App & Software Development
Red Key designs, builds and runs custom software: web apps, mobile apps, AI agents and integrations for companies in Westchester, New York City, Connecticut, Los Angeles, Florida and nationwide. One team from strategy through launch, plus the managed support that keeps it running.
We plan it, design it, build it with an AI-first approach, and then run it as part of your managed IT.
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We start with the business outcome: revenue, cost, time saved. Then we work backward to a roadmap that ships the highest-value pieces first. No 40-page spec before you see anything working.
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Agents, copilots and workflow automation designed and deployed alongside the people who do the work, on Microsoft Copilot, ChatGPT, Claude or a model of your choosing, with security and data governance built in.
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We plan, build and maintain the systems your business runs on. Execution is the reputation: code that ships, holds up in production and hands off clean.
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We get to know your customers and end users, then design clean, modern interfaces people actually enjoy using, validated with real users before a line of production code is written.
Small, reversible increments. You see something working in weeks, not quarters, and every step is measured against the business goal we agreed on at the start.
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We map the workflow, the users and the numbers behind it, then define what “done” looks like.
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Clickable prototypes and a lean roadmap, validated with the people who will use it every day.
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AI-first engineering in short sprints, with security, QA and documentation baked in from day one.
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Cloud setup, integrations, data migration and training. A clean handoff to your team, or to ours.
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Monitoring, patching, support and a roadmap of improvements as part of your managed IT.
Health, security and efficiency scores, tickets, proposals, projects, IT plans, Microsoft 365 licensing and budgets, all in one place on every device. Designed, built and operated by the same team that will build for you.
Purpose-built software for the way your business actually runs. Here are the ones we get asked for most.
Self-service portals that replace email threads and spreadsheets with one source of truth.
Apps for crews, technicians and property teams that work on-site, offline and on any phone.
Intake, document handling, reporting and approvals that run themselves, with a human in the loop.
Connect Microsoft 365, ConnectWise, QuickBooks, Yardi and line-of-business systems into live dashboards.
Invoicing, payment processing, reconciliation and reporting tools built to bank-grade security standards.
Appointment, dispatch and resource scheduling apps with reminders, calendars and payments built in.
Order management, inventory tracking and warehouse tools that talk to your accounting and shipping systems.
Secure intake, e-signature, approvals and audit trails for HIPAA, financial and legal environments.
Modern, mainstream and Microsoft-friendly. We choose the stack that fits the goal and that your team, or ours, can support for years.
Fast, accessible interfaces for web and mobile.
Services and data layers built to hold up in production.
Secure hosting with identity, secrets and CI/CD done right.
Agents and copilots grounded in your own data.
Apps and automation inside the tools your team already lives in.
Connect the line-of-business systems you already run.
Every project is staffed with the specialists it needs, from the first strategy session through launch and ongoing support. One accountable team, no hand-offs between vendors.
Defines the business outcome, the roadmap and what to build first so every sprint moves a real number.
Owns the schedule, budget and communication, so you always know what shipped, what is next and what it costs.
Turns how your team actually works into clear requirements, user stories and acceptance criteria.
Builds the interfaces, APIs and data layers, and writes code that ships, holds up in production and hands off clean.
Designs and deploys agents, copilots and automations grounded in your data, with guardrails and governance built in.
Automated test suites and release checks that catch regressions before your users do.
Designs the Azure hosting, identity, secrets and CI/CD pipeline so the app is secure, scalable and cost-aware from day one.
Reviews code, dependencies and configuration against HIPAA, SOC 2 and financial standards, with pen testing before launch.
Strategy, design, engineering, hosting, security and support: one accountable team from the first whiteboard to year five in production. No hand-offs between vendors.
Established stack or blank page, we integrate with what you have and pick the tools that fit the goal. Microsoft-first where it makes sense, never dogmatic.
Our cybersecurity practice reviews every build. We work daily in HIPAA, financial-services and legal environments, so data protection is a default, not an add-on.
We use AI to move faster and build AI into what you get: agents, copilots and automation designed around how your team actually works.
Our helpdesk has supported business software for more than two decades. That experience shapes what we build, and the same team stands behind it after launch.
Based in White Plains, serving New York City, Westchester, Connecticut and nationwide since 2002. Meet the people building your product in person.
Building software that handles customer data means your buyers will ask for SOC 2, HIPAA or PCI. We design the controls into the architecture from day one, run the security program alongside your build, and get you audit-ready without slowing the roadmap down.
Identity, encryption, logging and access reviews designed into the app and the cloud it runs on.
Written policies, automated evidence collection and a single place your auditor can review.
Risk assessments, vendor reviews and the people controls that frameworks expect.
Gap assessment, remediation plan and support through the Type 1 and Type 2 audit.
Pick a 30-minute discovery call with Red Key below, or call us at (914) 930-6872.