Next Mountain Development

Custom Software Development Services

Explore our software development services

Full-stack development, delivered in clear stages.

Nine practices that combine into one project. Most builds touch three or four of them — design and prototyping to set the line, a web or mobile app as the product, integrations and AI to make it worth paying for.

01 Start here

Design & prototyping

Clickable prototypes, product design and a scoped plan — so you can see and test the whole build before committing budget to it.

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02 The product itself

Custom web app development

The core product: a fast, secure web application built on a modern stack, shaped around your actual workflow instead of a template you have to bend into.

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03 Native · Cross-platform

Native iOS & Android apps

Native and cross-platform mobile apps for customers and crews in the field — built to survive bad signal, old devices and real conditions.

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04 Idea → paying users

SaaS platforms & MVP builds

Multi-tenant SaaS with billing, onboarding and admin — or a deliberately narrow MVP that proves the idea before you spend the rest of the money.

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05 Make the stack talk

API & systems integration

Integrations between the systems your business already runs — payments, accounting, CRM, logistics, legacy databases — plus the APIs other people build against.

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06 Useful, not decorative

AI & LLM feature development

Retrieval, drafting, classification and assistants built into your product where they actually save time — with costs and failure modes you can see.

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07 Sell & scale

E-commerce & marketplaces

Custom storefronts, subscription commerce and multi-vendor marketplaces — including the payouts, inventory and fulfilment logic platforms won't do for you.

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08 Ops & visibility

Internal tools & dashboards

Operations tooling, admin consoles and dashboards that replace the fragile spreadsheet only one person understands.

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Sister company

HIPAA-compliant development

Handling PHI? The same engineers deliver it under HipaaSoft's compliance program — BAAs, audits and all.

Meet HipaaSoft →

Not sure which fits?

Tell us what you're building. We'll scope it out in one conversation — and tell you plainly if you don't need us yet.

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Industry-specific builds

We shape every service to the industry you're in.

A field-service app and a nonprofit donor portal share almost no requirements. See how each practice adapts on the industries page.