SECURITY 7 min read
5 Critical Security Boundaries Often Overlooked in Rapid MVPs
Essential architectural boundaries for protecting user data, securing service role keys, and preventing API credential leakage before launch.
// SYSTEMS ARCHITECTURE • PRODUCTION SCALING • SECURITY
You proved the product.
We build the architecture to scale it.
Modern tools allow innovative teams to ship software faster than ever. When it is time to onboard paying customers, handle high volume, and pass security reviews, Vexn provides the senior engineering foundation so you scale with total confidence.
TURNAROUND 48-Hour Audit
STANDARDS OWASP & ASVS
DELIVERABLE Direct GitHub PRs
// AUDIT HEALTH MATRIX
Production Readiness Credential & API Security Verifies strict boundary isolation for all third-party API keys and server-side environment variables.
VERIFIED Database Concurrency & Pooling Configures connection pooling and query indexes so databases remain fast under concurrent user traffic.
OPTIMIZED Payment & State Idempotency Guarantees transactional consistency for Stripe webhooks and mission-critical customer workflows.
HARDENED Edge Infrastructure & Cost Audit Optimizes serverless execution and global edge caching for lightning speed and predictable hosting costs.
SCALABLE Turnaround: 48 Hours Zero Downtime Migration
// HOW WE PARTNER WITH FOUNDERS
Fixed-scope engineering engagements
No ambiguous hourly retainers or junior hand-offs. You partner directly with senior engineers focused on production outcomes.
01 // CODEBASE AUDIT
The 48-Hour Production Audit
A comprehensive pre-launch inspection of your application codebase. We review credential security, database query efficiency, payment flows, and infrastructure health.
02 // FULL-STACK ENGINEERING
Architecture Hardening & Scale
We implement production-grade architectural improvements directly in your GitHub repository: database connection pooling, idempotent webhook handlers, caching layers, and CI/CD.
03 // ADVISORY & LEADERSHIP
Fractional Senior Tech Lead
Ongoing senior engineering partnership. As your team ships new features and iterates rapidly, we review pull requests, guide technical decisions, and ensure continuous stability.
// FOUNDER EDUCATIONAL GUIDES
View all publications → What every non-dev founder must know
DATABASE & SCALE 9 min read
Why Supabase & Neon Freeze at 100 Concurrent Users
A plain-English breakdown of connection exhaustion, unindexed foreign keys, and how connection pooling prevents 500 errors when traffic surges.
CLOUD COSTS 6 min read
How We Slashed Cloud Infrastructure Bills by 75% for an MVP
Real numbers from decoupling expensive shared hosting into serverless edge architecture: faster page loads, zero maintenance, and 75% lower monthly cost.
// READY TO LAUNCH WITH CONFIDENCE?
Get a senior engineer's eyes on your AI codebase.
Our 48-Hour Codebase Audit gives you a clear, non-technical breakdown of security risks, database bottlenecks, and direct GitHub pull requests fixing the critical issues.