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App Development Company

JayStack

Bespoke software, apps and SaaS products built for enterprises, SMEs, start-ups and the public sector

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About JayStack

JayStack is a bespoke software developer that designs and delivers custom applications for organisations of many sizes. Its material refers to the wider group behind it as One Beyond.

What JayStack does

  • Enterprise software: custom systems built with a dedicated team, from planning through delivery.
  • Product development and SaaS: cloud products for established businesses, including versions for licensing or resale.
  • Business applications for SMEs: web and mobile systems built on the group's Obelisk framework.
  • Apps for start-ups: rapid builds of SaaS products, with full code and IP ownership passing to the client.
  • Public sector software: work for government bodies, including a reference project for the medicines regulator MHRA.

Who it serves

Clients include SMEs, large enterprises, not-for-profits, government and funded start-ups. Case studies mention the holiday operator Haven and Smith & Nephew.

Key facts

  • Team: more than 350 software developers
  • Technology: Microsoft and JavaScript stacks
  • Public sector status: approved supplier to UK government through the Crown Commercial Service

Profile written by TrustList from the business's own published information, Oct 2026.

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