Join our team as a **Senior Software Engineer** focused on performance and scalability. You will design, build, and deploy solutions to manage platform limits, ensuring resource fairness and system stability. Collaborate with engineering teams and contribute to improving load testing methodologies. Apply now to be part of a dynamic, growth\-oriented environment. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi\-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting\-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential. **Responsibilities** * Collaborate with engineering teams to understand system architecture and identify performance bottlenecks * Provide data\-driven recommendations for platform improvements * Contribute to the continuous enhancement of load testing tools and methodologies * Document test plans, results, and technical insights clearly * Optimize platform bottlenecks to improve scalability and stability * Create and implement limits enforcement mechanisms at various platform entry points * Support the development and maintenance of monitoring and alerting systems * Assist in debugging and resolving performance issues * Participate in CI/CD pipeline improvements * Engage with cross\-functional teams to align on platform governance goals **Requirements** * 3\+ years of experience in software development * Proficiency in PHP and at least one of Go or Scala programming languages, with a willingness to work across all three * Experience with OpenTelemetry, Prometheus, and Elastic Stack (ELK) * Familiarity with cloud platforms such as Google Cloud Platform, AWS, or Azure * Competency in microservice architectures * Experience with continuous integration and continuous deployment (CI/CD) pipelines * Strong problem\-solving and debugging skills * Experience in the e\-commerce domain, including store operations, catalog management, and checkout flows * Exceptional communication skills to explain complex technical concepts to diverse audiences * High degree of drive and initiative with proactive problem\-solving * Strong growth mindset eager to learn new technologies and adapt to evolving challenges * Upper\-Intermediate English level or higher **Nice to have** * Familiarity with distributed systems and event\-driven architectures * Experience in scalability and performance testing including load generation, monitoring, and analysis * Experience building and maintaining automation for testing, data collection, and reporting * Hands\-on expertise with load testing tools such as K6, JMeter, and Blazemeter **We offer** * Connectivity Bonus (25,000 ARS are paid with a salary receipt at the end of each month as a non\-wages concept). * Medicina Prepaga (It covers the collaborator and direct family group). * Paternity Leave (Two additional days are added to what is established by law, total of 4 days). * Discounts card. * English Training (English lessons, twice per week). * Training Program (Access to multiple customized training plans according to the needs of each role within the company). * Marriage bonus (The company doubles the allowance established by law that ANSES offers). * Referral Program (Referral bonus is paid when the referral of a collaborator joins the Company). * External Agreements and Discounts. * Vacations: 14 calendar days a year *By applying to our role, you are agreeing that your personal data may be used as in set out in EPAM´s Privacy Notice and Policy.*