Software Engineer

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, let's chat.

Responsibilities

• Develop and maintain high-quality Java applications
• Design and implement RESTful APIs
• Work with relational databases such as MySQL, Oracle, and PostgreSQL, and ideally have experience with NoSQL databases
• Apply strong knowledge of object-oriented design and development best practices
• Estimate, prioritize, and execute tasks either by pair programming or independently
• Collaborate with Agile teams or startups to deliver high-quality software solutions
• Ensure code quality through Test Driven Development (TDD)

• 3+ years of commercial experience in Java
• Experience with relational databases (MySQL, Oracle, PostgreSQL) and ideally NoSQL databases
• Proven experience in developing and designing RESTful APIs
• Ability to choose the right technology for the task at hand
• Strong knowledge of object-oriented design and development best practices
• Ability to estimate, prioritize, and execute tasks in a high-pressure environment
• Excellent command of the English language
• BSc or MSc in Computer Science or a related degree from a top university
• Knowledge of Spring Frameworks, including Spring Security, Spring Boot, and Spring Data
• Proficiency in Test Driven Development (TDD)
• Experience working with Agile teams or startups

• Experience with Continuous Integration
• Experience with performant, highly transactional, service-oriented platforms
• Working knowledge of Docker, UNIX-based operating systems, and Microservices
• Familiarity with application security, cryptography, and security practices
• Experience with Kafka and other queue-based messaging systems

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