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Finstack

Enterprise Application Development

Building software that carries real business weight

We design and build enterprise applications with the reliability, security and maintainability that critical operations demand.

Our engineers work across the stack, from user interfaces to services, data and infrastructure, with particular depth in Java enterprise applications, relational databases and integration-heavy systems.

  • Java enterprise engineering

    Robust services on enterprise application server environments.

  • Full-stack development

    Modern front ends connected to well-structured back-end services.

  • Workflow & rules engines

    Configurable process and decision logic for complex operations.

  • Software quality engineering

    Automated testing, code review and quality gates throughout delivery.

Application Modernization

Modernizing without disrupting operations

Legacy systems often hold decades of business logic. We modernize them incrementally, so value arrives early and risk stays manageable.

We assess existing applications, identify the changes with the best return, and modernize in stages: improving code quality, introducing APIs, containerizing workloads, refreshing user interfaces and automating delivery.

Established appstageAPIcontainerServicecontainerUIcontainerCI/CDbuildtestscandeploy
  • Legacy modernization

    Incremental refactoring and re-platforming of established applications.

  • UI/UX modernization

    Clearer, faster interfaces for operations-heavy users.

  • Code quality & maintainability

    Reduced technical debt and better test coverage.

  • CI/CD engineering

    Automated build, test and deployment pipelines.

Integration & API Engineering

APIs and integrations designed to last

Good integration work is invisible when it succeeds. We build APIs and data flows that are secure, observable and easy to evolve.

From REST API design to event-driven architectures and ERP integration, we focus on clear contracts, strong security, sensible error handling and documentation that other teams can rely on.

ChannelsREST · eventsCore bankingREST · eventsERPREST · eventsTrade platformREST · eventsIntegration layerauth · transform · audit
  • REST API development

    Consistent, versioned, well-documented APIs.

  • Event-driven architecture

    Asynchronous integration patterns for scalable systems.

  • Data transformation

    Mapping and enrichment between formats and systems.

  • ERP integration

    Connecting enterprise resource planning systems with operational platforms.

  • Microservices enablement

    Decomposing services where it genuinely helps.

  • Workflow orchestration

    Coordinating multi-system business processes reliably.

Cloud & Containerization

Consistent deployment, on-premise or in the cloud

Containers and automation make environments reproducible and releases predictable, whether systems run in a bank's data centre or a cloud platform.

We containerize applications with Docker, orchestrate them with Kubernetes where appropriate, and automate infrastructure so environments can be created and changed reliably.

  • Docker & Kubernetes

    Containerized workloads with sensible orchestration.

  • Cloud and on-premise deployment

    Deployment models matched to regulatory and operational constraints.

  • Infrastructure automation

    Repeatable, version-controlled environment provisioning.

Database & Performance Engineering

Fast, dependable systems under real load

Performance problems are usually found in production. We find and fix them earlier, from database design to application tuning.

We have depth in Oracle database integration and optimization, along with profiling and tuning of enterprise applications to improve response times and throughput under realistic load.

  • Oracle database integration

    Schema design, data access and integration for enterprise workloads.

  • Database optimization

    Query, index and data model tuning.

  • Application performance

    Profiling, load testing and targeted optimization.

Product Engineering & Innovation

From idea to working software

Some problems need something new. We take ideas from discovery through prototype and proof of concept to production-ready software.

Our product engineering work starts with understanding the problem and testing assumptions quickly. Prototypes and proofs of concept answer the important questions early; solution architecture and disciplined engineering take the result to production.

This capability extends beyond banking. The same engineering approach applies to document-intensive operations and enterprise workflows in other sectors.

Discoverproblem framingPrototypeworking softwareProveproof of conceptArchitecttarget designDeliverproduction build
  • Product discovery & prototyping

    Rapid exploration of ideas with working software.

  • Proof-of-concept development

    Focused builds that test feasibility and value.

  • Solution architecture

    Architectures that balance capability, cost, security and change.

  • Applied AI prototyping

    Testing AI approaches on real tasks before committing to scale.

  • Technical consulting

    Independent, practical advice on technology decisions.

  • Ongoing engineering support

    Continued enhancement, maintenance and optimization.

Have a system that needs to change faster?

Tell us about the challenge. We will respond with a considered view on how we could help, and who on our team would be involved.