Custom & AI-Powered Solutions
Custom API and Integration Platform
A custom integration layer that connects your systems, partners and payment or messaging providers through secure APIs, with logging, retries and monitoring of every exchange.
- Server-based
- Web-based
Overview
Custom API and Integration Platform
Most organisations run several systems that do not talk to each other: an accounting package, a sales or booking system, a website, a mobile app and partner platforms. Data is exported, re-typed and reconciled by hand, and when something goes wrong between two systems nobody can see where the message was lost.
Extrion Tech designs and develops custom APIs and integration platforms in-house for businesses and institutions in Zanzibar, Tanzania and the wider region. We build documented REST APIs that expose your data and services safely to your own apps and approved partners, and integration services that move data between systems on a schedule or in real time. Connections to payment, messaging or government platforms are optional, subject to project scope and to each provider offering an API and granting access. Every request and exchange is logged, failures are retried and alerts are raised before problems reach customers.
Each integration is designed around the systems involved, the data that must move, and who owns it. Data mappings, validation rules, authentication methods and usage limits are agreed with the client, and any regulatory requirements for the data exchanged are established for the relevant jurisdiction. The result is a maintainable connection layer rather than a collection of one-off scripts.
Business problems it addresses
- Staff export and re-type data between systems, introducing delays and errors.
- Partners and mobile apps need access to data, but there is no secure, documented way to provide it.
- Failed transfers between systems go unnoticed until a customer or auditor finds a mismatch.
- One-off integration scripts are undocumented and break whenever a system is updated.
- Payment confirmations and system records do not reconcile automatically.
Interface
Five screens of the system
Illustrative mockups with sample data — not screenshots of a client’s system.
Workflow
From system audit to monitored integration
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1
System inventory
Existing systems, data owners and available APIs or export options are documented.
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2
Data mapping
Fields, formats and rules for each exchange are mapped and agreed with the client.
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3
API design
Endpoints, authentication, error responses and usage limits are specified and documented.
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4
Build and sandbox testing
Integrations are built and tested against test environments or sample data.
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5
Partner onboarding
Approved consumers receive credentials, documentation and test access.
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6
Go-live
Integrations are switched on in stages, with old manual steps kept until results match.
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7
Monitoring and reconciliation
Exchanges are logged and monitored, and mismatches are flagged for follow-up.
Functions covered
Modules and what they do
01 API layer
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REST API endpoints
Exposes selected data and services through versioned, documented endpoints.
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Authentication and keys
Issues API keys or tokens per consumer with scopes and expiry.
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Rate limiting
Applies usage limits per consumer to protect systems from overload.
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Developer documentation
Publishes endpoint references and examples for internal and partner developers.
02 Integration services
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Data synchronisation jobs
Moves records between systems on schedules or triggered by events.
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Webhooks
Sends and receives event notifications such as payment confirmations.
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Data mapping and transformation
Converts formats and codes between systems according to agreed mappings.
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Payment and messaging connectors
Optional / subject to scope
Connects to mobile money, bank or SMS providers where they offer an API and grant access.
03 Operations
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Request and exchange logs
Records every call and transfer with status, timing and error details.
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Retries and dead-letter queue
Retries failed exchanges and parks persistent failures for review.
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Reconciliation reports
Optional / subject to scope
Compares records between systems and lists mismatches to resolve.
Technology stack
Technology selected for this solution
These are the technologies planned for this type of system. The final stack depends on scale, performance, licensing, infrastructure, integrations and your requirements.
Frontend
Backend
Database
Infrastructure
Integrations
Security & data integrity
Protecting your data and its accuracy
Each consumer receives only the scopes it needs, credentials can be rotated or revoked, and all traffic is encrypted in transit. Where integrations carry payment or personal data, logging, masking and retention requirements are agreed with the client for the relevant jurisdiction.
Standard protections
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Authentication and authorisation
Every request is checked for a signed-in, permitted user.
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Secure API access
Authenticated, rate-limited access for integrations.
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Fine-grained permissions
Permissions per module and action, such as view, edit or approve.
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Encryption in transit
HTTPS/TLS protects data between users and the server.
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Server-side input validation
All input is validated on the server before it is saved.
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Protection against common web vulnerabilities
Defences against injection, cross-site scripting and request forgery.
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Database constraints and transactions
Constraints and transactions keep related records consistent.
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Audit logs
Important actions are recorded with who, what and when.
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User activity history
A history of each user’s activity for supervisors and administrators.
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Backup and restoration
Scheduled backups with tested restoration procedures.
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Monitoring and error logging
Errors and unusual activity are logged and monitored.
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Role-based access control
Each user sees only what their role allows.
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Secure password storage
Passwords are stored using strong one-way hashing, never in plain text.
Optional advanced protections
- Encryption at rest Sensitive data encrypted on disk where the infrastructure supports and is configured for it.
- Multi-factor authentication A second sign-in step for selected or all users.
- Disaster recovery planning A documented plan to restore service after a major failure.
- Data retention and deletion policies Retention periods and deletion rules agreed with you.
Data integrity
Incoming payloads are validated against agreed schemas before they touch any system, and idempotency keys prevent the same payment or record from being processed twice. Every exchange is logged with its outcome, failed transfers are retried or queued rather than lost, and reconciliation reports confirm that both sides agree.
Security controls are configured for each project. We do not claim certification, compliance or immunity from attack unless independently verified for your deployment.
Customisation & integration
Tailored to how you work
We tailor modules, reports, permissions, workflows, branding and integrations to your organisation. Tell us which features you need when you request a quote.
- Systems, partners and providers to connect
- Endpoints, scopes and usage limits per consumer
- Data mappings and validation rules
- Sync schedules, retry policies and alert recipients
- Reconciliation reports and dashboards
Deployment & support
From go-live to continuous improvement
Onboarding, data migration, training, maintenance, technical support and future enhancements are services we scope into your project.
Bringing records from spreadsheets or older systems, checked and reconciled.
Role-based training for users, supervisors and administrators.
Technical support and maintenance under an agreed support plan.
New modules, reports and integrations as your organisation grows.
Pricing
Pricing tailored to your requirements
Every organisation has different workflows, users, infrastructure, and integration needs. Request a quotation for a solution designed around your requirements.
- Number of users, branches and modules
- Customisation and integrations
- Hosting: cloud, your server or hybrid
- Data migration and training
- Support and maintenance plan
Custom & AI-Powered Solutions
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