Russian hacker, Vladimir Leonidovitch Levin, attempted the biggest bank heist the world had ever seen via dial-up internet in 1994, Zia Hayat, Callsign CEO and founder, was hooked - armchair fraud became a real possibility. From this moment, Zia knew he wanted to play a part in stopping the bad guys and securing the internet for all. Founded In 2012, Callsign's mission has been to make Digital Identity simple and secure for everyone and everything. In that time, we've grown to over 200 employees, opened offices in Singapore and Abu Dhabi, been recognised as a WEF Global Innovator and our technology is being used by many of the world's leading financial institutions to keep millions of consumers safe.

But we aren't stopping here. The identity revolution has only just begun, and we are looking to hire the brightest and inquisitive minds to help us make every web, mobile and physical Interaction seamless and secure. If this sounds like you, lets chat.
Callsign is rapidly expanding its technology platform and is looking for engineers with curiosity to join their JavaScript team, responsible for building state-of-the-art identity and protection systems.

What The Job Involves:

• Lead technical contribution towards the design, prototype, development and test phases for features across products
• Research new browser APIs, features and changes within the JavaScript space to identify new and potential innovations
• Drive performance and optimisation of products for natural userflows

• Understanding and experience designing for scalability, resiliency and performance as well as observability (logging, metrics)
• Understanding of agile practices
• A commitment to learning, discovering new technology and sharing within the team
• Experience in performance optimisation within browsers
• In depth knowledge of browser APIs, features and functionality including cross-browser compatibility and testing
• Mentor other developers with the team and share knowledge ensuring standards are consistently upheld
• Work with members from other cross-functional teams on delivering on product features from inception to production
• Be an active member in both JS and wider engineering communities
• Collaborate and estimation of functional and technical stories, help with product documentation, backlog grooming and prioritisation

Requirements

• At least 5 years of commercial experience using JavaScript
• In depth knowledge of JavaScript from ES3 onwards, and its fundamental concepts
• Experience developing headless products for browsers
• Experience or knowledge within security, authentication or other related fields
• Experience in creating secure products that are run within insecure environments, for example, client browsers.
• Knowledge of web authentication standards such as WebAuthn or FIDO
• Experience using/writing CI tools
• Any experience of the following:
• Crypto API
• WebGL
• Credential Management API

Benefits

• Health Insurance
• Visa costs including 1 month paid hotel stay on arrival
• Annual Airfare Allowance for the home country
• 3 months full pay maternity leaves & 2 weeks full pay paternity leaves
• 25 days of annual leave + Callsign Bank Holiday (not included in holiday allowance)
• Competitive Salary
• Gratuity as EOSB