iqsoft

HR · USA · 2021

Rebuilt in 4 months, with zero downtime

A US HR company’s vendor withheld support and kept control of the platform its revenue depends on. We kept that platform running while rebuilding it from scratch.A US HR company’s platform, taken back from its vendor and rebuilt.

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Client
A US HR company
Sector
HR software · USA
Year
2021
Built
A new platform on AWS
The problem

Locked out of their own platform

The vendor stopped support and kept the AWS account. The code was incomplete, undocumented, and the keys were out of reach.

What we did

Rebuilt while it kept earning

Two jobs at once: keep the old platform alive, and build its replacement beside it.

  1. Locked out

  2. Kept it running

  3. Mapped the system

  4. Rebuilt from scratch

  5. Moved the data

  6. Switched over

The hard part

Rebuilding what nobody had documented

We had to work out how the system behaved from incomplete code, without the keys, while the original stayed live. There was no pausing the business to do it, and this was 2021, before AI coding tools existed.

The outcome

Back in control, and still earning

  • Rebuilt in 4 months, against about 18 for the original build
  • Delivered at a fraction of the original cost
  • Zero downtime at the switch-over
  • Ownership and control restored
  • Still live and earning revenue today
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