I am a highly skilled and experienced .NET Developer with 19 years of experience designing, developing, and maintaining web applications. I am proficient in both front-end and back-end technologies, with a strong focus on delivering high-quality, scalable, user-centric solutions. I excel at leading teams, mentoring developers, and driving projects from planning through to delivery. I enjoy solving complex problems and thrive in collaborative environments where innovative ideas turn into practical software that meets business needs.

Sean Dooley

I am a highly skilled and experienced .NET Developer with 19 years of experience designing, developing, and maintaining web applications. I am proficient in both front-end and back-end technologies, with a strong focus on delivering high-quality, scalable, user-centric solutions. I excel at leading teams, mentoring developers, and driving projects from planning through to delivery. I enjoy solving complex problems and thrive in collaborative environments where innovative ideas turn into practical software that meets business needs.

Available to hire

I am a highly skilled and experienced .NET Developer with 19 years of experience designing, developing, and maintaining web applications. I am proficient in both front-end and back-end technologies, with a strong focus on delivering high-quality, scalable, user-centric solutions.

I excel at leading teams, mentoring developers, and driving projects from planning through to delivery. I enjoy solving complex problems and thrive in collaborative environments where innovative ideas turn into practical software that meets business needs.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more

Language

English
Fluent

Work Experience

.NET / Umbraco Contractor at Aldermore Bank
April 1, 2025 - June 30, 2025
- Architected and rebuilt the corporate website using Umbraco CMS with a modular, component-based design, improving performance and editorial flexibility. - Delivered training and mentorship to developers and content editors, increasing satisfaction and reducing maintenance overhead. - Collaborated with internal teams to ensure smooth project delivery and secured repeat engagements
Head of .NET at Mosquito Digital
June 1, 2018 - January 31, 2021
- Lead and manage a team of .NET developers, ensuring on-time and on-budget project delivery. - Architect and plan bespoke .NET and Umbraco projects, driving the implementation of new features and functionalities. - Oversee end-to-end testing and debugging processes, guaranteeing high-quality software that meets organizational needs. - Implement and enforce a code formatting policy, establishing consistent coding standards across the team. - Develop and execute a branching strategy, streamlining the development process and enhancing collaboration. - Introduce regular code reviews, improving code quality and fostering a culture of continuous learning. - Set up and manage a CI/CD server, automating workflows and accelerating release cycles. - Conduct bi-monthly check-ins with team members, providing mentorship, feedback, and ensuring alignment with project goals. - Stay current with the latest .NET advancements, applying cutting-edge technologies to drive innovation and efficiency.
Web Developer at ICE
May 1, 2006 - March 31, 2011
- Designed wireframes and developed both front-end and back-end solutions for a diverse range of regional and national clients. - Specialized in creating business, promotional campaign, and e-commerce websites, as well as interactive tools, mobile, and touchscreen applications. - Leveraged expertise in various CMS platforms, including setting up and querying SQL databases to deliver robust and scalable solutions. - Led client communications, managing project planning, and providing comprehensive training to ensure effective use of developed solutions.
Contractor at PayStream
June 1, 2025 - September 16, 2025
Supported an in-house web development team by building and maintaining their Umbraco-based website.
Principal Developer at CTI Digital
March 1, 2025 - September 16, 2025
Oversee project execution and provide strategic technical guidance to ensure delivery aligned with client goals. Collaborate with project managers to define scope, estimate timelines, plan workflows, and monitor progress; mentor and support team members.
Head of .NET at Mosquito Digital
January 1, 2021 - September 16, 2025
Lead and manage a team of .NET developers; architect software systems; oversee end-to-end testing and debugging; implement a code formatting policy; develop branching strategy; introduce regular code reviews; set up a CI/CD server; bi-monthly check-ins; stay current with .NET advancements.
.NET Developer at Mosquito Digital
June 1, 2018 - September 16, 2025
Developed front-end and back-end solutions for regional, national, and international clients; designed multilingual Umbraco theme-based boilerplate used in 100+ websites; integrated SharePoint with Umbraco to create an online resource for international distributors; developed a WEB-RTC solution for an educational institution; contributed to Umbraco-based content packaging for a mobile app; delivered solutions for major clients.
.NET Developer at Inspirational Inc
August 1, 2012 - September 16, 2025
Designed wireframes and developed websites and interactive tools for regional and national clients; created multilingual Umbraco theme boilerplate used for multiple sites; led client communications, planning, and training on solutions.
Junior Developer at ICE Creates Limited
March 1, 2011 - September 16, 2025
Designed wireframes and developed front-end and back-end solutions for regional and national clients; led client communications and training; worked on CMS and database tasks.

Education

Bachelor of Science at Liverpool John Moores University
September 1, 2002 - July 31, 2005
HND at Liverpool John Moores University
September 1, 2000 - July 31, 2002
BSc (Hons) Multimedia Systems at Liverpool John Moores University
January 11, 2030 - September 16, 2025
HND Multimedia Systems at Liverpool John Moores University
January 11, 2030 - September 16, 2025

Qualifications

Umbraco Certified Professional
April 1, 2024 - April 1, 2026

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Education, Healthcare
    paper Aldermore Bank - Website Rebuild
    • Led the architecture and redevelopment of Aldermore’s corporate website using Umbraco CMS, introducing a modular, component-based design that enhanced editorial flexibility and site performance.
    • Delivered developer and content editor training, significantly improving user satisfaction
      and reducing ongoing maintenance efforts.
    • Implemented unit testing and performance optimizations, ensuring a robust and scalable
      platform that earned repeat client engagements.
    paper British Nutrition Foundation - Website Rebuild, Education Platform
    • Delivered a fully responsive website and professional training platform using Umbraco, featuring advanced search filters, secure member logins, and tailored dashboards.
    • Integrated analytics tools to track user engagement and inform content strategy, driving increased traffic and user retention.
    • Maintained active stakeholder involvement through iterative feedback, ensuring alignment with organisational goals.
    paper Zoflora - Website Rebuild & Multiple Campaign Microsites
    • Spearheaded redevelopment of Zoflora’s main website with a responsive, modular architecture, enabling enhanced content control and improved user experience.
    • Led creation of campaign microsites powered by a shared .NET Core Web API, streamlining development and cutting maintenance overhead by unifying multiple systems.
    • Partnered with design and marketing teams to maintain brand consistency and optimise site engagement through interactive features.
    paper Turtle Wax - Global Website & Distributor Portal
    • Directed the migration of Turtle Wax’s international sites from Sitefinity to Umbraco, delivering a modern, flexible platform with improved performance and reduced licensing costs.
    • Developed distributor portals integrated with SharePoint, creating a custom indexing solution to enhance search speed and document syncing, thereby boosting operational efficiency.
    • Coordinated cross-team collaboration to ensure seamless launch with zero downtime and comprehensive editor training.
    paper STADA - Multi-site, multi-lingual & multi-theme solution
    • Designed and developed a scalable multilingual Umbraco boilerplate supporting over 100 localized websites, ensuring brand consistency across international markets.
    • Engineered automated deployment pipelines with parameterised builds, accelerating rollout timelines and reducing operational overhead.
    • Collaborated with project managers and stakeholders to align technical execution with evolving business goals while enforcing high-quality coding standards.
    paper Lovima - Age Verificaition Check
    • Developed and integrated an age verification check into the checkout process for their Umbraco-powered e-commerce site.
    • Lovima supplies female contraceptive pills online and through pharmacies, so the solution ensured compliance with legal requirements while maintaining a smooth customer experience.