Custom Software Development
Software built by the senior team you thought you couldn't hire.
Zantise is a custom software development company for products where off-the-shelf stops being an option: platforms that carry your revenue, internal systems your operations depend on, and products where AI is a capability — not a marketing line.
Teams are small and senior by design. The engineers who scope your product are the ones who build it, and the architecture decisions are made by people who will still be accountable for them a year later.
- median engineer experience on client work
- 12+ yrs
- median engineer experience on client work
- sprint cadence with shipped, reviewed increments
- 2 wks
- sprint cadence with shipped, reviewed increments
- uptime across systems we operate
- 99.98%
- uptime across systems we operate
What we build
Where this engagement earns its keep.
Product engineering
Web platforms, APIs, and data systems taken from first architecture sketch to production — TypeScript, Python, and cloud-native infrastructure with CI/CD and observability from the first sprint.
AI-native product development
Products designed around model capabilities from the start — copilots, intelligent search, document understanding — with the eval and fallback engineering that separates a feature from a liability.
Platform modernization
Incremental replacement of legacy systems while the business keeps running — strangler-pattern migrations, data-layer rebuilds, and the removal of the single point of failure everyone's afraid to touch.
Dedicated product teams
A stable pod — engineers, designer, product lead — that ships your roadmap quarter after quarter, with direct Slack access to the people writing the code. No account-manager telephone.
Common questions
Asked by every buyer who's been burned before.
What does your typical engagement look like?
A two-week paid discovery produces architecture, backlog, and a fixed-range quote. Then a dedicated pod ships in two-week sprints, with a demo and honest status every sprint — including the news you'd rather hear early.
Which technologies do you specialize in?
TypeScript/React/Next.js and Python services on AWS or GCP, Postgres-first data layers, and infrastructure as code. We standardize where it buys reliability and stay flexible where your stack demands it.
Do you take over existing codebases?
Yes. We start with a two-week technical audit — architecture, security posture, deployment pipeline, bus-factor risks — and return a stabilization plan before committing to a roadmap. No rewrite-everything reflexes.
How do you handle IP and confidentiality?
You own everything we produce — code, designs, documentation — assigned in the master services agreement. NDAs before discovery, and your code never appears in a portfolio without written consent.
Tell us what should stop being manual.
A 30-minute scoping call with an engineer — you'll leave with a candid read on feasibility, cost, and whether AI is even the right answer.