the TrueLocal application, REST web service integration, world-first location aware off-deck web application (Optus). Specification driven development, stateless share-nothing architecture. Rails apps deployed under JRuby in Tomcat.

Enterprise Document Generation System – Generation of documents using XSL-FO templates, with multiple delivery targets; online, email, print, mailhouse, PDF. Developed SOAP-based Web Service and Java RPC system interfaces, IoC framework for component registration and discovery, generic RPC framework with RMI implementation, C# interface to Win32 API. Worked within XP project team, iteration management, pair programming, iterative development, continuous refactoring, TDD and high quality metrics.

High performance computing transportation modelling – Led five-person team from conception to successful pilot deployment of grid-based data processing system. Real-time querying into 100GB transportation modelling data system from Rails web-application, SOAP web-service, GridGain computation grid, hosted on Amazon EC2Full details:http://adams.id.au/blog/2009/03/processing-large-datasets-in-real-time-2/http://blip.tv/file/718271

Tom took over development of Flight Centre's flight booking engine after marketing campaigns brought down the system several times. With his team, Tom successfully identified performance problems and was able to continue to support the aggressive growth needed by the marketing group over almost a year. Tom worked closely with FCT management and external vendors including Amadeus to continually improve the system's performance.Tom worked within customised FDD process, introducing TDD, continuous integration, refactoring, quality tools and other agile practices to improve the development process.

Enterprise Document Generation System – Generation of documents using XSL-FO templates, with multiple delivery targets; online, email, print, mailhouse, PDF. Developed SOAP-based Web Service and Java RPC system interfaces, IoC framework for component registration and discovery, generic RPC framework with RMI implementation, C# interface to Win32 API. Worked within XP project team, iteration management, pair programming, iterative development, continuous refactoring, TDD and high quality metrics.

Managed beta programs for commercial software releases based on leading edge Semantic Web technologies. Led pre-sales and post-sales support including infrastructure development. Developed vertical demonstrations based on core semantic technologies. Pre- & post-sales support to sales, marketing and executive management. Product management including requirements gathering. Developed and gave developer training course in semweb & Tucana products. Requirements analysis, design and development of OWL Ontology Editor in Java Swing.W3C member – Data Access Working Group (DAWG) and Semantic Web Best Practice & Deployment Working Group (SWBP&D WG).Plugged In Software was renamed Tucana to match our suite of products.

Persistent Data Security: Developer – PKI management and transparent digital content protection. Project management, requirements, digital rights infrastructure based on XrML, functional specification, Windows client application in C++ & WSDL interfaces to server logic.Tucana Metadata Extraction Framework: Developer – High performance, scaleable distributed metadata processing system.LRC AskFirst: Lead Developer – Scoped project and developed user requirements, lead architecture design and technology evaluation, content management system based on Semantic Web technologies.Tucana Knowledge Server & Kowari Metastore: Developer – Massively scalable, transactional, purpose-built metadata database and EII platform. Developed query language and parser, XSLT, JSP tag library, SOAP query endpoint, web-based vertical demonstrations.

Convenor Internet Programming, convenor – WWW Technologies and Applications, convenor –Programming I (Java), head tutor – Programming II (Java).Developed several teaching tools, set-up and administered Windows servers, developed and maintained course website, strategic planning, research and developed online course material.