Custom Software Development

Software built secure from the first commit

We design and build mobile apps, web applications, and APIs for organizations that cannot treat security as a later phase. The people writing your code are the people who break software for a living, so threat modeling and secure defaults are part of how we build, not a report handed to you after launch.

What We Build

Mobile, web, and the APIs that tie them together

Most products need more than one of these, and the seams between them are where problems hide. We build across the stack so the mobile client, the web app, and the API behind both are designed to trust each other correctly.

Mobile applications

Native iOS and Android, or a shared cross-platform codebase when it fits the product. We handle local data storage, transport security, and platform permissions with the same care we apply when testing other companies' apps, so sensitive data on the device is protected from the first build.

Web applications

Customer-facing products and internal tools, front end through back end. Authentication, access control across roles and tenants, and session handling are designed into the architecture rather than added once the feature list is done, because those are the parts attackers reach for first.

APIs and integrations

REST, GraphQL, and gRPC services with authorization enforced per object and per role, sensible rate limiting, and contracts your partners can build against. We treat the API as the real security boundary it is, not an afterthought behind the interface.

Why It Is Different

Security is part of the build, not a phase after it

Most software is written first and reviewed for security later, if at all. We work the other way. The same practitioners who run our penetration tests sit in the design and the code, so the ways an application gets broken are considered while decisions are cheap to change.

You still get a product built to ship on time. You also get one that has already survived the questions an attacker would ask.

  • Threat modeling during design. We map how the product could be abused before the first feature is built.
  • Secure defaults. Authentication, authorization, and data handling ship safe out of the box, not after a hardening sprint.
  • Review by people who exploit these mistakes. Code is read with an attacker's eye, not only for whether it works.
  • Dependency and supply chain checks. Third-party code is vetted and kept current as part of the pipeline.
  • A security test before launch. The finished product is tested the way we test any client system, and issues are fixed before release.
  • Documentation you can maintain. Your team receives the knowledge to run and extend the software without us.
How We Build

From first conversation to a hardened release

We deliver iteratively, with review and testing throughout, so you see working software early and there is no single risky drop at the end.

Discovery and threat modeling

We learn the product, its users, and the data it touches, then map how it could be misused so the design accounts for it from the start.

Architecture and design

We choose an architecture that holds up, define the security model in writing, and agree on scope, milestones, and what done looks like.

Build and review

Iterative delivery with code review and automated testing on every change. You see progress in working increments, not status reports.

Harden, test, and launch

We security test the finished build, fix what we find, and move to a controlled release with your team alongside us.

  • Working software you own. Source code and intellectual property transfer to you.
  • A documented architecture and security model. Written down, not held in our heads.
  • A security test of the delivered product. Findings, severity, and fixes before you go live.
  • A real handover. Your team leaves with the knowledge to run and change the system.
  • An optional support arrangement. We stay available for maintenance and future work if you want it.
What You Receive

A product you own outright, not a dependency on us

Our aim is software your team can run without us on the phone. You keep the code and the IP, you get the documentation, and any ongoing relationship is because the work is good, not because you are locked in.

Engagement Models

Ways we can work together

Scope decides the shape of the engagement. We will tell you which of these fits your situation, and say so if none of them do.

Project

Fixed-scope build

A defined deliverable, timeline, and price. Best when the product is well understood and you want a clear commitment to a result.

Embedded

Engineers alongside your team

Our engineers work inside your team for a defined period, adding capacity and security depth to work you are already driving.

Handover

Build and transfer

We build the first version to a solid foundation, then hand it to your team with the documentation and knowledge to carry it forward.

FAQ

Common questions

Do you build mobile, web, and APIs, or only one of them?

All three, and usually together. A mobile app or web front end is only as safe as the API behind it, so we prefer to build the whole path and get the trust boundaries between the pieces right rather than hand off a client that talks to an interface we never see.

Do you build from scratch or extend an existing codebase?

Both. We build new products, and we extend, refactor, or harden software you already have. If you are inheriting a codebase or preparing one for growth, we can review it first and tell you plainly what it needs.

Is security testing included, or is that a separate engagement?

A security test of the finished product is part of how we deliver, and issues we find are fixed before launch. If you want a fuller independent assessment or a recurring testing program afterward, that runs through our penetration testing practice.

Do we own the code and the intellectual property?

Yes. Source code and IP transfer to you. You receive the repository, the documentation, and the knowledge to run the software without us, whether or not you keep us on for support.

Do you offer maintenance after launch?

If you want it. We can arrange ongoing maintenance, security updates, and future work, but it is an option you choose, not a condition of the build.

Get Started

Have something to build

Tell us what you are building and who it is for. We will tell you how we would approach it, where the security risks sit, and what a realistic scope looks like.