Banking & FinTech
Financial software engineered for correctness first, and for customers who expect it to feel effortless
We build software for banks, microfinance institutions, payment providers and fintech teams: customer-facing channels, the APIs behind them and the back-office processes that keep every balance right. Our work sits alongside your licensed core systems, extending them with modern digital experiences without compromising control.
Banking & FinTech
The challenge
Customers moved to mobile; many core processes did not
Customers now expect to open an account, move money and resolve a problem from their phone in minutes. Behind the screen, many institutions still rely on core systems designed for branch operations, batch processing overnight and manual reconciliation the following morning. Every new channel added on top increases the integration burden and the risk of inconsistency.
In the DRC and much of Africa, the landscape adds its own complexity. Mobile money is often the primary way people pay, accounts are held in both US dollars and Congolese francs, agent networks extend reach beyond the branch, and regulatory reporting requirements continue to evolve. Financial software here must handle multiple currencies, rails and partners as a matter of course.
- Mobile and web channels that show balances inconsistent with the core banking system
- Mobile money, card and bank transfer flows reconciled by hand in spreadsheets
- Account opening that still requires a branch visit and paper forms
- Each new partner integration built as a one-off, without a reusable API layer
- Limited visibility into failed, pending or duplicated transactions until customers complain
Capabilities
What we design and build in this domain.
Mobile and digital banking
Native and web banking applications for retail and business customers: balances, transfers, bill payments, statements and secure messaging.
Financial APIs
A documented, versioned API layer that exposes accounts, payments and customer data to your channels and approved partners under strict access policies.
Payment and mobile money integrations
Integration with mobile money operators, card processors, payment gateways and interbank rails, with consistent status handling across providers.
Digital onboarding
Remote account opening with document capture, identity verification integrations, risk-based checks and a clear path to manual review.
Transaction processing
Idempotent payment orchestration, double-entry ledgers and state machines that keep every transaction traceable from initiation to settlement.
Reconciliation workflows
Automated matching of internal records against provider and bank statements, with exception queues and multi-currency support for USD and CDF.
Core banking integration
Adapters and middleware that connect modern channels to existing core banking platforms without destabilising the system of record.
Monitoring and fraud signals
Real-time transaction monitoring, configurable rules and alerting that help risk teams spot anomalies and act quickly.
Example use cases
Illustrative examples of how these capabilities can be applied.
- 01 · Microfinance institutions
Mobile banking for a microfinance institution
A microfinance institution could give members a mobile app to check savings, repay loans through mobile money and receive reminders, connected to its existing loan management system.
- 02 · Banks and payment aggregators
Multi-provider payment hub
A bank could expose a single payment API to merchants while routing requests to several mobile money operators and card networks, normalising statuses and fees behind one interface.
- 03 · Finance and operations teams
Automated daily reconciliation
An operations team could replace morning spreadsheet work with automated matching of ledger entries against provider statements, reviewing only the exceptions the system flags.
- 04 · Fintech startups and digital platforms
Embedded finance for a platform
A marketplace could offer wallet balances, payouts or instalment payments to its users by integrating with a licensed financial partner through a well-designed API layer.
Technical approach
How we engineer financial systems
In finance, a fast feature that produces one wrong balance is a failure. Our process puts correctness, auditability and controlled change ahead of speed, then removes friction for the customer.
- 01
Model money explicitly
We define accounts, ledgers, transaction states and currency rules up front, so every movement of funds has a clear representation and an audit trail.
- 02
Isolate the system of record
New channels connect to your core through an integration layer with contracts, retries and idempotency, protecting the core from load and inconsistent requests.
- 03
Threat-model every flow
Onboarding, login, transfers and partner APIs are reviewed for abuse cases before development, and security tests run in the delivery pipeline.
- 04
Release with control
Feature flags, staged rollouts, segregated environments and approval workflows let your risk and compliance teams stay in step with each release.
Technologies & practices
- Double-entry ledgers
- PostgreSQL
- Event sourcing
- OAuth 2.0 / OpenID Connect
- OpenAPI
- Message queues
- Hardware-backed key management
- Native iOS and Android
- Infrastructure as code
Security & scalability
Security and resilience for financial applications
Financial application security is not a layer added at the end. It shapes architecture, code and operations, and it is designed to support the controls your institution and regulators require.
Strong customer authentication
Multi-factor login, device binding, step-up verification for sensitive actions and secure session management on mobile and web.
Encryption and key management
Data encrypted in transit and at rest, with keys held in managed key stores or hardware security modules and rotated under policy.
Idempotency and exactly-once effects
Payment requests carry idempotency keys and are processed through state machines, so network retries never create duplicate debits.
Complete audit trails
Every transaction, configuration change and administrative action is logged with actor, time and context, ready for internal audit.
Secure development lifecycle
Code review, dependency scanning, static analysis and penetration testing are built into delivery rather than scheduled once a year.
Designed for high availability
Redundant services, graceful degradation and tested recovery procedures keep channels available when a provider or component fails.
Frequently asked questions
Is Gwavo Technologies a bank or a licensed payment institution?
No. We are a software engineering company. We design and build software and integrations for banks, financial institutions and fintech companies, which remain responsible for their licences and regulated activities.
Can you integrate mobile money into our banking or fintech application?
Yes. We integrate with mobile money operators and payment gateways through their official APIs, handling callbacks, status reconciliation and multi-currency flows. Access to those APIs is granted by each provider under its own commercial and regulatory terms.
Do you replace core banking systems?
Usually we do not. Most institutions benefit more from modernising the layers around a stable core: channels, APIs, onboarding and reconciliation. Where a migration is needed, we plan it in stages with parallel running and verification.
How do you support compliance requirements?
We build the technical controls compliance relies on, such as audit logs, access controls, data retention rules and reporting extracts, and work with your compliance team to map them to the regulations that apply to you.
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Gombe, Kinshasa, DR CongoPhoto: MONUSCO/Abel Kavanagh — CC BY-SA 2.0
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