API & integration audit
3 to 5 working days
We review your APIs, authentication, timeouts, retries, webhooks, idempotency, logs, and monitoring. You leave with a Technical Integration Report: problems, risks, quick wins, target architecture, roadmap.
- Map of API contracts and breaking points
- OAuth2 / JWT, errors, timeouts, and retries
- Webhooks, idempotency, logs, and observability
- Integration report and prioritized roadmap
Guarantee — If the report teaches you nothing, we do not invoice.
Payment Architecture Audit
3 to 7 working days
From payment request to settlement: API, provider, webhook, transaction, ledger, reconciliation. You get an Architecture Assessment, a Risk Map, and a Technical Roadmap — plus a Payment Reliability Score.
- Reliability score by domain, out of 100
- Duplicate payments, replayed webhooks, inconsistent states
- Quantified loss and double-charge risks
- Remediation plan prioritized in days
Guarantee — If the report teaches you nothing, we do not invoice.
Architecture review
3 to 5 working days
Current state, problems, risks, target architecture, migration roadmap. We work on your code, diagrams, and infrastructure — not a generic slide.
- C4 model and target architecture diagram
- ADRs and architecture principles
- Prioritized technical risks
- Migration roadmap
Production reliability audit
5 working days
Timeouts, retries, circuit breakers, observability, high availability, runbooks. You leave with a Production Reliability Report — what will break, how you will know, and how long recovery takes.
- Timeout, retry, circuit breaker, rate-limiting review
- Logs, metrics, traces, and alerts
- Failure scenarios and MTTR estimate
- Runbooks and remediation plan
API security audit
3 to 5 working days
OAuth2, JWT, RBAC, API gateway, secrets, webhook authentication, OWASP API Security. Findings ranked Critical / High / Medium / Low, with a remediation plan.
- Authentication and authorization review
- Webhook and secrets security
- Findings ranked by severity
- Prioritized remediation plan
Performance engineering
1 to 3 weeks depending on scope
Reduce response time and increase platform capacity: baseline, profiling, bottleneck identification, optimization, load testing, validation.
- Latency, throughput, and error baseline
- CPU, memory, query, and Kafka-lag profiling
- Fixes prioritized on real bottlenecks
- Validation with a load test
Reconciliation diagnostic
3 working days
We take one month of your real data — operator exports on one side, application transactions on the other — and produce the match. You get the exact gap and its origin.
- Quantified gap statement
- Identified causes
- Affected volume
Go-live readiness review
5 working days
Before production: load testing, operator-outage scenarios, recovery plan, go-live checklist.
- Load-holding report
- Cutover plan
- Blockers
Technical due diligence
2 to 3 days
For investors and acquirers: an independent assessment of architecture, technical debt, and execution capacity of a financial-sector target.
- Structured report
- Risk level by domain
- Estimated remediation cost
- Debrief to the investment committee
In-house training
2 days, on your premises
Integrate payments, secure an API, observe production — two days with your technical team, on your own cases.
- Training materials
- Exercises on your code
- Action plan at the end