Principal Software Engineer, Backend

Date: 05-Sep-2022


Singapore, Singapore

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Singtel Group

At Singtel, we’re working on projects that push the boundaries of digital, realising our vision and purpose to Empower Every Generation. We have a dynamic and diverse team, with a passion for innovation, and talent to deliver cutting-edge digital solutions and immersive customer experience.


In Group IT, we create great technology that can change the future, and we’re looking for people to be part of our digital and 5G journey. If you like to work in a dynamic, leading communications technology group to deliver innovations and excellence across the region, come join our digital, software engineering, data and cyber security teams!



As a Principal Software Engineer in the Backend Chapter, you will be responsible for building applications that run in the cloud or in the data centre to support both web and mobile apps.  Using engineering best practices, the applications you build will be the highest quality and confirm to development standards.  The applications you right will be primarily written in the Java programming language with specialized services written in other languages such as JavaScript or Golang, Python, other.


You will understand service implementation approaches that support consistent and eventually-consistent data models using synchronous and asynchronous techniques and understand the fundamentals of resource optimization and concurrency. You will understand how and contribute to the design and building highly scalable applications running in both the cloud and on-premise data centres and the principles of micro-services. You will mentor and guide the software engineering teams to the best practices and build an awesome engineering culture in a diverse engineering team.


Key Responsibilities

  • Development of High Performance Java Service API and Business Systems
  • Using SpringBoot to build microsservices in Java
  • Writing deployment pipelines to deploy Java microservices in Kubernetes
  • Working with AWS Services to optimize your Java applications (SQS, SNS, SES, Lambda, S3, DynamoDB, RDS, and more)
  • Contributing to the Chapter java library and framework development
  • Write integration tests for API endpoints
  • Focus on Technical leadership
  • Ensure best practices are followed in the Chapter
  • Provides mentoring and guidance


The ideal candidate should possess:

  • Bachelor’s degree in Computer Science or Computer Engineering

  • Min. 15 years of software engineering experience in Java and currently in a leadership position

  • Technical stack: Java 8 / Java lambda, SpringBoot, RESTFul Services, JSON API, HTTP Protocols / CORS / CSRF, Cache Control (Redis), Microservice Architectures, Containerization, Maven, Junit, Mockito, Contract testing​​​​​, Caching Systems (Hazelcast, Redis, Aerospike), RabbitMQ / Kafka / SQS, NoSQL Databases, Lambda (Serverless) Concepts

  • Deep understanding of Algorithmic Design

  • Deep understanding of Software Development Lifecycles

  • Can work in diverse large teams

  • Ability to communicate effectively



We are committed to a safe and healthy environment for our employees & customers and will require all prospective employees to be fully vaccinated.



Apply now, and ignite our digital future together.

About Singtel

Headquartered in Singapore, Singtel has 140 years of operating experience and played a pivotal role in the country’s development as a major communications hub. Optus, our subsidiary in Australia, is a leader in integrated telecommunications, constantly raising the bar in innovative products and services.

We are also strategically invested in leading companies in Asia and Africa, including Bharti Airtel (India, South Asia and Africa), Telkomsel (Indonesia), Globe Telecom (the Philippines) and Advanced Info Service (Thailand). We work closely with our associates, leveraging our scale in networks, customer reach and extensive operational experience to lead and shape the communications industry.

Together, the Group serves over 700 million mobile customers around world. Singtel is one of the largest listed Singapore companies on the Singapore Exchange by market capitalisation.

The Group has a vast network of offices throughout Asia Pacific, Europe and the USA, and employs more than 23,000 staff worldwide.