Senior Software Engineer

Senior Software Engineer (Node.js/Typescript + AWS) - Core Banking Services Join to apply for the Senior Software Engineer (Node.js/Typescript + AWS) - Core Banking Services role at Greenfix Property Care . Overview 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new products under development, we are building a supportive and high‑performing team to inspire change in the outdated banking solutions.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. The Role We’re seeking an exceptional Senior Software Engineer with deep expertise in event‑driven architectures and cloud‑native development. This key position offers a defined pathway to technical leadership for candidates who demonstrate architectural vision and team leadership capabilities. The ideal candidate will drive technical excellence while mentoring team members and influencing our engineering practices. Responsibilities Architect, design, and implement enterprise‑grade, scalable software solutions using TypeScript and modern architecture patterns. Spearhead implementation of complex event‑driven systems following Event‑Sourcing and CQRS patterns. Lead development of cloud‑native applications on AWS following clean architecture principles. Drive technical decision‑making and solution design within cross‑functional teams. Establish engineering best practices, coding standards, and architectural guidelines. Provide technical mentorship to junior and mid‑level engineers. Conduct thorough code reviews and ensure quality through rigorous testing methodologies. Participate in technical leadership discussions and contribute to strategic technology roadmaps. Implement and maintain DevOps practices and infrastructure as code deployments. Qualifications Bachelor’s degree in Computer Science, Engineering, or related field (Master’s degree preferred). 5+ years of professional software development experience in enterprise environments. Demonstrated mastery of TypeScript and JavaScript with advanced knowledge of object‑oriented programming principles (Java or C# expertise is valued). Proven track record implementing Event‑Sourcing and CQRS architectural patterns in production environments. Extensive experience with event streaming technologies such as AWS Event‑Bridge or Kafka. Advanced proficiency in unit testing and integration testing using frameworks like Jest, with commitment to test‑driven development. Expert understanding of clean architecture, SOLID principles, and enterprise design patterns. Comprehensive experience with AWS cloud platform, particularly DynamoDB, SQS, Event‑Bridge, and DocumentDB. Demonstrated proficiency with DevOps practices including ECS, Fargate, AWS CI/CD pipelines, and Infrastructure as Code. Exceptional analytical thinking and problem‑solving capabilities. Outstanding communication skills with ability to explain complex technical concepts to diverse audiences. Preferred Skills Experience in banking and financial domain, particularly in core banking. Experience building high‑throughput, fault‑tolerant distributed systems. Advanced knowledge of serverless architecture patterns and AWS Lambda. Proficiency with containerization (Docker) and orchestration technologies. Experience with microservices architecture implementation, mono‑repo structures, and domain‑driven design. Strong background in performance optimization and scalability of event‑driven systems. Experience with financial compliance requirements and security best practices. Salary $120,000 - $150,000 a year How we work At Zeller, we thrive on the energy and fast pace that comes from in‑person collaboration and this role is based in our Melbourne CBD office with a general expectation of 4 days on‑site per week with an option of 1 day WFH. Benefits Competitive salary package, including equity; Balanced, progressive, and supportive work environment; Excellent parental leave and other leave entitlements; Fantastic office environment; Endless learning and development opportunities; Plenty of fun and social opportunities – we love to come together as a team; Ability to influence and shape the future of Zeller as our company scales both domestically and globally; Being part of one of Australia’s most exciting scale‑ups. Being diverse is valued and we strongly encourage people of all backgrounds and identities to apply to join our team. We want you to be able to show up at your best during the recruitment process. Please let us know if you require any accommodations during your interview process with us. #J-18808-Ljbffr