Senior Software Engineer, GTPN Platform
Backend Engineer · Senior · Full Time
Opens Airwallex's application page
Role
What you'll do.
Senior Software Engineer role at Airwallex's GTPN Platform team, focused on building global payment infrastructure and treasury solutions. The position requires 5+ years of experience with strong expertise in Kotlin/Java backend development, system design, and data-driven decision making to expand Airwallex's payment network coverage.
Responsibilities
- Backend Development: Develop and maintain robust backend services using Kotlin/Java for global payment processing systems
- System Architecture: Design scalable system architectures for financial infrastructure supporting 200,000+ businesses
- Cross-functional Collaboration: Work closely with product managers, designers, and engineers across global teams to deliver financial products
- Data-Driven Optimization: Leverage analytics and data insights to measure product success and identify growth opportunities
- Customer-Centric Development: Understand customer needs and challenges to design solutions that enhance user experience
- Payment Network Expansion: Contribute to expanding Airwallex's global treasury and payment network coverage
- Innovation and Problem Solving: Develop cutting-edge financial solutions that directly impact business growth worldwide
- Performance Monitoring: Implement monitoring and optimization strategies for high-performance financial systems
Qualifications
What we look for.
Technical
Kotlin/Java Expertise
Strong proficiency in Kotlin and Java for backend development with minimum 5 years experience
System Design
Extensive experience in designing scalable distributed systems and software architecture
Data Analysis
Strong analytical skills with ability to interpret data for decision-making and product optimization
Financial Systems Knowledge
Understanding of payment processing, treasury operations, and financial infrastructure
API Development
Experience building and maintaining RESTful APIs and microservices
Database Management
Proficiency with relational and NoSQL databases for financial data handling
Education
Bachelor's Degree
Bachelor's degree or above in Computer Science, Engineering, or related technical field
Experience
Software Engineering Experience
Minimum 5 years of professional software engineering experience
Backend Development
Proven track record in backend development with focus on scalable systems
Product Development
Experience working in product-driven environments with cross-functional teams
Financial Technology
Preferred experience in fintech, payments, or financial services industry
Skills
Required
Kotlin Programming
Expert-level proficiency in Kotlin for backend development
Java Development
Strong experience with Java for enterprise-grade applications
System Architecture
Ability to design and implement scalable distributed systems
Data Analysis
Strong analytical skills for data-driven decision making
Problem Solving
Excellent problem-solving abilities for complex technical challenges
Preferred
ReactJS
Nice to haveFrontend development experience with React for full-stack capabilities
Financial Domain Knowledge
Nice to haveUnderstanding of payment systems, treasury operations, and financial workflows
Cloud Platforms
Nice to haveExperience with AWS, GCP, or Azure for scalable cloud deployments
DevOps Practices
Nice to haveKnowledge of CI/CD, containerization, and infrastructure automation
API Design
Nice to haveExperience designing and implementing RESTful APIs and GraphQL
Database Optimization
Nice to haveSkills in database design, optimization, and performance tuning
Tech stack
Languages
Frameworks
Databases
Tools
Other
Compensation
Pay and benefits.
Benefits
Global Career Growth
Opportunities for career advancement within a rapidly growing global fintech company valued at $8 billion
International Exposure
Work with teams across 26 offices globally and collaborate with international clients
Cutting-edge Technology
Access to latest technologies and tools in the financial technology space
High-impact Work
Directly contribute to products used by 200,000+ businesses worldwide including major brands
Learning and Development
Accelerated learning opportunities in a fast-paced, innovative environment
Equity Participation
Opportunity to participate in the growth of a well-funded unicorn company
Diverse Team Environment
Work alongside 2,000+ talented professionals from diverse backgrounds
Process
Interview steps.
- 01
Initial Application Review
Resume and application screening by recruitment team focusing on technical experience and cultural fit
- 02
Technical Phone Screen
30-45 minute technical discussion covering system design concepts, Kotlin/Java experience, and problem-solving approach
- 03
Technical Assessment
Coding challenge or take-home assignment focusing on backend development, system design, or financial domain problems
- 04
Technical Interview Round
In-depth technical interview covering system architecture, data structures, algorithms, and financial technology concepts
- 05
Team Collaboration Interview
Behavioral interview assessing collaboration skills, product sense, and alignment with Airwallex's operating principles
- 06
Final Interview
Senior leadership interview focusing on cultural fit, career aspirations, and contribution to team growth
Full posting
Original listing.
