Senior Backend Engineer (Typescript, AWS, GraphQL)

We are seeking a Senior API Engineer to help develop and operate an omnichannel API platform supporting a large Australian retailer. The platform enables consistent digital experiences across web, mobile, and in-store channels. This is a hands-on engineering role focused on building reliable, scalable APIs using Node.js, TypeScript, GraphQL, REST, and AWS. You will contribute to technical design, application development, infrastructure-as-code, production support, and the ongoing improvement of the platform. Key responsibilities Design, develop, test, and maintain APIs within a GraphQL-based omnichannel platform Build reliable backend services using Node.js and TypeScript Design and evolve GraphQL schemas while following established schema governance and API standards Develop and maintain AWS infrastructure using AWS CDK and TypeScript Work with AWS services including ECS, Fargate, VPC, Application Load Balancer, CloudWatch, and related platform services Contribute to technical design discussions and provide practical input into solution approaches Diagnose and resolve production issues across application and infrastructure layers Improve API performance, scalability, reliability, observability, and security Write automated tests and participate in code reviews Support continuous integration, deployment, and operational practices Collaborate with engineers, architects, product teams, and delivery teams across Vietnam and Australia Share technical knowledge and support less-experienced engineers when required Strong experience developing backend services or API platforms Advanced proficiency in Node.js and TypeScript Strong understanding of asynchronous programming, error handling, type safety, and application performance Practical experience designing and developing GraphQL and/or REST APIs Good understanding of GraphQL schema design, resolvers, federation, versioning, caching, and performance optimisation Experience building and maintaining cloud infrastructure using AWS CDK and TypeScript Experience with AWS services such as ECS, Fargate, VPC, Application Load Balancer, CloudWatch, IAM, and Secrets Manager Strong understanding of backend engineering and distributed system fundamentals Experience diagnosing application and infrastructure issues in production environments Good understanding of automated testing, code quality, CI/CD, observability, and secure engineering practices Ability to work independently on complex engineering tasks Strong written and verbal communication skills Ability to collaborate effectively with distributed and cross-functional teams Nice to have Experience delivering eCommerce or omnichannel retail platforms Experience with high-traffic or highly integrated enterprise systems Experience with performance testing and API optimisation Exposure to modern DevOps and site reliability engineering practices Experience working with teams distributed across multiple countries and time zones About Mindera At Mindera, we craft software with people we love. We are 1000+ techies working from anywhere in the world who love to implement the best engineering practices and use the latest tech stack to deliver web and mobile applications for over 100 well-known international clients since we started. We partner with our clients to understand their products and deliver high-performance, resilient and scalable software systems that create an impact on their users and businesses across the world. You get to work with a bunch of great people, and the whole team owns the project together. Our culture reflects our lean and self-organisation attitude. We encourage our colleagues to take risks, make decisions, work in a collaborative way and talk to everyone to enhance communication. We are proud of our work, and we love to learn all and everything while navigating through an Agile and collaborative environment. Check out our Blog and our Handbook ! With offices located across Portugal , United Kingdom , United States , India , Romania , Brazil, Morocco , Spain , Australia, Vietnam join us as we expand and influence the future of software engineering worldwide.