1DAYMVP · CUSTOM SOFTWARE
Custom software. Designed for the way you work.
When existing tools struggle to support your business processes, a custom solution may be worth exploring. As a full-stack developer, I plan the interface, data and business rules as parts of one system.
01 / Custom software
When is custom software justified?
A good system does not require rebuilding everything from scratch. We first identify where work breaks down: copying data by hand, unclear approvals or disconnected tools. An existing product or a few well-chosen integrations may be enough. Custom development is justified when the necessary business logic or user experience cannot reasonably be delivered with existing tools.
02 / Custom software
From interface to data integration
A portal, marketplace or SaaS product involves more than screens. We need to define who can view and change data, how errors are handled and what happens when an external service is unavailable. The system design follows the real workflows it must support.
- Frontend and administration for the different user roles.
- Backend, data model and appropriate permissions.
- APIs and connections to existing business systems.
- Testing critical journeys, error handling and launch planning.
03 / Custom software
Turning requirements into a usable system
Discovery captures both the current process and the intended way of working. Features get checkable acceptance criteria: who starts a task, what counts as success and which failures must be handled. We begin with a complete, testable journey from the interface to persisted data. Further features build on that foundation, so feedback can shape the product during development.
04 / Custom software
Build cost, operations and future development
Business rules, integrations, migration work and test cases drive the effort. Replacing an existing system also requires a data migration and transition plan. A useful proposal clarifies operational work and external service costs alongside development. Source-code access, handover materials and maintenance responsibilities are agreed before work begins, at a level appropriate to the system.
A CHECKABLE OUTCOME
Testable handover for custom software
Custom software supports your operation when data and business rules work together in real tasks. Plan acceptance with the people using the system and a concrete sample workflow.
- Business rules
- An agreed sample task should verify the main workflow and permission differences. Try the prohibited action as well.
- Integrations
- Follow a test record from its source to its destination. Repeats, duplicates, updates and external failures need separate checks.
- Migration
- When moving existing data, agree on a sample run, reconciliation and a rollback plan. Mapping fields and identifiers is part of the work.
- Operations
- Document responsibility for access, backups, failure alerts and support, together with source-code and documentation handover.
A pilot provides evidence for a wider rollout. Moving an entire operation requires more than pressing a deployment button.
START WITH WHAT MATTERS
What to include in your brief
You do not need a finished specification. These answers help define a useful first step.
- Which workflow currently causes the most manual effort or errors?
- Who will use the system, and which permissions do they need?
- Which data and existing services must be connected or migrated?
- What would make the first release useful, and what is the available budget?
SEE THE WORK
MyDreamHome
The property platform in the portfolio is an example of a more complex web product. You can find it alongside the BLAZIN and Swappie work on the homepage.
Explore MyDreamHomeGOOD TO KNOW
Common questions
How does custom software differ from a website?
They can overlap: business software may run in a browser. The difference is its main job. A company website primarily explains an offer and generates enquiries; a custom system manages data, permissions and business workflows.
Can you connect to an existing system?
Yes, when it provides an appropriate API or other data interface. A review covers access, data quality, request limits and failure handling. Different legacy systems may require different integration approaches.
Can we start with a smaller release?
Yes. We can select a complete workflow that is useful by itself and move less important features to later releases. Real users can then give feedback on working software. The MVP development page explains this approach in more detail.
How can another developer take over later?
Organised access, source code, database information and deployment instructions help another developer continue the work. Documentation depth and handover tasks should be agreed at the start, based on the system’s complexity.
Custom software
Let’s talk about what you want to build.
Tell me what you want to bring to life in a few sentences. I’ll review your idea and we’ll take it from there.