About Airwallex
Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software, we empower over 200,000 businesses worldwide – including Brex, Rippling, Navan, Qantas, SHEIN and many more – with fully integrated solutions to manage everything from business accounts, payments, spend management and treasury, to embedded finance at a global scale.
Proudly founded in Melbourne, we have a team of over 2,000 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 billion and backed by world-leading investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is leading the charge in building the global payments and financial platform of the future. If you’re ready to do the most ambitious work of your career, join us.
Attributes We Value
We hire successful builders with founder-like energy who want real impact, accelerated learning, and true ownership. You bring strong role-related expertise and sharp thinking, and you’re motivated by our mission and operating principles. You move fast with good judgment, dig deep with curiosity, and make decisions from first principles, balancing speed and rigor.
You're humble and collaborative; turn zero‑to‑one ideas into real products, and you “get stuff done” end-to-end. You use AI to work smarter and solve problems faster. Here, you’ll tackle complex, high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you, let’s build what’s next.
About the team
The GTPN (Global Treasury and Payment Network) Team is at the heart of Airwallex’s payment infrastructure, specializing in expanding the coverage of Airwallex’s global treasury and payment network, enhancing its capabilities and user experience, and provisioning innovative payment products grounded in a robust financial infrastructure.
What you’ll do
As we expand our footprint globally, we're looking for passionate software engineers to join our dynamic team. This is a unique opportunity to collaborate closely with product managers and designers globally, building products that not only meet but exceed our customers' expectations.
This role is based in Singapore.
Responsibilities:
Develop and Innovate: Whether you're a backend wizard familiar with Kotlin/Java or a frontend maestro skilled in ReactJS, you'll be at the forefront of developing cutting-edge financial solutions. Your work will directly impact the growth and success of businesses worldwide.
Collaborate and Create: Work alongside a team of talented engineers, product managers, and designers to bring our finance products from concept to launch. Your input will be crucial in shaping the future of finance.
Understand and Empathize: Dive deep into our customers' needs and challenges. Your good product sense will enable you to design and implement solutions that truly resonate with our users.
Measure and Optimize: Leverage data to drive decisions. Your keen data sense will help you measure the success of our products and identify opportunities for optimization and growth.
Who you are
We’re looking for people who meet the minimum qualifications for this role. The preferred qualifications are great to have, but are not mandatory.
Preferred Qualifications:
A minimum of 5 years of engineering experience.
Bachelor degree or above in computer science or engineering related majors.
You possess a wealth of experience in system design and software development, underpinned by a robust expertise in Kotlin/Java.
You are data-driven and analytical. You view data as a narrative element of development, a critical tool that informs your decision-making process. Your ability to interpret data enhances product performance and elevates user satisfaction, making you a pivotal member of our team.
Applicant Safety Policy: Fraud and Third-Party Recruiters
To protect you from recruitment scams, please be aware that Airwallex will not ask for bank details, sensitive ID numbers (i.e. passport), or any form of payment during the application or interview process. All official communication will come from an @airwallex.com email address. Please apply only through careers.airwallex.com or our official LinkedIn page.
Airwallex does not accept unsolicited resumes from search firms/recruiters. Airwallex will not pay any fees to search firms/recruiters if a candidate is submitted by a search firm/recruiter unless an agreement has been entered into with respect to specific open position(s). Search firms/recruiters submitting resumes to Airwallex on an unsolicited basis shall be deemed to accept this condition, regardless of any other provision to the contrary.
Equal opportunity
Airwallex is proud to be an equal opportunity employer. We value diversity and anyone seeking employment at Airwallex is considered based on merit, qualifications, competence and talent. We don’t regard color, religion, race, national origin, sexual orientation, ancestry, citizenship, sex, marital or family status, disability, gender, or any other legally protected status when making our hiring decisions. If you have a disability or special need that requires accommodation, please let us know.
Redirects to Airwallex's application page.
Other roles
More at Airwallex.
Senior Software Engineer, Ecosystem
Senior
Senior Data Scientist, Analytics (Lending)
Senior
Senior Software Engineer - Growth
Senior
Engineering Director
Director
Senior Data Scientist, Algorithm (Lending & Onboarding)
Senior