Senior Software Engineer - Cloudflare One in London
Senior Software Engineer - Cloudflare One

Senior Software Engineer - Cloudflare One in London

London Full-Time 36000 - 60000 ÂŁ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Design and build scalable software for global network services and security platforms.
  • Company: Join Cloudflare, a leader in building a better Internet with innovative technology.
  • Benefits: Enjoy competitive salary, health benefits, and flexible hybrid work options.
  • Why this job: Make a real impact on millions of users while working with cutting-edge technologies.
  • Qualifications: 5+ years in software engineering with skills in Rust or Go and networking concepts.
  • Other info: Be part of a diverse team committed to inclusivity and professional growth.

The predicted salary is between 36000 - 60000 ÂŁ per year.

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code.

Cloudflare One is a cloud-based network‑as‑a‑service solution that brings together networking, application security, and access controls into a single platform for modern enterprises. It enables organizations to securely connect users, devices, offices, and applications regardless of location, replacing legacy solutions like VPNs and firewalls with a seamless, cloud‑delivered model.

As a Senior Software Engineer on our Network Services and Zero Trust teams, you will contribute to mission‑critical systems powering millions of websites and devices. We’re looking for curious, empathetic engineers who are excited to join us in changing the way networking is done!

Responsibilities:
  • Design, build, and maintain scalable software systems for global network services and Zero Trust platforms.
  • Develop robust, high‑performance networking code using modern programming languages (Rust, Go).
  • Collaborate closely with product managers and cross‑functional engineering teams to deliver new solutions for connectivity, security, and performance.
  • Participate in the design and integration of RESTful APIs and backend systems, especially for asynchronous and distributed architectures.
  • Improve code quality through rigorous documentation, testing, and adherence to industry best practices.
  • Troubleshoot, optimize, and scale distributed systems deployed worldwide.
  • Work at both systems (operating system, networking primitives) and application (user and API‑facing) layers.
  • Contribute to the reliability, security, and scalability of Cloudflare’s infrastructure, including on‑prem/cloud integrations.
Required Qualifications:
  • 5+ years professional software engineering experience.
  • Bachelor’s or Master’s degree in Computer Science or equivalent practical experience.
  • Experience leading projects.
  • Proficiency with Rust, Go, or similar systems‑level programming languages.
  • Solid foundation in networking concepts (TCP/IP, UDP, VPNs, firewalls, DNS, QUIC, HTTP, proxying).
  • Familiarity with design and development of distributed, asynchronous backend architectures.
  • Willingness, curiosity, and enthusiasm to learn new programming languages, technologies, and systems.
  • Clear written and verbal communication skills, especially for cross‑team collaboration.
Preferred Qualifications:
  • Experience with Linux networking primitives, cloud technologies, and virtualization platforms.
  • Prior work on zero trust, cloud security, or enterprise networking products.

This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.

Cloudflare is proud to be an equal‑opportunity employer. We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness.

Senior Software Engineer - Cloudflare One in London employer: CloudFlare

At Cloudflare, we pride ourselves on fostering a dynamic and inclusive work culture that empowers our employees to innovate and grow. With a strong commitment to professional development, we offer numerous opportunities for career advancement while working on cutting-edge technology that makes a real difference in the world. Located in vibrant cities like Austin, Lisbon, and London, our hybrid work model promotes a healthy work-life balance, allowing you to thrive both personally and professionally.
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Contact Detail:

CloudFlare Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Software Engineer - Cloudflare One in London

✨Tip Number 1

Network, network, network! Reach out to folks in your industry on LinkedIn or at local meetups. You never know who might have the inside scoop on job openings or can put in a good word for you.

✨Tip Number 2

Prepare for those interviews like it’s game day! Research Cloudflare’s products and culture, and be ready to discuss how your skills align with their mission. Show them you’re not just another candidate, but someone who truly gets what they’re about.

✨Tip Number 3

Don’t hesitate to ask questions during your interview. It shows you’re engaged and genuinely interested in the role. Plus, it gives you a chance to figure out if the team is the right fit for you too!

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, you’ll get access to exclusive features that can help you stand out from the crowd.

We think you need these skills to ace Senior Software Engineer - Cloudflare One in London

Software Engineering
Rust
Go
Networking Concepts
TCP/IP
UDP
VPNs
Firewalls
DNS
QUIC
HTTP
Proxying
Distributed Systems
RESTful APIs
Cross-Functional Collaboration
Code Quality

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Senior Software Engineer role. Highlight your proficiency in Rust or Go, and any relevant projects you've led. We want to see how you can contribute to our mission!

Craft a Compelling Cover Letter: Your cover letter is your chance to show us your personality and passion for the role. Share why you're excited about working at Cloudflare and how your background makes you a great fit. Keep it concise but impactful!

Showcase Your Projects: If you've worked on any interesting projects, especially those involving networking or cloud technologies, make sure to mention them. We love seeing real-world applications of your skills, so don’t hold back!

Apply Through Our Website: For the best chance of getting noticed, apply directly through our website. It’s the easiest way for us to track your application and ensure it reaches the right team. We can’t wait to hear from you!

How to prepare for a job interview at CloudFlare

✨Know Your Tech Stack

Make sure you’re well-versed in the technologies mentioned in the job description, especially Rust and Go. Brush up on your networking concepts like TCP/IP and VPNs, as these will likely come up during technical discussions.

✨Show Your Problem-Solving Skills

Prepare to discuss past projects where you tackled complex problems. Be ready to explain your thought process and how you approached challenges, particularly in distributed systems or cloud security.

✨Communicate Clearly

Since collaboration is key at Cloudflare, practice articulating your ideas clearly. Think about how you can explain technical concepts to non-technical team members, as this will demonstrate your ability to work cross-functionally.

✨Ask Insightful Questions

Prepare thoughtful questions about the team dynamics, project goals, and Cloudflare’s mission. This shows your genuine interest in the role and helps you assess if it’s the right fit for you.

Senior Software Engineer - Cloudflare One in London
CloudFlare
Location: London

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