Java Developer - Senior

Our client is seeking a Java Developer - Senior to join the thinkorswim® Performance Engineering team. As a Java Developer - Senior, I will independently plan and deliver performance and resiliency initiatives for a Java-based trading platform, with a focus on latency, scalability, reliability, and resiliency. I’ll build workloads and tools, identify code and system bottlenecks, and recommend improvements across client, server, gateway, infrastructure, and cloud environments.

Job Title:Java Developer - Senior

Location:Southlake, TX (Ann Arbor, MI is a backup option)

Pay Range: $65-$68/hr 

What's the Job?

• Code performance test scripts in Core Java to support performance and resiliency initiatives.
• Develop and maintain Unix shell and Python-based framework components used for performance testing.
• Create custom tooling, including mock services, and maintain a tool repository to support repeatable test execution.
• Gather and analyze performance requirements with project owners and stakeholders, then translate findings into actionable code, configuration, capacity, and design recommendations.
• Monitor application behavior during test runs and production support activities, analyze results, and identify code-level performance bottlenecks.

What's Needed?

• Bachelor’s degree in computer science or engineering.
• 5+ years of Java and J2EE (client and server side) development experience, including Spring, Spring Boot, and Spring Cloud.
• 5+ years of experience with distributed systems/software, real-time processing, relational database systems, and messaging systems.
• Linux background with experience in shell scripting.
• Strong diagnostic skills, including troubleshooting JVM issues (e.g., thread dumps, garbage collection, and memory management) and deep understanding of concurrency and multi-threading.

What's in it for me?

• Opportunity to work on a high-throughput, low-latency, real-time Java trading platform where performance and resiliency directly impact the client experience.
• Chance to independently plan and deliver initiatives across code, configuration, capacity, and design recommendations.
• Work with performance monitoring and analysis tools such as Splunk and Grafana (or similar monitoring solutions).
• Collaborate with Performance QA to stress system capabilities and pinpoint bottlenecks at the code level.
• Contract-to-hire role with onsite expectations of 4 days per week.

Upon completion of waiting period consultants are eligible for:

• Medical and Prescription Drug Plans
• Dental Plan
• Vision Plan
• Health Savings Account
• Health Flexible Spending Account
• Dependent Care Flexible Spending Account
• Supplemental Life Insurance
• Short Term and Long Term Disability Insurance
• Business Travel Insurance
• 401(k), Plus Match
• Weekly Pay

If this is a role that interests you and you'd like to learn more, click apply now and a recruiter will be in touch with you to discuss this great opportunity. We look forward to speaking with you!

About ManpowerGroup, Parent Company of: Manpower, Experis, Talent Solutions, and Jefferson Wells.

ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills. Our expert family of brands – Manpower, Experis, Talent Solutions, and Jefferson Wells – creates substantial value for candidates and clients across more than 75 countries and territories and has done so for over 70 years. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2023 ManpowerGroup was named one of the World's Most Ethical Companies for the 14th year - all confirming our position as the brand of choice for in-demand talent.