Sr Full Stack Engineer

F5 Networks, Inc.; Dublin; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid work model

Remote-friendly options

Job summary

F5 Networks, Inc. is seeking a skilled Backend Software Engineer to design, develop, test, and maintain scalable backend applications powering our AI Security solutions.

You will contribute to building the AI Security web app, collaborating with cross-functional teams to deliver robust, high-performance software. The ideal candidate will have 5+ years in server-side development with Python and FastAPI, strong DB knowledge (PostgreSQL/MySQL), and experience with RESTful APIs and multi-service

Qualifications

• Experience at least 5 years developing server-side applications with Python, FastAPI or equivalent frameworks.
• Strong understanding of database technology, including PostgreSQL or MySQL.
• Proven expertise in building, debugging, and maintaining RESTful APIs and multi-service backend systems.
• Excellent troubleshooting skills to debug and analyze complex software systems.
• Passion for delivering high-quality backend solutions that meet business and customer needs.

Responsibilities

• Build and deliver backend applications, SDKs, and tools to support AI Security solutions at scale.
• Collaborate with product, QA, frontend, and data science teams to deliver high-performance software.
• Write clean, efficient, and secure code following best practices.
• Test, troubleshoot, and optimize backend services for maximum scalability and reliability.
• Architect backend features using modern design and scalable patterns.
• Continuously improve and collaborate to solve development challenges.

Skills

Python

FastAPI

REST APIs

Distributed systems

Problem solving

Tools

Docker

Kubernetes

AWS

GitLab

ArgoCD

PostgreSQL

MySQL

Job description

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.

Role Summary F5 is growing its AI Security team and is looking for an ambitious, versatile, and self-driven Backend Software Engineer. In this role, you will design, develop, test, and maintain scalable backend applications that power world-first AI Security solutions. Your contributions will be crucial to building out our AI Security web application, ensuring robust, reliable, and cutting-edge technology to successfully meet business and customer needs. This role offers an exciting opportunity to collaborate with a multidisciplinary team, solve technically challenging problems, and grow professionally in a culture that values innovation, collaboration, and team excellence.

Tech Stack

We Use Backend: Python, FastAPI, Pydantic, uvicorn Frontend: Typescript, Vue3, Vite Source Control: GitLab Continuous Delivery: ArgoCD Deployment: AWS (Dockerized applications, Helm charts, Kubernetes)

Key Responsibilities

• Build and Deliver Exceptional Technology Design, develop, and maintain scalable backend applications, SDKs, and tools to support AI Security solutions at scale.
• Collaborate with the product, QA, frontend, and data science teams to deliver seamless, user-friendly, high-performance software.
• Write clean, efficient, and maintainable code, adhering to F5's best practices in software development and secure coding.
• Ensure Quality, Performance, and Architecture Test, troubleshoot, and optimize backend services to ensure maximum scalability, performance, and reliability.
• Architect backend features based on best practices in modern software design and scalable architecture patterns.
• Continuous Improvement and Collaboration Proactively suggest and implement solutions to challenges encountered during development cycles.
• Thrive in a collaborative environment, working cross-functionally to ensure alignment with business and technical goals.
• Stay updated with emerging technologies, leveraging new tools and features where appropriate to improve backend systems.

Qualifications and Skills Required Experience

Experience At least 5 years’ experience developing server-side applications using Python, FastAPI, or equivalent frameworks. Strong understanding of database technology, including platforms like PostgreSQL or MySQL. Demonstrated expertise in building, debugging, and maintaining RESTful APIs and multi-service backend systems. Excellent troubleshooting skills to debug and analyze complex software systems. A passion for owning and delivering high-quality backend solutions that meet business and customer needs.

Core Skills

Critical Thinking: Structured problem-solving approach when debugging and troubleshooting multi-service applications. Collaboration: Proven ability to work both independently and as part of a larger engineering team. Communication: Clearly communicate ideas, features, and risks to technical and non-technical collaborators. Time Management: Ability to prioritize and manage multiple tasks effectively while meeting deadlines.

Preferred Skills

Familiarity with Dockerized applications, Kubernetes, and cloud environments like AWS. Hands-on experience with testing and delivery pipelines, including automated CI/CD workflows (e.g., ArgoCD). Knowledge of secure coding practices and deploying applications in mission-critical production environments.

Why Join the F5 AI Security Team?

• Technical Excellence: Work with modern technologies and solve unique technical challenges in the rapidly evolving AI Security space.
• Impactful Collaboration: Partner with cross-functional teams to create features that solve meaningful customer problems.
• Growth Opportunities: Advance your skills and career while contributing directly to world-first AI security innovations.
• Supportive Work Culture: We foster a collaborative team where diverse perspectives and continuous improvement drive our success.

What Success Looks Like As a Backend Software Engineer at F5

• Deliver high-quality, scalable backend services that enhance the capabilities of our AI Security products.
• Collaborate seamlessly with cross-functional teams to align engineering solutions with product goals.
• Maintain a growth mindset, adopting modern technologies and improving backend architecture to meet current and future needs.
• Troubleshoot and resolve complex production issues, minimizing downtime and ensuring system reliability.

#LI-SS5

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 [e-mail].

Hybrid: Employees within 30 commutable miles of an F5 office are required to work from the office a minimum of 30 business days per quarter.

Remote: Primarily work from designated home location but can come into an F5 office to work or travel to an offsite location as needed.

Together, we're building a better digital world. Founded in 1996, F5 is a global leader in application delivery and security. Our premier platform helps customers secure and deliver every app, API, and piece of infrastructure across all environments. Backed by over three decades of expertise and 553 patents, our solutions protect against threats while ensuring fast, reliable digital experiences. With over 6,400 employees, we serve more than 23,000 customers in over 170 countries. To continue this work, we need people like you—the best minds in the industry. We're committed to a unique, human-first culture that encourages authenticity, prioritizes diversity and inclusion, and fosters the growth and success of our employees.