Summary
✨ AI‑Generated
Join a fast-growing financial technology organization as a Senior Software Engineer working across the full stack. You will build backend APIs and services with C#/.NET, create modern frontend experiences with React and TypeScript, own customer-facing features end-to-end, and contribute to architecture and engineering standards. Performance, reliability, security, conversion, and user experience are central to the role.
Highlights
End-to-end ownership of customer-facing features across backend and frontend systems, with strong emphasis on architecture, performance, reliability, and user experience. The role offers senior-level influence over engineering standards and high-performance digital products in financial technology.
Description
Spring is almost here.
Maybe it’s time to warm up your career too.
We’re working with a fast-growing fintech exchange operating across crypto and FX, building high-performance digital products used by customers across multiple markets.
They’re looking for a Senior Software Engineer who can genuinely work across the stack: strong C#/.NET engineering on the backend, coupled with hands-on React and TypeScript capability on the frontend.
This isn’t a backend role where you occasionally tweak a React component.
You’ll own customer-facing features end-to-end, contribute to architecture, improve performance and help shape the engineering standards behind a platform where speed, reliability, conversion and user experience genuinely matter.
What you’ll be doing
Build and maintain features across the customer-facing product including the website, onboarding, account creation, promotions and authentication journeysDevelop backend APIs and services using C# / .NETBuild modern frontend experiences using React.js and TypeScriptTake ownership of features from solution design through development, release and production supportContribute to architectural decisions and technical direction within the engineering squadWrite clean, readable, testable and maintainable codeSet a high standard through thoughtful code reviews and engineering best practiceImprove frontend performance, accessibility, SEO and overall customer experienceBuild and maintain multi-region and multi-language product experiencesWork with internationalisation and localisation including i18n, l10n and routing strategiesIdentify and resolve performance, reliability and quality issues before they become problemsWork closely with product, marketing and commercial teams on technology that directly influences customer acquisition and growth
What we’re looking for
You’re likely an experienced Senior Full Stack Engineer who is comfortable taking responsibility rather than waiting for perfectly defined tickets.
You’ll bring:
Strong commercial C# / .NET backend engineering experienceSolid hands-on React.js / TypeScript development capabilityExperience building and shipping customer-facing digital productsStrong API and service development experienceExperience with headless CMS and content-driven architecturesUnderstanding of scalable, maintainable frontend architectureExperience building multi-region / multi-lingual productsKnowledge of i18n and l10nStrong understanding of technical SEO including crawlability, structured data and Core Web VitalsGood engineering instincts around edge cases, failure modes, testing and maintainabilityAn eye for frontend quality, usability and conversion, not simply whether something technically worksA genuine ownership mentality: you care what happens after the code reaches productionConfidence working in an environment where priorities can move quicklyCommercial curiosity and an understanding that great engineering can directly drive revenue and customer growth
Nice to have
Any of the following would be a bonus:
Fintech, crypto, FX, trading or exchange experienceExperience with high-conversion consumer or e-commerce productsCustomer onboarding or identity verification flowsKYC experienceSSO and authentication technologies including OAuth 2.0, OIDC or SAMLStrong frontend performance knowledge including Lighthouse, accessibility and cross-device optimisation
Why this one?
This is a senior engineering role with real product ownership.
You’ll be working on technology sitting directly between the business and its customers rather than disappearing into an internal platform team three layers removed from the product.
You’ll have the opportunity to influence architecture, engineering quality and technical direction while still remaining hands-on.
The business is growing, the product is evolving quickly and there’s plenty left to build.
The offer
$180,000 base + superannuation + bonus
Package up to approximately $200,000
Sydney CBD
5 days per week onsite
Permanent position
High-impact customer-facing product
Fast-moving fintech environment
Strong senior engineering ownership
Please note: this position is Sydney-based and requires full Australian working rights.
Sponsorship is not available.
If you’re a strong C#/.NET + React engineer who enjoys building products people actually use, this could be a very good way to head into spring.
Sydney CBD | 5 days onsite
$180,000 base + super + bonus | Package up to circa $200K
Permanent | No sponsorship available
