kids lying on a glass land and smiling

Software built with intent.

Software built with intent.

Software built with intent.

No Half Measures.

I build software with speed, discipline, and total commitment. Every decision is deliberate, and nothing ships half-finished.

I build software with speed, discipline, and total commitment. Every decision is deliberate, and nothing ships half-finished.

What I do

I design, build, and ship production-ready software across a range of systems.

image of an invoice
image of an invoice
image of an invoice

I’m a full-stack .NET developer at DOJO, building and maintaining high-scale fintech systems where reliability actually matters.

I’m a full-stack .NET developer at DOJO, building and maintaining high-scale fintech systems where reliability actually matters.
PACT Mobile App
PACT Mobile App
PACT Mobile App

Proficient in mobile development with real world constraints in mind.
Scalable, Reliable & Intuitive.

Proficient in mobile development with real world constraints in mind.
Scalable, Reliable & Intuitive.

Backend & APIs

Scalable, secure backend systems built with long-term maintainability in mind; clean architecture, well-defined APIs, and production-grade reliability.
(.NET, REST APIs, authentication, integrations)

Web Applications

Modern, responsive web applications designed for real users and real constraints; performance, accessibility, and clarity come first.
(Angular, modern frontend patterns, SSR where it matters)

Mobile Applications

Production-ready mobile apps built from UX to deployment; designed to scale, perform, and hold up under real-world usage.
(Flutter, Firebase, end-to-end app delivery)

Product & Systems Thinking

Product & Systems Thinking

Beyond just code; shaping requirements, challenging assumptions, and making technical decisions that support the product long-term.
(Architecture, trade-offs, technical ownership)

Technical ownership you can rely on

Great software starts with aligned goals and clear execution. I take ideas from concept to production, ensuring strong communication throughout.

Great software starts with aligned goals and clear execution. I take ideas from concept to production, ensuring strong communication throughout

Great software starts with aligned goals and clear execution. I take ideas from concept to production, ensuring strong communication throughout

two people looking at a tablet and smiling

Full-stack ownership

From backend API's to mobile interfaces, I handle the complete technical lifecycle for your product. No gaps, stop-gaps, or third parties - just end-to-end delivery

  • .NET Backend services

  • Mobile development in Flutter

  • GCP & Kubernetes cloud infrastructure

  • SQL & NoSQL Database proficiency

two people looking at a tablet and smiling

Full-stack ownership

From backend API's to mobile interfaces, I handle the complete technical lifecycle for your product. No gaps, stop-gaps, or third parties - just end-to-end delivery

  • .NET Backend services

  • Mobile development in Flutter

  • GCP & Kubernetes cloud infrastructure

  • SQL & NoSQL Database proficiency

two people looking at a tablet and smiling

Full-stack ownership

From backend API's to mobile interfaces, I handle the complete technical lifecycle for your product. No gaps, stop-gaps, or third parties - just end-to-end delivery

  • .NET Backend services

  • Mobile development in Flutter

  • GCP & Kubernetes cloud infrastructure

  • SQL & NoSQL Database proficiency

husband and wife working happily on a laptop

Built for production

Currently shipping fintech systems @ DOJO - the UK's leading payments provider. I understand scale, reliability, and what it takes maintaining high-impact systems.

  • Reliability for high traffic scaled systems

  • Expertise on latest error logging + pod monitoring

  • In-depth understanding of real-world constraints and scalable architecture

husband and wife working happily on a laptop

Built for production

Currently shipping fintech systems @ DOJO - the UK's leading payments provider. I understand scale, reliability, and what it takes maintaining high-impact systems.

  • Reliability for high traffic scaled systems

  • Expertise on latest error logging + pod monitoring

  • In-depth understanding of real-world constraints and scalable architecture

husband and wife working happily on a laptop

Built for production

Currently shipping fintech systems @ DOJO - the UK's leading payments provider. I understand scale, reliability, and what it takes maintaining high-impact systems.

  • Reliability for high traffic scaled systems

  • Expertise on latest error logging + pod monitoring

  • In-depth understanding of real-world constraints and scalable architecture

person writing on a piece of paper

Concept to launch

Founded & Built PACT, my own app, from the ground up. I make both product and technical decisions that drive the most value, iterate on feedback, and adapt to live environments

  • Product Strategy

  • Technical Execution

  • Continuous Iteration

person writing on a piece of paper

Concept to launch

Founded & Built PACT, my own app, from the ground up. I make both product and technical decisions that drive the most value, iterate on feedback, and adapt to live environments

  • Product Strategy

  • Technical Execution

  • Continuous Iteration

person writing on a piece of paper

Concept to launch

Founded & Built PACT, my own app, from the ground up. I make both product and technical decisions that drive the most value, iterate on feedback, and adapt to live environments

  • Product Strategy

  • Technical Execution

  • Continuous Iteration

Start a conversation

Tell me what you want to build. Let's work together and make it a reality.

:Get in touch at calumfeenan@resolvedevelopment.dev or fill the form below

kids lying on a glass land and smiling

Building for teams who want to get a project done all the way.

Built with intent. No half measures.

Get In Touch

Building for teams who want to get a project done all the way.

Built with intent.
No half measures.

Get In Touch

Building for teams who want to get a project done all the way.

Built with intent. No half measures.

Get In Touch