Senior Full Stack Engineer

Qualys; Pune City; On-site; INR 12,00,000 - 20,00,000; Full time

Job summary

A leading cloud security firm is seeking a Senior Software Engineer – Java to design, build, and scale backend services. You will collaborate on RESTful API development, implement scalable systems using Java and Spring Boot, and mentor peers. The ideal candidate has 5–7 years of experience in backend development with strong knowledge of concurrency and cloud technologies.

Qualifications

• 5–7 years of backend development experience using Java (version 8 or above).
• Expertise in Spring Boot and building scalable, production-grade systems.
• Strong knowledge of concurrency and multithreading.

Responsibilities

• Develop robust backend applications using Java and Spring Boot.
• Design and implement RESTful APIs, microservices, and backend components.
• Build and maintain integrations between internal systems and third-party platforms.

Skills

Java

Spring Boot

Concurrency

Microservices

REST API design

SQL databases

Git

Kubernetes

Agile workflows

Tools

Prometheus

Grafana

Kafka

RabbitMQ

Job description

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 looking for a Senior Software Engineer – Java with 5–7 years of hands-on experience to design, build, and scale backend services and integrations. The ideal candidate will have a strong foundation in Java, deep expertise in Spring Boot, and solid knowledge of core programming concepts such as threading, locks, and generics. Familiarity with system design, clean code principles, and infrastructure tools like Kubernetes, Prometheus, and Grafana is essential. Experience 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: concurrency, threading, locks, generics, and collections

Build and maintain integrations/connectors between internal systems or third-party platforms

Contribute to system design and architecture decisions covering 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 deliver 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 (version 8 or above)

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 including 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 pipelines, and code review processes

Knowledge of messaging systems (e.g., Kafka, RabbitMQ)

Exposure to monitoring and alerting tools such as Prometheus, Grafana, ELK stack

Familiarity with Kubernetes and container orchestration

Nice to Have

Experience building integrations/connectors with third-party systems.

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Qualys, Inc. (NASDAQ: QLYS) is a pioneer and leading provider of disruptive cloud-based security, compliance and IT solutions with more than 10,000 subscription customers worldwide, including a majority of the Forbes Global 100 and Fortune 100. Qualys helps organizations streamline and automate their security and compliance solutions onto a single platform for greater agility, better business outcomes, and substantial cost savings.