Backend Engineering: Services, APIs and pipelines that keep working.
The part of your product nobody sees, and usually the first to break. We build and take over APIs, third-party integrations, background jobs and data layers, in Go or in whatever your stack already runs.
When we can help
For teams starting a new backend for a product, CRM or customer portal, extending or stabilising one that already exists, or connecting systems that were never designed to talk to each other. We can own the backend on its own or work alongside your engineers.
APIs and service design
APIs your clients can depend on, with authentication, authorisation and versioning designed in from the start rather than retrofitted after launch.
Integrations with other systems
Payment providers, CRMs, marketplaces and internal tools connected, including the undocumented ones. Rate limits, partial outages and changing payloads are handled where they actually occur.
Background processing and pipelines
Long-running and high-volume work moved onto queues and workers, where a failed job is recovered rather than repeated or lost.
Data and performance
A data layer that stays fast under your real workload. We model the data around how it is written and read, and profile queries, caching and concurrency before adding hardware.
From first look to handoff
01
Map the system
Walk us through the product or codebase, the systems it talks to and the load it has to handle. We agree together what the first release or change must do.
02
Design the contracts
We settle APIs, data models and integration points before building, and test the most uncertain parts first, so surprises come early, not at launch.
03
Build and integrate
We build the services with tests around the behaviour that matters, then connect them to your frontend, data sources and third-party systems.
04
Deploy and hand over
We ship with logging, metrics and documentation your team can work from, and agree up front who maintains it. Ongoing support is available and scoped with the project.
Inside the work
Technical writing by the engineers behind status403.
Building and Scaling a Marketplace Monitoring Pipeline in Go
How we built a marketplace monitoring pipeline in Go to track changing listings, control concurrent workloads and memory use, and support sales and product-trend analysis.
emap-go: a high-fanout IMAP client for Go
Why we built our own IMAP client, and how it benchmarks against emersion/go-imap on the workload that actually breaks: thousands of tasks reading mail from a handful of inboxes.
Free consultation
Tell us what your backend needs to do.
Book a free 30-minute call. We'll discuss your project, assess feasibility, and outline a clear path forward.
We’ll email you a link to choose a time.