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01 / Principal Engineering · Production Systems

We Fix, Harden & ScaleWeb Systems That Matter. — Reliable Web Systems, Built and Fixed

Production-grade engineering for systems that matter. For founders, CTOs, and high-growth teams whose applications cannot afford downtime, security leaks, or amateur code — from zero-downtime production rescue to greenfield platform builds.

Book an Engineering Audit→
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credited toward your project
Or describe your situation in 30 seconds↓
◆Principal Engineers
◆No Account Managers
◆Intellectual Property Yours Day One
SYS.MATRIX/ENGINEERING_PODS
ONLINE
[01]BUILD & MODERNIZE
READY

Clean 0-to-1 architectures, modern web systems, and legacy platform rewrites.

[02]HARDEN & SECURE
HARDENED

AI prototype hardening, row-level security (RLS), and zero-trust auth flows.

[03]SCALE & DEPLOY
OPTIMIZED

High-throughput cloud infra, latency optimization, and zero-downtime CI/CD.

[04]RESCUE & MAINTAIN
1-2H SLA

1–2h incident war room response for crashed servers, deadlocks, and DNS faults.

DIRECT PRINCIPAL DISPATCHExplore matrix
02 // CAPABILITIES & REMEDIATION

What we build and fix, end to end.

Engagements are scoped as production systems: the platform that ships, the infrastructure that keeps it alive, and the documentation that lets your team own it.

01

Web Systems & MVPs

Clean-slate architectures scoped to prove the thesis; production-grade TypeScript built for real workloads from day one.

Next.jsNodeTypeScriptDistributed Systems
02

Platform Modernization & Performance

Eliminating legacy technical debt, optimizing database queries, and dropping LCP under 0.8s without breaking organic SEO rankings.

Query IndexingEdge Caching100/100 VitalsZero SEO Loss
03FLAGSHIP RESCUE PRACTICE

AI & Vibe Coding Rescue · Security & RBAC

Hardening fragile Cursor, Claude, and Lovable prototypes: row-level security (RLS), server-only boundaries, tenant isolation, and eliminating client-side credential leaks before your launch.

Auth & RBACPostgres RLSServer-Only BoundariesRuntime Zod GatesZero Secret Leaks
04

Cloud Infrastructure & CI/CD

Automated preview environments, zero-downtime blue-green deploys, and automated rollback gates.

DockerAWSK8sCI/CD
05< 1–2H SLA GUARANTEE

Emergency Outage Triage

Rapid incident bridge joins within 1–2 hours. Calm, senior triage for crashed servers, memory leaks, database deadlocks, and broken DNS.

CRITICAL INCIDENT BRIDGE ACTIVEJoin Emergency War Room
06PRINCIPAL ADVISORY

Technical Advisory & Architecture Review

A written second opinion from a principal engineer before committing to a costly rewrite or massive infrastructure spend.

Book Architectural Call
03 // THE ANTI-AGENCY MODEL

Why ambitious teams choose a direct engineering pod over traditional dev shops.

VERIFIED OPERATING PROTOCOL

100% Principal Execution · Zero Sales Middlemen · Clean Git Repo Delivery · Instant Incident Bridge

[01]

100% Principal Engineers

No junior interns learning on your production dime. The lead architect who evaluates your brief writes and reviews every single pull request.

Inspect our engineering standard
[02]

Zero SDRs & Direct Pipe

No sales reps or non-technical account coordinators. Direct shared Slack/Discord channel with your engineers with daily async Loom walkthroughs.

Review communication protocol
[03]

100% Intellectual Property Ownership

All code lands directly in your GitHub/GitLab repo from commit #1. Full intellectual property transfer, clean git history, and zero vendor lock-in.

See intellectual property guarantee
[04]

Fixed 2-Week Sprints

Predictable milestone delivery with transparent scopes. No open-ended hourly billing black holes that reward slow engineers for padding invoices.

How our sprints work
[05]

Production SLAs (< 2h)

When systems break, we don't submit a support ticket. An on-call senior systems engineer joins your incident war room within 1–2 hours.

Emergency SLA details
Talk to an expertSee how it works
04 // PROVEN IN PRODUCTION

Real systems. Zero downtime. Verifiable outcomes.

We don't talk in vague deliverables. Here is how we rescued fragile codebases, modernized legacy stacks, and engineered high-throughput platforms.

[01]AI & VIBE CODING RESCUE
Seed-Stage Fintech

Rescuing an AI-Built Financial Modeling Platform Before Investor Demos

CLIENT: FinVector Analytics
The Crisis: Cursor-generated MVP had Stripe secret keys leaking in client bundles, cross-tenant database access, and failing Vercel builds 14 days before investor demos.
The Architecture: Extracted secrets into Next.js Server Actions, configured strict PostgreSQL Row-Level Security (RLS) policies, and normalized the messy 60-file component hierarchy.
The Standard: Strict runtime Zod schema validation gates and 100% strict TypeScript build passes.
100%
Leaks Patched
9 Days
Rescue Turnaround
$1.4M
Seed Capital Raised
Read Full Technical Postmortem
production // finvector-analytics.app
Rescuing an AI-Built Financial Modeling Platform Before Investor Demos
[02]PLATFORM MODERNIZATION & SPEED
D2C Furniture Brand

WooCommerce Monolith to Headless Next.js & Sanity Edge Architecture

CLIENT: Lumina Living
The Crisis: Sluggish WordPress store with 42 plugins, 4.8s LCP, and frequent 504 timeouts during Black Friday promotional drops.
The Architecture: Decoupled front-end using Next.js on edge CDN with Sanity CMS content lake and serverless checkout cart endpoints.
The Standard: Automated 12,000 legacy 301 URL redirect map with zero 404 errors post-launch.
0.68s
Mobile LCP Speed
+38%
Mobile Checkout
99.99%
Uptime on Traffic Drops
Read Full Technical Postmortem
production // lumina-living.app
WooCommerce Monolith to Headless Next.js & Sanity Edge Architecture
[03]HIGH-CONCURRENCY WEB SYSTEMS
Regional Freight Operator

Real-Time Fleet Telemetry & Dispatch Platform Rebuild

CLIENT: FreightCore Logistics
The Crisis: 250+ vehicle dispatch tool suffered from frequent race conditions, 8s refresh cycles, and load double-booking.
The Architecture: Event-driven Next.js App Router with Redis Pub/Sub for sub-100ms GPS updates and optimistic UI mutations for low-bandwidth cellular connections.
The Standard: Zero downtime permissible during migration as dispatch operations run 24/7/365.
94%
Latency Reduction
0 min
Migration Downtime
4.2x
Faster Assignments
Read Full Technical Postmortem
production // freightcore-logistics.app
Real-Time Fleet Telemetry & Dispatch Platform Rebuild
Explore all 12 case studies in the library
JOINAFFIX ENGINEERING DESK
05 / TECHNICAL INTAKE · 30-SECOND BRIEF

Tell us what you need.
We’ll take it from there.

A few details are enough. Your brief goes directly to the engineers who would work on the system.

STEP 01 / SITUATION

What's going on?

Pick the closest match.

01 / 03
Active outage right now? Emergency triage is available immediately.
Emergency Desk →
SELECT ONE
DIRECT ENGINEER REVIEWNo sales qualification
< 4H EMERGENCY RESPONSECritical incidents
NDA BY DEFAULTConfidential by default
INTELLECTUAL PROPERTYYours from day one
Prefer email? hello@joinaffix.com
Book 15-min triage on Cal.com →● Average response < 4 hours