Senior Software Engineer, Tools and Application Services

Cloudflare, San Francisco, CA

Help us build a better Internet

About Us

At Cloudflare, we have our eyes set on an ambitious goal: to help build a better Internet. Today, Cloudflare runs one of the world’s largest distributed networks that powers more than 1.5 trillion pageviews each month across 5 million Internet properties. More than 10 percent of all global Internet requests flow through Cloudflare’s network. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code.

Our customers range from Fortune 500 companies and nonprofits to small businesses and budding entrepreneurs. Every day, about 12,000 new customers sign up. We’re working to create a faster, more secure, and more reliable experience for anyone online and given the scale at which we operate, our mission is big. Our team is hard at work shaping the future of the Internet by solving some of its toughest challenges. Come join us.

About the Department

Cloudflare’s Engineering Team builds and runs the software that handles about 10% of HTTP requests on the Internet today. We also build and run the internal tools that builds and runs our software. The Engineering Team is split into two groups: one handles product development and the other handles operations. Product development covers both new features and functionality and scaling our existing software to meet the challenges of a massively growing customer base. The operations team handles one of the world’s largest networks with data centers in 102 cities worldwide.

About the Role

The Senior Software Engineer, Tools and Application Services gets the rare opportunity to engage across every major development team at Cloudflare including distributed networking, security engineering, platform and data infrastructure, and website and applications. As part of the Internal Tools and Application Services team, you work firstly with customer-facing teams to pinpoint inefficiencies in our organization’s processes and design solutions.

Whether it’s closing gaps in our event-logging, creating debugging tools, or road mapping the future of our internal tools and application services ecosystem, the Senior Software Engineer is critical to Cloudflare’s ability to scale our people organization to match the reach of our products.


  • Turn a manual CLI tool into an automated cloud service on our internal compute architecture

  • Design and implement the next generation of our internal APIs

  • Make pull requests against current services to bring them into line with new standards

  • Drive discussion on the pros and cons of our current architecture

  • Write automations for repetitive support tasks

  • Collaborate with peers to write, review, and provide feedback on a technical specification

  • Provide technical oversight and mentorship to more junior team members

  • Partner with Product to provide timelines and cost/benefit analysis to inform the roadmap for Internal Tools and the company overall


  • You have succeed in previous team leadership roles, including accountability for the design of systems and shipping of projects. 

  • You know how the web works. You know HTTP and TCP/IP and what a good API looks like.

  • You are a strong communicator. Explaining complex technical concepts to designers, support, and other engineers is no problem for you.

  • You are familiar with the process of moving applications to a service-oriented architecture. 

  • You can break down complex requirements into steps.

  • You can point to examples of production level code you have architected, written or maintained.

  • You can jump into situations with few guardrails and make things better.

  • You are interested in building products driven by business processes.

  • You’re good at seeking advice in order to make the best decision.

  • You are someone that others enjoy working with due to your technical competence and positive attitude.

Bonus Points

  • Experience with large-scale PHP applications, Apache Kafka or Go programming language.

  • When things break -- and they will -- the eagerness and ability to help fix things.

  • Prior experience with or knowledge of large scale, high volume distributed systems

  • Experience in high growth start-up environments

  • Awareness that the internet is a scary place, so you understand security concepts deeply and can put them into action to protect us and our customers. 

What Makes Us Special

We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet. In 2014, we launched Project Galileo, an initiative through which we partner with global NGOs to identify websites at risk of attack and provide the same state-of-the-art mitigation technology already used by Cloudflare’s enterprise customers--at no cost. Project Galileo equips politically and artistically important organizations and journalists with powerful tools to defend themselves against attacks that would otherwise censor their work.

Additionally, in 2016, we announced our partnership with Path Forward, a nonprofit organization that works with companies to create 18-week positions for mid-career professionals who want to get back to the workplace after taking time off to care for a child, parent, or loved one. With the lofty goal of shaping the future of the Internet, we’re focused on recruiting the best and the brightest, no matter what.

Cloudflare hires the best people based on an evaluation of their abilities and effectiveness.  We don't discriminate against employees on the basis of any other personal characteristic or any classification protected by federal, state or local law.

About Cloudflare

About us Cloudflare is the simplest way to make websites faster, safer and smarter. Millions of websites have signed up for our service, including large enterprises, major consumer destinations, and government agencies. With offices in San Francisco and London, Cloudflare operates a highly-available global network that has security measures built into every layer and regularly clocks in lightning-fast speeds. We're on a mission to build a better web - and we need smart, talented people to join our team. Our team works on the forefront of leading technologies including nginx, Go and Lua programming languages. We're a strong supporter of the open source community and regularly share our technology learnings at https://blog.cloudflare.com.

Want to learn more about Cloudflare? Visit Cloudflare's website.