Performance Developer with JavaScript & Python Scripting Expertise

Performance Developer | JavaScript & Python Scripting with Performance Engineering Expertise

Job Summary
Synechron is seeking a skilled Performance Developer with deep expertise in scripting and performance engineering to join our team. This role is pivotal in designing and implementing performance test frameworks and analyzing system-level behaviors to ensure optimal performance of high-throughput payment systems including Fedwire, RTP, and FedNow. The Performance Developer will collaborate closely with engineering and operations teams to identify and remediate performance bottlenecks, contributing to enhanced system reliability and business continuity.

Software Requirements

Required:

• Strong scripting proficiency in JavaScript and Python for automation and workload generation.

• Experience with performance testing tools such as JMeter or Grafana K6.

• Familiarity with version control and CI/CD tools like Jenkins, GitLab, or GitHub Actions.

• Knowledge of monitoring and observability platforms including Grafana, Prometheus, Dynatrace, AppDynamics, CloudWatch, or similar.

• Basic understanding of Java and Spring Boot for application performance analysis.

• Knowledge of REST APIs, SQL, JSON, and microservice architectures.

Preferred:

• Experience with Docker and Kubernetes for containerized environments.

• Familiarity with cloud platforms such as AWS, Azure, or GCP.

• Exposure to messaging systems such as Kafka or RabbitMQ.

Overall Responsibilities

• Design, develop, and maintain performance automation scripts and frameworks using JavaScript and Python.

• Build scalable utilities and libraries to support continuous performance validation.

• Develop performance workloads suitable for JMeter, K6, or equivalent tools.

• Analyze performance metrics including response times, throughput, CPU, memory, garbage collection, I/O, and database latency.

• Execute and interpret load, stress, endurance, and capacity tests on high-throughput payment systems.

• Collaborate with development teams to analyze code-level performance and recommend optimizations.

• Integrate performance testing within CI/CD pipelines to enable automated performance validation.

• Use monitoring tools to evaluate real-time system behavior and create performance dashboards and trend reports.

• Participate in JVM tuning, database tuning, infrastructure optimization, and microservice performance discussions.

• Quickly learn and adapt to new performance technologies, tools, and cloud platforms.

Technical Skills (By Category)

Programming Languages

• Required: JavaScript, Python (strong scripting expertise).

• Preferred: Basic Java for application flow analysis.

Databases/Data Management

• Required: SQL knowledge for database performance assessment.

Cloud Technologies

• Preferred: Experience with AWS, Azure, or GCP.

Frameworks and Libraries

• Required: Performance testing tools such as JMeter, Grafana K6.

• Preferred: Familiarity with Docker, Kubernetes.

Development Tools and Methodologies

• Required: CI/CD frameworks such as Jenkins, GitLab, GitHub Actions.

• Required: Version control with Git.

• Agile software development methodologies experience preferred.

Security Protocols

• Awareness of security best practices in performance testing environments beneficial.

Experience Requirements

• Minimum 3+ years of experience in performance engineering or related software development roles.

• Demonstrated proficiency in scripting for performance automation and workload generation.

• Experience with analyzing system telemetry (CPU, memory, GC logs, thread dumps) and distributed system behaviors.

• Prior exposure to payment systems or financial services is an asset.

• Alternative experience: Strong performance engineering skills acquired through related high-throughput system projects or open-source contributions.

Day-to-Day Activities

• Develop and maintain performance test scripts and frameworks using JavaScript and Python.

• Collaborate with engineering teams to design performance tests reflecting realistic workloads.

• Analyze test results and system telemetry to identify bottlenecks and optimization opportunities.

• Integrate and automate performance tests within CI/CD pipelines and continuous delivery workflows.

• Prepare detailed reports on performance trends, system behavior, and tuning recommendations.

• Participate actively in Agile team ceremonies including sprint planning, stand-ups, and retrospectives.

• Keep abreast of emerging performance engineering tools, practices, and cloud technologies.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent professional experience.

• Relevant certifications in performance engineering, scripting, or cloud technologies are advantageous.

• Commitment to ongoing professional development through training, workshops, and certification programs.

Professional Competencies

• Strong analytical and critical thinking skills to evaluate complex system performance data.

• Excellent collaboration skills to work effectively across teams and disciplines.

• Clear and effective communication abilities for technical reporting and stakeholder engagement.

• Adaptable and proactive learning approach in a rapidly evolving technology landscape.

• Innovation mindset focused on continuous improvement and automation.

• Time management and prioritization skills to handle multiple concurrent performance initiatives.

S​YNECHRON’S DIVERSITY & INCLUSION STATEMENT

Diversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and is an affirmative action employer. Our Diversity, Equity, and Inclusion (DEI) initiative ‘Same Difference’ is committed to fostering an inclusive culture – promoting equality, diversity and an environment that is respectful to all. We strongly believe that a diverse workforce helps build stronger, successful businesses as a global company. We encourage applicants from across diverse backgrounds, race, ethnicities, religion, age, marital status, gender, sexual orientations, or disabilities to apply. We empower our global workforce by offering flexible workplace arrangements, mentoring, internal mobility, learning and development programs, and more.

All employment decisions at Synechron are based on business needs, job requirements and individual qualifications, without regard to the applicant’s gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.

Candidate Application Notice

Experience Level

Senior Level