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Software Engineer – Platform & Middleware

Job Summary

We are seeking a talented and motivated Software Engineer to join Qualys’ next-generation Platform & Middleware team. This role is ideal for engineers who enjoy building scalable backend systems, solving distributed systems challenges, and contributing to the development of large-scale cloud-native platforms.

You will participate in the design, development, deployment, and support of highly scalable SaaS-based cloud security platforms processing hundreds of millions of transactions and terabytes of data daily. The role provides an opportunity to work on modern microservices architectures, cloud-native platforms, and large-scale distributed systems while growing technical expertise and engineering excellence.

Responsibilities

• Design and develop scalable backend services, platform components, and middleware systems using Java and related technologies

• Build reliable and maintainable APIs, distributed services, and cloud-native applications for large-scale SaaS environments

• Write clean, efficient, and maintainable code following engineering best practices

• Participate in architecture discussions, design reviews, performance optimization, scalability improvements, and reliability initiatives

• Build reusable frameworks, libraries, tools, and developer utilities to improve engineering productivity

• Collaborate with architects, DevOps, and engineering teams to support CI/CD, observability, and operational excellence

• Troubleshoot distributed systems issues across services, databases, messaging systems, and cloud infrastructure

• Participate in code reviews, debugging, root cause analysis, and production support activities

• Contribute to system reliability, resiliency, monitoring, and operational visibility across platform services

• Follow engineering best practices, coding standards, and continuous improvement initiatives

• Explore and adopt modern engineering tools and productivity practices where applicable

Required Skills & Experience

• 1–5 years of hands-on experience in backend software development for SaaS products or distributed systems

• Strong programming skills in Java with a good understanding of object-oriented design principles, data structures, concurrency, and system design fundamentals

• Experience building RESTful APIs, microservices, and distributed applications

• Experience with messaging technologies such as Kafka, RabbitMQ, JMS, or similar systems

• Exposure to CI/CD pipelines and DevOps practices using tools such as Jenkins, GitLab, Docker, Kubernetes, or Helm

• Strong understanding of databases, SQL optimization, and data modeling concepts

• Exposure to NoSQL technologies such as Cassandra, MongoDB, or Redis

• Familiarity with cloud platforms such as AWS, Azure, or private cloud environments

• Strong debugging, troubleshooting, and analytical problem-solving skills

• Understanding of scalability, resiliency, observability, and production-grade system design concepts

Preferred Qualifications

• Experience working on cloud security, cybersecurity, or enterprise SaaS platforms

• Exposure to performance engineering and observability tools

• Experience contributing to large-scale distributed systems and cloud-native platforms

• Interest in AI-assisted development tools such as Cursor, Windsurf, Claude Code, GitHub Copilot, or similar platforms

• Basic understanding of emerging AI engineering concepts such as MCP integrations, agentic workflows, RAG pipelines, AI-powered developer tooling, or LLM-based automation

• Understanding of SRE concepts and production reliability engineering

Education

• Bachelor’s or Master’s degree in Computer Science, Engineering, or equivalent practical experience