Staff Software Engineer, Backend - Ecosystem

Airwallex1 months ago

Location

SG - Singapore

Type

Full Time

Level

Staff

Role

Backend Engineer

Posted

Feb 10, 2026

Full TimeStaff

The role

Summary

Staff Backend Engineer position at Airwallex's Ecosystem team, building developer platforms and integrations that connect financial services with third-party systems. The role focuses on architecting scalable APIs, SDKs, and extension frameworks for their $8B fintech platform serving 200,000+ businesses globally.

What you'll do

Platform Architecture Leadership: Lead high-level design and long-term technical roadmap for App Marketplace and Extension Framework

Extensibility Framework Development: Design and implement core SDKs, webhooks, and UI-extension patterns for third-party developer integration

Technical Standards Implementation: Establish and enforce rigorous coding standards, observability patterns, and security protocols across the team

Developer Experience Optimization: Build world-class documentation infrastructure, sandboxes, and tooling for external developers

API Integration Management: Build and integrate APIs to connect with external financial institutions and third-party platforms

Scalable Solution Development: Develop scalable solutions to support ecosystem strategy and handle growing business demands

Cross-Functional Collaboration: Work closely with product managers, designers, and go-to-market teams to deliver innovative features

Technical Roadmap Contribution: Provide input on new technologies, best practices, and strategic technical decisions

What we look for

Technical

Programming LanguagesProficiency in Java, Kotlin, C++, or Python with deep understanding of standard libraries and best practices

Large-Scale System Experience5+ years developing Internet applications, financial systems, or e-commerce platforms

API DevelopmentExperience building and maintaining public-facing developer platforms and APIs

Microservices ArchitectureUnderstanding of distributed systems and service-oriented architecture patterns

Education

Computer Science DegreeBachelor's degree in Computer Science or related technical field

Experience

Senior Backend Development5+ years of experience in developing large-scale Internet applications

Financial SystemsExperience with financial systems, e-commerce platforms, or payment processing

Platform EngineeringBackground in building developer platforms, marketplaces, or extension frameworks preferred

Skills

Required skills

Backend ProgrammingStrong proficiency in Java, Kotlin, C++, or Python

System DesignExperience with large-scale distributed systems architecture

API DevelopmentBuilding and maintaining RESTful APIs and web services

Financial SystemsUnderstanding of financial technology and payment processing

Code QualityExperience with coding standards, testing, and code review processes

Nice to have

Developer Platform ExperienceDirect experience building public-facing developer platforms or app marketplaces

Domain-Driven DesignDeep expertise in DDD patterns for managing complex business logic

Cloud-Native InfrastructureHands-on experience with Docker, Kubernetes, and observability tools

AI/LLM IntegrationExperience integrating AI models for automation and developer tooling

Extension FrameworksBuilding extensible platforms and third-party integration systems

Compensation & benefits

Benefits

Professional Development

Opportunities for career advancement and skill development in fintech

Innovative Environment

Work with cutting-edge financial technology and modern development practices

Global Impact

Contribute to platform serving 200,000+ businesses worldwide

Collaborative Culture

Work alongside talented professionals in inclusive, supportive environment

Technology Access

Access to latest technologies, tools, and methodologies

Equal Opportunity

Diverse, inclusive workplace committed to equal opportunity employment

Interview process

1
Initial Screen — Phone or video screening with recruiter to discuss background and role fit
2
Technical Assessment — Coding challenge or technical discussion focusing on system design and backend development
3
System Design Interview — Deep-dive into architecting scalable platforms and API design patterns
4
Team Interview — Meet with engineering team members and discuss collaboration and technical approaches
5
Final Interview — Leadership interview focusing on cultural fit and long-term vision alignment