Full-Stack Engineer

1 week ago

Sydney, New South Wales, Australia Intrinzic Full time

This range is provided by Intrinzic. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.
Base pay range A$110.00/hr - A$140.00/hr
Direct message the job poster from Intrinzic
Co-Founder & Director at Intrinzic | DevOps / Cloud / SRE $900-$1100/day (incl. super) + GST
Greenfield Trading Platform Build
Intrinzic are proud to partner exclusively with an exciting tech start-up in Sydney CBD, who are building out a trading platform from scratch. The company is backed with a wealth of experience in this sector and are looking for a Full-Stack Engineer on a 6-month contract, to compliment their Engineering Team that has quickly grown to 15.
About The Role
We are looking for a Full-Stack Engineer who understands the reasoning behind frameworks, not just how to use them. You will work across both the front-end and backend of the platform, building scalable, secure, and performant systems that power real-time financial applications.
You have solid experience in back-end development paired with strong front-end skills. You enjoy tackling complex product challenges and are confident shaping both architecture and user experience from the ground up.
In this role, you'll work across our entire product suite—including payments, registration, trading, and internal tools—taking full ownership from system design through to delivery.
Build Tools: Vite, Webpack
Back-End: (Express or similar), REST APIs, GraphQL
Testing: Playwright, Jest
Infrastructure: AWS (Lambda, API Gateway, CodeBuild)
Key Responsibilities
Full-Stack Development: design, develop, and maintain scalable apps across front and back end
API Development - craft and optimize secure REST/GraphQL APIs and integrate with third-party services
Database Design - implement and fine-tune relational and NoSQL schemas for scale and performance
Front-End Development - build responsive, high-performance UIs for financial apps and tools
Tech Selection - recommend and implement technologies across the stack with scalability, security, and UX in mind
Collaborate & Lead - work cross-functionally, contribute to agile processes, and drive projects end-to-end
Core Projects
Payments Gateway: secure APIs + React front-end for multi-vendor payments and

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