We build software that
runs real businesses
SDS is a software studio. We ship our own SaaS products — like TallyTill — and design, build, and integrate custom .NET, Azure, and AI systems for clients who need senior engineering, not a committee.
TallyTill — AI self-checkout for micro-retail
You grew it. Get paid for it.
A Stripe-powered self-checkout that runs on an Android tablet the merchant already owns. Shoppers scan a barcode or hold an item up and tap once for AI to identify it, then pay on the spot — staffed or completely unattended. No dedicated cashier, no proprietary hardware.
- Runs on a tablet you already own — nothing to buy
- Customer-initiated AI recognition, plus barcode & QR scanning
- Stripe payments, cash & check, and unattended kiosk mode
A product company that also builds yours
Two ways we work — and each makes the other sharper.
Products
We build and operate our own SaaS — so we ship production software, not slide decks.
- TallyTill — AI self-checkout for micro-retail (flagship)
- Runs on a tablet the merchant owns — Stripe payments, unattended kiosk mode
- Multi-tenant architecture, payments, AI, offline sync — in production
Consulting & Integrations
Senior engineering for hire — custom apps, cloud architecture, AI, and systems integration.
- .NET / C# apps, APIs & legacy modernization
- Azure architecture, DevOps & Bicep IaC
- AI & LLM integration (Claude, OpenAI, MCP, agents)
- Integrations — payments, identity, and third-party APIs
- Full-stack web — Angular / React on .NET
Selected engagements
Production systems we've delivered for clients across insurance, manufacturing, and government.
Trident Reciprocal — Cloud-Native Insurance Platform
Senior engineering on a ground-up, cloud-native insurance management system in production today — backend APIs, three Angular 19 portals, Azure infrastructure via Bicep IaC, and Azure DevOps CI/CD, with five Azure Functions and integrations spanning Auth0, Stripe, Documenso, Federato, Snapsheet, Verisk, CardPointe, MailGun, and USPS.
Jabil — InControl Big Data Dashboard
Architected and led a real-time supply-chain visibility platform serving Jabil's global operations — a rich, responsive application supporting thousands of users across business units.
City of Tallahassee — LEADS Law Enforcement Application
Led development of the LEADS application used daily by the Tallahassee Police Department, including an ML.NET machine-learning solution to improve person-identification accuracy.
Founded & led by Roy Lawson
A boutique studio means you work directly with the person doing the work.
Roy Lawson
SDS is led by Roy Lawson — a senior software architect and full-stack .NET developer with 25+ years delivering enterprise-grade systems across insurance, healthcare, government, finance, and retail. Over the past year that expertise has gone deep on AI: integrating large language models into .NET applications, building agent systems with the Claude Agent SDK, and using AI-assisted development to ship faster without sacrificing quality. No account managers, no ticket hand-offs — direct access to the engineer.
Let's build something
Need a product partner, or senior engineering for a hard problem? Reach out — you'll talk directly to the engineer who does the work, not an account manager.
Roy Lawson · Founder & Principal Architect · Software Development Services, LLC · St. Petersburg, Florida