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 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new products under development, we are building a supportive and high performing team to inspire change in the outdated banking solutions. If you are passionate about innovation, thrive in dynamic environments, embrace new possibilities, hate bureaucracy, and can’t think of anything more exciting than evolving the status-quo, then read on to learn more.

Job Description

As a Senior Software Engineer, you will be responsible for architecting and developing cloud native, highlyavailable, robust and secure applications in the AWS environment. You will have experience in web,mobile, backend, API, database development and should have experience in leading a team of software engineers.With automation and maintenance being at the heart of our engineering principles, this position willhave the enviable opportunity to adopt and promote best practices, bleeding edge technologies andtrends. Not limited to a single product area or type, this role will work in a cross functional team withskill sets in full stack software engineering, devops, infrastructure, quality assurance to architect. Youwill collaborate with a cross-disciplinary team to own product software development, contribute andpromote standards and engineering best practices, support operational activities such as; processautomation, compliance activities, SLA upkeep requirements. You’ll be tasked with translating business or product requirements into technical designs, hands-onimplementation of the designs to see through its testing and deployment into various environmentssuch as; development, stress testing, integration testing, staging and production. You will enjoy thefun of development from scratch in some application components while adhering to the companyengineering standards, frameworks and best practices. You will also be a collaborative engineercapable of observing and contributing to existing works by other team members. Automation and maintenance is key, you will be excited to see through your contributions into production and maintaintheir longevity in the mission-critical environment.

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 Postman Good 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

Qualifications and experience

Minimum of a Bachelor degree in software engineering (or related)

Bonus Points

Experience in fintech.AWS Certified Solutions Architect (Associate or Professional)

Like the rest of our team, you will benefit from

Competitive remuneration

Fully remote role

Annual get together with the team

Being part of one of Australia’s most exciting scale-ups.

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