Custom CRM, or configure what you already pay for?
This is the first question worth answering honestly, and the answer is often no. If Salesforce, HubSpot or Zoho covers 80% of what you need, configuration plus a handful of integrations is cheaper to build and far cheaper to maintain than a custom system.
Custom becomes the right call when your process is genuinely unusual — regulated workflows, pricing logic no off-the-shelf pipeline models, hardware or field operations feeding the same records — or when per-seat licensing across a large team costs more each year than the build would. We will tell you which case you are in before you commit budget.
The integration layer is the real project
A CRM in isolation is an address book. Its value comes from being the place where your other systems meet: billing, support tickets, the mobile app, the website's enquiry forms, the accounting package, whatever hardware sits in your locations.
For a multi-location gym chain we connected exactly that set — the CRM, a React Native member app, QR-code entry gates and kiosk payments — into one system on AWS. Member records, access rights and payments stayed in agreement across all four, which is the hard part and the part that decides whether staff trust the system.
Data migration is where CRM projects quietly go wrong
Every CRM migration meets the same three problems: duplicate contacts that are not exact duplicates, historical records with fields that no longer exist, and a cutover window where both systems are live and drifting apart.
We handle these as explicit stages rather than a final-week scramble — deduplication rules agreed with your team, a mapped field-by-field migration, a dry run against real data, and a cutover plan that says exactly what happens to records created during the switch.
What we build it with
React, Next.js, Angular or Vue for the interface; Node.js, Django or .NET behind it; PostgreSQL, MySQL or MongoDB for the data, chosen on how relational your records genuinely are. Deployment on AWS, Azure or Google Cloud with CI/CD pipelines, so releasing a change does not mean an evening of downtime.
Where a CRM has to talk to systems you do not control, that goes through a documented API layer rather than direct database access — the difference between an integration that survives the other vendor's next release and one that does not.
