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Key Responsibilities :

- Assist senior engineers in developing load models and designing comprehensive load, stress, capacity, and endurance tests.
- Design and execute performance tests spanning micro-frontends, application services, and core enterprise services.
- Develop high-quality, maintainable code in accordance with engineering and coding standards.
- Build automation that enables engineering teams to assess the performance impact of recent code changes.
- Develop automated performance and capacity testing reports that are easy to understand for Software Engineers, SREs, and senior leadership.
- Analyze performance results, identify bottlenecks, and provide actionable recommendations.
- Work with cross-functional teams to drive performance improvements through to production.
- Serve as a technical leader within a Scrum team, participating in planning, stand-ups, retrospectives, and technical discussions.
- Mentor team members and provide technical guidance on performance engineering practices.
- Review proposed technical designs and provide thoughtful feedback on scalability, performance, and reliability.
- Collaborate with key stakeholders through technical discussions, demonstrations, and project reviews.
- Participate in Communities of Practice and continuous technical learning initiatives.
- Drive continuous improvement in performance engineering standards, processes, and automation.

Required Skills & Experience :

- 15 years of experience in Performance Testing / Performance Engineering.
- 4 years of experience working at a Principal-level capacity.
- Robust hands-on experience in designing, developing, and delivering performance engineering solutions.
- 5 years of experience with Apache JMeter or similar performance testing tools.
- Strong experience with APM and observability tools such as :
- AppDynamics




- OpenSearch
- Grafana
- Experience working with containerized Java and Node.js applications running on Kubernetes.
- Experience with traditional Virtual Machine environments and Apache Tomcat.
- Strong understanding of web technologies including HTML, HTTP, REST, JSON, and JavaScript.
- Proficiency in SQL and strong understanding of relational databases, particularly Oracle.
- Experience with source code management tools such as Git and sound software engineering practices.

Good to Have :

- Knowledge of NoSQL and time-series databases, including Apache Cassandra and InfluxDB.
- Understanding of Core Web Vitals and web performance measurement.
- Experience with tools such as :
- SiteSpeed.io
- Lighthouse
- Chrome Performance Tools
- WebPageTest
- Experience with performance engineering in large-scale distributed systems.
- Strong understanding of capacity planning and scalability engineering.

Principal-Level Leadership Expectations :

- Act as a hands-on technical leader, driving performance engineering design, development, and delivery.
- Mentor and support engineers while remaining actively involved in technical implementation.
- Work closely with key stakeholders to align technical solutions with project objectives.
- Demonstrate strong ownership, continuous improvement, and engineering excellence.
- Review and challenge proposed designs constructively, providing practical recommendations on performance, scalability, and reliability.

Preferred Candidate Profile :

- Strong analytical and problem-solving skills.
- Excellent communication and stakeholder management abilities.
- Ability to work effectively across engineering, SRE, architecture, and leadership teams.
- Passion for continuous learning and improving performance engineering practices.
- Candidates who can join within 30 days or less will be preferred.

📌 Nisum - Principal Performance Engineer (India)
🏢 Nisum
📍 India