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Hi, I’m Gary Gleeson. I’m a software developer with 15+ years delivering backend and full-stack solutions across government, financial services, retail, and HR/payroll domains. I specialise in .NET/C#, Azure-based architectures, React/TypeScript front-ends, and robust API-driven back ends, with a strong emphasis on security, performance and DevOps practices. I enjoy designing scalable cloud platforms, guiding delivery from UAT to production, and collaborating with cross-functional teams to solve complex business problems. Outside work I’m focused on continuous learning and mentoring junior developers, while keeping hands-on coding as part of my routine.…Hi, I’m Gary Gleeson. I’m a software developer with 15+ years delivering backend and full-stack solutions across government, financial services, retail, and HR/payroll domains. I specialise in .NET/C#, Azure-based architectures, React/TypeScript front-ends, and robust API-driven back ends, with a strong emphasis on security, performance and DevOps practices. I enjoy designing scalable cloud platforms, guiding delivery from UAT to production, and collaborating with cross-functional teams to solve complex business problems. Outside work I’m focused on continuous learning and mentoring junior developers, while keeping hands-on coding as part of my routine.

Gary Gleeson

Full Stack Developer, Back-End Developer, Web Developer, +1

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Hi, I’m Gary Gleeson. I’m a software developer with 15+ years delivering backend and full-stack solutions across government, financial services, retail, and HR/payroll domains. I specialise in .NET/C#, Azure-based architectures, React/TypeScript front-ends, and robust API-driven back ends, with a strong emphasis on security, performance and DevOps practices. I enjoy designing scalable cloud platforms, guiding delivery from UAT to production, and collaborating with cross-functional teams to solve complex business problems. Outside work I’m focused on continuous learning and mentoring junior developers, while keeping hands-on coding as part of my routine.…Hi, I’m Gary Gleeson. I’m a software developer with 15+ years delivering backend and full-stack solutions across government, financial services, retail, and HR/payroll domains. I specialise in .NET/C#, Azure-based architectures, React/TypeScript front-ends, and robust API-driven back ends, with a strong emphasis on security, performance and DevOps practices. I enjoy designing scalable cloud platforms, guiding delivery from UAT to production, and collaborating with cross-functional teams to solve complex business problems. Outside work I’m focused on continuous learning and mentoring junior developers, while keeping hands-on coding as part of my routine.

Available to hire

Hi, I’m Gary Gleeson. I’m a software developer with 15+ years delivering backend and full-stack solutions across government, financial services, retail, and HR/payroll domains. I specialise in .NET/C#, Azure-based architectures, React/TypeScript front-ends, and robust API-driven back ends, with a strong emphasis on security, performance and DevOps practices.

I enjoy designing scalable cloud platforms, guiding delivery from UAT to production, and collaborating with cross-functional teams to solve complex business problems. Outside work I’m focused on continuous learning and mentoring junior developers, while keeping hands-on coding as part of my routine.

Skills

Experience Level

Expert

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Language

English

Fluent

Work Experience

Contract Backend Developer at Pets At Home

June 1, 2025 - October 20, 2025

Payment integration software for retail and veterinary branches; .NET 9 backend API integration for queue-based event-driven architecture; C# and SQL with Cosmos DB for scalable data storage.

Contract Fullstack Developer at MonitorIs

January 1, 2025 - October 20, 2025

Creating Safety Software for The Ministry Of Defence (UK). Fullstack development with React UI (MobX, Tailwind), TypeScript/JavaScript, and .NET Core 8 Web API backend (C#, SQL).

Contract Software Developer at Premcloud

July 1, 2024 - October 20, 2025

Architecting Azure-based systems for HR/Accounting/Tax; React UI (Axios, RxJS, Tailwind); C# Web API (.NET Core 7); JWT authentication; Azure cloud services; DevOps CI/CD and UAT/Prod pipelines.

Contract .NET Developer at Adelante

May 1, 2023 - October 20, 2025

Creating online payment solutions and bank reconciliation software – Open Banking. C#, .NET 6, React, RxJS, WebApi; Azure AD SSO, SAML2; cloud services and DevOps.

Contract .NET Developer at AdviserPlus

September 1, 2022 - October 20, 2025

HR management software development. C#, React, Elastic Search, Azure Functions, Service Bus, Logic Apps, SQL; .NET Azure SSO.

Senior .NET Developer at Sharp Gaming (Betfred)

November 1, 2021 - October 20, 2025

Developing performant betting system backends using C#, WebApi, WinForms/WPF; Core 3.1, MySQL, AWS, Redis, RabbitMQ, Docker, Kubernetes.

Contract Software Developer at Gratte Brothers Group

February 1, 2021 - October 20, 2025

Creating security and monitoring software for major retailers using WPF, C#, VB, T-SQL, .NET Core; RabbitMQ.

Contract Software Developer at Options

November 1, 2020 - October 20, 2025

Creating Tax and Accountancy Software; C#, T-SQL, ASP.NET, MySQL; SSIS ETL data management.

Contract Software Developer at Keoghs (Solicitors)

February 1, 2020 - October 20, 2025

Architecting Azure-based systems for legal casework and billing; proposing system software and infrastructure designs; Service Fabric, Azure Service Bus, .Net Core API, Azure SQL; WebJobs, Azure Active Directory, EF Core, VSTS to Azure CD pipeline.

Contract Software Developer at Bet365.com

July 1, 2019 - October 20, 2025

Designing and creating WinForms/WPF and web-based trader pricing tools; API, Messaging and Secure Payment System Integration; Redis-like caching with document databases; DevOps tooling (Jira, Git, Jenkins).

Contract Software Developer at ThinkMoney.com

June 1, 2018 - October 20, 2025

Modernising WinForms CRM with SOA (Restful Microservices) architecture; Web API Core 2.0, WCF, C#, T-SQL.

Senior Software Engineer at WebuyAnywhere.com

January 1, 2017 - October 20, 2025

Full-stack .NET development, C#, T-SQL, ASP.NET, MVC 5, WCF, Web API 2.0, MSMQ; JavaScript, JQuery, AngularJS, CSS; pattern-based design and DevOps tooling.

Systems Developer at Zen Internet

January 1, 2015 - October 20, 2025

.NET development (C#, VB.NET, T-SQL) across SQL Server 2005/2008/2012; ASP.NET, MVC, WCF, Web API 2.0; Agile development lifecycle.