Senior Software Engineer, Global Treasury Payment Network — Airwallex, Singapore Full Time

If you are looking for senior software engineer roles in Singapore and you have serious experience building large-scale distributed systems — and you have been watching the fintech space wondering where you can actually ship code that moves real money across borders — this role at Airwallex in Singapore deserves a close look. Airwallex is hiring a Senior Software Engineer for their Global Treasury and Payment Network team, and the position sits right at the core of the company’s payment infrastructure. Below is everything we have been able to verify directly from the employer’s own careers page.

Quick Job Overview

About the Employer

Airwallex is a global fintech company that provides a unified payments and financial platform for businesses operating across borders. Founded in 2015 in Melbourne, Australia, the company is now dual-headquartered in Singapore and San Francisco, and has over 2,000 employees spread across 26 offices worldwide.

The company is valued at US$8 billion and counts T. Rowe Price, Visa, Mastercard, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital among its investors. That is not just name-dropping — it means the company has real financial backing from institutional players who have done their due diligence. Airwallex serves over 200,000 businesses globally, including names like Brex, Rippling, Navan, Qantas, and SHEIN.

In Singapore specifically, Airwallex holds a Major Payment Institution licence from the Monetary Authority of Singapore (MAS), which is not easy to get. For an engineer, this matters because it means the regulatory framework you will be working within is real and enforced — not some grey-area operation. The company has been growing its engineering presence in Singapore, and this role is part of that expansion.

Airwallex is also a certified Great Place to Work in multiple regions. Whether that translates to your day-to-day experience is something you would need to judge for yourself, but it is worth knowing that the company has put effort into its workplace culture rather than just talking about it.

What This Role Involves

The Global Treasury and Payment Network (GTPN) team is where this role sits, and it is not a backwater — it is Airwallex’s very first product and still the largest revenue driver across the entire company. The team operates at the intersection of traditional finance and modern payment infrastructure, which means you are dealing with real banking rails, real compliance requirements, and real transaction volumes.

More specifically, this role is positioned within a new Generative AI team inside GTPN. As the senior engineer, you will own the end-to-end development of AI-driven solutions that change how Airwallex provides support and automation for both internal teams and external customers. You will shape the underlying architecture and APIs for these systems.

Your day-to-day work will include building AI solutions that enable growth and drive internal efficiency, designing and implementing robust API and system architecture for new AI applications, and collaborating closely with a cross-functional team to bring these AI solutions to life. The company emphasises that this is a fast-paced, high-growth environment — so if you prefer slow-moving release cycles and months of planning before writing a single line of code, this is probably not the right fit.

GTPN is a global, cross-site engineering organisation with engineers in the US, Singapore, Hong Kong, and Shanghai. You will be collaborating with people across multiple time zones, which is standard for a company of this scale but worth knowing going in.

Required Skills and Qualifications

Airwallex has listed the following requirements on their official careers page. These are the employer’s stated criteria.

Minimum qualifications:

• 5+ years in backend software development, with a focus on AI. This is a hard requirement — they want someone who has been building production systems, not just experimenting with notebooks.
• Experience building internal or customer-facing products with LLMs. You need to have actually shipped something that uses large language models in a real product context.
• Expertise in building efficient, large-scale software systems. This is not a junior role — you should be comfortable with distributed systems, high concurrency, and high availability requirements.
• Skill in writing high-quality, maintainable code. They specifically mention this, which suggests they care about code quality rather than just velocity.
• Experience in design and development of large-scale distributed, high concurrency, high load, high availability systems. This is the core technical requirement — you need to have operated systems that handle serious traffic and cannot afford to go down.
• Excellent communication and mentoring abilities. As a senior engineer, you will be expected to guide others, not just write code in isolation.
• A relevant degree in Computer Science, Mathematics, or related fields. A bachelor’s degree meets the minimum, though an advanced degree may strengthen your application.

Preferred qualifications:

• Familiarity with MLOps practices and deployment pipelines for AI-driven products. If you have experience deploying ML models to production and maintaining them, that is a plus.
• Past experience in payments or FinTech. Not required, but given that this role sits in the payment network team, having domain knowledge will help you ramp up faster.

Salary, Benefits, and Relocation Support

Salary: Airwallex has stated the base salary range for this role as SGD 180,000 – SGD 245,000 per year, plus equity. This is explicitly confirmed by the employer on their careers page. The actual offer will depend on your experience and qualifications. The equity component is separate and has not been quantified in the listing — you should discuss the full compensation package, including equity details, directly with Airwallex during the interview process.

