A real public API for your customers, a third-party data import that actually works, an OAuth/SSO story that survives a security review — Levelbrook designs and ships the integration layer across Rails, Python, and Node.js, billed corp-to-corp as a scoped project or staff augmentation.
APIs and integrations are where a lot of Rails projects quietly accumulate risk: an endpoint shipped under deadline that customers now depend on, an import that breaks every time the partner changes a column, an auth flow that mostly works until a security review finds the gap. Levelbrook builds the API and integration layer to hold up — designed for the consumers who'll actually use it, versioned, documented, and observable from day one.
This is hands-on backend work backed by real production integrations: ERP mailer integrations, server-driven UI runtimes across four platforms, MCP support for desktop clients, and the JWT/auth incidents that teach you where the sharp edges are. It's available as a scoped project with a fixed price or as ongoing staff augmentation.
Every build ships with written-down decisions and documentation, so your team owns it after the engagement ends — no permanent dependency on the contractor. Billed corp-to-corp through Levelbrook LLC, with MSA, SOW, NDA, and COI ready on day one.
REST and GraphQL APIs designed for real consumers — versioned, rate-limited, paginated, and documented well enough that partners self-serve.
Imports and syncs with third-party systems, including legacy software — built to validate, fail loudly, and recover without data loss.
Authentication, JWT, and single sign-on implemented to survive a security review, including the edge cases the happy path skips.
Reliable, idempotent, retry-safe event delivery with audit-grade logging, so your partners trust the integration.
Either. Well-defined API or integration builds work well as fixed-scope projects with a quoted price; open-ended or evolving work runs as hourly staff augmentation. Both billed C2C through Levelbrook LLC.
Whichever fits your consumers. We've built and run both in production and will recommend based on who's integrating and how, not on preference.
Yes — OAuth, JWT, and SSO implemented for the edge cases, not just the happy path, with the logging and token handling a reviewer will look for.
That's often the job. We've integrated with software that predates HTTPS — the work is building defensively so the integration fails loudly and recovers cleanly.
Yes. Every build ships with documentation and written-down decisions so your team owns it after the engagement, with no lasting dependency on us.
Describe what needs to talk to what. You'll get an honest read on the approach and how we'd scope it within one business day.