Your systems are only as good as how well they talk to each other. We design and build secure, well-documented APIs that turn isolated tools into one connected, automated ecosystem.
$ npm run build
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Trusted by startups and enterprises shipping real products.
Overview
Whether you're exposing data to partners, powering a mobile app, or stitching internal tools together, we build APIs that are fast, secure, and a pleasure to integrate with.
Well-versioned, well-documented, and built to last.
What that means for you
REST and GraphQL, chosen per use case
Authentication, authorization & rate limiting
Versioning that won't break your clients
Documentation developers actually enjoy
API Development
Software Development
99.9%
uptime target
<100ms
typical response
100%
documented endpoints
Built with
What we build
A complete, production-ready capability set — not a checklist of buzzwords. Every item ships as standard with your build.
Included with every build
Clean, predictable endpoints that follow proven conventions.
Flexible queries that give clients exactly the data they need.
OAuth, JWT, API keys, and rate limiting baked in from day one.
Connect Stripe, Twilio, ERPs, and any external service reliably.
Interactive, always-current docs via OpenAPI / Swagger.
Optimised responses, pagination, and caching that scale.
Why this approach
The same job, two very different outcomes. Here's an honest, side-by-side look.
Custom-built with Exarth
A versioned, documented API platform built to last.
Best long-term value
DIY / one-off point integrations
Brittle scripts that break every time something changes.
Hidden long-term cost
A proper API platform is the difference between integrations that just work and a permanent, costly maintenance headache.
Build it the right wayHow we work
A clear, four-phase path with real demos and deliverables at every step — you always know what we're doing and what you'll get.
We define endpoints, schemas, and contracts before building.
What we do
What you get
We implement, then add auth, validation, and rate limiting.
What we do
What you get
Automated tests plus interactive, versioned documentation.
What we do
What you get
We ship with monitoring, logging, and alerting in place.
What we do
What you get
Technology
Battle-tested tools chosen to fit the problem, not the hype cycle — fast, secure, and a pleasure to maintain.
Chosen for
Speed
Optimised for fast, responsive software.
Security
Hardened with best-practice defaults.
Scalability
Grows with your users and team.
Maintainability
Clean, documented, easy to extend.
The engine that powers your API.
Fast, dependable responses.
Contracts and query layer.
Clean, documented endpoints.
Storage and caching.
Fast, consistent data.
Auth and protection.
Every endpoint protected.
Sectors we engineer for
Each vertical has different compliance, UX, and scale demands — pick a sector to preview exactly what we build for it.
HIPAA-aware platforms that put clinicians and patients first.
What we build
Tech & focus
Featured work
An operations team was juggling spreadsheets and disconnected tools. We unified everything into one custom platform — and gave them hours back every week.
Replacing four disconnected tools with one custom platform
Operations / Logistics
The challenge
Critical work lived across spreadsheets, email, and three separate tools that never talked to each other, creating constant manual re-entry and costly errors.
What we built
Built with
The results
We finally have one source of truth — it changed how the whole team operates.
What you get
We don't measure success in features shipped — we measure it in the results your business feels. Here's what changes once it's live.
Tools and partners exchange data automatically — no manual exports.
Auth, rate limiting, and validation protect every endpoint.
Clear docs and contracts let any team integrate in days, not weeks.
Client voices
The teams who shipped with us, in their own words.
Exarth shipped our MVP in six weeks and it just worked. The transparency through every sprint was unlike any agency we'd worked with.
They didn't just build what we asked — they pushed back where it mattered and delivered something better. Our load times dropped 40%.
From discovery to launch we always knew exactly where things stood. A genuine engineering partner, not a vendor you chase for updates.
Explore more
Most projects touch more than one of these — swipe through the rest of what our software team builds.
Software Development
Off-the-shelf tools force you to bend your process to their limits.
Software Development
When sales, operations, and customer data live in separate tools, things slip through the cracks.
Software Development
Building a SaaS is more than an app — it's multi-tenancy, billing, onboarding, and scale.
Software Development
Aging software slows you down, but a risky big-bang rewrite can be worse.
Software Development
From architecture to deployment to cost control, we design cloud-native systems that scale automatically, stay reliable under load, and don't surprise you on the monthly bill.
Software Development
Off-the-shelf tools force you to bend your process to their limits.
Software Development
When sales, operations, and customer data live in separate tools, things slip through the cracks.
Software Development
Building a SaaS is more than an app — it's multi-tenancy, billing, onboarding, and scale.
Software Development
Aging software slows you down, but a risky big-bang rewrite can be worse.
Software Development
From architecture to deployment to cost control, we design cloud-native systems that scale automatically, stay reliable under load, and don't surprise you on the monthly bill.
