Aquarel logo
aquarel.io
Book Free Triage Call
RESCUE CASE STUDY • Inherited B2B & Founder Web Applications (3-Year Outsourcing Rescue Pedigree) React & Next.js • TypeScript & Node.js • PostgreSQL & REST APIs • Auth & Payment Security • Staging & CI/CD

Inherited Client Web App Stabilization & Production Launch Without a Rewrite

Drawing on three years of hands-on software outsourcing and agency rescue engineering, Dositej Grbović repeatedly stepped into fragile, undocumented client web applications abandoned by prior developers—isolating P0 authentication, database, and payment defects, establishing staging and CI/CD pipelines, and shipping production launches without forcing costly from-scratch rewrites.

80%+
Existing application code preserved on typical inherited rescues
1–2 Weeks
Time to isolate and resolve P0 launch blockers after audit
$30k–$60k
Typical agency rewrite cost saved per rescued application
4-Quadrant Engineering Diagnostic Grid
01 / BUSINESS SYMPTOM & RISK

Founders arrived with 80%-finished web applications left in a broken state by previous contractors or rapid AI prototyping—suffering from unguarded API endpoints, broken login flows, data corruption bugs, and zero deployment automation.

02 / ROOT TECHNICAL DIAGNOSIS

Lack of environment separation (editing live production directly), missing database constraints and row-level authorization checks, coupled monolithic components, and undocumented third-party integrations.

03 / SURGICAL ENGINEERING FIX

Executed rapid 48-hour codebase audits to map P0 risks, provisioned isolated staging environments, locked down authentication and API authorization, and refactored only the failing 20% of modules.

04 / MEASURABLE OUTCOME

Transitioned stalled, anxiety-inducing codebases into stable, revenue-generating production applications in 1–2 week sprints while preserving the founder's existing investment.

Book Free 20-Min Triage Call for This Stack → Inspect Sample 48h Audit Report View Raw .md Mirror →
✓ Talk to Dositej directly (no sales reps) ✓ Keep repo access private until we talk & sign an NDA ✓ Free 48h Initial Codebase Audit ($0, zero obligation) ✓ Rescues from $1,000
Engineering Deep-Dive & Architecture Walkthrough

Saving the 80% That Works Instead of Selling a $50,000 Rewrite

Long before AI coding assistants existed, non-technical founders were getting stuck at the 80% completion wall with inherited contractor codebases. Across three years of dedicated software outsourcing and agency rescue engineering, I refined the exact diagnostic playbook Aquarel uses today: audit first, isolate the P0 security and data risks, and ship clean fixes in staging without throwing away working code.

1. Why Inherited & Vibe-Coded Apps Fail in the Exact Same Places

Whether an application was assembled by rotating freelance contractors or generated rapidly in Lovable, Bolt, Claude Code, or Cursor, the final 20% before launch consistently breaks down along three fault lines:

  • Bypassed Authorization & Exposed Credentials: To make UI demos work quickly, prior builders frequently disable database authorization rules, hardcode API keys in client bundles, or trust unvalidated client-side user IDs on mutation endpoints.
  • Spaghetti Coupling Between UI and Data Mutations: Core business logic, payment state transitions, and UI rendering live inside massive, untestable components where fixing one bug introduces two new regressions.
  • Zero Staging or Deployment Safety: Changes are pushed directly to production without environment separation, database migration tracking, or rollback safety.

