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Salary
≈ $36k – $75k per year (Estimated)
Location
In office (Manchester)
Visa
Licensed UK visa sponsor
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 7, 2026. First seen by Alion on Oct 7, 2026.

Overview
Company
Impact
Profile match
Callsign is a London company founded in 2012 that authenticates users through behavioural biometrics and device intelligence. Its models recognise how a person types, swipes and holds a phone to spot impersonation without adding friction. The company works with banks and telecom operators fighting authorised push payment fraud.
Backed by Accel, SC Ventures

Our Customer Support Engineers are the first point of contact for clients needing support across Callsign's products and services. This role delivers efficient, high-quality support via phone, email and chat, using a ticketing system to manage and prioritise requests.

Working closely with internal 2nd and 3rd line technical teams, the Technical Support Engineer ensures timely issue resolution and clear customer communication. The role includes participation in an on-call rota and the ideal candidate will be proactive, have a strong passion for technology, teamwork and continuous learning.

The successful candidate will already need to hold the right to work in the UK.

This role will be based from our Manchester office and be part of our global Customer Support team.

What you'll do:

  • Serve as the first point of contact for clients seeking support on our products and services.
  • Engage with other teams to help prioritise and resolve issues.
  • Participate in an on-call rota to provide support outside of regular business hours.
  • Work a rotating shift pattern covering between the hours of 7:00 a.m. to 11:00 p.m.

Key Responsibilities

  • Handle various communication channels including phone, email, and chat.
  • Utilise a ticket/helpdesk system to manage and track support requests.
  • Prioritise and manage multiple demands, coordinating activities with technical 2nd and 3rd line teams.
  • Respond efficiently and communicate clearly to ensure customer satisfaction.
  • Support the incident management process and participate in the coordination, communication and resolution of incidents as required.

Requirements

Required Experience

  • Previous experience in a customer help desk or 1st line support role.
  • Ability to estimate and execute tasks in a timely manner.
  • Be able to work with initiative and multitask effectively.
  • Strong English written & verbal communication skills.
  • A passion for technology, with at least 12 months of experience in a support role.
  • A desire to learn and continuously improve.

OPTIONAL/DESIRABLE

  • An interest in fraud prevention is beneficial.
  • Experience with Jira (Atlassian) is a plus.
  • Experience working in a software company
  • ITIL or Service Desk related qualifications
  • Incident management
  • Be someone who seeks opportunities to improve how work gets done
  • Be confident taking responsibility for outcomes & mistakes

Benefits

Pension scheme with Scottish Widows

Private medical cover with Vitality

Life assurance (4x base salary)

Personal Learning & Development Budget

Cycle to Work Scheme

Company Family Leave

25 days annual leave plus Callsign Bank Holiday

Employee Volunteering Program

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