Marketing websites
Fast, accessible websites — from structure and design through production deploy. Responsive layout, core SEO and performance baseline, and documentation for updates your team can maintain.
Duration2–6 weeks
Rio Grande Valley, Texas · Web design & systems
Design range backed by production engineering.
OA Systems builds marketing sites, web applications, and integrations for clients who need work that holds up under real use—and proves that discipline by shipping and operating our own SaaS in production.
Available for new projects
What we build
Services
Web applications
Dashboards, customer portals, admin tools, and other browser-based applications tied to a real workflow — UI design, application logic, API integration, and deploy pipeline as scoped.
Duration6–16+ weeks
Systems & integrations
Connecting tools you already use — APIs, automation, data sync, and lightweight backends that remove manual work, with error handling, logging, and handoff documentation.
Duration2–12 weeks
Why trust us
Credibility
Founder
Omar Calzada
The kind of software where accuracy, auditability, and reliability are non-negotiable.
Omar Calzada leads OA Systems with seven years of professional software development experience building production systems for Texas state government and regulatory agencies.
That work has included high-fidelity, secure web applications and internal systems used in regulated, public-facing contexts — custom platforms for state licensing boards, credentialing programs, and compliance-driven agencies across healthcare and professional regulation.
Client work at OA Systems applies the same standard: whether the project is a marketing site or a production web system, the goal is software that is secure, precise, and built to hold up under real use — not demo-quality work that falls apart after launch.
- Years in production engineering
- 7+
- Production infrastructure
- AWS
How we work
Process
01
Inquiry
Reach out by email, phone, or WhatsApp with what you want to build, any references, and a rough timeline or budget band.
02
Scope
We respond with what we would build, what is explicitly out of scope, and a timeline range — before any build starts.
03
Build
Design and engineering in focused iterations; you see progress at agreed checkpoints.
04
Ship & handoff
Deploy, documentation, and a clean transfer so you are not dependent on us for every change. Support arrangements can be scoped separately.
Product proof
Trakr
Trakr is observability for AI agent workflows — cost per run, failure alerts, loop detection, and run analytics for teams running LLM-powered agents in production.
- Runs today
- 1,284
- Cost per run
- $0.04
- Failure rate
- 0.8%
- Avg. latency
- 2.1s
Recent runs
run_parse_inputParse input
success120ms$0.04run_llm_completionLLM completion
running1840ms$0.04run_tool_invocationTool invocation
loop320ms$0.18run_validationValidation
success180ms$0.04run_persist_resultPersist result
error95ms$0.18run_emit_metricsEmit metrics
success45ms$0.04Run latency breakdown
Parse input120ms
LLM completion1840ms
Tool invocation320ms
Validation180ms
Persist result95ms
Emit metrics45ms