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Software development and architecture consultant with over 20 years industry experience and a passion for producing effective, maintainable solutions using best practices and the latest technology and optimizing the development lifecycle with AI, CI/CD and cloud. Designing and delivering solutions for clients from a variety of sectors including travel, healthcare, finance, retail and tourism. These solutions have ranged in size from single-user desktop and embedded device applications to highly scalable, multi-tenant service-orientated architectures. Specialties: Best practices, SOLID principles, TDD/BDD, CI/CD, .NET, C#, TypeScript, JavaScript, React, Redux, AWS, Azure, SQL & NoSQL…Software development and architecture consultant with over 20 years industry experience and a passion for producing effective, maintainable solutions using best practices and the latest technology and optimizing the development lifecycle with AI, CI/CD and cloud. Designing and delivering solutions for clients from a variety of sectors including travel, healthcare, finance, retail and tourism. These solutions have ranged in size from single-user desktop and embedded device applications to highly scalable, multi-tenant service-orientated architectures. Specialties: Best practices, SOLID principles, TDD/BDD, CI/CD, .NET, C#, TypeScript, JavaScript, React, Redux, AWS, Azure, SQL & NoSQL

Derek Fowler

Front-End Developer, Back-End Developer, Full Stack Developer

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Software development and architecture consultant with over 20 years industry experience and a passion for producing effective, maintainable solutions using best practices and the latest technology and optimizing the development lifecycle with AI, CI/CD and cloud. Designing and delivering solutions for clients from a variety of sectors including travel, healthcare, finance, retail and tourism. These solutions have ranged in size from single-user desktop and embedded device applications to highly scalable, multi-tenant service-orientated architectures. Specialties: Best practices, SOLID principles, TDD/BDD, CI/CD, .NET, C#, TypeScript, JavaScript, React, Redux, AWS, Azure, SQL & NoSQL…Software development and architecture consultant with over 20 years industry experience and a passion for producing effective, maintainable solutions using best practices and the latest technology and optimizing the development lifecycle with AI, CI/CD and cloud. Designing and delivering solutions for clients from a variety of sectors including travel, healthcare, finance, retail and tourism. These solutions have ranged in size from single-user desktop and embedded device applications to highly scalable, multi-tenant service-orientated architectures. Specialties: Best practices, SOLID principles, TDD/BDD, CI/CD, .NET, C#, TypeScript, JavaScript, React, Redux, AWS, Azure, SQL & NoSQL

Available to hire

Software development and architecture consultant with over 20 years industry experience and a passion for producing effective, maintainable solutions using best practices and the latest technology and optimizing the development lifecycle with AI, CI/CD and cloud.

Designing and delivering solutions for clients from a variety of sectors including travel, healthcare, finance, retail and tourism. These solutions have ranged in size from single-user desktop and embedded device applications to highly scalable, multi-tenant service-orientated architectures.

Specialties: Best practices, SOLID principles, TDD/BDD, CI/CD, .NET, C#, TypeScript, JavaScript, React, Redux, AWS, Azure, SQL & NoSQL

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

.NET Developer (Contract) at PA Consulting

July 1, 2025 - April 1, 2026

Developed a HIPAA-compliant health care data registry for a US-based consortium. Built a Blazor interactive server web app with Tailwind CSS, EF Core, SQL Server, and Auth0; configured CI/CD with GitHub Actions and deployed into Azure; implemented role-based access control and secure data access.

Senior Software Engineer (Contract) at New Day

May 1, 2022 - June 1, 2025

Developed new features for the inbound and outbound payment channels of New Day's credit card platform, including integration with multiple banking and payments systems. Built event-driven services and APIs, improved reliability and performance, and contributed to CI/CD improvements.

Full-Stack Developer (Contract) at UK Civil Service

November 1, 2019 - May 1, 2022

Web front-end using JavaScript & React/Redux; back-end in .NET Core on AWS Lambda and ECS. Worked with relational (Aurora MySQL) and NoSQL (DocumentDB) stores, applied Terraform for infrastructure, and contributed to a secure email verification tool used by UK public and private sector organisations.

JavaScript Developer (Contract) at BNP Paribas

March 1, 2018 - October 1, 2019

Feature development on an interest rate derivative trading platform. Front-end in TypeScript with React/Redux; back-end in .NET on AWS; performed performance optimisations and contributed to test automation and deployment pipelines.

Developer at Trainline

January 1, 2014 - February 1, 2018

Led infrastructure provisioning and deployment automation for core retail components; defined REST API standards and integration patterns to support international expansion; migrated core retail services to AWS and instituted standardized dev/ops processes to accelerate delivery.

Systems Architect at Cogent Healthcare Systems

August 1, 2012 - November 1, 2013

Introduced SignalR to push GPS tracking and patient readings from embedded devices to a web dashboard as part of an MVP, supporting a high-value contract. Addressed regulatory requirements and data protection (ISO 27001, HIPAA, NIST) and performed risk analyses and threat modelling.

Senior Application Developer at Cogent Healthcare Systems

May 1, 2011 - August 1, 2012

Led development across multiple modules, designed and implemented infrastructure provisioning and deployment automation, and established standardized processes to improve reliability and delivery speed.

Software Architect at Dot Net Solutions Ltd.

October 1, 2009 - May 1, 2011

Developed bespoke software with an emphasis on rapid proof-of-concept, cloud deployment on Azure, and integration with legacy systems; worked across front-end and back-end, including hardware peripherals (Bluetooth medical devices) and service-oriented architectures.