Brooks Computing Systems - Jacksonville
Reliable software development, legacy modernization, mainframe computing, and AI-enabled solutions for businesses that need stable, production-ready results.
We help organizations modernize systems without losing the reliability they depend on. The focus is practical engineering, clear communication, and long-term support.
Software, Mainframe, and AI Services in Jacksonville
Brooks Computing Systems provides consulting and contracting services for organizations that depend on mainframe, COBOL, and CICS workloads. Every engagement is scoped around three things: practical engineering, clear communication, and support that continues after go-live.
Custom Software Development
Full-stack development for web applications, APIs, databases, and secure deployments. We build business applications that are maintainable long after the initial release, not just functional on the day they ship.
COBOL Modernization and Maintenance
Enhancement, maintenance, batch processing, and integration work for production COBOL. We work inside systems that are still earning their keep, improving them in place rather than rewriting what already works.
CICS Consulting and Performance Tuning
Transaction flow design, performance tuning, troubleshooting, BMS map work, and modernization. When a CICS region degrades under load, the cause is usually in how a flow navigates the system rather than in the system itself.
CICS modernization service details and CICS performance tools.
z/OS Mainframe Computing in the Cloud
Access enterprise z/OS mainframe computing in the cloud for $5.50 per hour. You get the processing power and reliability of a traditional mainframe without the capital investment, the physical infrastructure, or the specialized facilities that come with owning one.
AI Integration and Workflow Automation
Private AI and retrieval-augmented generation (RAG) enablement, plus workflow automation that fits your existing security requirements. Our environment runs the latest release of Ollama with 24 locally deployed large language models, so answers can come from your own documents without sending that data to a third-party service.
AI automation service details and local RAG system with Ollama.
Legacy System Modernization
We modernize systems without losing the reliability you already depend on. Work is delivered incrementally, with documentation and integration paths, so operations continue while underlying platforms are updated. Most engagements run on-site or remote as your team prefers.
System integration service details and our mainframe modernization approach.
About the Founder
Arch Brooks has authored computer software for over fifty years. He is a certified Nuclear Engineer who holds the required licenses to develop software supporting the construction, maintenance, and operation of nuclear-fueled power plants throughout the continental United States — 48 years of licensed nuclear-industry software work.
That background is why the emphasis here is on systems that have to keep working. Mainframe and CICS work rewards someone who understands both the transaction processing and the engineering consequences of changing it.
Learn more about Mr. Brooks' qualifications, view his LinkedIn profile, and read his Substack.
Frequently Asked Questions
What does Brooks Computing Systems do?
We build and maintain business software, with a focus on mainframe, COBOL, and CICS systems that are still in production. That covers custom application development, legacy modernization, z/OS mainframe computing, and private AI and RAG integration.
Where is Brooks Computing Systems located?
We are based in Jacksonville, Florida, and work on-site or remote depending on what the project needs. Many engagements are delivered remotely for clients outside the area.
Do you work with COBOL and CICS systems?
Yes — that is the core of the practice. For COBOL we handle enhancements, maintenance, batch processing, and integration work. For CICS we handle transaction flow design, performance tuning, troubleshooting, BMS map work, and modernization.
How do you modernize legacy systems without disrupting operations?
Work is delivered incrementally rather than as a single replacement. Each step is documented and integrated into what is already running, so your systems stay in service while the underlying platform is updated.
Can I get access to z/OS mainframe computing without buying a mainframe?
Yes. Enterprise z/OS mainframe computing is available in the cloud for $5.50 per hour. You get the processing power and reliability of a traditional mainframe with no capital investment, physical infrastructure, or specialized facilities.
Can you use AI without sending our data to an outside service?
Yes. A local RAG system keeps your data private while still producing fast, accurate answers from your own documents. Our environment runs the latest release of Ollama with 24 locally deployed large language models, giving you low-latency, secure, and scalable AI support.
How is AI used in CICS work?
To speed up delivery while keeping changes safe and auditable — assisting with COBOL and BMS analysis, refactoring support, documentation, test-case generation, and user-facing training content. It is especially useful when modernizing legacy transaction flows or connecting CICS workloads to modern web applications.
What industries do you work with?
Local businesses, ministries, service organizations, and enterprise teams. Systems we have authored span mortgage and installment loan management, Medicare and CRM administration, project management, financial operations, and multi-congregational and pastoral work.
Who actually works on my project?
You work directly with Arch Brooks, the founder, rather than being handed to a junior team. He brings over fifty years of software authoring and 48 years of licensed nuclear-industry engineering software experience.
How do I get started or request a quote?
Use the contact form on this page, call 904-752-1334, or email arch@archbrooks.com. Tell us what you need and we will follow up with a practical next step. Engagements can be short-term help or long-term delivery support, from requirements through production.
Consulting & Contracting Services
Short-term help or long-term delivery support—from requirements to production.
Systems Designed and Authored At Brooks Computing Systems
We are able to develop expert systems for your organization.
Talk to a developer who can modernize your systems
Tell us what you need, and we will follow up with a practical next step. For immediate contact, call or email using the links above.
6711 Boy Blue Rd
Jacksonville, FL 32210