Benefits: Airwallex has not published a detailed benefits list for Singapore-based employees on this job page. Based on what the company generally offers across its offices, you can expect standard benefits for a fintech company of this size, but you should confirm specifics with the employer. The company mentions it promotes fair compensation practices in accordance with applicable law.

Relocation support: Not specified by the employer. If you are not currently based in Singapore, you should ask about relocation assistance directly during the hiring process.

Work Permit and Visa Note

Airwallex has not explicitly stated whether this role includes visa sponsorship or work permit support. The job listing does not mention the Employment Pass, S Pass, or any specific work authorisation pathway. If you are not a Singapore citizen, Permanent Resident, or hold an existing valid work pass, you should contact Airwallex’s recruitment team directly to ask whether they will sponsor an Employment Pass for this position before applying.

General context about working in Singapore: Singapore uses the Employment Pass (EP) system for foreign professionals. To qualify for an EP, you need to earn at least SGD 5,000 per month (higher for older applicants), and the role must fall under a points-based Complementarity Assessment Framework (COMPASS) that evaluates salary relative to local peers, candidate qualifications, firm diversity, and support for local workforce. Given that the stated salary range for this role starts at SGD 180,000 annually, the salary threshold would not be a barrier — but COMPASS involves other criteria beyond salary alone. This is general information about Singapore’s work pass system and is not a guarantee that Airwallex will sponsor a pass for this particular role.

Who This Role May Suit

This position is a strong fit if you are a backend engineer who has been working with AI and large language models in a production environment, and you want to apply those skills in fintech rather than in pure tech or advertising. The fact that GTPN is Airwallex’s largest revenue driver means your work will have direct business impact — this is not an internal tooling role where nobody notices what you build.

The Singapore location makes sense if you are already in Southeast Asia or looking to move there. Singapore is expensive, but the salary range reflects that — SGD 180K to 245K is competitive for a senior engineering role in the city, especially with equity on top. If you are coming from outside Singapore, the visa question needs to be addressed with Airwallex directly. Do not assume sponsorship is available just because the company is hiring internationally.

If you have five or more years of backend experience, have shipped products that use LLMs, and are comfortable with distributed systems at scale, this role is worth a serious look. The preferred experience in payments or fintech is a nice-to-have, not a dealbreaker — strong engineers from other domains should still apply.

How to Apply Officially

You can apply for this position only through Airwallex’s official careers portal. Do not apply through any third-party website, social media channel, or messaging platform — those are not official application paths and could be misleading or unsafe. Airwallex has also stated that all official communication will come from an @airwallex.com email address.

Official application link: Apply on Airwallex Careers

Required Documents

Airwallex has not published a specific list of required documents for this application. Based on standard practice for this type of role in Singapore, you should prepare the following before applying:

• An up-to-date CV or resume highlighting your backend development and AI/ML experience
• Copies of your university degree(s) — Computer Science, Mathematics, or equivalent
• Portfolio, GitHub links, or case studies demonstrating relevant projects (LLM products, distributed systems, AI deployments)
• Contact details for professional references who can speak to your engineering experience

The application system may request additional documents during the process. If your qualifications are from outside Singapore, you may need verified copies or translations, so it is wise to have those ready.

Frequently Asked Questions

Does Airwallex offer visa sponsorship for this role?

Not specified by the employer. The job listing does not mention visa sponsorship or work pass support. If you require a work pass to work in Singapore, contact Airwallex’s recruitment team directly before applying to confirm whether they will consider sponsoring one.

Is this a remote position?

Not specified as remote. The job is listed with the location as Singapore. Airwallex has not explicitly stated the work model for this role, so you should confirm with the employer whether any flexibility exists.

What programming languages or tech stack does this role use?

The job listing does not specify particular programming languages. It mentions backend software development, AI, LLMs, and large-scale distributed systems. Airwallex generally uses Go, Java, and Python across its engineering teams, but you should confirm the specific stack for this team during the interview process.

What is the Global Treasury and Payment Network team?

GTPN is Airwallex’s founding product team and remains the largest revenue driver. It handles the core payment infrastructure — moving money across borders, managing treasury operations, and building the financial rails that the rest of the company’s products run on. The team is distributed across the US, Singapore, Hong Kong, and Shanghai.

What does the equity component look like?

The listing states that the role includes equity but does not specify the amount, type (options vs. restricted stock units), vesting schedule, or current valuation. You should discuss the full equity package with Airwallex during the interview process.

Relevant Links

• Singapore Jobs on JobsRivo
• IT and Technology Jobs on JobsRivo
• Singapore Employment Pass — Official MOM Information

Disclaimer

JobsRivo is an independent job listing portal and is not the employer. Applicants should apply only through the official employer website. JobsRivo does not charge fees, process visas, or guarantee job offers.