Senior Software Engineer, Global Payments

re-zoo-me; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Airwallex, a global AI-native financial platform, seeks an engineer to revolutionize the security landscape of online transactions and to lead our payment integration efforts from Singapore. You will build infrastructure services, design robust APIs, and collaborate with cross-functional teams across Airwallex's offices to deliver secure, scalable payment processing.

Ideal candidates have 5+ years of engineering experience, strong system design skills, and proficiency in Java/Kotlin with Spring.

Qualifications

• Minimum 5 years engineering experience.
• Strong system design ability with high-quality code.
• Proficiency in Java/Kotlin.
• Experience with Spring/Spring Boot is preferred.
• Comfort with HTTP, RESTful APIs, OAuth2.0 / JWT and cloud services.

Responsibilities

• Build infrastructure service to enhance payment processing and security.
• Collaborate with systems and teams to strengthen global payment infrastructure.
• Engage with engineering teams across Airwallex's global offices.
• Design, develop, and maintain APIs, services, and systems for reliable payments.
• Troubleshoot production issues across the stack.
• Own and optimize critical components of the payment flow.

Skills

Java / Kotlin

System design

Tools

Spring Boot

PostgreSQL

Redis

Kafka

Nginx

Istio

AWS

Job description

About Airwallex

Airwallex is the AI-native financial operating system for a real-time, intelligent economy. More than 676,000 businesses, including McLaren Racing, Qantas, SHEIN, and TikTok, use us, directly or through our platform partners, to run their financial operations or build and monetize financial products of their own.

We started in Melbourne in 2015 to build the infrastructure global commerce runs on. We're the regulated backbone behind global payments: not by accident, but by design. A decade plus, 85+ licenses, and a financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific.

We're co-headquartered in San Francisco and Singapore, with more than 2,300 people across 27 offices. We hire builders with founder-level energy, people who move fast with good judgment, dig in with real curiosity, and make calls from first principles rather than waiting to be told what to do. Read our operating principles to see it in full.

About The Team

As a global engineering powerhouse, our team spans China, the Netherlands, and Singapore, embracing a rich tapestry of cultures and perspectives. Guided by our True North Vision, we're passionately striving to become the preferred payment partner for businesses seeking to boost revenue and streamline expenses.

Our mission is to simplify the complexities of payments for businesses by designing solutions that seamlessly integrate into their workflows, enhancing efficiency and driving customer conversion rates. Within our diverse and dynamic team, you'll find yourself at the intersection of innovation and practicality, where every contribution is essential in making payment processes effortless.

What You'll Do

Join our dynamic team as an engineer and play a pivotal role in revolutionizing the security landscape of online transactions! You will spearhead our payment integration processes.

Dive deep into diverse real-time transaction scenarios, and help us deliver unparalleled security assurance for our users. Be at the forefront of innovation, where your expertise will enhance the online shopping experience and safeguard the future of digital payments.

This role is based in Singapore.

Responsibilities

• Build our own infrastructure service, which will significantly enhance a business's payment processing capabilities, strengthen security measures, and boost customer trust.
• Collaborate with various systems and teams to establish a robust foundation for our global payment infrastructure.
• Engage with engineering teams across Airwallex's global offices, fostering effective communication.
• Regularly collaborate with users and financial partners to ensure seamless integration.
• Design, develop, and maintain APIs, services, and systems to uphold a reliable payment processing flow.
• Troubleshoot production issues across different levels of the stack.
• Take ownership of and optimize critical components within Airwallex's online payment processing flow.

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.

Minimum Qualifications

• Possess a minimum of 5 years of engineering experience.
• Excel in designing elegant systems that abstract complex patterns, particularly in the financial industry.
• Have a strong aptitude for system thinking, writing high-quality code and doc, with a preference for Kotlin.
• Uphold high standards when working with production systems.
• Adhere to best practices in engineering, security, and design.
• Thrive in collaborative environments, making decisions with diverse stakeholders and subject matter experts.
• Enjoy collaborating with a diverse group of individuals, bridging gaps between different teams and areas of expertise.

Preferred Qualifications

• Familiarity with Spring / Spring Boot.
• Proficiency in Java / Kotlin or other modern programming languages.
• Proficiency in HTTP protocol and RESTful specifications.
• Familiarity with OAuth2.0 / JWT.
• Experience with PostgreSQL / Redis / NoSQL.
• Experience with Kafka / RabbitMQ.
• Familiarity with Nginx / Istio.
• Experience with cloud vendors like Aliyun Cloud, GCP, or AWS.
• Experience in designing, implementing, and maintaining complex public API products with user integration guides.

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.