holdfast

APP RESCUE & CARE FOR SMALL SAAS AND BUSINESS APPS

Software that holds under pressure.

A senior engineer with 12+ years on production systems. I audit apps nobody else understands any more, fix what's dangerous, and keep them patched, backed up and running every month.

Book a 15-minute call See pricing
audit-summary.txt
CRITICAL service key exposed in front-end bundle
CRITICAL users can read other users' records
HIGH no tested database restore
HIGH payment webhook not verified
MEDIUM 3 copies of the same billing logic
VERDICT fix, don't rebuild (~32 hrs)
Example output. Every audit is written for your app.

Who this is for

Buying or selling a small SaaS

Buyers discount for technical risk they can't see. Get a clear risk report and a handover pack before you list, or a safe pair of hands after you close.

Built it with AI, now it's breaking

Lovable, Bolt or Cursor got you to paying users. Now fixes break other things. Find out what's actually wrong, and whether to fix or rebuild.

Your developer has moved on

A custom system runs part of your business and nobody knows how it works. Keep it secure and running without hiring a full-time engineer.

How it works

  1. 01

    Audit

    Read-only review of code, hosting, data and payments. You get a plain-English report with every risk ranked, and a fix-or-rebuild call.

  2. 02

    Fix and care

    The dangerous items get fixed first. Then a monthly retainer keeps dependencies patched, backups checked and small bugs handled.

  3. 03

    Build when ready

    When the foundations are solid and you want new features, step up to part-time engineering on your roadmap.

Pricing

Rescue audit

£950 fixed

  • Code, hosting, data and payments review
  • Risks ranked by severity
  • Fix-or-rebuild recommendation
  • 1-hour walkthrough call

Delivered in about a week

Caretaker

£750 / month

  • Security and dependency patching
  • Backup checks and uptime monitoring
  • Up to 4 hours of fixes a month
  • Monthly health note

3-month minimum, then monthly

Fractional engineering

£2,500 / month

  • 20 to 30 hours a month
  • Roadmap features and architecture
  • Everything in Caretaker

Limited availability

All work is async with next-business-day responses. No on-call or same-day support. Prices exclude VAT where applicable.

About

I'm Rob, a software engineer with 12+ years building and modernising production systems across investment banking, fintech, government and media. Most of that work has been taking over complex systems someone else built and making them reliable.

Based in Bedfordshire, working with clients across the UK.

Common questions

Which tech stacks do you cover?

JavaScript and TypeScript (React, Next.js, Node), Supabase and Firebase, Postgres and MySQL, Python, and the JVM (Java, Scala, Kotlin), hosted on Vercel, Netlify, AWS or GCP.

Will you change anything during the audit?

No. Audits are read-only. Fixes start only after you've seen the report and agreed the scope.

Who owns the code?

You do. All code and documents written for you are yours once paid.

Not sure what state your app is in?

Book a free 15-minute call. Tell me what's breaking and I'll tell you whether an audit is worth it.

Book a call