Service
Custom software development, built to scale from day one
Web apps, dashboards, backends, and APIs built on a production-grade stack, not a template.
KeenCraft builds custom full-stack software for growing businesses: customer-facing web apps, admin dashboards, APIs, and backends on React, Next.js, Python/FastAPI, and Node.js. Engagements are fixed-price and milestone-gated, using the same production stack shipped for FinTech, healthcare, and marketplace clients.
Custom Software & Full-Stack Development
End-to-end web and backend engineering using React, Next.js, Python/FastAPI, and Node.js: the same stack used to ship live, revenue-generating platforms for FinTech, healthcare, and marketplace clients. You get a system that's architected to scale from day one, not a prototype that needs a rebuild the moment real users show up.
Best fit for
Founders and operators who need a real product built once, correctly, not a patchwork of contractors.
What's included
- Customer-facing web apps & internal admin dashboards
- Backend architecture, REST/GraphQL APIs, and database design (PostgreSQL, Redis)
- Mobile app builds from scratch (as delivered for SRN Trade AI)
- Cloud deployment & infrastructure on AWS (EC2, ECS), Docker, Supabase
Questions about this service
What does KeenCraft build under custom software development?+
Web apps, internal dashboards, REST/GraphQL APIs, database design on PostgreSQL and Redis, mobile apps from scratch, and cloud deployment on AWS, Docker, and Supabase.
Is custom software priced hourly or fixed?+
Fixed-price. You get a written Statement of Work with milestones and a total cost before any code is written. New work is scoped separately, not added silently to the invoice.
Who actually writes the code?+
The KeenCraft engineering studio that designs the system also ships it. There is no account-manager handoff to a bench of junior contractors you never meet.
Who is this service for?+
Founders and operators who need a real product built once, correctly, not a patchwork of contractors or a template that has to be rebuilt when real users show up.
Other services
AI Voice Agents & Conversational AI
Inbound and outbound voice agents that answer calls, book appointments, and follow up 24/7, without a call center.
Automation & CRM / API Integrations
Connect the tools you already use so work stops falling through the cracks between systems.
Data & Backend Architecture
Caching, pipelines, and analytics-ready infrastructure that stays fast and correct as you scale.
Ready to build something that saves you money from day one?
Book a free 30-minute call. Tell me what you're trying to build or fix, and I'll tell you honestly whether KeenCraft is the right fit and what it would take.