Working at Callsign |

Callsign Overview

London, England
51 to 200 employees
Company - Private
Computer Hardware & Software
Unknown / Non-Applicable


Callsign changes the rules of identity. By using all of the thousands of data points available such as typing or swiping techniques, location, online habits, face recognition, devices, and yes even passwords, we can determine someone is who they say they are; we even know the ... Read more

Mission: To seamlessly power the identification of every web, mobile and physical interaction.

Callsign is a great British technology company. With roots firmly grounded in the Northwest of England, home of the industrial revolution, Callsign is driving the identity ... Read more

Callsign Reviews

  • "Great place, good people."

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Former Employee - Executive Assistant in London, England
    Former Employee - Executive Assistant in London, England
    Approves of CEO

    I worked at Callsign full-time (More than a year)


    Callsign is a comparatively young company, with an employee base sporting some exceptional talent in AI. The leadership team are working hard to move the company forward and grow it into something amazing and a leader in this very technical field.

    There have been some problems, which have been mentioned in other reviews, but in engineering particularly, the appointment of a strategically minded, forward thinking CTO has turned many of these issues around. His move to establishing a PMO function has led to a new way of working which has enabled the engineering team to foster a far more cohesive approach allowing the talented individuals within the team to shine and push things forward to the next level.

    Culturally, the company is a great place to work. It is very much a start up environment but if you're looking for a role in a company that's dynamic, fast moving and fluid then Callsign might well be the place for you


    Callsign has many of the issues you'd find in any start up but a lot of work has been done in moving things forward to enable the company to grow for the future.

    Advice to Management

    Keep up the great work guys, and thanks for letting me be part of the journey

See All 17 Reviews

Callsign Photos

Callsign photo of: Collaborative working environments
Callsign photo of: There's free fruit on offer, but it’s not to everyone’s taste!
Callsign photo of: Friendly working environment
Callsign photo of: Hone your skills at our monthly games night
Callsign photo of: Website photoshoot
Callsign photo of: Meet Ryan Gosling!
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Callsign Interviews



Getting an Interview

Getting an Interview




  1. Helpful (3)  

    Systems Administrator Interview

    Anonymous Interview Candidate in London, England
    No Offer
    Negative Experience
    Easy Interview


    I applied online. The process took 2 weeks. I interviewed at Callsign (London, England) in February 2020.


    Applied online, got an email stating that they wanted to setup a call to "discuss opportunity", that turned into telephone interview (good that I am always prepared) after which I have been invited for face to face panel interview (four people on the meeting invitation). Once arrived, managed office building security told me I have not been booked in had to wait for them to reach someone from Callsign, after three attempts finally they ware able to reach someone from Callsign reception, got in visitors system could not print the pass as it was Monday and something got switched off for weekend (printer connected as pass through - for more technical chaps out there) so had to enroll twice. Hiring manager dressed bit too casual for professional meeting picked me up 3 minutes late walked in to the meeting room to meet another casual dressed individual and learned that 50% of panel will not be joining as they are on holiday/another meeting. Very average interview. Two days later received an email stating that I was not successful, asked for feedback that never was send. I will let the reader to read between the lines.

    Interview Questions

See All 2 Interviews

Callsign Awards & Accolades

  • Disrupt 100, TÄLLT VENTURES, 2018
  • Disruptors to Watch, The Sunday Times - Fast Track 100, 2018

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