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2 Days ago

Sr Software Engineer

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Information Technology
Full-Time
Qualys

Overview

Come work at a place where innovation and teamwork come together to support the most exciting missions in the world!
About the Role
We are seeking a Senior Software Engineer – Java with 5–7 years of hands-on experience to design, build, and scale backend services and integrations. This role requires a strong foundation in Java, deep knowledge of Spring Boot, and a solid understanding of core programming concepts like threading, locks, and generics. Familiarity with system design, clean code principles, and infrastructure tools like Kubernetes, Prometheus, and Grafana is also important. A background in building integrations or connectors between systems is a strong plus.
Key Responsibilities
  • Develop robust backend applications using Java and Spring Boot.
  • Design and implement RESTful APIs, microservices, and backend components.
  • Apply strong understanding of Java core concepts: threading, locks, generics, collections.
  • Build and maintain integrations/connectors between internal systems or third-party platforms.
  • Contribute to system design and architecture decisions, including scalability, caching, load balancing, and resiliency.
  • Follow and advocate for clean code, SOLID, and DRY principles.
  • Collaborate with frontend engineers, DevOps, QA, and product managers to ship reliable features.
  • Participate in code reviews and provide technical mentorship to peers.
  • Monitor application health and performance using tools like Prometheus, Grafana, or ELK stack.
  • Deploy and manage services in containerized environments, with exposure to Kubernetes.
Required Skills & Qualifications
  • 5–7 years of backend development experience using Java (8+).
  • Expertise in Spring Boot and building scalable, production-grade systems.
  • Strong knowledge of:
    • Concurrency and multithreading
    • Locks and synchronization mechanisms
    • Java generics and data structures
  • Practical experience with REST API design, versioning, and security.
  • Familiarity with system design concepts like caching, rate limiting, circuit breakers, and fault tolerance.
  • Solid understanding of clean code practices and software design principles (SOLID, DRY).
  • Experience with SQL databases (e.g., PostgreSQL, MySQL) and query optimization.
  • Comfortable working with Git, Agile workflows, CI/CD, and code review processes.
Nice to Have
  • Experience building integrations/connectors with third-party systems.
  • Familiarity with Kubernetes and container orchestration.
  • Exposure to monitoring and alerting tools like Prometheus, Grafana, ELK.
  • Knowledge of messaging systems (e.g., Kafka, RabbitMQ).
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