Your systems finally talk to each other. First API endpoint live in 18 days.
We build API connections around your architecture, not ours. Every endpoint ships with error handling, retry logic, and real-time monitoring baked in. You get systems that stay running at 99.97% uptime after go-live.
Submit your brief → call within 48 hours → scoped proposal in 3 days → build starts within 1 week of sign-off
Your integrations are costing you more than you think
Manual syncs, broken webhooks, off-hours alerts. They compound fast. Here is the difference between patching problems and solving them.
Manual reconciliation between disconnected systems costs more every month you wait.
From signed agreement to first live API in 18 days
Every project follows this five-step sequence. You get a fixed scope, a clear handoff, and a go-live date you can commit to internally.
Integration Audit
We map every system involved: ERP, ecommerce, CRM, fulfillment, analytics. We document authentication methods, rate limits, data schemas, and latency constraints. No code starts until the audit is complete.
Architecture Design
You receive a full architecture brief covering data contracts, error handling, retry logic, and system relationships. You review and approve before build starts.
Build and Test
We build every endpoint against the agreed spec. Every integration ships with unit tests, sandbox integration tests, and a load test at 3x your projected peak volume.
Go-Live and Deploy
We deploy to production with traffic monitoring and rollback scripts ready. Redefine engineers stay on standby. Your team validates the first live sync end-to-end before we hand over the keys.
Monitor and Expand
30-day dedicated support period with direct Slack access to your build engineer. Ongoing managed support plans are available. Most clients add one to two new endpoints within the first quarter.
Custom API integration projects we deliver every week
ERP to ecommerce inventory sync
Real-time stock levels from Dynamics 365 or NetSuite pushed to Shopify Plus or Magento 2. Orders flow back automatically. No manual exports, no overnight batches, no overselling.
Customer relationship management to ERP customer sync
Salesforce accounts and contacts sync to your ERP in real time. Every ecommerce order appears on the CRM record automatically. No duplicate entry. No missing data.
Third-party logistics and fulfilment API
Orders from any storefront push to your 3PL provider automatically. Tracking updates flow back to the customer in real time. No manual forwarding.
Headless ecommerce API layer
Custom API endpoints that bridge your headless frontend and backend systems. Cart, pricing, product catalog, and checkout run through one API contract. One source of truth for every customer-facing transaction.
Image: Engineer configuring a REST endpoint bridge between Microsoft Dynamics ERP and Shopify Plus, a typical Day 10 deliverable on a standard integration engagement.
DrivingI: five systems connected, one real-time data layer
DrivingI ran their ERP, CRM, and marketing platform as three separate data silos. Inventory levels at point of sale were wrong. Customer approvals depended on manual email chains between departments. Reporting lagged 48 hours behind reality.
We built custom REST and webhook APIs connecting Dynamics 365, Salesforce CRM, and a BI reporting layer. Real-time inventory sync eliminated overselling. A custom approval API automated the entire B2B purchase workflow.
- 5 systems connected under a single API hub
- 0 manual reconciliation steps remaining
- 48-hour reporting lag reduced to real-time
"For the first time, our ops team and sales team saw the same inventory number at the same time. Moving approvals from email chains to an API call cut our B2B order processing time in half."
The architecture layer that keeps your data moving
Every integration we build follows the same core pattern. Async queuing. Structured error handling. Dead-letter routing. Isolated test environments. That is what 99.97% uptime looks like in production.
Why teams choose us over other API integration companies
Most API integration projects fail because the client cannot see progress and support disappears after launch. Here is how we fix both problems.
| Capability | Typical partner | Redefine |
|---|---|---|
| Day-by-day implementation visibility | Weekly status calls only | Shared dashboard, real-time |
| Architecture brief before build | Starts coding without it | Signed off before day 8 |
| Fixed-price option available | Time-and-materials only | Fixed-price from $2,400 |
| Error handling designed upfront | Added reactively post-go-live | Dead-letter queue and retry in spec |
| Post-go-live hypercare period | Handoff ends on go-live day | 30-day direct Slack access |
| Standalone architecture audit | Only with full engagement | $800, credited to build |
API integration consulting: your questions, answered
Most single-endpoint integrations go live within 14 to 18 days from signed statement of work. Multi-system projects (ERP plus CRM plus ecommerce) take 6 to 10 weeks. Timeline depends on authentication complexity and legacy system constraints. Every engagement starts with a 3-day audit that produces a realistic timeline before build begins.
Microsoft Dynamics 365, Salesforce, Shopify Plus, Magento 2, NetSuite, and SAP are our most common source and target systems. We also work with custom-built platforms and legacy ERPs through REST, SOAP, and flat-file bridges. See our application integration services page for a fuller list.
Yes. Single-endpoint integrations start from $2,400 on a fixed-price basis. Full ERP-to-ecommerce stacks start from $12,000. Standalone architecture audits are $800 and are credited against any subsequent build. Time-and-materials retainers are also available for ongoing maintenance and expansion work.
Every integration we build includes structured error handling, dead-letter queues, and real-time alerting. When an upstream system goes down, jobs queue instead of failing silently. We also offer a 30-day hypercare period post-launch with direct Slack access to your build engineer, and ongoing managed support retainers for teams that want a longer safety net.
Yes. We build flat-file bridges, SFTP-based exchange layers, and database-level connectors for legacy systems with no REST or SOAP surface. Feasibility is assessed as part of the free architecture brief. In some cases a SOAP-to-REST adapter layer is the most pragmatic route.
iPaaS tools like Zapier or MuleSoft are strong for standard connectors but often fall short on custom business logic, legacy SOAP endpoints, or high-volume transactional flows. We build custom API integration solutions where the data contract, error handling, and performance envelope are designed specifically for your systems rather than adapted from a generic template. Also see our enterprise application integration services for iPaaS-adjacent engagements.
Is this the right project for your team?
Our API integration services are built for a specific type of project. Check whether yours fits before booking a call.
Good fit for
- You need two or more systems to share data in real time or near-real time
- Your team is losing hours per week to manual data entry or export-import workflows
- You want a fixed scope and a go-live date you can commit to internally
- Your systems include ERP, CRM, ecommerce, fulfilment, or business intelligence platforms
- You need custom logic (approval flows, pricing rules, conditional routing) that iPaaS tools cannot handle
Not a fit if
- You only need a simple trigger between two software-as-a-service tools with no custom logic
- You want staff augmentation with no defined deliverables or timeline
- Your systems are fully cloud-based with native connectors that already cover your use case
- You need a managed iPaaS license rather than custom endpoint development
Not sure? Tell us your situation and we will be straight with you.
Start your API integration project
Tell us about your systems and what needs to connect. We respond within 48 hours with a call slot and a preliminary architecture brief.
Call within 48 hours → proposal in 3 days → build starts within 1 week of sign-off
Brief received
We will review your workflow and send a scoped proposal within 3 business days.
Ready to connect your systems?
Clients go from first conversation to first live API endpoint in under four weeks. Start with the $800 architecture audit. It pays for itself.
Submit your brief → call within 48 hours → scoped proposal in 3 days → build starts within 1 week of sign-off
Your team commits 2 to 3 hours per week. That covers the kick-off call, architecture sign-off, progress reviews, and go-live validation. We handle everything else.
Image: Redefine engineers and client team reviewing final monitoring dashboards at go-live handover.