Posted on: 27/09/2025
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an exciting roadmap of innovative new products under development, we are building a high performing team to take on the outdated banking solutions.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 research findings into technical designs and implementation steps Prior.
- Experience in handling a team of software engineers.
- Build to last and go production mindset versus build as proof-of-concept.
- Strong background in software engineering 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 AWS
- Unit 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 debt
- Strong understanding of testing practices (TDD/BDD), with tools like Jest, Supertest, and Postman
- Good with API and its design/protocol i.e. 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 i.e. 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 i.e. OWASP, XSS, CORS Experience in authentication standards and platforms i.e. 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, Code Deploy.
- Improve observability using CloudWatch, X-Ray, and other monitoring tools.
- Proven track record in developing and maintaining mission-critical high-load production systems 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 reviews environments 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)
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Posted in
Backend Development
Functional Area
Backend Development
Job Code
1552775
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