Principal Software Engineer

Responsibilities

• Architecture & Design
• Lead the design and architecture of scalable distributed systems for asset intelligence, finding intelligence and threat management.
• Define architecture patterns for microservices-based platforms handling high-volume data ingestion and processing.
• Drive technical direction and platform evolution for ETM data infrastructure.
• Platform Development
• Design and implement high-performance backend services in Java .
• Build and optimize large-scale data pipelines using technologies such as Kafka, Spark, Hadoop, and streaming frameworks .
• Develop services that support real-time and batch data processing for security analytics.
• Data Platform & Search
• Architect and maintain large-scale Elasticsearch/OpenSearch clusters used for asset indexing, finding indexing, its search, and analytics.
• Design efficient indexing strategies and data models for efficient ingestion
• Optimize query performance and data retrieval across billions of records.
• Scalability & Reliability
• Build fault-tolerant, highly available services capable of operating at cloud scale.
• Ensure systems meet performance, reliability, and security requirements .
• Drive improvements in observability, monitoring, and operational excellence .
• Technical Leadership
• Provide technical leadership and mentorship to engineering teams.
• Drive design reviews, architecture discussions, and best practices .
• Influence cross-team platform strategy and engineering standards .
• Collaboration
• Partner with product management, security researchers, and data engineers to deliver impactful ETM features.
• Work closely with platform and infrastructure teams to optimize system performance and scalability.
• Job responsibilities:
• Excellent programming and designing skills with 8-12 years of hands-on experience in Java back-end development and skills with Spring-boot framework .
• Experience with Apache Kafka for distributed streaming and messaging.
• In-memory caching using Redis, Memcached, etc.
• Strong Java programming skills including object-oriented design, prototyping, development, testing, profiling, etc.
• Experience with big data processing frameworks such as Apache Spark and Hadoop .
• Expertise with RDBMS systems (preferably Oracle)
• Experience with NoSQL databases (preferably Cassandra)
• Knowledge of Docker, Kubernetes, Jenkins, and related CI/CD tools
• Ability and skill to debug & solve complex issues in a high-performing environment.
• Experience with SAAS based software products and solutions for service-oriented deployment in public or private clouds.
• Bachelors/Masters in Computer Science or Engineering equivalents
• ****************************
• Annual Salary Guidelines: $000,000 - $000,000

Additional Information

Come work at a place where innovation and teamwork come together to support the most exciting missions in the world! Job Description Qualys is seeking a Principal Software Engineer to join the Enterprise TruRisk Management (ETM) team , responsible for building large-scale data platforms that power vulnerability management, asset discovery, and threat intelligence across millions of assets globally. In this role, you will design and build high-performance distributed systems that process and analyze massive security datasets. You will collaborate with engineering, product, and architecture teams to develop scalable microservices and data pipelines that enable real-time security insights for enterprise customers. This role requires strong expertise in Java, distributed systems, big data technologies, and large-scale search platforms .

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