Payment integration
Connect payment providers and internal applications with clear transaction states, retries, and duplicate handling.
BANKING & FINANCIAL SERVICES
Engineering for connected financial operations.
Build and modernize financial platforms with connected payment systems, reliable data flows, and controlled access. Teknalogi translates complex operational requirements into systems that are ready to operate and evolve.
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CONNECTED OPERATIONS
When systems operate separately, complexity grows.
Financial operations become difficult to manage when customer, payment, and internal systems operate independently.
- 01
Disconnected systems
Customer, transaction, and reporting data becomes difficult to keep consistent across platforms.
- 02
Manual reconciliation
Teams spend time matching records and investigating incomplete or inconsistent transactions.
- 03
Limited visibility
Fragmented logs and delayed reporting slow down service issue investigations.
- 04
Changing controls
New products and integrations add requirements for approvals, data access, and audit records.
Financial software shaped around your operations.
Discovery defines the scope so architecture, integrations, and workflows fit the systems already in operation.
Customer and partner portals
Support account services, document submission, application tracking, and partner interactions with controlled access.
Reconciliation and settlement
Bring transaction records, matching rules, exception queues, and settlement reporting into one operational view.
Onboarding and verification
Coordinate forms, documents, verification providers, internal reviews, and approval history.
Internal financial workflows
Build approvals, case management, operational reporting, and back-office administration.
System modernization and APIs
Connect established systems to new applications through documented interfaces and phased releases.
Designed for transaction integrity and operational control.
01 CONTROL
Transaction integrity
Define transaction states, validation, idempotency, and the event records needed for investigation and change review.
02 BOUNDARY
Access and data protection
Align permissions with operational roles, then plan how sensitive data is collected, transmitted, stored, masked, and removed.
03 READINESS
Operational resilience
Test failure handling, backup restoration, monitoring, and deployment procedures against agreed service targets.
Digital Banking Systems Engineering & Security
Table of Contents
Core Banking & Ecosystem Modernization
Modern banking demands rapid feature delivery and flexible integrations without compromising the stability of core ledger systems. Many financial institutions face bottlenecks where legacy monolithic architectures cannot efficiently communicate with modern digital touchpoints.
Teknalogi engineers integration middleware and event-driven microservices orchestration. This pattern isolates heavy read traffic from core transaction databases, keeping customer applications highly responsive during peak hours.
- Transactional Workload Decoupling: Deploying read replicas and distributed caching to serve balance and statement inquiries without burdening the core banking engine.
- Open Banking Standards (SNAP / ISO 20022): Implementing standardized, secure, and documented open banking API interfaces to accelerate fintech partnerships.
- Phased Migration (Strangler Fig): Replacing modules incrementally with controlled traffic routing, mitigating the risk of system-wide downtime.
Through disciplined dependency separation, financial institutions can launch new savings, credit, and partner products with significantly accelerated development cycles.
Payment Gateways & Real-Time Settlement
Interbank fund transfers require deterministic transaction states and resilience against third-party network interruptions.
We build payment processing pipelines featuring strict idempotency, asynchronous message queues with adaptive retry policies, and automated multi-channel reconciliation.
- Idempotency & Duplicate Handling: Guaranteeing each payment instruction is processed exactly once even during network timeouts or repeated callback deliveries.
- Automated Reconciliation Engine: Instantly matching records across internal ledgers, switching gateways, and bank settlement statements to detect anomalies.
- Deterministic State Management: Tracking transactions through in-flight, settled, reversed, and refunded lifecycles with complete operational visibility.
Robust payment processing pipelines safeguard financial balance sheets and eliminate costly manual dispute investigations.
Multi-Layer Security & Fraud Mitigation
Security in banking is the bedrock of public trust and business continuity. Every interaction endpoint requires defense-in-depth protection against sophisticated cyber threats.
Our implementation includes end-to-end data encryption (E2EE), cryptographic payload signing with timestamp verification, and proactive traffic anomaly monitoring.
- Cryptography & Payload Signing: Validating inter-service message authenticity using HMAC / RSA SHA-256 signatures with anti-replay timestamp protection.
