Senior Lead Software Engineer

xender tech pte. ltd.; Singapore; On-site; SGD 180,000 - 240,000; Full time

Job summary

xender tech pte. ltd. is seeking a Senior Lead Software Engineer (Java Backend) to architect and rapidly deliver robust backend systems.

You will lead the design of high-concurrency platforms and oversee distributed services, payment integration layers, and real-time matching components. The role requires 10+ years in Java backend, strong Spring/Spring Cloud skills, and hands-on cloud experience with AWS and Alibaba Cloud.

Qualifications

• Bachelor’s degree in software engineering or related field.
• 10+ years of professional Java backend development, distributed systems, and system architecture.
• Strong expertise in Spring/Spring Cloud, Redis, Kafka, RocketMQ, and MySQL.
• Hands-on experience with AWS and Alibaba Cloud.

Responsibilities

• Architect and develop high-concurrency, transaction-intensive backend systems.
• Build and maintain scalable backend services including payment gateways and wallet systems.
• Manage cloud-based applications and data platforms on AWS and Alibaba Cloud.
• Apply distributed locks, load balancing, and degradation strategies for high-volume transactions.
• Drive end-to-end delivery from architecture to production deployment and optimization.

Skills

Leadership

Architecture design

Problem solving

International collaboration

Education

Bachelor’s Degree in Software Engineering

Tools

Spring / Spring Cloud

Redis

Kafka

RocketMQ

MySQL

AWS

Alibaba Cloud

Job description

Job Description

We are looking for a highly skilled and experienced Senior Lead 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.