Connect the systems your business already pays for
If your team copies data from one system to another by hand, or a partner is waiting for your API, we build the connection. We decide which system owns each record, handle failures as carefully as the normal case, and test both. We test and review changes before release, and we can maintain the integration after it goes live.
Start from the work the connection supports
An integration starts with the work it must support: an order moving into operations, a customer record reaching the right system, or your product sending information to another service.
We map which system owns each record, when updates should happen and how conflicts are resolved. That stops two applications quietly disagreeing about the same customer or transaction.
The project runs like every project we take on, with a written scope and one fixed price, a demo every week, and an experienced engineer reviewing every change. See how a project runs.
What we build
New product APIs
Interfaces for the applications and partners that need them. We define inputs, outputs, authentication, permissions and errors so another developer can use the API without guessing.
Third-party integrations
Connections to payment, customer management, operations and other services that offer suitable APIs. We check provider limits, data access and test environments before committing to a delivery plan.
Webhooks and background work
Events and work that continue after a user leaves the screen. Retries are safe and duplicates are detected, so a delayed response doesn't create the same action twice.
Imports and migrations
Moving existing information with validation, reconciliation and a recovery plan. We decide in advance how the old and new systems run side by side during the switch.
Failures you can see and recover from
External systems can be slow, unavailable or return unexpected data. We define timeouts, retry rules, and the steps an operator can take when automatic recovery isn't enough.
Tests cover permissions, invalid data, duplicate events and provider failures as well as successful requests. Monitoring shows failed work and lets you trace a record across systems without exposing sensitive information.
We run this kind of work in our own products. PostDeploy takes errors, logs and deployments from an app's existing Sentry SDK, and CrabGate takes payments through each organizer's own Stripe account.
Taking over an existing integration
We inspect the running behavior, credentials, dependencies and deployment process. The first goal is to understand what must keep working and to ship one safe change.
An undocumented connector doesn't automatically need replacing. Our software takeover process and modernization work stabilize it before anyone changes its design.
What decides the scope
The number of systems is only part of it. Data quality, provider restrictions, volume, security requirements and behavior during failure all affect the work.
Before launch we agree who owns the service accounts, the documentation, deployment and support. An API can be part of a custom web application or a SaaS product, and ongoing changes belong in maintenance.
Questions about integrations
Can you connect any two systems?
Only if both offer a way in, usually an API, webhooks or file exports, and their terms allow it. We check each provider's access, limits and test environment before we fix the scope, and we tell you if a connection isn't possible.
What happens when one of the systems is down?
The work waits and retries on rules we agree in advance, without creating the same order or record twice. Failures that need a person show up where your team will see them, with the steps to recover.
Who owns the integration and its accounts?
You own the code we write. The service accounts and API keys are created in your company's name, and the documentation says where each one is used.
How is an integration priced?
One fixed price for the written scope, agreed before we start. Fees charged by the providers you connect are billed to you by them, and ongoing maintenance is a separate agreement.
Related thoughts
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Planning custom software development: scope and cost
Prepare a custom software development brief: users, workflows, integrations, scope, cost drivers, and acceptance checks before you ask for a proposal.
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Software needs an owner
Software becomes expensive when nobody clearly owns it. Ownership is a role, not a repository permission, and most struggling systems are missing it.
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Maintenance is product work
Most of a product's life happens after launch. Treating maintenance as a cost to minimize is how software quietly degrades and how the best improvements never get made.
Tell us which systems need to work together
Name the systems involved, the information that should move between them, and the task it serves. API documentation or known limits help if you have them, and so does a deadline. You don't need a technical specification.