- Adaptive Multi-Factor Authentication: Requiring risk-based two-factor verification, biometric authentication, and session binding for high-risk financial actions.
- OWASP Mitigation & API Throttling: Comprehensive defense against injection attacks, credential stuffing, and scraping via adaptive rate limiting at API gateways.
Security controls are engineered to run transparently, preserving a frictionless customer experience during legitimate transactions.
Data Isolation, Masking & Access Governance
Compliance with personal data protection regulations requires strict data segregation and selective access governance over financial records.
We implement isolated data architectures where Personally Identifiable Information (PII) and account credentials are encrypted both in transit and at rest.
- Principle of Least Privilege & RBAC: Restricting employee access permissions on a granular role basis with time-bounded credential authorization.
- Automated PII Masking: Telemetry logs and internal customer service views automatically mask sensitive account numbers and personal identifiers.
- Isolated Environment Segmentation: Physical and logical segregation separating production transactional databases from analytics and testing sandboxes.
Structured data governance guarantees customer privacy and regulatory adherence throughout the data lifecycle.
High-Availability & Fault-Tolerant Architecture
Maintaining 24/7 financial service availability requires software designed to absorb infrastructure hiccups without cascading failures.
Our systems incorporate multi-zone redundancy, intelligent circuit breakers, and dead-letter queues (DLQ) so external provider downtime never brings down core platform capabilities.
- Multi-Zone Redundancy & Failover: Distributing workloads across independent availability zones with automated traffic rerouting during datacenter incidents.
- Circuit Breakers & Graceful Degradation: Preventing connection thread starvation by quickly isolating slow or degrading third-party upstream services.
- Disaster Recovery Preparedness: Automated encrypted backup routines with verified Recovery Point Objective (RPO) and Recovery Time Objective (RTO) targets.
Resilient software design gives operational peace of mind to leadership and seamless reliability to end users.
Regulatory Alignment & Audit Trail Rigor
Every financial movement, configuration change, and administrative action must remain verifiable for internal governance and regulatory scrutiny.
We incorporate append-only immutable audit logging and dual-control maker-checker approval workflows for critical platform actions.
- Immutable Audit Logging: Comprehensive records capturing user identity, IP address, microsecond timestamps, and before/after diffs of all entity changes.
- Maker-Checker Approval Workflows: Enforcing dual authorization on critical actions such as credit limit updates, loan disbursements, or rate adjustments.
- Audit Report Readiness: Structured telemetry schemas simplifying compliance verification for regulatory frameworks and security audits.
Rigorous audit trails keep financial institutions continually prepared for external inspections and risk assessments.
What teams usually discuss before a project starts.
Integration and control requirements vary between organizations. Discovery helps define system boundaries, risks, and the implementation scope.
Can Teknalogi integrate with our existing financial systems?
Integration feasibility depends on available APIs, documentation, access restrictions, and system dependencies. We review these during discovery before defining the integration approach.
Can one system connect to multiple payment providers?
Multiple providers can be considered in the architecture. The scope needs to handle differences in authentication, transaction states, callbacks, refunds, and reconciliation formats.
How do you approach sensitive financial data?
We define data handling and access requirements with your team. Implementation may include encryption, role-based permissions, secrets management, and masking of sensitive information in logs.
Can modernization happen in phases?
A phased approach may work when system dependencies, data consistency requirements, and deployment windows support it. The migration plan is defined after the current environment is mapped.
Does software development automatically provide compliance certification?
No. Technical controls, documentation, assessment support, and compliance responsibilities must be agreed with your risk and compliance teams as part of the project scope.
What does the discovery phase cover?
We map system dependencies, transaction flows, operational roles, access boundaries, and exception scenarios. The output informs the architecture, delivery scope, and acceptance criteria.
How do you test transaction failures and duplicate requests?
Test scenarios can cover timeouts, repeated callbacks, interrupted processing, reversals, and reconciliation differences. The exact cases depend on the transaction model and provider behavior.
Can Teknalogi support the platform after launch?
Post-launch support can include monitoring, issue investigation, maintenance, and further development. Support hours, response expectations, and responsibilities are agreed separately.
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