Java Developer

Aquent is proud to partner with a pioneering global leader in financial technology to find a passionate engineer who will directly shape the future of critical, high-performance platforms. In this dynamic role, you will have a profound impact on systems that serve millions of users daily, driving performance and resiliency initiatives for a cutting-edge, Java-based infrastructure. If you thrive on solving complex technical challenges and optimizing large-scale systems to run with unparalleled speed and reliability, this is your opportunity to elevate user experiences on a massive scale.

The Opportunity

Step into a pivotal position where you will independently lead performance tuning and resiliency efforts for a high-throughput, low-latency platform. You will dive deep into codebases, diagnose complex bottlenecks, and architect solutions that elevate system stability and responsiveness across diverse environments from client-side to cloud. This role offers a unique opportunity to influence architectural decisions, collaborate with cross-functional teams, and implement critical improvements that ensure seamless operations for millions of users.

What You'll Do

• Code performance test scripts in Core Java and develop/maintain Unix shell and Python-based frameworks.
• Develop custom tooling, create mock services, and manage the tool repository to support performance initiatives.
• Collaborate with project owners and stakeholders to gather and analyze performance requirements.
• Write comprehensive performance test plans, execute tests, monitor application behavior, and pinpoint code-level performance bottlenecks.
• Identify and collect crucial system performance metrics.
• Address client-side and server-side performance issues, recommending and implementing enhancements for resiliency and tuning.
• Provide expert solutions for production monitoring.
• Quickly understand complex codebases and navigate ambiguous design constraints to deliver effective solutions.
• Develop a deeper understanding of system architecture to devise unique, scalable solutions that optimize the user experience.
• Partner with the Performance QA team to conduct rigorous test runs, stressing system capabilities and identifying performance limitations at the code level.

What You'll Bring

• Bachelor's degree in Computer Science, Engineering, or a related field.
• 5+ years of experience with Java, J2EE (client and server side), Spring framework, Spring Boot, and Spring Cloud development.
• 5+ years of experience with distributed systems/software, real-time processing, relational database systems, and messaging systems.
• Strong Linux background, including extensive experience in shell scripting.
• Demonstrated expertise in concurrency and multi-threading.
• Solid understanding of data structures, algorithms, and design patterns.
• Proven experience troubleshooting and diagnosing JVM issues (e.g., thread dumps, garbage collection, memory management).
• Experience with resiliency implementations such as CircuitBreakers, Shapers, LoadBalancers, and Failover.
• Hands-on experience with Java-based, high-throughput, low-latency, real-time systems.
• Proficiency in using monitoring tools like Splunk and Grafana.
• Strong analytical, organizational, and problem-solving skills, with the ability to evaluate alternatives and provide solutions consistent with strategic objectives.
• Knowledge of professional software engineering practices, including best practices for the full software development life cycle, coding standards, code reviews, source control management, build processes, testing, and operations.
• Highly motivated, self-starting individual capable of making effective independent decisions.

Bonus Points

• Experience in the Financial Services industry.
• Experience with trading platforms.
• DevOps and build automation experience.
• Experience working with cloud computing platforms, including AWS and Google Cloud.
• Familiarity with AI tools integrated with Visual Studio or IntelliJ IDEA.