Full Stack Developer - Full-time / Part-time

Lead Software Engineer role requiring 8+ years of Core Java, multithreading, JVM tuning, distributed systems, TCP/UDP networking, performance optimization, and architecture leadership.

Position Overview

We are seeking a highly skilled Lead Software Engineer to join a high-performing engineering team focused on building and optimizing scalable, high-throughput enterprise systems. This role is ideal for a senior engineer with deep Core Java expertise and strong experience designing and supporting distributed systems where performance, reliability, resiliency, and scalability are mission-critical.

Key Responsibilities

• Design, develop, and optimize high-performance Core Java applications.

• Lead architecture discussions around scalability, throughput, latency, and resiliency.

• Analyze, troubleshoot, and improve application performance across distributed environments.

• Develop optimized, maintainable, and scalable software components and unit tests.

• Conduct code reviews and identify opportunities for optimization and risk mitigation.

• Support deployments, release management, and production stability initiatives.

• Collaborate with engineering teams to resolve complex technical challenges.

• Tune applications for multi-threaded and high-concurrency environments.

• Drive engineering best practices, design patterns, and continuous improvement initiatives.

• Lead technical projects and influence engineering direction across teams.

Required Qualifications

• 8+ years of hands-on Core Java development experience.

• Strong expertise in:

  • Multi-threading

  • Concurrent programming

  • Shared memory and synchronization

  • JVM internals and Garbage Collection tuning

  • JNI and NIO

  • Concurrent data structures and collections

• Strong knowledge of algorithms and data structures.

• Experience with TCP/IP networking, including TCP and UDP protocols.

• Experience building scalable, high-throughput distributed systems.

• Strong troubleshooting, debugging, and performance optimization skills.

• Experience participating in architecture and system design discussions.

• Ability to balance reliability, scalability, and performance requirements.

Preferred Qualifications

• Experience in financial services, trading platforms, or derivatives systems.

• Exposure to cloud technologies.

• Knowledge of fault tolerance and redundancy patterns.

• Experience with BDD testing frameworks.

• Experience supporting low-latency systems.