Staff Software Engineer, Growth

Airwallex; Singapore; On-site; SGD 150,000 - 250,000; Full time

Job summary

Airwallex in Singapore is looking for an experienced Software Engineer to join our Growth Team. You will design and build scalable microservices using Java or Kotlin while ensuring high availability and performance in our systems. Collaborate with cross-functional teams and work with data scientists to implement data-driven solutions. Required qualifications include a Bachelor’s degree in computer science, over 5 years of experience in engineering practices, and proficiency in cloud services such as GCP or AWS. A compensation range of SGD 150K – SGD 250K is offered.

Qualifications

• 5+ years of experience in modern engineering practices focused on continuous integration and quality engineering.
• Strong computer science fundamentals and solid understanding of OOP concepts.
• Deep working experience with high-throughput / low-latency / highly available distributed systems.

Responsibilities

• Architect, develop, and maintain microservices ensuring high-traffic systems meet user demands.
• Collaborate with data scientists and product managers to design data pipelines.
• Work with cross-functional teams to translate business requirements into scalable backend solutions.
• Develop services that support rapid A/B testing and real-time performance monitoring.
• Integrate secure coding practices to protect user data and maintain compliance.

Skills

Java/Kotlin

Data-driven decision-making

Microservices architecture

Collaboration

Event-driven architecture

Education

Bachelor's degree in computer science or engineering

Tools

Docker

Kubernetes

GCP or AWS

Splunk

Grafana

Prometheus

Job description

About Airwallex

Airwallex is the only unified payments and financial platform for global businesses. Powered by a proprietary combination of 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.

Attributes We Value

We hire 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, collaborative, and turn zero‑to‑one ideas into real products, getting stuff done end‑to‑end. You use AI to work smarter and solve problems faster. You’ll tackle complex, high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking.

The Opportunity: Be Part of Our Growth Team

Our Growth Team focuses on user acquisition and strategic market expansion. We leverage data and cutting‑edge technologies to craft seamless, intuitive experiences that help millions of users discover, engage with, and benefit from our products. From new‑user funnels to onboarding optimizations, our team is all about experimentation, rapid iteration, and driving sustainable business impact. Whether it’s designing scalable architectures for high‑traffic pages, building robust A/B testing frameworks, or integrating global marketing platforms, the team’s contributions directly shape how we attract and retain customers worldwide. Joining the team gives you a front‑row seat to the most crucial stage of our product lifecycle.

Responsibilities

• Design and Build Scalable Systems
  • Architect, develop, and maintain microservices in Java/Kotlin (or similar languages), ensuring our high‑traffic, high‑availability systems meet global user demands.
  • Implement best practices for service‑to‑service communication, orchestration, and fault tolerance.
• Enable Data‑Driven Decisions
  • Collaborate with data scientists and product managers to design data pipelines, analytics platforms, and event‑driven architectures.
  • Ensure the data powering our Growth initiatives is accurate, reliable, and easily accessible.
• Collaborate and Innovate
  • Work closely with cross‑functional teams—Frontend, Product, Design, and Marketing—to translate business requirements into scalable backend solutions.
  • Participate in architectural reviews, code reviews, and strategy sessions to continually elevate the quality and performance of our backend services.
• Experiment and Iterate
  • Develop services that support rapid A/B testing, feature toggles, and real‑time performance monitoring.
  • Continuously improve backend functionalities to reduce friction, increase user engagement, and drive conversions.
• Promote Security & Compliance
  • Integrate secure coding practices and frameworks to protect user data and maintain global regulatory compliance.
  • Identify potential vulnerabilities, ensure robust authentication and authorization mechanisms, and proactively address security risks.

Who You Are

• Experienced and technically proficient: deep expertise in Java/Kotlin, a craftsman of comprehensive solutions, and a technical bar raiser who sets high standards.
• Empathetic and insightful: deep empathy for customer needs to create intuitive, impactful products.
• Data‑driven and analytical: treat data as a narrative element, interpreting it to inform decisions and elevate performance.
• Collaborative and knowledge‑sharing: thrive in team settings, mentor peers, and foster a learning culture.
• Adaptable and continuously learning: agility to adopt new skills and technologies, turning challenges into growth opportunities.
• Proactive and ownership‑driven: self‑motivated, initiative‑taking, and ready to lead projects to successful outcomes.
• Efficient and prioritization‑savvy: excellent at prioritizing tasks, managing workload, and maintaining high quality.

Minimum Qualifications

• Bachelor’s degree or above in computer science or engineering or related majors.
• 5+ years of experience in modern engineering practices focused on continuous integration and quality engineering.
• Strong computer science fundamentals and solid understanding of OOP concepts.
• Experience with domain‑driven design and event‑driven architectures.
• Deep working experience with high‑throughput / low‑latency / highly available distributed systems.
• Cloud experience with GCP (preferred) or AWS (EC2, RDS, ELB, CloudFront, etc.) with Docker and Kubernetes.
• Familiarity with observability tooling such as Splunk, Grafana, and Prometheus.

Preferred Qualifications

• Experience with JVM‑based programming in Java or Kotlin, familiar with Spring/Spring Boot.
• Experience solving GTM operations end‑to‑end.
• Knowledge of data warehousing, customer segmentation, and analytics tools.
• Familiarity with building internal or customer‑facing products with AI & LLMs.

Applicant Safety Policy

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.

Compensation Range

SGD 150K – SGD 250K