Senior Software Engineer

• Maintain and expand our serverless card payment infrastructure built with TypeScript, Node.js, and AWS (Lambda, API Gateway, DynamoDB)
• Ensure continued PCI DSS compliance
• Work with others to fix bugs, implement minimal new features, trace errors, and ensure security patches are applied in production and pre-production environments
• Support a clean and well-documented strategy for all dependent services and infrastructure
• Collaborate in daily scrum ceremonies, working closely with engineering, security, and third-party vendors
• Apply TDD/BDD methodologies, maintaining high code quality and resilience

• Strong hands-on experience with TypeScript and Node.js
• Proficiency with AWS services in a serverless context, especially CloudFront, API Gateway, Lambda, DynamoDB and CloudWatch
• Commercial experience with Infrastructure-as-Code tools such as Terraform, SST, CDK or CloudFormation
• Strong understanding of API development, RESTful design, and secure authentication
• Demonstrated knowledge of API security and OWASP Top 10 vulnerabilities
• Experience with Docker, Linux, Git, and container-based environments
• Hands-on development experience with PCI DSS, payment systems, or other regulated environments is essential
• Excellent communicator with a self-starter attitude and comfort working autonomously
• Demonstrable expertise and understanding of API development/design and experience interfacing with disparate systems
• Applicable understanding of software security, common exploits and secure development practices, including the OWASP Top 10
• Proven and demonstrable understanding of testing methodologies and frameworks
• Commercial experience with AWS and IaC (Terraform/CDK/CloudFormation)
• Commercial experience with Linux, Docker, Docker Compose, Git and DynamoDB

Frontend familiarity is helpful (e.g. React)