Top Technology Jobs & Startup Jobs in Sydney

Design, develop, and optimize high-performance Java backend systems. Contribute to architecture, implement core modules, troubleshoot production issues, perform code reviews, and improve scalability, availability, and reliability of distributed financial or blockchain systems.

Lead data analysis and BI for recommendation, feeds, and growth use cases; deliver analytics, reporting, and end-to-end solutions; prioritize stakeholder requests; partner cross-functionally to deliver high-impact use cases; implement LLM-based agents for analysis, chatbot interaction, and sentiment monitoring; and mentor junior analysts.

Design and implement complex backend logic for the Strategy Engine to deliver personalized, dynamic UI experiences. Collaborate with data analysts to define and evaluate strategies, and work with Product, DevOps, and QA to deliver robust solutions. Promote engineering best practices and perform code reviews to ensure quality and consistency.

Manage fiat deposit and withdrawal operations for high-value institutional clients, support onboarding and ongoing account management, coordinate escalations across internal teams and banking partners, drive process improvements and support rollout of fiat solutions.

Design, build, and maintain bank and card payment integrations and high-availability, high-concurrency payment processing modules (routing, clearing, reconciliation, settlement). Collaborate with product, risk, and compliance, participate in code reviews and system design, and optimize system performance and scalability.

Design, implement, and maintain large-scale infrastructure and configuration solutions. Automate CI/CD and operational workflows, manage deployments, enhance observability, troubleshoot production issues, recommend architectural improvements, and ensure system security.

Operate and scale Kubernetes (EKS) clusters, maintain cloud infrastructure across providers, build CI/CD pipelines (GitHub Actions, ArgoCD), automate provisioning with Terraform and Python, manage incidents and post-mortems, and collaborate with developers to ensure reliable, cost-efficient, and secure deployments.

Early-career QA role: develop and execute manual and automated tests, create test cases from business and technical designs, track defects to resolution, contribute to test automation and risk mitigation, and collaborate with the team to ensure timely delivery of high-quality products.

Develop, deploy, and maintain LLM pipelines and RAG QA/search systems; design and optimize prompts and multi-agent LLM architectures; operate multi‑GPU/cluster inference; build evaluation pipelines for model quality, bias, and hallucination; collaborate with product and CS teams to integrate conversational AI.

Lead end-to-end QA for backend platforms: investigate and reproduce issues, design and run exploratory/manual tests, build and maintain Python/Bash test automation, evaluate coverage gaps, and produce test plans, cases, reports, and summaries to ensure scalability, stability, and performance.