Razonity

Razonity LLC · Software development studio

We build the software your business runs on.

We design, build and operate mobile apps, web applications and websites, with AI integrated where it genuinely makes a difference. Senior engineers, serverless infrastructure, and one team from first call to launch and beyond.

  • Senior engineers only
  • Serverless on AWS
  • You own the code

Built with

  • AWS
  • React
  • React Native
  • TypeScript
  • Python
  • Claude
  • DynamoDB
  • CloudFront
  • Serverless

What we build

Four things, done properly.

Most projects need more than one of these. Because one team builds all four, the app, the back end and the site are designed together and stay that way.

Mobile apps

iOS and Android from one codebase. React Native apps that feel native, ship through both stores, and share their logic with your web product.

  • iOS and Android from a single codebase
  • App Store and Google Play submission
  • Push notifications, offline mode and sync
  • Analytics and crash reporting from day one

Web applications

SaaS platforms, customer portals, internal tools and dashboards. React front ends on serverless AWS back ends that scale from zero to whatever comes.

  • SaaS and multi-tenant platforms
  • Customer, partner and employee portals
  • Admin tools that replace the spreadsheet
  • APIs and integrations with the systems you already run

Websites

Marketing sites and landing pages that load instantly, rank well and convert. Pre-rendered and served from a CDN, with no server to patch.

  • Marketing sites and landing pages
  • Search-ready: structured data, sitemaps, fast Core Web Vitals
  • Content you can edit without calling us
  • Accessible by default, measured before launch

AI integration

Assistants, agents and automation built on frontier models, grounded in your own data, and shipped with the guardrails production needs.

  • Chat assistants and copilots inside your product
  • Agents that run multi-step workflows
  • Document understanding and data extraction
  • Evaluation, monitoring and guardrails, not just a prompt

How it works

A process you can see from the outside.

Working software every week, decisions written down, and a launch that runs as a checklist. Nothing about the project should be a surprise, including the end of it.

  1. 01

    Discover

    A short, structured conversation about what you need, who it is for and what success looks like. You leave with a written scope, not a sales pitch.

  2. 02

    Design

    Flows, screens and the data model before any code. Clickable prototypes where they help, so the expensive decisions get made while they are still cheap.

  3. 03

    Build

    Working software on real infrastructure, demonstrated every week. No big reveal at the end, and no surprises in it.

  4. 04

    Launch

    Store submissions, DNS, monitoring, documentation, handover. Launch is a checklist we run, not a day we hope goes well.

  5. 05

    Grow

    Measure what people actually do, then build what the data says is next. We stay on as the team that knows the codebase.

Why Razonity

Built the way we would want it built for us.

Small, senior and direct. The way we work is the product as much as the code is.

Senior engineers, end to end

The people you talk to are the people who design, build and ship it. There is no handoff to a bench you never meet.

Serverless by default

Built on AWS Lambda, DynamoDB and CloudFront: nothing to patch, costs that scale with use, and infrastructure that shrugs off a traffic spike.

AI where it earns its place

We ship AI features when they change the outcome for your users, and we will tell you plainly when they would not.

You own everything

Your code, your cloud account, your data. Handed over documented and deployable, with no dependency on us to keep it running.

Security built in, not bolted on

Least-privilege access, encryption at rest and in transit, and tenant isolation designed into the data model from the first table.

One point of contact

A written scope, a weekly demo and a single person who answers. You always know where the project stands and what happens next.

Typical engagements

The shapes most projects take.

Every project is different, but most requests arrive as one of these. If yours does not, that is usually the interesting kind.

Web applicationMobile appIntegrations

A customer portal for a service business

Self-service accounts, scheduling and payments in a responsive web app, with a mobile companion that shares the same API.

Web applicationAutomation

The internal tool that replaces the spreadsheet

The workflow your team actually runs on, rebuilt as a proper application with roles, audit history and the integrations the spreadsheet never had.

AI integrationWeb application

An AI assistant grounded in your own data

A copilot that answers from your documents and systems, with citations, permissions and monitoring, inside the product your customers already use.

Have a project in mind?

Tell us what you are building. We will come back with questions, a rough approach and a clear next step.

Contact

Let's build it.

Tell us about the project: what it is, who it is for and when you need it. We read every message and usually reply within one business day.

What happens next
A short call to understand the project, then a written scope with an approach, a timeline and a price. No obligation on either side until you have read it.
Company
Razonity LLC

Optional.

What it is, who it is for, and when you need it. Rough is fine.

We use what you send us only to reply to you.