Sr. Performance SDET Engineer

Are you interested in harnessing technology and AI to transform healthcare?

 At XiFin, we believe a healthier, more efficient healthcare system starts with strong financial and operational foundations. Our innovative technologies help diagnostic providers, laboratories, and healthcare systems manage complexity, drive better outcomes, and stay focused on what matters most: patient care.

We’re on a mission to simplify the business side of healthcare—and we know that mission takes people from all backgrounds and experiences. Whether you’re early in your career or bringing years of expertise, we welcome your perspective, your curiosity, and your passion. We value individuals who ask questions, challenge the status quo, and want to grow while making a real difference.

About the Role

The Sr. Performance Software Development Engineer in Test engineer will work in a highly collaborated agile environment across all stages of the software development cycle. This role involves architecting, designing, building test and executing performance and automation solutions to enhance the quality of our products.  

The ideal candidate for this role will possess a deep expertise in object-oriented design principles, test automation design patterns, performance, KPIs and best practices to improve testability of complex integration systems to reduce manual test execution, accelerate test efficiency and ensure optimal performance of our products. 

You will play a critical role in ensuring KPIs are met, identifying bottlenecks and collaborating with others across functions to achieve key milestones and goals.  Strong communication skills are essential to lead cross functional engineering teams as a technical leader (not the manager) to establish new approaches and to mentor top technical talent.  

This position will be located at our office in San Diego, CA.

How you will make an impact:

In this role, you’ll:

• Design and execute performance scripts for complex load, stress, endurance test scenarios using industry-standards tools to simulate real-world traffic conditions. 
• Diagnose performance limitations using profiling tools, diagnostics and metrics analysis.  
• Define product-performance level test strategies, establish SLAs and create comprehensive reports outlining risks and scalability recommendations.  
• Develop API and UI test automation tools and frameworks; propose enhancements to existing frameworks. 
• Contribute to the automation of test scenarios throughout the project lifecycle that conform to testing standards, business requirements, and architectural/design standards. 
• Develop comprehensive documentation (such as performance plans, automation design, tool evaluation, verification deliverables) consistent with department quality standards. 
• Collaborate with developers in reviewing unit test and integration results for coverage analysis. 
• Evaluate latest performance, automation technologies and AI powered tools. 
• Train and mentor cross team members on automation and performance best practices. 

What you will bring to the team:   

We’re looking for someone with a growth mindset and a passion for learning. You might be a great fit if you:

• Technical leadership through influence: able to guide peers and cross-functional teams with architecture insights and best practices without necessarily having formal management authority.
• Detail-oriented yet big-picture thinker: skilled at spotting subtle performance bottlenecks, edge cases, and integration issues, while keeping sight of system scalability and long-term maintainability.
• Continuous learner / innovation mindset: stays curious about new tools, AI enhancements, performance technologies, and proactively evaluates and experiments to improve workflow and quality.
• Collaborative communicator with empathy: translates technical risk/complexity into business terms, listens to stakeholders’ constraints, and fosters trust when driving difficult quality decisions

Skills and experience you have: 

You don’t need to check every box. We will consider a combination of education and experience, including:

• Bachelor’s degree in Computer Science or other Engineering discipline (or equivalent experience). 
• 5+ years of proven experience developing performance, API and UI test automation frameworks and solutions for complex enterprise applications. 
• Strong experience using JMeter, K6, Selenium, Selenium Grid, SOAP UI, REST Assured, REST API, SOAP WebServices for system and integration testing. 
• Proficiency in Java, JavaScript, JQuery, XPath, SQL, Oracle PL/SQL, .NET, JUnit, xUnit/NUnit/MSTest, TestNG, Angular. 
• Strong knowledge of overall system architecture, scalability, reliability, and performance. 
• Experience with Azure Kubernetes Service, CI/CD pipeline/process. 
• Experience with scripting languages like Python and shell.  
• Proficiency in Jira, Bitbucket, GitHub, Git-Hub actions, TestRail, Zephyr Scale and Jenkins. 
• Experience applying AI to enhance workflows, decision-making, and problem-solving through tools, automation, and insights. 
• Excellent communication, collaboration, reporting, analytical and problem-solving skills. 
• Perform other duties as assigned by management 

Why XiFin?

We’re more than just a healthcare technology company—we’re a team that cares about people.
 Here’s a glimpse at what we offer:

• Comprehensive health benefits including medical, dental, vision, and telehealth
• 401(k) with company match and personalized financial coaching to support your financial future  
• Health Savings Account (HSA) with company contributions
• Wellness incentives that reward your preventative healthcare activities
• Tuition assistance to support your education and growth
• Flexible time off and company-paid holidays
• Social and fun events to build community at our locations! 

Pay Transparency

At XiFin, we believe in pay transparency and fairness. The expected annual salary range for this role is $120,000 to $135,000, based on your experience, skills, and geographic location.

Final compensation will be determined during the selection process and may vary accordingly.

Accessibility & Accommodations

We’re committed to providing an inclusive and accessible experience for all applicants. If you need a reasonable accommodation during the application process, please contact us at 858-436-2901.

Equal Opportunity Employer

XiFin is proud to be an equal opportunity employer. We value diverse voices and do not discriminate on the basis of race, color, religion, national origin, gender, gender identity, sexual orientation, disability, age, veteran status or any other basis protected by law.

Ready to apply?
We’d love to hear from you—even if you’re not sure you meet every qualification. If you're excited about the role and believe you can contribute to our team, please apply. Let's build something meaningful together.

EEO Statement

XIFIN is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, gender, gender identity, sexual orientation, age, status as a protected veteran, among other things, or status as a qualified individual with disability.