A professional technology firm dedicated to designing and delivering integrated computer systems and expert IT consulting services.
ANDREW S GAHAN PC is a professional services firm specializing in computer systems design, systems integration, and technology consulting. Based in Irvine, California, we serve businesses across the United States that require dependable, high-quality technical expertise.
Our work spans the full lifecycle of technology engagements — from initial discovery and architecture design, through implementation and integration, to ongoing support and optimization. We take pride in delivering solutions that are practical, scalable, and aligned with each client's specific operational reality.
Operating within the Professional, Scientific, and Technical Services sector, we bring the discipline of engineering and the clarity of consulting to every project we undertake.
Computer Systems Design & Professional Technical Services
Every engagement is shaped by a set of core principles that define how we operate and deliver.
We approach every system design with rigorous attention to detail, ensuring that what we build is accurate, reliable, and fit for purpose.
We are transparent about our methods, honest about limitations, and committed to acting in our clients' best interests at every stage.
We measure success by real outcomes — systems that perform, projects that deliver, and clients whose operations genuinely improve.
We maintain high standards for the quality of our technical work and stay current with evolving best practices in systems design and integration.
We work alongside our clients, not just for them. Collaboration, communication, and mutual respect underpin every engagement.
We take our obligations seriously — to our clients, to data privacy, to security, and to the broader professional community we serve.
Our technical and consulting capabilities extend across multiple professional and scientific sectors.
Contact us to discuss your technology challenges and how we can help.