Engineering for your business
API and system integrations
Connect tools that need to share information consistently. Integrations organise data flows between ERP, CRM, platforms and external services, with authentication and failure handling.
Problems I can address
- Duplicate records and conflicting numbers across systems.
- An external failure stopping the entire workflow.
What the scope can include
- Field mapping and system ownership definitions.
- Connectors, APIs or webhooks based on vendor capabilities.
- Idempotency, controlled retries and traceability.
- Contract tests and documentation of credentials and limits.
When to consider it
For companies synchronising existing tools without replacing their whole infrastructure.
Possible applications
Potential scope, not completed-project claims:
- Synchronise contacts between a CRM and an authorised platform.
- Receive order events through a webhook and update their state.
- Reconcile ERP records with an internal portal.
What affects the estimate
Documentation, test environments, request limits, authentication, available fields and failure behaviour need inspection. Each vendor may impose restrictions. Two-way integration requires a source of truth and a conflict-resolution policy.
Limits and decisions
Feasibility depends on vendor APIs, permissions and limits. External contract changes require monitoring and maintenance.
The deliverables on this page guide the proposal. Integrations, migration, support, infrastructure and responsibilities are confirmed in the agreed scope.
Synchronisation is a contract between systems
Choose a record and define its authoritative source, identity, updates and conflict handling. I can inspect authorised documentation and environments, implement validation, idempotency and reconciliation. Unavailable or restricted APIs can prevent the desired scope. Logs, alerts and retries need purpose and ownership. Integration should not duplicate entire systems or transfer personal data unnecessarily.
How the work progresses
- Inspect vendor contracts, permissions and test environments.
- Map fields, identifiers and ownership of each data item.
- Build connectors with idempotency and bounded retries.
- Test failures, repeated events and documented recovery.
FAQ
Before we begin.
Does a webhook replace an API?
No. Webhooks notify events; APIs support queries or actions. They can work together. The vendor contract defines signatures, authentication and retries.
How are duplicate records avoided?
Stable identifiers and idempotency rules recognise repeated operations. Tests should simulate retries and concurrent processing.
What if a vendor offers no API?
Feasibility changes. We can assess authorised exports or connectors without promising access or automation the vendor does not allow.