Skip to content

Custom software

Have something bigger in mind? We'll build it.

We build custom websites, apps, software platforms, and business systems. You bring the idea. We bring the engineering team.

Integrations from $4,500. Portals & platforms from $22,500. Fixed quote with milestones before we start.

Talk to an engineerWhat we build
Founders

AI-built MVP → real product

You got a prototype off the ground with AI. We turn it into something you can charge for.

MVP Rescue →
Mid-market

Systems that keep up with growth

Portals, internal tools and integrations for companies that outgrew off-the-shelf software.

Enterprise teams

Extra hands that ship

A senior squad for a business unit or initiative — working inside your standards, reviews and security process.

What we build

The heavy stuff.

Customer & partner portals

Secure logins, documents, billing, status tracking — the stuff your clients live in.

Internal operations platforms

Replace the spreadsheet-and-sticky-note empire with one system your team trusts.

SaaS products

Multi-tenant apps with subscriptions, roles, admin panels and analytics.

Integrations & data pipelines

Make your CRM, ERP, finance and ops tools finally talk to each other.

AI in production

Agents, copilots and automations wired into real systems — with guardrails, logs and human approval.

Legacy modernization

Move off the system everyone's afraid to touch, without stopping the business.

how we build

No black box. Weekly proof.

You see working software every week, and nothing ships without your OK.

From idea to launch

Live. Your team owns every line

TriggerYou bring the idea
Scope + fixed quoteScreens, data, milestones
Weekly buildsClick through on staging
You approve each milestone
Launch + support
  1. 01

    Discovery

    We learn the business before the code: users, workflows, constraints, the stuff nobody wrote down.

  2. 02

    Architecture

    Data model, integrations, security and hosting decided on paper — before they get expensive.

  3. 03

    Sprints

    Weekly builds you can click through on staging. You see progress, not status reports.

  4. 04

    Launch

    Planned cutover, monitoring live on day one, rollback ready. No big-bang surprises.

  5. 05

    Run & evolve

    We stay on as your team, or hand off with docs your people can actually use.

Engineering standards

Enterprise habits. Startup speed.

  • Code review on every changeNo solo cowboy commits. Another senior engineer reads it before it ships.
  • Automated testsThe stuff that makes money — auth, payments, data — gets tests that run on every push.
  • Staging before productionYou see it, click it and approve it before your customers ever do.
  • CI/CD pipelinesRepeatable, boring deploys. Boring is the goal.
  • Monitoring & alertsWe know it broke before your customers email you.
  • Security by defaultLeast-privilege access, secrets out of the code, permissions designed in from day one.
  • You own everythingYour repo, your cloud accounts, your data. No hostage situations.
  • Docs a human can readArchitecture notes, runbooks and handoff docs your next hire can actually use.

Case studies

Enterprise-grade, from the ground up.

// case study · InvestorBootz

From a legacy system to a proprietary, multi-tenant platform.

InvestorBootz coordinates on-site property work for real estate investors nationwide. They were running on an old legacy system. We designed and built the proprietary, enterprise-grade, multi-tenant platform that replaced it.

  • Platform architecture
  • Full-stack engineering
  • Multi-tenant SaaS
  • Legacy replacement
Read the case study
investorbootz.com
InvestorBootz screenshot

Ways to work together

Pick the model that fits.

Fixed-scope project

You know what you need built.

Clear scope, clear milestones, quote up front. Great for an MVP rebuild, a portal or a big integration.

Embedded partnership

You need a team, not a project.

Our engineers work as your tech team in weekly sprints. Roadmap, build, run, repeat.

CTO-as-a-Service

You need someone senior steering the ship.

Architecture, vendor picks, roadmap and hiring decisions — from someone who's built it before.

Want the embedded-team details? See partnerships.

Shipped

Live products. Click and see.

All our work →

FAQ

Before you ask.

Talk to an engineer
How big of a company do you work with?
Our sweet spot is growing companies — roughly $2M to $50M+ in revenue — plus enterprise teams who need a senior squad for a specific business unit or initiative.
Can you work inside our security and review process?
Yes. We work in your repos, follow your branching and review rules, use your SSO and access controls, and support your security review. Tell us your requirements up front and we design for them.
Fixed price or time and materials?
Both. Well-defined projects get a fixed quote with milestones: integrations start at $4,500 and custom portals and platforms start at $22,500. Ongoing work runs as an embedded partnership with a weekly sprint cadence.
Do you work with our existing developers?
Happily. We can lead, support or augment your in-house team — and leave them stronger with docs and clean architecture.
Where is the team?
InnoStak is based in Spring, TX, in the Greater Houston area, and works with clients across the US.