Lead Software Engineer - Performance

Qualys; Pune District; On-site; INR 4,000,000 - 7,000,000; Full time

Job summary

Qualys in Pune, India, seeks a Lead Software Engineer – Performance to own performance for the Unified Asset Inventory ETM Platform, spanning Java microservices, Spark, Kafka, Elasticsearch, and middleware APIs at scale.

You will design and execute performance tests, identify bottlenecks, and drive optimizations across real-time data pipelines, ensuring enterprise SLAs and cost efficiency while collaborating with cross-functional teams.

Qualifications

• Bachelor's degree in computer science or related field.
• 8+ years in distributed systems and backend performance engineering.
• 4+ years Java development with microservices.
• Hands-on Spark, Kafka, Elasticsearch experience and performance testing tools.
• Strong knowledge of JVM, GC, threading, and observability tools.
• Experience with CI/CD and cloud-native architectures.

Responsibilities

• Own performance strategy across Spring Boot microservices and big data components.
• Lead performance testing plans, load tests, and soak tests.
• Identify bottlenecks and optimize Spark jobs, Kafka, ES queries, and APIs.
• Create performance dashboards and provide deep-dive analyses.
• Collaborate with developers, architects, and infra teams to drive improvements.
• Build and maintain a CI/CD integrated performance testing framework.

Skills

Distributed systems

Performance engineering

Java development

Spring Boot

System performance analysis

Linux

Cloud-native architectures

Communication

Education

Bachelor's degree in Computer Science or related field

Tools

Apache Spark

Kafka

Elasticsearch/OpenSearch

JMeter

AppDynamics

Grafana

Prometheus

Kubernetes

Docker

Job description

## Lead Software Engineer - PerformanceApplylocations: Punetime type: Full timeposted on: Posted 2 Days Agojob requisition id: R0004794Come work at a place where innovation and teamwork come together to support the most exciting missions in the world!**Job Description Summary :** We are seeking a talented Lead Software Engineer – Performance to deliver roadmap features of Unified Asset Inventory ETM Platform which would help customers to Measure, Communicate and Eliminate Cyber Risks.You will lead the performance engineering efforts across Java microervice, Spark, Kafka, Elasticsearch, and Middleware APIs, ensuring that our real-time data pipelines and services meet enterprise-grade SLAs.As part of our high-performing engineering team, you will design and execute performance testing strategies, identify system bottlenecks, and work with development teams to implement performance improvements that support billions of cyber security events processing in a day across our data platform. **Responsibilities:*** Own the performance strategy across distributed systems which includes Spring Boot microservices, Hadoop, Spark, Kafka, Elasticsearch/OpenSearch, Big Data Components and APIs for each release.* Strong expertise in performance engineering, including analysis of Heap Dumps, Thread Dumps, GC Logs, and CPU Profiling Reports; hands-on experience with Apache JMeter, AppDynamics, Grafana, and Prometheus; and deep understanding of JVM Architecture, Garbage Collection, Threading, and Concurrency.* Define, develop, and execute performance test plans, load tests, stress tests, and soak tests.* Create realistic performance test scenarios for data pipelines and microservices based on production-like workloads.* Proactively identify bottlenecks, resource contention, and latency issues using tools such as JMeter, Spark UI, Kafka Manager, Elastic Monitoring and App Dynamics.* Provide deep-dive analysis and recommendations on tuning and scaling Spark jobs, Kafka topics/partitions, ES queries, and API endpoints.* Collaborate with developers, architects, and infrastructure teams to integrate performance feedback into design and implementation.* Simulate and benchmark real-time and batch data flow at scale using synthetic and production-like datasets and own this framework end to end for synthetic data generator.* Lead the initiative to build a performance testing framework that integrates with CI/CD pipelines.* Establish and track SLAs for throughput, latency, CPU/memory utilization and Garbage collection.* Create performance dashboards and visualization using Prometheus/Grafana, Kibana, or equivalent.* Document performance test findings and create technical reports for leadership and engineering teams.* Recommend performance optimization to Dev and Platform groups.* Responsible for optimizing the overall cost.* Contribute to feature development and fixes apart from performance benchmarking.**Qualifications**:* Bachelor's degree in computer science, Engineering, or related field.* 8+ years of overall experience in distributed systems and backend performance engineering.* 4+ years of JAVA development experience with Microservices architecture.* Proficient in scripting (Python, Bash) for automation and test data generation.* 4+ years of hands-on experience with Apache Spark – performance tuning, memory management, and DAG optimization.* 3+ years of experience with Kafka – topic optimization, producer/consumer tuning, and lag monitoring.* 3+ years of experience with Elasticsearch/OpenSearch – query profiling, indexing strategies, and cluster optimization.* 3+ years of experience with performance testing tools such as JMeter or similar.* Excellent programming and designing skills and Hands-on experience on Spring, Hibernate.* Deep understanding of middleware and microservices performance including REST APIs.* Strong knowledge of profiling, debugging, and observability tools (e.g., Spark UI, Athena, Grafana, ELK).* Experience designing and running benchmarks at scale for high-throughput environments in PBs.* Experience with containerized workloads and performance testing in Kubernetes/Docker environments.* Solid understanding of cloud-native architecture (OCI) and distributed systems design.* Strong knowledge of Linux operating systems and performance related improvements.* Familiarity with CI/CD integration for performance testing (e.g., Jenkins, GitHub).* Knowledge of data lake architecture, caching solutions, and message queues.* Strong communication skills and experience influencing cross-functional engineering teams.**Additional Plus Competencies:** Prior experience in any analytics platform on Big Data would be a huge plus