Sr. Software Engineer (AWS) - Backend

About Zeller

At Zeller, we’re champions for businesses of all sizes, and proud to be a fast-growing Australian scale-up taking on the ambitious goal of reimagining business banking and payments.

We believe in a level playing field, where all businesses benefit from access to smarter payments and financial services solutions that accelerate their cash flow, help them get paid faster, and give them a better understanding of their finances. So we’re hard at work building the tools to make it happen.

Zeller is growing fast, backed by leading VCs, and brings together a global team of passionate payment and tech industry professionals. With an exciting roadmap of innovative new products under development, we are building a high performing team to take on the outdated banking solutions. If you are passionate about innovation, thrive in fast-paced environments, embrace a challenge, hate bureaucracy, and can’t think of anything more exciting than disrupting the status-quo, then read on to learn more.

Role , Responsibilities and experiences:

• Analytical and be able to work with fuzzy requirements
• Methodologically translate discussions with stakeholders, documents, own researchfindings into technical designs and implementation stepsPrior
• Experience in handling a team of software engineers.Build to last and go production mindset versus build as proof-of-concept
• Strong background in softwareengineering and design patterns Experience in microservices and serverless architecture
• Knowledge in architecture patterns such as; CQRS, event-sourcing Design, develop, and deploy microservices and serverless applications using Node.js, TypeScript, and AWSUnit tests using Jest -, along with Supertest and Postman as supporting tools.
• Experience with NestJs Good knowledge in multi-threaded and socket programming Instinctive desire to maintain code quality,tidiness and zero technical debtStrong understanding of testing practices (TDD/BDD), with tools like Jest, Supertest, and PostmanGood with API and its design/protocol e.g. Restful, Websocket, SOAP
• Good understanding of Request/Response vs Async protocol Familiarity with production-grade monitoring, logging, and alerting
• Can work with various databases to match query and storage requirements e.g.DynamoDB,SQL, DocumentDB
• Build and maintain scalable REST APIs integrated with DynamoDB, S3, SNS/SQS, Step Functions, and Lambda
• Experience in cloud native architecture Understanding of data lake and data warehousing Knowledge in secured coding e.g. OWASP, XSS, CORS Experience in authentication standards and platforms e.g. JWT, OAuth, IdentityFederation
• Experience in AWS Cloud environment

AWS Serverless architecture

Microservices

Blue Green Deployments

Own CI/CD processes using CodePipeline,

CodeBuild, and CodeDeployInfrastructure As a Code (IAC): Terraform, Cloudformation

AWS Devops SNS, SQS, EventBridge, Step Functions ElastiCache Loading Balancing, Route53, CloudFront, ECS,ECR, Auto-Scaling S3, RDS,

DynamoDB,DocumentDB CodePipeline, CodeBuild, CodeDeploy

Improve observability using CloudWatch, X-Ray, and other monitoring tools

• Proven track record in developing and maintaining mission-critical high-load productionsystems with SLA 99.999%
• Proven track record in supporting rapid and agile product deployments to different Contribute to and evolve our technical architecture and engineering processes
• Participate in system design and architecture reviewsenvironments - dev, test, stress-testing, staging/production.

Attributes:

• Loves challenging the status-quo
• Ability to work autonomously yet collaboratively
• Prepared to be bold yet consistent with your engineering principles
• Logical, ethnical, mature and responsible
• Fast learner, humble and loves to share knowledge
• Calm and exercises positive level of stress in exceptional circumstances such as;production issues, timeline requirements

Qualifications and experience

• Minimum of a Bachelor degree in software engineering (or related)
• 5+ years of working experience in a technical hands on software engineering role
• Demonstrable experiences in developing mission-critical systems

Bonus Points

• Experience in fintech.AWS Certified Solutions Architect (Associate or Professional)
• Experience in working within a high-growth environment
• Experience in other programming languages
• Experience in payments
• Exposure to Domain-Driven Design (DDD)Experience with PCI compliant environments (PCI-DSS, etc)