Connect Every System. Eliminate Every Silo.
Most businesses run on a patchwork of systems that were never designed to talk to each other - and every gap in that mesh costs time, accuracy, and money. Jspace designs and builds the APIs that close those gaps: clean, documented, versioned interfaces that connect your legacy infrastructure to modern cloud services and give every downstream application the data it needs in real time.
What we focus on
API design and documentation
We design APIs contract-first using OpenAPI spec, so every endpoint is documented before it is built and every integration team knows exactly what to expect.
Legacy system bridging
We build adapter layers that expose data from older ERP, CRM, or on-premise systems through modern REST or GraphQL interfaces without requiring a full system replacement.
Third-party and cloud integration
From payment gateways and logistics APIs to Salesforce, SAP, and AWS services, we handle the authentication, data mapping, and error handling that third-party integrations demand.
Monitoring and reliability engineering
We instrument every integration with health checks, alerting, and retry logic so you know when a connection fails and the system recovers automatically.
Key capabilities
- REST and GraphQL API design and development
- OpenAPI/Swagger documentation and contract-first development
- Legacy ERP, CRM, and on-premise system adapters
- OAuth 2.0, JWT, and API key authentication
- Webhook architecture and event-driven integrations
- Rate limiting, caching, and API gateway configuration
Applications we build
CRM and ERP synchronisation
Mid-market companies running a CRM for sales and a separate ERP for finance and inventory deal with duplicate data entry and mismatched records that cause invoicing errors and missed follow-ups. We build a real-time sync layer that keeps both systems consistent without manual reconciliation.
Legacy-to-cloud migration layer
Manufacturers operating on-premise ERP or MES systems that cannot connect to modern cloud services need a bridging API layer that exposes legacy data through modern interfaces without requiring a full system replacement.
Payment and logistics API integration
E-commerce businesses managing multiple payment providers and carrier APIs through separate manual processes gain a unified integration layer that handles order confirmation, payment capture, fulfilment trigger, and shipment tracking in a single automated flow.
Automated data pipeline
Businesses aggregating data from multiple sources - marketplaces, ad platforms, logistics providers - into reports assembled manually each week can replace that process with an automated ETL pipeline that delivers clean, current data to their analytics layer on schedule.
Frequently asked questions
What is the difference between API development and API integration?
API development means building a new interface from scratch - designing the endpoints, data contracts, authentication, and documentation for a service you own. API integration means connecting to an existing third-party API, handling its authentication flow, mapping its data to your internal model, and managing errors when it misbehaves. We do both, often within the same project.
Can you integrate our legacy ERP system with modern cloud applications?
Yes - bridging legacy systems to modern cloud services is one of the most common integration projects we take on. We build an adapter layer that exposes your ERP data through a clean REST or GraphQL API, enabling any modern application to consume it without touching the legacy system directly.
How do you handle security in API integrations?
Security is designed in from the start - not added at the end. We implement OAuth 2.0 or JWT authentication, enforce HTTPS everywhere, apply least-privilege access controls, and validate all input at the API boundary. For integrations carrying sensitive data we also add field-level encryption and comprehensive audit logging.
How long does an API integration project take?
A focused integration between two well-documented systems can take as little as 2 to 4 weeks. Projects involving undocumented legacy systems, complex data transformations, or multiple connected services typically run 6 to 12 weeks. We assess scope in a free discovery call before committing to a timeline.
What happens when a third-party API changes or goes down?
We build integrations with this scenario in mind from the start - retry logic, circuit breakers, and alerting on failure so your team knows immediately when a connected service is unavailable. For critical integrations we also build queue-based architectures that buffer requests and replay them once the external service recovers.
Ready to connect your systems?
Describe your current stack and we'll map out which integrations will deliver the most value first.
Start your project