Sr. Software Engineer​/AWS - Backend

Position: 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an exciting roadmap of innovative new products under development, we are building a high performing team to take on the outdated banking solutions.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 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, Type Script, and AWSUnit tests using Jest -, along with Supertest and Postman as supporting tools.

Experience with Nest Js 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 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. Dynamo

DB ,SQL, Document DB
Build and maintain scalable REST APIs integrated with Dynamo

DB , 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, Identity Federation
Experience in AWS Cloud environment
AWS Serverless architecture
Microservices
Blue Green Deployments
Own CI/CD processes using Code Pipeline,
Code Build, and Code Deploy Infrastructure As a Code (IAC):
Terraform, Cloud formation
AWS Devops SNS, SQS, Event Bridge, Step Functions Elasti Cache Loading Balancing, Route
53, Cloud Front, ECS,ECR, Auto-Scaling S3, RDS,
Dynamo

DB,Document

DB Code Pipeline, Code Build, Code Deploy
Improve observability using Cloud Watch, X-Ray, and other monitoring tools

Proven track record in developing and maintaining mission-critical high-load production systems with SLA ++.+++%
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)