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Custom software development

Somewhere in your business there is a spreadsheet that runs a process everyone depends on, emailed between people and edited by one person at a time. Or an off-the-shelf tool you have bent so far that half the work now happens outside it. We build the software that should be there instead: shaped around how your team actually works, connected to the systems you already pay for, and simple enough that people stop keeping their own copy.

WHAT THIS LOOKS LIKE IN PRACTICE

Four ways this arrives.

The process lives in a spreadsheet

Approvals, schedules or stock, tracked in a shared file with colour codes only one person understands. We turn it into an application with proper records, permissions and history, so you can see who changed what and when, and nobody works from an old copy.

Your tools do not talk to each other

Staff copy data from one system into another by hand, and the two slowly drift apart. We connect them through their APIs, clean up the data where it crosses over, and alert someone when a sync fails instead of letting it fail quietly.

Nobody can see what is happening

The numbers exist, spread across exports and inboxes, and someone assembles a report by hand every Monday. We pull them into one place, build the dashboard the people making decisions will actually open, and check it is current rather than trusting the job that feeds it.

The old system cannot be touched

A legacy application still runs the business and every change to it is a risk. We map what it really does, move it piece by piece onto something maintainable, and keep both running until the last piece has landed. No weekend cut-over.

STACK
WEB
Next.jsReactTypeScript
BACKEND
PythonFastAPINode.jsSQLAlchemy
DATA
PostgreSQLClickHouseDragonflyDB
INTEGRATION
TableauMicrosoft TeamsTwilioBox
RELATED CASE STUDY
FM360

A facilities operations platform for a healthcare estate, built so supervisors can see what is overdue and what keeps coming back without exporting spreadsheets by hand.

Read the write-up →
You talk to the engineer writing the code
Four hours of daily overlap with your working day
We sign an NDA before any specifics
Most engagements start with a fixed-price two-week piece of work
FAQ

Asked on nearly every call.

Why not buy an off-the-shelf tool?+

Often you should, and we will tell you when. If a product already does most of what you need, configuring it is cheaper than building. Custom software earns its cost when the process is how you compete, when you pay for several tools to do one job badly, or when the workarounds cost more staff time than the software would.

Can you work with the systems we already have?+

That is usually the job. Most internal tools are valuable because of what they connect to: an ERP, a work-order system, a CRM, a finance package. If it has an API, we integrate with it. If all it offers is a nightly export, we can work with that too, and we will tell you how fresh the data can honestly be.

How do you find out what we actually need?+

By talking to the people who do the work, not only the people who asked for the tool. We watch the spreadsheet being used, collect the edge cases everyone handles from memory, and write the process down before we build anything. The first release covers the core of it; the exceptions follow once people are using it.

What happens to our old data?+

It comes with you. We migrate it, check the counts and totals against the source, and keep the old system or spreadsheet readable until your team is confident nothing was lost. Where the old data is inconsistent, we show you the records that do not fit rather than quietly guessing what they meant.

Who looks after it once it is live?+

You choose. We can stay on at our hourly rate for changes and fixes, or hand it to your own team with runbooks, architecture notes and a recorded walkthrough. Internal tools change as the business changes, so we build them to be changed by someone other than us.

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Tell us what is breaking.

Send a paragraph about the system and what it needs to do. You will get a real opinion back, not a brochure.

Start a discoverySchedule a call
hello@turtlebyte.inReply within one working day, from the engineer.
You talk to the engineer writing the code
Four hours of daily overlap with your working day
We sign an NDA before any specifics
Most engagements start with a fixed-price two-week piece of work
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