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Principal Software Development Engineer
Lilac Cloud
Software Engineering
Bengaluru, Karnataka, India · Hyderabad, Telangana, India
Posted on Jan 5, 2026
At F5, we strive to bring a better digital world to life. Our teams empower organizations across the globe to create, secure, and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity, from protecting consumers from fraud to enabling companies to focus on innovation.
Everything we do centers around people. That means we obsess over how to make the lives of our customers, and their customers, better. And it means we prioritize a diverse F5 community where each individual can thrive.
Position Summary
F5's NGINX Business Unit is seeking an accomplished and seasoned Principal Software Engineer primarily located in India. In this crucial role, you will assume direct responsibility for the design, development, and sustainment of our commercial management planes within the NGINX product line. Perform as a technical lead and collaborate with peers on assigned project teams. Requires little direct management to complete most development tasks.
Primary Responsibilities
Provide thorough technical insight and be a subject matter expert for the team.
Diagnose and resolve complex software challenges involving network, security, and web
technologies. This includes troubleshooting problems with HTTP load balancers, API gateways
(e.g., NGINX proxies), and related systems.
Operate within cloud orchestration ecosystems like Kubernetes, AWS/Azure public clouds.
Improve the existing functionality.
Serve as source of technical expertise to a project team and as a mentor for junior staff members.
Work cross functionally integrating, testing and debugging issues with existing system wide software.
Collaborate with team members in diverse, geographically distributed teams.
Evaluate the design and implementation of current source code.
Build tools and infrastructure to improve F5’s components and features.
May conduct presentations internal and external.
Consistently apply forward-thinking software design, implementation, and test principles.
Participate in hiring and onboarding of new engineers.
Skills
Expertise in coding with Golang and Python combined with a demonstrated ability to lead challenging software development projects.
Hands-on experience with Docker and Kubernetes, as well as developing applications using
microservices architecture
Solid knowledge of computer networking principles.
Experience with network service technologies such as HTTP, gRPC, TLS, REST APIs, and
OpenTelemetry.
Proven ability to manage and drive complex software development and testing projects in dynamic, fast-paced environments, with a clear understanding of balancing trade-offs to meet deadlines and maintain quality.
Strong skills in communication, collaboration, and leadership, with experience in guiding and
mentoring teams effectively.
A demonstrated passion for learning new technologies, backed by a history of successfully
acquiring new skills.
Qualifications
Bachelor’s or advanced degree; and/or equivalent work experience.
10+ years of experience in relevant roles.
The Job Description is intended to be a general representation of the responsibilities and requirements of the job. However, the description may not be all-inclusive, and responsibilities and requirements are subject to change.
Please note that F5 only contacts candidates through F5 email address (ending with @f5.com) or auto email notification from Workday (ending with f5.com or @myworkday.com).
Equal Employment Opportunity
It is the policy of F5 to provide equal employment opportunities to all employees and employment applicants without regard to unlawful considerations of race, religion, color, national origin, sex, sexual orientation, gender identity or expression, age, sensory, physical, or mental disability, marital status, veteran or military status, genetic information, or any other classification protected by applicable local, state, or federal laws. This policy applies to all aspects of employment, including, but not limited to, hiring, job assignment, compensation, promotion, benefits, training, discipline, and termination. F5 offers a variety of reasonable accommodations for candidates. Requesting an accommodation is completely voluntary. F5 will assess the need for accommodations in the application process separately from those that may be needed to perform the job. Request by contacting accommodations@f5.com.