Services
Custom Software Development
Written scope before any code. Most large builds are fixed-price, with a monthly retainer after launch. Most ship in 8–16 weeks. Full IP transfer on delivery. The code is yours, with no recurring license fee for the custom code. Ongoing maintenance and feature work are scoped and priced separately. US-based team building custom software since 2018.
What is custom software development?
Custom software development is the process of building software designed specifically for your business requirements rather than adapting off-the-shelf tools. Code and Trust builds full-stack web applications, REST APIs, mobile apps, and third-party integrations for enterprise operations teams and product founders. Every engagement starts with a written scope before work begins. Most large builds are fixed-price, with a monthly retainer after launch.
Who hires Code and Trust for custom software?
Code and Trust is the right fit when off-the-shelf software creates friction instead of removing it. Common triggers: you're paying for five SaaS tools that partially overlap, your team works around the software instead of with it, or you need logic specific enough that no vendor will build it for you.
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Companies outgrowing off-the-shelf tools: too many workarounds, too many seats
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Product founders building their first software product without a technical co-founder
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Operations teams needing internal tools not available as SaaS
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Businesses with complex workflow requirements that generic software cannot handle
What does Code and Trust build?
Code and Trust builds full-stack web applications, REST and GraphQL APIs, internal operations dashboards, and enterprise integrations.
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Full-stack web applications (React/Next.js front-end, Node.js/Python back-end, PostgreSQL)
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REST and GraphQL APIs designed for scale
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Internal operations tools and dashboards
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Third-party integrations (Stripe, HubSpot, Salesforce, QuickBooks, industry-specific ERPs)
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Data pipelines and reporting systems
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Real-time features: notifications, live updates, collaborative editing
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Federal systems: ATO and FedRAMP requirements scoped in design, Section 508 accessible interfaces
Technologies we use
Code and Trust builds on a modern, well-supported stack: Next.js and React for web front-ends, Node.js and Python for back-end services, PostgreSQL as the primary database. We choose technologies with large talent pools and long support windows, so you're never locked into an obscure framework.
Federal and public-sector software programs
We have come into public-sector work as a subcontractor through a prime contractor and by responding to RFPs. When a federal engagement calls for it, we scope the NIST 800-53 controls for an ATO, the FedRAMP baseline for a cloud system and Section 508 accessibility in the design phase, and the NIST SP 800-171 requirements when it involves CUI. Code and Trust is based in Mt Pleasant, SC, near NIWC Atlantic.
Federal software development shares the same engineering fundamentals as commercial work, but adds clearance requirements, compliance frameworks (NIST 800-53, FedRAMP, CMMC, Section 508), and government acquisition rules. Clearance requirements are confirmed per program.
How much does custom software development cost?
Custom software cost depends on scope, complexity, and integrations. Engagements range from focused internal tools to multi-team enterprise platforms. Code and Trust scopes every project and provides a written quote before any work begins. Most large builds are fixed-price, with a monthly retainer after launch.
Internal Tool / MVP
Focused scope
Single workflow, 1–3 user roles, no complex third-party integrations. 6–12 weeks.
Full Web Application
Mid-scale scope
Multi-role app with API integrations (Stripe, HubSpot, Salesforce), 12–20 weeks.
Enterprise System
Enterprise scope
Real-time features, complex data pipelines, legacy integration, 20–30+ weeks.
All estimates are starting ranges. The exact price depends on the scope document we produce during discovery. There is no estimate without a written scope. For a rough range on your project, see our project estimator.
