Custom systems, any shape or size, built end-to-end.

When the productised packages don't fit. Bespoke platforms, AI integrations, internal tooling, custom dashboards — built on AWS-native cloud infrastructure by the team behind TradeTrackHQ. We've shipped what you're asking for.

Engagement size
£15k - £100k+
Typical timeline
4-16 weeks
Pricing model
Scoped fixed-price
Aftercare
Optional retainer
What we build

From a focused AI feature to a complete platform.

Most engagements fall into one of these shapes. If your idea is something else entirely, that's fine — drop us a line and we'll tell you whether it's something we should take on or pass.

SaaS platform

Multi-tenant SaaS for your industry

End-to-end build of a multi-tenant product: auth, billing, admin, customer dashboards, mobile app if needed. Reference: we built and run TradeTrackHQ ourselves.

AI feature

AI integrated into an existing product

Add an AI feature to a product you already run — voice-to-text quoting, document parsing, customer chatbot, recommendation engine, custom RAG. We handle the model selection, prompt engineering, and production infrastructure.

Internal tooling

Internal tools that finally pay for themselves

Admin dashboards, ops consoles, automated workflows, internal AI assistants for your team. Built fast using AI tooling so what would have cost £80k from an agency costs £15-25k from us.

Data + dashboards

Custom dashboards on your data

Pull your data from wherever it lives (Stripe, your CRM, your warehouse), transform it, and surface it in a dashboard your team will actually use. AWS-native or whatever cloud you already pay for.

Migration

Lift legacy systems into the cloud

If you've been told "we can't change that, it's how it's always been" once too often — we'll migrate the legacy thing to something modern, with the data intact and the rough edges smoothed.

R&D

"Is this even possible?" R&D sprints

2-4 week proof-of-concept builds to test whether a vague idea can actually work. Cheaper than hiring; you get a real working prototype rather than a Powerpoint.

The stack we reach for

AWS-native, AI-fluent, fast to ship.

Not a one-size-fits-all toolkit — we pick the boring well-understood thing where it works and the newer thing where it earns its keep. Everything here is from systems we've shipped, not a stack we read about in a blog post.

Compute
AWS Lambda
API Gateway
EventBridge
Storage
DynamoDB
S3
Aurora (where SQL fits)
Auth + billing
Cognito
Stripe
OIDC federation
AI
AWS Bedrock · Claude
GPT · Whisper · Vision
Custom RAG
Frontend
React · Astro
iOS Swift
Tailwind / custom CSS
Ops
Terraform IaC
GitHub Actions + OIDC
CloudWatch

Proof of work: TradeTrackHQ

A multi-tenant SaaS for UK trade businesses — Lambda backend, DynamoDB, Cognito auth, Stripe subscription billing, React web app, native iOS app with SwiftData, SES for transactional email, full CI/CD via GitHub Actions with OIDC. Built and operated by the same hands that would be on your build.

Multi-tenant Stripe billing iOS native AWS Lambda Terraform IaC 2,100+ tests
How an engagement runs

Four phases. Fixed price after phase 1.

No 8-week "discovery phases". Phase 1 is short and either ends with a written quote or with us telling you we're not the right fit.

01

Discovery call + written brief

30-60 min call. We come back with a written 1-page brief: what we'd build, how we'd build it, what could go wrong, and a fixed-price quote.

Week 0 · free
02

Design + spike

1-2 week design phase: architecture diagrams, key technical decisions documented, a small spike of the riskiest part (auth, AI prompt accuracy, third-party integration).

Week 1-2
03

Build to demo-able milestones

Weekly demo of working software, not slide decks. You see real progress every week. Fixed scope means we say no to scope creep — but we'll always tell you what we'd add if there was more budget.

Week 3-N
04

Ship + handover

Production deploy, monitoring set up, runbook written, code in your GitHub. Optional retainer for ongoing tweaks and bug fixes after launch.

Final week
Before you spend £15k

A custom build suits some teams. Not others.

A scoped build is a serious line item. Here's where it pays off, and where you'd be better served by something smaller.

This is for you if

  • You have a clear problem but the off-the-shelf SaaS doesn't quite fit
  • You want one team to handle design, build, and production deploy
  • You value working software in week 3 over a perfect 60-page spec in month 2
  • You can absorb a £15k+ engagement in a single payment or split over the project
  • You'd rather have one engineer who's seen the whole stack than a 5-person agency team

This isn't for you if

  • You need 24/7 enterprise SLAs from day one — we're not a managed service
  • You want to micro-manage every commit and code review yourself
  • You need a 30-person team to make a procurement department happy
  • Your budget is under £10k — start with one of our productised packages instead
  • You want us to rewrite a working system "because the old one feels old"

Let's talk about what you're trying to build.

Send a paragraph (or three) about the problem. We'll come back within one working day with honest thoughts and, if it makes sense, a discovery call slot. No bloated proposals, no awkward sales motion.

Email northpath@tradetrackhq.com → Back to all services