We’re looking for a Principal Software Engineer who thrives on solving complex problems, experimenting fast, and iterating with purpose. Someone fluent in our tech stack who can ship high-quality code in fast-paced environments — and who’s hungry to apply AI and modern engineering to real-world financial challenges.

You’ll help shape the technical direction for a world-first AI-powered finance platform that helps Australians maximize their savings.

Tech Stack: React, React Native (Front end) | C# .NET (Back end) | Cloud & AI frameworks (nice to have)

Responsibilities1. Core Development & Delivery

Write, test, and maintain production-quality code in C# .NET and/or React Native.
Prototype quickly and roll out features end-to-end across the stack.
Ensure systems are fast, secure, and scalable.
Test thoroughly and fix issues early across both backend and frontend.
Drive high standards for code quality, performance, and maintainability.

2. Technical Implementation

Turn product ideas and Figma designs into solid, production-ready architecture.
Lead code reviews and model engineering excellence for both C# and React Native.
Guide the team in AI adoption — from automating workflows to enhancing user experience.
Contribute to architectural discussions and improve tooling, performance, and developer experience.
Within 3-4 months, take ownership of backend services, designing APIs and scalable integrations.

3. Technical Leadership & Mentorship

Act as a technical mentor and sounding board for engineers and leads.
Promote a culture of ownership, clarity, and innovation.
Collaborate daily with engineers, designers, and product managers.
Support less-experienced teammates and help them level up technically.
Model strong communication and problem-solving under ambiguity.

Qualifications

Required:

Bachelor’s degree in IT, Computer Science, or equivalent practical experience.
8+ years of software engineering experience, with ≥2 years as a Principal Engineer
Expert-level experience in C# .NET and/or React Native.
Proven record of solving complex technical challenges and leading system-level architecture.
Demonstrated AI adoption experience in product or engineering workflows.
Excellent problem-solving, debugging, and communication skills.
Strong English proficiency and experience working with global teams.
Based in South East Asia: Philippines, Vietnam, Thailand, or Indonesia (strong English needed)

Preferred:

Experience in banking, lending, or savings domains.
Background in startup or fast-scaling product environments.
Exposure to cloud infrastructure, CI/CD, or data-driven platforms.
Prior experience mentoring engineers or leading by technical influence.

What You’ll Get

Flexible Remote Work: 100% remote role, full-time, day-shift hours in SEA
Build a World-First Product: Your work will help reshape the way Australians manage their money
Work with World-Class Talent: Collaborate with brilliant fintech minds, AI experts, and ex-bank execs
Grow Fast and Go Far: This role will evolve as we scale — and you will too
High Impact, Small Team: Your ideas and work will directly shape our product and user experience

What it Feels Like to Work Here

You’ll be joining a team that:

Celebrates ideas, not titles
Moves fast, learns fast, and iterates even faster
Starts with AI in everything — not bolted on, but baked in
Works around limits using creativity and resourcefulness
Humbly welcomes feedback and quick to adapt

We’re building the kind of company we want to work for — one that challenges us, grows us, and leaves the world a better than we found it.

Why Join Open

Joining now means becoming part of the founding team: working alongside globally awarded leaders and seasoned fintech operators, with real autonomy to shape our product, culture, and growth. You’ll see your work in market quickly — not stuck in layers of approvals.

What makes this role compelling:

Founding role: shape the product, culture, and future of Open
Mission & Impact – help maximise financial wellbeing locally, while contributing to ending extreme poverty globally.
Team – collaborate with some of the best marketers and builders in the country.
Growth – career acceleration in a high-visibility startup.
Culture – caring, collaborative, and cutting-edge.
AI – build future-ready skills in an AI-first environment.
Credibility & Scale – strong brand, serious backing, and global potential.

Join us if you want to help shape the foundation of a next-generation fintech, where code, creativity, and AI come together to make finance fairer for everyone.

Apply for the role

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