Our story
We exist to prove a point.
That building genuinely great software and treating customers like humans are not at odds with each other.
A long career in disrupting
the staffing industry.
Isimio has been growing for
In 2013, Amnon Kruvi was working as a software developer at a small staffing agency. Their scheduling system struggled to integrate with their Salesforce environment, so one day he offered to build one for them, right there on the platform they already trusted.
The director looked him in the eye and said: “Absolutely not.”
So he spent the weekend building it anyway. That product became Sirenum, a Salesforce-native workforce management platform that went on to serve staffing agencies around the world.
As the business scaled, a tension emerged: Amnon believed every customer deserved the support time they needed to get the most out of the product. The business felt that level of attention wasn't commercially viable.
It was an inevitable split, and an honest one. The question Amnon wanted to answer was whether being a genuine partner to customers, as much as a software vendor, could actually be the commercial model. Isimio is the attempt to find out.
In 2019, Isimio was released to carry a single idea: that the best way to build a long-lasting company is to make something your customers genuinely love, then treat them like partners, not revenue lines.
The codebase is original. The team is UK-based. The development is in-house. And since day one, we've stayed with customers until things actually work.
What we believe
The things that don't change
We answer to our customers, not investors
No venture capitalists, no board pushing for an exit, and no acquisition on the horizon. Our pricing decisions, roadmap, and support commitments are made with one question in mind: is this good for our customers?
Outcome-driven results
We don't close a project until the customer is genuinely happy. Not just 'contract complete'. Actually happy. Every team member is empowered to spend unbilled hours on customisation when a customer needs it.
Built in the UK, by people who care
We hire locally in the UK and don't outsource our development. The people building Isimio are the same people answering your support queries. They know the product because they made it.
Software that bends to you
Rigid tools force your team to change how it works to fit the software. We think that's backwards. Every part of Isimio is configurable to match how your business actually operates: screen layouts, compliance rules, automations, all of it.
Amnon Kruvi
Founder, Isimio
“When you need something new, it isn't a you problem. It's an us opportunity.”
Come and see it for yourself.
Book a 30-minute demo with a real person. We'll show you exactly how Isimio works for your team. No slides, no pitch deck.