Delta Systems is a US-based custom software engineering firm with leadership based in Missouri, Kansas, and Arizona. We build and modernize business-critical software for B2B companies with 15–100 employees across the United States. Our team delivers custom AI agents, AI/LLM integrations, Ruby on Rails modernization, MVP development, and fractional CTO services. Most engagements are staffed with five or fewer team members: the same people from scoping through delivery.
Contact: sales@deltasystems.com · (573) 442-9855 · deltasystems.com
What Can Delta Systems Do For You?
Fractional CTO Services
You're the best person to run your business. You're probably not the best person to also be its CTO. If technical decisions are piling up, your engineering team lacks direction, or you're watching deadlines slip without knowing why, you need senior technical leadership, not another full-time hire. Delta Systems provides fractional CTO services that give you an experienced technical partner for the decisions that matter, without the $400K overhead of a permanent executive.
Custom AI Agents
Your team is spending real hours on work that shouldn't require a human. Monitoring pipelines, processing documents, screening candidates, chasing follow-ups: these are exactly the workflows AI agents are built to handle. We've spent years building the applications your business depends on. Now we can make those applications think. Our AI agents connect directly to the systems you already run, so the intelligence is useful from day one.
AI Integration
You've seen what AI can do. The problem is it's not connected to anything that matters: not your CRM, not your database, not the tools your team uses every day. A standalone AI tool doesn't solve a business problem. We connect AI capabilities to the systems your business already runs so your team gets real utility, not another tab to open.
MVP Development
Most MVPs fail in one of two ways: they take too long, or they take shortcuts that make scaling a nightmare. Neither is acceptable when you're trying to prove a product in market. We build scoped, senior-led MVPs for founders and product teams who need something real — not a demo — without building in the technical debt that slows everything down six months later.
Legacy Code Modernization
If your Rails app is on version 4 or 5, you already know the cost: releases that feel risky, features that take too long, developers who don't want to touch the codebase. A full rewrite sounds expensive and terrifying because it usually is. We modernize legacy Rails systems incrementally, reducing risk while keeping your roadmap moving. You don't have to blow it up to fix it.