University of Limerick

iOS Contractor

Forcepoint

Senior Mobile Developer

- Worked on the first version of a non-custodial lightning wallet for the Bitcoin network using Swift and SwiftUI.
- Worked closely with other teams, Product/Android/Backend to integrate quickly on designs and find solutions to the challenges of developing a non-custodial wallet.

lipa

iOS Developer

- I developed the first version of the River iOS app using SwiftUI and Combine. The app allowed users to register and add payment methods to buy and transfer Bitcoin.
- I worked with the backend Elixir developers to define the GraphQL interface for the app.
- Liaised with Apple to handle app rejections and resolve the issues which they raised.

River Financial

- I joined a team writing a fully SwiftUI app to manage facilities such as stadiums, train stations and shopping complexes in the UK and Ireland using native features such as NFC.

Over-C

- I worked in a team to develop a new Sportsbook app for the US market.
- I was responsible for developing a component to monitor and control access to the app based on the users location to comply with strict state law in the US.

FanDuel

- I developed a library to model and guarantee legal compliance for handling gas onsite in the USA.
- I extended functionality of apps and libraries developed on a previous contract.

City Facilities Management UK

- I developed a HealthKit App for iOS which produced custom PDFs and charts for patients to share data with their doctor.

RED CROWN SOFTWARE LIMITED

- I created the Payfont SDK to allow 3rd party iOS applications to integrate Payfont’s technology.
- I designed and implemented a plugin architecture to allow companies to add 3rd party security authentication products (i.e face, voice) to the Payfont platform.
- Created the Payfont Authenticator application. This allowed users to customise how they accessed services, ex. replace password with voice authentication.

Payfont Limited

- I led a team refactoring a large shared library into a number of frameworks for use in internal apps. This considerably reduced the amount of code duplication and improved developer productivity.
- I mentored junior members of staff in best practices for software development.

City Facilities Management

- I developed the first version of iOS app which allowed users to buy hourly car insurance.
- The app onboarded new users, scanning drivers license and verifying their identity.

Cuvva

- Short term contract to upgrade two legacy apps for iOS 8 and larger screen sizes using Auto Layout.

Kotikan

- Joined an existing iOS team to add features and fix bugs in the Tesco Bank app.

Tesco Bank

- Sole developer responsible for full product lifecycle of an enterprise app to track commercial loans.
- The app consumed RESTful web services and incorporated several in-house as well as external products for encryption, user authentication etc.

J.P. Morgan

iOS Consultant

- Developed content library for iPad which dynamically updated content for travelling workers, tracked consumption and collected feedback.
- Gamified compliance training app.

G2G3

- I developed the initial version of iOS app to exercise the SkillPages API.
- The app features included user authentication, user profile creation/modification, photo upload and user-to-user messaging.

SkillPages

iOS Contractor (Remote)

Completed contracts:
- app to guide user around venues, such as museums, including ability to use in-app purchases to get new venues.
- app to manage and engage users in a customer loyalty-like program.
- app to allow users to order lenses and try on "virtual glasses" for a boutique opticians.
- app to allow user to cross reference elected officials with parliamentary groups.
- iPhone + iPad app for global fashion brand to showcase catalog and allow user to customise clothes.

Appesque BVBA

iOS Developer (Remote)

- I worked on a cross-platform product in C++ and QT for Unix and Windows 32/64 bit platforms.

Xilinx

Senior Software Engineer

- I developed C++/C# web services to provision mobile users with broadband services.

Perlico

Software Developer

- I was responsible for the analysis, redesign and implementation of legacy reporting system.
- Involved in planning production deployments which impacted all users across the Vodafone network.

Vodafone Ireland

- I was the architect and developer of server side components for BlackBerry software using C++ and .Net.
- Handled scalability issues so the product could handle large corporate networks with hundreds of printers.

David O'Callaghan