Cloud Infrastructure Developer
3 days ago
Changi Airport Group (CAG) is a leading air hub in Asia and one of the world's most awarded airports.
About UsWe are responsible for managing Singapore Changi Airport and Seletar Airport. Our key functions include airport operations, air hub development, retail and commercial activities, infrastructure development, and airport emergency services.
Job DescriptionWe are seeking an experienced Cloud Infrastructure Developer to join our team as a Serverless Software Engineer.
The successful candidate will be responsible for building, optimizing, and maintaining the microservices architecture of Changi App's middleware. The middleware connects to multiple enterprise and public APIs, ensuring seamless integration of services such as flight timings, Tenant Directory, Changi Pay, PlayPass event management, and more.
Key Responsibilities:
- Develop and maintain serverless architecture on AWS using Lambda, API Gateway, AppSync, SQS, SNS, and DynamoDB.
- Build and manage integrations with internal and external APIs (public and enterprise).
- Ensure the scalability, security, and performance of the middleware infrastructure.
- Refine system performance to meet the demands of millions of users.
- Collaborate with frontend engineers to ensure smooth data flow between backend services and app UI.
- Implement monitoring and alerting solutions to proactively manage system health.
- Troubleshoot and resolve middleware-related issues, ensuring system reliability and uptime.
- Collaborate with offshore teams for development and support tasks, ensuring timely delivery.
Estimated Salary: SGD 120,000 - 180,000 per annum.
Key Qualifications:
- Bachelor's degree in computer science, Engineering, or a related field.
- 2+ years of experience working with serverless architecture in AWS.
- Proficiency in Python with experience developing microservices and deploying them on serverless infrastructure.
- Experience with AWS services such as Lambda, API Gateway, SQS, SNS, DynamoDB, and AppSync.
- Familiarity with REST and GraphQL APIs.
- Familiarity with Terraform.
- Knowledge of automated test tools like Katalon is a plus.
- Experience with CI/CD pipelines for automated deployments (e.g., Jenkins, GitLab CI).
- Understanding of security best practices in cloud environments (e.g., AWS IAM, encryption).
Relevant Certifications:
- AWS Certified Developer – Associate (highly desired)
- AWS Certified Solutions Architect – Associate (preferred)
- AWS Certified Serverless Application Developer – Specialty (bonus)
Experience Requirements:
- Proven ability to manage API integrations in production systems and troubleshoot high-volume, high-availability platforms.
- Experience working in agile development environments with cross-functional teams.
- Previous experience working with distributed teams or offshore developers (similar time zone as Singapore) is highly desirable.
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