Fixed-price vs. staff augmentation vs. project takeover
Code and Trust offers three engagement structures: fixed-price project delivery (defined scope, single price, Code and Trust builds the whole thing), staff augmentation (our engineers join your team as contractors), and project takeover (we inherit a codebase in progress and complete it).
| Model | Best for | Budget structure |
|---|---|---|
| Fixed-price project | New builds with defined requirements. Budget certainty is the top priority. | Single price at scope sign-off. Change orders only for new requirements. |
| Staff augmentation | Teams with existing engineering capacity that need specific skills added. | Monthly retainer per engineer. Scales up and down with demand. |
| Project takeover | Codebases started by another team that need to be rescued or completed. | Audit first (fixed-fee), then fixed-price continuation or rebuild. |
How the custom software development process works
Code and Trust's custom software development process has four phases: discovery, scope approval (written scope and agreed price before any code), engineering sprints (scope-agreed staging milestones), and launch plus support scoped per engagement. No code begins until the price is agreed in writing.
01
Discovery
We review your requirements, identify technical risks, and map integrations. 1–2 week process. Output: a written scope document.
02
Scope Approval
You review the written scope and price. No code begins until you sign off. Change orders only if you add requirements outside the scope.
03
Engineering Sprints
Build against the agreed scope. Prototype, staging, and deployment milestones are agreed in the written scope.
04
Launch + Support
Production deployment. Full source code and IP transfer. Post-launch support and maintenance are scoped per engagement.
More on the engagement itself: How Code and Trust runs engagements →
Frequently asked questions
The most common questions before a custom software engagement: what does fixed-price mean, who owns the code, how long does it take, can you inherit an existing codebase, and whether Code and Trust builds for federal agencies. All answered below.
How is custom software development better than SaaS?
Custom software does exactly what your operations require, nothing more and nothing less. No recurring per-seat fees, no vendor lock-in, no workarounds for features the SaaS doesn't support. Over 3–5 years, custom typically costs less than enterprise SaaS while fitting your workflow precisely.
What does "fixed-price" mean for custom software development?
Most large builds are fixed-price, with a monthly retainer after launch. On a fixed-price build, you get a written scope document with a single price before any code is written. If we estimate something incorrectly and it takes longer, the price doesn't change. Change orders only happen if you add requirements we didn't scope together.
Do we own the code Code and Trust builds?
Yes. Full source code and IP transfer to you on final payment. Take it to any team, host it anywhere. No recurring license fee for the custom code. Ongoing maintenance and feature work are scoped and priced separately.
How long does a custom web application take to build?
MVP builds run 8–16 weeks. Simple internal tools can be done in 4–6 weeks. Full enterprise applications with complex integrations run 16–24 weeks. Prototype, staging, and deployment milestones are agreed in the written scope.
Can Code and Trust take over a codebase someone else started?
Yes, it's one of our most common engagements. We audit the existing code first and give you an honest assessment. If it's worth continuing, we scope from there. If a rebuild is faster than the technical debt, we'll say so.
Does Code and Trust build software for federal agencies?
We have come into public-sector work as a subcontractor through a prime contractor and by responding to RFPs. When a federal engagement calls for it, we scope the NIST 800-53 controls for an ATO, the FedRAMP baseline for a cloud system and Section 508 accessibility in the design phase, and the NIST SP 800-171 requirements when it involves CUI. Code and Trust is based in Mt Pleasant, SC, near NIWC Atlantic.
Code and Trust: a software development company since 2018
Code and Trust is a custom software development company founded in 2018, with an office in Mt Pleasant, SC. We deliver custom software, AI implementation, and digital transformation for enterprise operations teams and product founders across the US, with full IP transfer on every engagement. Most large builds are fixed-price, with a monthly retainer after launch.
As a software development company, Code and Trust covers the full delivery lifecycle: discovery and scoping, architecture design, engineering, QA, deployment, and post-launch support scoped per engagement. Every project begins with a written scope document, and the price is agreed before any work begins.
For buyers comparing software development companies by engagement model, see our software development agency page, which covers project-based, staff augmentation, and project takeover structures. For buyers in the Charleston, SC market, see software development in Charleston.
For LLM pipelines, RAG systems, and AI-native product builds, see our AI software development service, which runs on the same written-scope, full-IP-transfer engagement model.
Ready to scope your project?
We'll review your requirements and return a written scope and a price.