2. The Surgical 3-Step Stabilization Playbook

Instead of quoting $30,000–$80,000 to rebuild the entire application from scratch, every inherited rescue follows a strict, low-risk sequence:

  1. 48-Hour Forensic Triage & Risk Scorecard: Map the repository’s true posture into RED (P0 Must Fix Now), YELLOW (P1 Fix Soon), and GREEN (Healthy — Keep As-Is) subsystems.
  2. Staging Isolation & P0 Lockdown: Provision a reproducible staging environment, rotate exposed secrets, enforce server-side/RLS authorization, and stabilize authentication and billing flows in reviewable Pull Requests.
  3. Vibe-Safe Handover: Document the architecture and install CLAUDE.md, AGENTS.md, and .cursorrules guardrails so the founder retains 100% IP ownership and can continue building with confidence.
Matching Rescue Services & Deliverable Preview

Hire Aquarel for a Surgical Rescue Sprint in This Domain

PILLAR 01 • FLAGSHIP
Vibe-Code App Rescue & Stabilization

Take your 80%-done AI app across the production finish line with secure auth, Stripe billing, and Vibe-Safe guardrails.

/services/vibe-code-app-rescue →
STACK SPOKE 01
Lovable + Supabase Rescue (RLS, Auth & Edge Functions)

Lock down wide-open Supabase Row-Level Security (RLS), fix magic-link/OAuth loops, and harden Edge Functions.

/services/lovable-supabase-rescue →
STACK SPOKE 03
Claude Code, Cursor & Replit Rescue (Vibe-Safe Handover)

Untangle 3,000-line AI god-components, stop prompt regression loops, and install CLAUDE.md, AGENTS.md & .cursorrules guardrails.

/services/claude-cursor-replit-rescue →
DELIVERABLE PREVIEW • $0 48H AUDIT
Interactive Sample 48-Hour Codebase Audit Report ("PulseFlow AI")

Inspect the exact Red/Yellow/Green risk scorecard, Loom walkthrough chapters, and fixed-price sprint quote you receive before spending a dollar.

/sample-audit →
4-Point Engineer-Grade Trust Stack

Why Non-Technical Founders Hand Over Production Keys With Zero Anxiety

01 / IDENTITY & NDA FIRST

Talk First Before Repo Access

Meet Dositej live on a 20-min Triage Call, verify credentials, and sign an NDA before granting repo access.

02 / ZERO COWBOY EDITS

"Do No Harm" Staging & PRs

No editing live production files. Every fix ships in isolated PRs tested in staging with rollback safety.

03 / PLAIN-ENGLISH CLARITY

10–15 Min Loom Walkthroughs

Every audit and sprint includes a plain-English video walkthrough of the root cause and the fix—zero jargon.

04 / KEEP PROMPTING SAFELY

100% IP & Vibe-Safe Handover

You own all code, keys, and custom CLAUDE.md & AGENTS.md guardrails so future prompts never break production.

Direct Answers for Founders & Operators

Frequently Asked Questions

How is rescuing an AI/Vibe-Coded App similar to rescuing an inherited contractor codebase? +

Both suffer from the exact same structural failure modes: inconsistent patterns across files, bypassed security checks to make demos work quickly, and zero architectural guardrails. Our 48-hour Codebase Audit pinpoints these traps immediately.

When would you ever recommend a rewrite instead of a rescue sprint? +

Only if the core data model and 90% of the business logic are fundamentally wrong for the product's actual use case. In practice, over 90% of stalled apps only need surgical stabilization of the broken 20%.

What if the previous developer or AI tool left zero documentation? +

Zero documentation is our default starting assumption. During the complimentary 48-Hour Initial Codebase Audit, we map the data flow, environment variables, and P0 security risks from the code itself—and leave behind clean README and CLAUDE.md / AGENTS.md documentation at handover.

Ready to Find Out What's Actually Broken—For Free?

Book a 20-minute Triage Call or send your broken app asynchronously. We talk first, sign a mutual NDA, and if we're a fit, I deliver your 48-hour Codebase Audit and Loom walkthrough at zero cost.

Book Free 20-Min Triage Call → Send Broken App Async (1-Day Reply)
✓ Talk to Dositej directly (no sales reps) ✓ Keep repo access private until we talk & sign an NDA ✓ Free 48h Initial Codebase Audit ($0, zero obligation) ✓ Rescues from $1,000