Fix the payments and financial integrations your software depends on.
I diagnose and repair Stripe, QuickBooks/ERP, OAuth, webhook, data-sync, and reconciliation failures in live B2B systems when money, data correctness, or customer operations are at risk.
Musah Abdulai · Senior Backend & Integration Engineer
One customer · three systems
Stripe
subscription: active
Application DB
subscription: past_due
QuickBooks
invoice: not found
Two things I'm doing right now
Buying a small SaaS?
Independent technical due diligence in five business days. Flat price. Never priced on what I find.
Your Exchange integration stops on 1 October.
Microsoft is disabling EWS in Exchange Online. A $500 assessment tells you exactly what breaks and what the fix costs.
Bring me in when the systems disagree.
A payment succeeded, but the application still shows the wrong subscription state.
A webhook was missed, duplicated, delayed, or handled out of order.
QuickBooks or ERP synchronization stopped, duplicated records, or no longer ties out.
OAuth expiry or reauthorization silently broke a connection.
A backfill or migration changed financial or operational data unexpectedly.
No reliable way to tell which system is right, or to safely repair the affected records.
Repair the workflow, reconcile the data, verify the release.
I own the repair end to end: system mapping, root cause, code changes, targeted data repair, tests, observability, rollout, rollback, and handover.
Stripe and subscription-state repair
QuickBooks and ERP integration repair
OAuth, webhook, retry, idempotency, and background-job failures
Data synchronization, backfills, migrations, and reconciliation
Monitoring and operational handover for critical integrations
Known problem or unclear system?
Known problem
You can name the failure and the required outcome. We scope and quote the repair directly.
Unclear or high-risk problem
Inherited system, unknown cause, or data that may already be inconsistent. Start with a fixed-scope Integration Failure Diagnostic: failure map, affected data, containment, and a prioritized repair plan with a quote.
Prefer to write it down first?
Describe the problem by emailProof from systems I built and operate.
A production SaaS I founded, built, and operate, plus public code, tooling, and credentials.
ClearWIP
A production financial-integration system I founded and operate: construction WIP reporting built on QuickBooks synchronization and Stripe billing. It exercises the same failure modes this service repairs.
- QuickBooks authorization and synchronization
- Data mapping and provenance
- Retries, idempotency, and background processing
- Reconciliation and deterministic financial calculations
- Multi-tenant data boundaries
- Stripe subscriptions and billing
- Deployment, monitoring, backups, and recovery
Who this is for
Good fit
- You run existing B2B software with users, revenue, meaningful internal operations, funding, or a committed customer launch.
- You can name the payment, integration, migration, reliability, or production problem.
- You can provide repository, test, data, and infrastructure context safely.
- Correctness, rollout, and recovery matter to you.
Not a fit
- Your project is idea-only, equity-only, or a speculative MVP with no budget.
- You need a simple API hookup or ordinary CRUD work that does not justify senior ownership.
- Repository or system access is not available, or no one can approve the work.
- You want the cheapest possible implementation regardless of verification or risk.
Questions
- Do I need a diagnostic first?
- No. If the problem and the required outcome are clear, I scope and quote the repair directly. The paid Integration Failure Diagnostic is for inherited systems, unclear causes, possibly-inconsistent data, or high production risk.
- What access do you need?
- I usually need repository access, a safe test environment, relevant logs, and provider dashboards (Stripe, QuickBooks/ERP, cloud console) — plus enough production context to verify behavior after release. We scope access at kickoff, and I never ask for secrets over email or chat.
- Can you fix historical data?
- Yes, once we agree the affected records, the source of truth, the backup, and the repair rules. I establish what is recoverable first, then repair within an approved plan.
- Do you work with AI-generated code?
- Yes. The relevant question is whether your system’s behavior, data boundaries, failure modes, deployment, and recovery are dependable — not how the first draft was produced.
- Do you offer ongoing support?
- When monitoring, incident response, integration changes, or operating responsibility justify it, I offer a defined support scope after the repair. Support is optional and scoped separately.
Tell me what is failing, what it affects, and what “fixed” needs to mean.
Musah Abdulai 15 minutes. Clear yes or no after.