Senior Software Engineer, Scale

AirwallexYesterday

Location

US - San Francisco

Type

Full Time

Salary

USD 160,000 – 270,000

Level

Senior

Role

Senior Software Engineer

Posted

Mar 17, 2026

Full TimeSenior

The role

Summary

Airwallex is seeking a Senior Software Engineer for its Scale Platform team in San Francisco, focusing on building and maintaining a multi-tenant embedded finance infrastructure that powers global businesses. The ideal candidate will design scalable, high-performance systems with expertise in enterprise-level software architecture and cross-domain product development.

What you'll do

Embedded Finance Platform Development: Architect and maintain multi-tenant infrastructure supporting enterprise-grade customers with high availability and performance requirements

Cross-Domain Feature Development: Design and implement complex features spanning business, regulatory, and technical domains

Solutions Architecture: Translate enterprise business requirements into robust technical solutions that drive sales and meet complex integration needs

Performance Optimization: Implement system designs that balance flexibility, scalability, and maintainability while meeting strict performance criteria

What we look for

Technical

Java Expertise5+ years of software engineering experience with Java/Spring Boot

System DesignAdvanced skills in creating flexible and maintainable system architectures

High-Performance ComputingExperience with large-scale, high-throughput systems

Education

Computer ScienceBachelor's degree in Computer Science, Software Engineering, or related technical field preferred

Experience

Software EngineeringMinimum 5 years of professional software engineering experience

Enterprise ArchitectureExperience designing scalable, multi-tenant SaaS platforms

Skills

Required skills

JavaPrimary programming language with Spring Boot expertise

System DesignAbility to create flexible and simple system architectures

Cross-functional CommunicationEffective communication across technical and non-technical teams

Performance OptimizationPragmatic approach to balancing performance and development velocity

Nice to have

Fintech ExperienceBackground in payments, financial services, or regulated industries

High-Scale PerformanceExperience with 100k+ queries per second and strict latency SLAs

Cloud PlatformsProficiency in AWS, GCP, or Azure

Database TechnologiesExperience with PostgreSQL, Redis, Kafka

API DesignExpertise in OAuth2.0 and developer documentation

Compensation & benefits

Salary

USD 160,000 – 270,000 (annual)

Stock options

Available

Benefits

Competitive Compensation

Comprehensive salary package with potential for performance-based bonuses

Career Growth

Opportunities for professional development and advancement in a high-growth fintech environment

Global Exposure

Work with a multinational team spanning 26 offices worldwide

Innovative Environment

Join a unicorn startup valued at $8 billion with world-class investors

Interview process

1
Initial Screening — Phone or video call with recruiting team to discuss background and role fit
2
Technical Assessment — Online coding challenge and system design evaluation focusing on Java and architectural problem-solving
3
Technical Interviews — Multiple rounds of interviews with senior engineering team, covering technical skills, system design, and problem-solving capabilities
4
Architectural Design Interview — In-depth discussion of candidate's approach to complex system design and scalability challenges
5
Final Leadership Interview — Discussion with engineering leadership about team fit, career growth, and alignment with company mission