Senior Software Engineer

We are looking for a highly skilled and experienced

Senior Software Engineer (Java Backend)

to lead and contribute to the architecture, design, and development of our core backend systems, distributed services, and cloud-based applications. You will play a crucial role in building high-concurrency, transaction-intensive platforms that support our international products.

Key Responsibilities:
Architecture & Development:
Design and deliver high-concurrency, transaction-intensive, and globally distributed backend systems.

Core Systems Engineering:
Build and maintain scalable backend services including payment integration layers, multi-wallet accounting systems, real-time communication/matching engines, and centralized configuration platforms.

Cloud & Data Management:
Manage cloud-based applications and data platforms using AWS (S3, Amazon Athena) and Alibaba Cloud, building efficient data ingestion pipelines and operational analytics platforms.

Optimization & Scalability:
Apply distributed locks, load balancing and service degradation to handle high-volume user transactions and high-concurrency scenarios.

End-to-End Delivery:
Drive full-lifecycle development from architecture design and backend coding to third-party service integration, production deployment, troubleshooting, and system optimization.

Requirements & Qualifications

Education:
Bachelor’s Degree in Software Engineering or a related technical field.

Experience:
Minimum of 10+ years of professional experience in Java backend development, distributed systems, and system architecture.

Technical Stack:
Strong expertise in the

Spring / Spring Cloud ecosystem

,

Redis

,

Kafka

,

RocketMQ

and

MySQL

.

Hands-on experience with cloud platforms including

AWS

and

Alibaba Cloud

.

Domain Expertise:
Proven track record in designing payment gateways, billing engines, user account authentication services, wallet systems, and real-time interactive platforms.

Soft Skills:
Strong problem-solving abilities, experience working on international/multi-country product environments, and ability to lead end-to-end technical delivery.

Xender is the app, the brand, and also the company. Xender was founded in 2011 with a vision to provide better connectivity to the world through technological innovation and user focus. Supported by a truly global team, we are committed to the highest standards of quality and user experience. With rapid growth in recent years, Xender now serves over 700 million activated users in more than 40 languages, across all time zones worldwide.