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Hi, I’m Daniel O’Sullivan, a Belfast-based software developer with a strong focus on AI, VR/AR and game development. I enjoy turning ideas into robust, production-ready software—delivering Unity-based games, AR/VR experiences, and cloud-backed applications for clients, while leading teams and coordinating projects through agile processes. I’ve earned a First Class Honours BSc in Computing (Game Development), completed the Unity Certified Programmer certification, and worked across roles from XR applications to enterprise software. I’m always learning, mentoring others, and exploring new tech to push creative and technical boundaries.…Hi, I’m Daniel O’Sullivan, a Belfast-based software developer with a strong focus on AI, VR/AR and game development. I enjoy turning ideas into robust, production-ready software—delivering Unity-based games, AR/VR experiences, and cloud-backed applications for clients, while leading teams and coordinating projects through agile processes. I’ve earned a First Class Honours BSc in Computing (Game Development), completed the Unity Certified Programmer certification, and worked across roles from XR applications to enterprise software. I’m always learning, mentoring others, and exploring new tech to push creative and technical boundaries.

Daniel O'Sullivan

Game Developer, Programmer, Developer, +4

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Hi, I’m Daniel O’Sullivan, a Belfast-based software developer with a strong focus on AI, VR/AR and game development. I enjoy turning ideas into robust, production-ready software—delivering Unity-based games, AR/VR experiences, and cloud-backed applications for clients, while leading teams and coordinating projects through agile processes. I’ve earned a First Class Honours BSc in Computing (Game Development), completed the Unity Certified Programmer certification, and worked across roles from XR applications to enterprise software. I’m always learning, mentoring others, and exploring new tech to push creative and technical boundaries.…Hi, I’m Daniel O’Sullivan, a Belfast-based software developer with a strong focus on AI, VR/AR and game development. I enjoy turning ideas into robust, production-ready software—delivering Unity-based games, AR/VR experiences, and cloud-backed applications for clients, while leading teams and coordinating projects through agile processes. I’ve earned a First Class Honours BSc in Computing (Game Development), completed the Unity Certified Programmer certification, and worked across roles from XR applications to enterprise software. I’m always learning, mentoring others, and exploring new tech to push creative and technical boundaries.

Available to hire

Hi, I’m Daniel O’Sullivan, a Belfast-based software developer with a strong focus on AI, VR/AR and game development. I enjoy turning ideas into robust, production-ready software—delivering Unity-based games, AR/VR experiences, and cloud-backed applications for clients, while leading teams and coordinating projects through agile processes.

I’ve earned a First Class Honours BSc in Computing (Game Development), completed the Unity Certified Programmer certification, and worked across roles from XR applications to enterprise software. I’m always learning, mentoring others, and exploring new tech to push creative and technical boundaries.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Developer Team Lead at SCG World

April 1, 2023 - Present

Developing software applications for clients using a wide array of Microsoft technologies. Managing ongoing projects through daily scrum meetings. Building HoloLens applications with back-end services.

Game Developer at Rocket Flair Studios

April 1, 2023 - October 14, 2025

Contributed to a city-builder title, Surviving the Abyss, with agile development, Jira tasking and Git workflow. Worked with Unity and C# to implement features and systems for production-ready gameplay.

XR Application Developer at Sentireal

August 1, 2021 - October 14, 2025

Key developer on bespoke immersive training apps, collaborating with clients from concept to completion. Led AR/VR workstreams, contributed engineering ideas, mentored team members, and represented the company at conferences.

Placement Year, Junior IT Support Analyst at Herbert Smith Freehills LLP

August 1, 2017 - October 14, 2025

Part of the Belfast IT Support team, responding to and resolving logged issues via face-to-face interactions or email. Managed larger projects (e.g., server refits, migrations) using Kanban methods.

Senior Developer Team Lead at SCG World, International

April 1, 2023 - Present

Developing software applications for clients using a wide array of micro software technologies. Manage ongoing projects through daily scrum meetings. Creating HoloLens applications with backend services. Cosmos DB, Functions, Relay, Storage Containers, Active Directory, CDN, Identity management etc. Developing authentication flow and security for applications. Creating agents in Copilot Studio. Liaising with other professionals to create medical simulations.

Game Developer at Rocket Flair Studio, Belfast

April 1, 2023 - October 14, 2025

Agile development on a city-builder title, Surviving the Abyss. Jira tasks and Git branching. Working with Unity and C#. Team-based communication. Developing features and systems from prototype to production-ready. Input on gameplay design aspects.

XR Application Developer at Sentireal, Belfast

August 1, 2021 - October 14, 2025

Key programmer on bespoke immersive training apps, collaborating from concept to completion. Liaised with clients for feedback and became go-to expert for technical guidance. Contributed ideas to upper management and led teams to initiate projects, as well as representing the company at conferences. Worked with AR and VR technologies. App and game development in Unity. Led on projects such as Ophthalmology and Inspection Training. Guided and trained team members. Rapid iteration and prototyping and Agile software development. Wrote .NET and web-based programming such as C#.

Placement Year, Junior IT Support Analyst at Herbert Smith Freehills LLP, Belfast

August 1, 2017 - October 14, 2025

Worked as part of the IT support team for the Belfast office, handling help desk requests and resolving issues in person or by email. Managed larger projects such as refitting servers or migrating to new computers using Kanban.