Senior Software Engineer

Qualys   •  

Foster City, CA

Industry: Business Services


8 - 10 years

Posted 292 days ago

This job is no longer available.


We are seeking a talented Principal Software Engineer/Architect to work on Qualys’ next-generation Platform & Middleware. Working with a team of engineers and architects, you will be responsible for prototyping, designing, developing and supporting a highly scalable SaaS based cloud security platform. This is a great opportunity to be an integral part of a team building Qualys’ next generation microservices based technology platform processing over a 100 million transactions and terabytes of data per day, leverage open source technologies, and work on challenging and business-impacting projects.



  • Co-develop Qualys’ best-in-class next-generation platform and middleware products
  • Create high-performance APIs, libraries and microservices that scale to meet/exceed the demands of processing over a 100 million transactions and terabytes of data per day
  • Research, evaluate and adopt next generation technologies
  • Produce high quality software following good architecture and design principles that you and your team will find easy to work with in the future



  • 8+ years as a hands-on engineer developing SaaS based software products and solutions for service oriented deployments in public (AWS, Azure, Rackspace, etc.) or private clouds.
  • Have built scalableSaaS platforms utilizing microservices/distributed systemsarchitectureusing:
    • RESTful API's consumed by internal and external partners
    • Messaging middleware using JMS, AMQP, Kafka, NATS, etc.
    • In-memory caching using Redis, Memcached, etc.
  • Strong Java programming skills including object oriented design, prototyping, development, testing, profiling, etc.
  • Knowledge of JVM concepts like garbage collection, heap, stack, profiling, class loading, etc.
  • Excellent understanding of data structures and algorithms
  • Experience with NoSQL databases (preferably Cassandra)
  • Bachelors/Masters/Doctorate in Computer Science or equivalent


Bonus Points if you have:

  • Built a technology platform from the ground up
  • Developed search based applications using Elasticsearch or Solr
  • Experience with stream processing frameworks such as Apache Spark or Flink