REST API Development
Make your systems talk to each other — cleanly.
Weeks
to launch, not quarters
100%
code & IP ownership
Fixed
pricing, agreed up front
Senior
engineers on every build
In short
REST API Development without the mess
REST API Development is what keeps your tools in sync — done well it's invisible, done badly it's a constant source of bugs. We build and integrate APIs that are documented, versioned and reliable.
REST or GraphQL, third-party integrations, and connections to CRMs and ERPs, built to stay stable as both sides change.
| What is it? | Custom-built rest api development delivered with AI-assisted development. |
| Typical timeline | Weeks, not quarters — first working software in about 1–2 weeks |
| Tech stack | Next.js, React, TypeScript, PostgreSQL, Vercel |
| Pricing | Fixed, quoted after a free scoping call |
| Ownership | You own 100% of the code and infrastructure |
| Best for | Startups, SMBs and enterprises replacing manual work or off-the-shelf tools |
The problem
Manual work and misfit tools are quietly costing you
You need results, not another six-month project that runs over budget and ships something nobody uses.
What's broken
How it feels
"You shouldn't need a giant budget or a year of runway to get software that fits your business and actually gets used."
Why IMS
A software partner built for speed and trust
We get it — you've seen projects run long, blow the budget, or deliver something the team quietly abandons. That's exactly why we approach rest api development differently: a small senior team, working software every week, and a fixed price you agree before we start.
AI-native team shipping production software in weeks, not quarters
Senior engineers on every build — no junior churn or offshore hand-offs
Fixed scope and pricing agreed before we write a line of code
You own 100% of the code and infrastructure — zero lock-in
Modern, proven stack: Next.js, TypeScript, PostgreSQL and Vercel
What you get
What you get
Clean, documented APIs
Versioned, typed and documented so your team and partners can build against them with confidence.
Integrations that hold
Third-party connections with proper auth, retries and error handling — not a script that breaks on the first edge case.
CRM & ERP connectors
Sync data between Salesforce, HubSpot, NetSuite and the rest so nothing gets re-keyed by hand.
AI-accelerated delivery
We build with Claude Code, Cursor and modern AI tooling, so you ship in weeks what agencies quote in quarters — without cutting corners on quality.
Built to change
Versioning and abstraction so a vendor's update doesn't take down your integration.
You own everything
Source code, infrastructure and accounts are yours from day one. No proprietary platform, no lock-in, no hostage situation.
Use cases
Common use cases
Build a public API
A documented, versioned REST or GraphQL API partners and clients can build against confidently.
Third-party integrations
Reliable connectors to the services your product depends on, with proper auth and retries.
CRM & ERP sync
Two-way sync between Salesforce, HubSpot, NetSuite and your systems so nothing is re-keyed.
Legacy system bridges
Expose an older system through a modern API or middleware layer so new apps can use it.
How it works
How we work
Discovery & scoping
We map your workflows, data and goals on a focused strategy call, then scope a build with clear milestones, timeline and fixed pricing — no open-ended retainers.
AI-accelerated build
Our senior engineers pair with AI coding tools to ship production software in a fraction of the usual time. You see working software every week, not a status deck.
Launch, measure & iterate
We deploy, train your team and keep improving from real usage. The code is yours — clean, documented and handed over with no lock-in.
Deep dive
REST API Development, done properly
What REST API Development really means
The hard part of rest api development isn't writing code — it's building the right thing, making it reliable, and shipping it before the opportunity passes. That's exactly where we focus. That's the whole idea behind how IMS approaches rest api development: senior engineering, AI-accelerated delivery, and working software you can see every single week.
What's included
Every rest api development engagement with IMS is built on the same foundation:
- Clean, documented APIs. Versioned, typed and documented so your team and partners can build against them with confidence.
- Integrations that hold. Third-party connections with proper auth, retries and error handling — not a script that breaks on the first edge case.
- CRM & ERP connectors. Sync data between Salesforce, HubSpot, NetSuite and the rest so nothing gets re-keyed by hand.
- AI-accelerated delivery. We build with Claude Code, Cursor and modern AI tooling, so you ship in weeks what agencies quote in quarters — without cutting corners on quality.
- Built to change. Versioning and abstraction so a vendor's update doesn't take down your integration.
- You own everything. Source code, infrastructure and accounts are yours from day one. No proprietary platform, no lock-in, no hostage situation.
Our process
We keep it simple and transparent — three clear stages, with working software in your hands throughout:
1. Discovery & scoping
We map your workflows, data and goals on a focused strategy call, then scope a build with clear milestones, timeline and fixed pricing — no open-ended retainers.
2. AI-accelerated build
Our senior engineers pair with AI coding tools to ship production software in a fraction of the usual time. You see working software every week, not a status deck.
3. Launch, measure & iterate
We deploy, train your team and keep improving from real usage. The code is yours — clean, documented and handed over with no lock-in.
The stack we build on
We build rest api development on a modern, proven stack — Next.js, React, TypeScript and Tailwind CSS on the front end, PostgreSQL (often via Supabase or Neon) for data, and Vercel for fast, global hosting. It's a deliberately boring-on-purpose toolchain: fast for your users, cheap to run, and familiar to whichever engineer you hire next.
Production-grade from day one
Secure authentication, real databases, automated tests, error handling and monitoring are part of the build, not an afterthought. The difference between a demo and rest api development that survives real users is exactly this plumbing — and it's where we spend our care.
Built with AI, reviewed by engineers
AI coding tools like Claude Code and Cursor let a senior engineer produce far more, far faster. We use them every day, then review, architect and harden the output so you get the speed of AI-assisted development without the tech debt that comes from letting a tool run unsupervised.
Why AI-assisted development changes the math
The old economics of custom software — big teams, long timelines, huge budgets — pushed businesses toward generic tools in the first place. AI-accelerated delivery collapses that. REST API Development that once cost a fortune and took two quarters can now ship in weeks at a fraction of the price, so custom-fit software finally beats compromise software on cost as well as fit.
Related
Related capabilities
Explore related capabilities, or see the full picture on our AI & software development hub:
FAQ
REST API Development — frequently asked questions
Can you integrate our systems that weren't built to talk to each other?
Usually, yes. Even without a modern API we can often connect systems through their available interfaces, webhooks or a middleware layer we build. We'll assess what's possible on a discovery call and give you a straight answer.
REST or GraphQL — which should we use?
REST is simpler and widely understood; GraphQL shines when clients need flexible, precise queries over lots of related data. We'll recommend based on who's consuming the API and how, rather than defaulting to a trend.
Why choose IMS for rest api development?
You get a senior team that ships production software in weeks using AI-assisted development, fixed pricing agreed up front, and full ownership of the code and infrastructure. No junior churn, no lock-in, and working software you can see every week.
How fast can you deliver?
Because we build with AI-assisted tooling, a working first version usually ships in weeks rather than months, with larger platforms rolled out in phases. You see working software every week instead of waiting for a big reveal.
Do we own the code and intellectual property?
Yes — completely. The source code, infrastructure and accounts are yours from day one, built on open, standard tools with no proprietary platform or lock-in.
How do we get started?
Book a free strategy call. We'll learn about your business and goals, then scope the work into clear milestones with fixed pricing and a timeline — so you know exactly what you're getting before any build begins.
Let's scope your build
Book a free strategy call. We'll tell you what we'd build, how long it takes and what it costs — no obligation.