Lead Software Engineer - Performance

Qualys; Maharashtra; On-site; INR 4,000,000 - 7,500,000; Full time

Job summary

Qualys seeks a Lead Software Engineer – Performance to deliver roadmap features for Unified Asset Inventory ETM Platform, enabling customers to measure, communicate and eliminate cyber risks.

You will lead performance engineering across Java microservices, Spark, Kafka, Elasticsearch, and Middleware APIs, ensuring enterprise-grade SLAs for real-time data pipelines.

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.

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.

Skills

Java development

Spring Boot

Hibernate

Python scripting

Bash scripting

Performance engineering

JMeter

AppDynamics

Grafana

Prometheus

Kafka

Elasticsearch/OpenSearch

Spark

JVM tuning

CI/CD integration

Cloud-native architecture

Linux performance

Jenkins

GitHub

Education

Bachelor's degree in computer science, Engineering, or related field

Tools

JMeter

AppDynamics

Grafana

Prometheus

Kibana/ELK

Spring

Docker

Kubernetes

Jenkins

GitHub Actions

Job description

Come 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 microservice, 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