Systems that behave like one product.

The specialty

Making independent systems behave like one product.

The hard part of an integration is rarely the API call. It's everything downstream of it — the retry that arrives twice, the webhook that never arrives at all, the two systems that both report success while disagreeing about the truth. Prayantr's deepest specialty is that unglamorous machinery: the layer enterprise deals actually live or die by.

• API design & partner-facing platforms — specs, versioning, developer experience for the partners who'll build against you.
• Third-party system integrations — payments, ordering, logistics, ERP.
• Sync pipelines at scale — catalog, order, and inventory data flows that stay correct under load.
• Partner certification programs — sandboxes, test suites, and onboarding gates a partner can actually pass.
• Legacy & on-prem connectors — when the system that matters lives in a back office and was never meant to talk to anything.
• Reliability engineering — retries, idempotency, reconciliation, and the monitoring that tells you which one just failed.

Who this is for

An enterprise deal, waiting on engineering.

The pattern is almost always the same shape: a contract or partnership is signed, pending an integration — and the first attempt has stalled in webhooks, retries, and mismatched data. The commercial team is asking for a date; engineering keeps discovering another edge case.

• SaaS platforms with partner ecosystems — where every new partner is another integration surface to get right.
• Commerce & marketplace platforms — where sync correctness is the product, not a feature of it.
• API-first products — where the API is the interface, and its reliability is the pitch.

Why it stalls

Auth is rarely the hard part. Edge cases are.

Most first attempts pass the demo and fail the certification, because the demo only exercises the happy path. What actually breaks an integration:

• Retries that aren't idempotent — the same event, processed twice, silently double-counts something downstream.
• Webhooks that arrive out of order, or not at all — and nothing in the system notices until finance does.
• Two sources of truth that quietly drift — each system correct on its own terms, disagreeing with the other.
• A partner's sandbox that doesn't behave like their production — so certification passes and the integration still breaks live.

Idempotency, reconciliation, and monitoring aren't polish added at the end — they're the parts of the design that make the other parts trustworthy.

How it runs

Scoped in writing, then built end to end.

1. A 30-minute call

   What the integration needs to do, what's blocking it today, and what the partner or contract actually requires. Bring the spec if there is one — it's the fastest way into a real conversation.

2. A fixed-scope proposal

   In writing, within 48 hours of the call. No hourly billing, so scope creep is a conversation, not a surprise line item.

3. The build

   Idempotent syncs, reconciliation that catches what slips, monitoring that pages the right person before finance notices. Access through your systems, revocable by you at any time.

4. Certification and handover

   A certification path the partner signs off on, and documentation your own engineers can run the integration from — not a dependency on Prayantr staying involved.

The shape of it

How this engagement usually goes.

Client work is confidential by default, so what follows is pattern, not portfolio. Named references are shared in conversation.

Why this firm

Two decades of judgment about where things break.

Integration reliability is a craft learned mostly from the incidents that taught it — which retries duplicate work, which sandboxes lie, which reconciliation jobs get skipped under deadline pressure. That judgment sits behind every engagement, principal-led, with no bench between you and the person doing the work. More on the entity and the person on The Firm.

MSA + SOW on every engagement · Fixed scope, fixed price, no hourly billing
IP assigned to you on payment · 30-day exit · USD invoicing, worldwide