Services

Engineering engagements built around your roadmap

Choose the model that fits your stage, team and delivery goals.

Clients do not need to outsource an entire platform. Provide a technical specification, API document, Jira task, user story or individual development requirement, and CARDELSE can design, develop, test and deliver the requested component for integration into the existing system.

Full Product Development

End-to-end delivery from architecture and design through to launch and iteration.

Modular Fintech Development

Production-ready components that slot cleanly into your existing stack.

Task-Based Engineering

Scoped, well-defined tasks with clear deliverables and predictable outcomes.

Custom Fintech Projects

Bespoke technology for business models that do not fit off-the-shelf platforms.

Existing Platform Engineering

Feature expansion, refactoring and improvements to your current codebase.

API Integration

Connect processors, banks, wallets and compliance services to your systems.

Dedicated Engineering Teams

Embedded fintech engineers working as an extension of your team.

Architecture and Consulting

System design, technical reviews and strategy for scalable platforms.

Legacy System Modernisation

Modernise and de-risk legacy financial systems and integrations.

QA and Technical Documentation

Functional, integration and security testing plus clear technical documentation.

Task-Based Engineering

Assign a single, well-defined requirement and we deliver it for integration into your system.

One API connectorOne backend serviceOne administration screenOne wallet functionOne card controlOne reporting moduleOne transaction workflowOne reconciliation taskOne provider migrationOne existing-system improvement

Custom Fintech Projects

CARDELSE develops bespoke technology for business models that do not fit standard off-the-shelf platforms.

Custom payment flowsMerchant collection and payout systemsAgent and distributor platformsPrivate wallet ecosystemsHybrid fiat and crypto productsCard funding workflowsTreasury management modulesFee and commission enginesCustom operational dashboardsBespoke middleware and API layersClosed-loop financial ecosystems

Existing Platform Engineering

Extend, improve and modernise your current platform without a full rebuild.

Existing codebase developmentFeature expansionProvider replacementAPI migrationArchitecture refactoringPerformance optimizationTechnical debt reductionLegacy modernizationBack-office improvementThird-party integrations

Dedicated Fintech Engineering

Sprint-based delivery with embedded engineers aligned to your roadmap.

Sprint-based deliveryJira-based task executionEmbedded engineering teamsBackend developmentFrontend developmentAPI engineeringIntegration engineeringQATechnical documentation

Agent, distributor and treasury capabilities

Infrastructure for partner-based models and treasury operations.

Agent balance managementDistributor limitsAgent-to-customer funding workflowsPartner commission calculationTreasury settlementPartner balance controlsFee sharingRevenue sharingApproval workflowsCash-handling partner integrations

CARDELSE does not accept or handle cash itself; it builds the software that integrates with cash-handling partners selected by the client.

Build the Financial Infrastructure Your Product Needs

Tell us what you are building. Our engineering team will help you scope the right architecture and delivery model.

Discuss Your Project Submit a Technical Task