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🧭Led by a Fortune 100 engineering leader

Executive-Level Architecture for Transaction-Heavy Platforms

I help fintech and payment-enabled SaaS companies scale reliably, reduce technical risk, and modernize cloud systems—without hiring a full-time VP/CTO.

Led large-scale payment systems, cloud modernization, and globally distributed engineering teams.

Book a Strategy Call→See How We Work
Scalability
Design systems that handle growth without rewrites, downtime, or fragile workarounds.
Reliability
Build strong observability, incident readiness, and resilient transaction flows.
Cost Control
Reduce cloud waste and operational load while improving performance and stability.

How I Can Help

Pick the engagement style that fits your stage. Most clients start with an assessment, then continue with a retainer or implementation sprint.

🧪

Platform Readiness Assessment (2 weeks)

A structured review of architecture, scalability, and transaction reliability—ending with a prioritized roadmap your team can execute.

  • ✓Architecture & scalability review (services, data, bottlenecks, failure modes)
  • ✓Payment / transaction flow analysis (retries, idempotency, timeouts, reconciliation)
  • ✓Observability & incident readiness review (monitoring, logging, on-call, runbooks)
  • ✓Executive-ready report + 30/60/90-day action plan
Discuss your situation→
🧠

Fractional Architecture Lead (Monthly)

Ongoing senior leadership for teams that need strong architecture decisions and reliability discipline—without a full-time executive hire.

  • ✓Design reviews & architecture decisions aligned with business priorities
  • ✓Reliability and scalability planning (SLOs, resilience patterns, capacity)
  • ✓Cloud modernization and cost optimization guidance
  • ✓Hiring support and engineering process improvements
Discuss your situation→
⚙️

Targeted Implementation Sprint

Hands-on execution for the most critical items discovered in the assessment—delivered with senior-level rigor and practical tradeoffs.

  • ✓Fix high-impact reliability bottlenecks (timeouts, retries, queueing, hotspots)
  • ✓Improve transaction safety (idempotency, reconciliation, auditability)
  • ✓Upgrade CI/CD and release safety (rollback, testing strategy, deployment flow)
  • ✓Ship a measurable improvement within weeks, not quarters
Discuss your situation→
All engagements are led by Nidhal Hamdi. Contracts and invoices are issued by Nephexis.

What Clients Say

Selected feedback from recent collaborations.

"
Clear architecture thinking, fast execution, and a pragmatic approach to reliability. The roadmap was immediately actionable for our team.
Moutaa Chebbi
Moutaa Chebbi
CEO, Keva

Why This Works

We focus on senior architecture leadership—prioritizing reliability, transaction safety, and scalable system design.

✓
20+ years of software architecture and engineering experience
✓
Executive-level leadership in high-scale, mission-critical environments
✓
Deep experience with payments and transaction systems
✓
Cloud modernization and migration experience (AWS-focused)
✓
Strong incident response mindset and platform stability discipline
✓
Pragmatic tradeoffs: ship value without creating long-term debt
✓
Clear communication with founders, product, and engineering teams
✓
Tunisia-based delivery with global standards and time-zone overlap

Let’s De-Risk Your Platform and Scale With Confidence

If you’re growing fast, handling payments, or feeling reliability strain—let’s talk. I’ll help you find the fastest path to stability and scale.

Book a Strategy Call→