InternFlow

Greenhouse ·

full-time

Systems Engineer - Data Security

Cloudflare · Hybrid

Cloudflare operates a massive global network designed to improve the performance and security of internet properties. As a Systems Engineer focused on Data Security, you will be responsible for developing and maintaining products that provide customers with visibility into their cloud and SaaS security posture, as well as network traffic trends. Your day-to-day work will involve building new functionality into APIs and distributed systems, ensuring the high performance and reliability of services that process millions of data points daily. You will work with a technology stack that includes Go, Python, Typescript, Kubernetes, Postgres, Kafka, and various cloud infrastructure providers. This role is well-suited for engineers with at least three years of experience in building scalable software systems who are passionate about cybersecurity. The ideal candidate possesses strong debugging and optimization skills, a curiosity for learning new technologies, and the ability to collaborate effectively within a team environment. Experience with frontend development, third-party API integrations, or previous work on security-focused products is considered an advantage.

systems engineerdata securitygopythondistributed systemsapi developmentcloud securitysoftware engineeringkubernetes

About Us 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. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. What you’ll do In this role, you’ll help build and maintain Data Security products as a Software Engineer. These products empower customers to gain deep visibility into Cloud/SaaS security opportunities and into trends in their network traffic and product use. As an engineer on the team, you will focus on building new functionality into our APIs and distributed code while ensuring the performance and reliability of our services which ingest millions of data points each day. You’ll be joining a team of bright, knowledge-seeking engineers who are truly missionaries in solving the security and network visibility challenges for our customers. Technologies we use: Products are written in Go, Python, and Typescript. Code runs on Kubernetes, Cloudflare Workers, AWS, GCP, Azure. We utilize Postgres as our data store, Redis as our cache, and Kafka as our message broker. Our frontend is written in Typescript and React. For service monitoring we use Prometheus and Grafana. For service logging we use Elasticsearch and Kibana. For product analytics we use Clickhouse and BigQuery. Examples of desirable skills, knowledge, and experience: 3+ years of professional experience building and managing reliable and performant software systems at scale, preferably with technologies like: Go, Python, Postgres Passion for making the digital world a more secure place Excellent debugging and optimization skills Willingness, curiosity, and enthusiasm to learn new programming languages, technologies and systems Strong interpersonal and communication skills. Caring and empathy are coveted traits here! Bonus Frontend programming experience in Typescript/Javascript Previous experience working with third-party API integrations Previous experience working on security products What Makes Cloudflare 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. Project Galileo : Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost. Athenian Project : In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states. 1.1.1.1 : We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers. Sound like something you’d like to be a part of? We’d love to hear from you! Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs. More details about this will b

RoleSystems Engineer - Data Security
CompanyCloudflare
LocationHybrid
Typefull-time
CompensationNot disclosed
Posted2026-10-08
DeadlineRolling

Typical process for this type of role

A general guide — the exact steps for this specific listing may vary; check the original posting for details.

  1. 1ApplicationSubmit your resume through the apply link.
  2. 2ScreeningRecruiter reviews your background against the role.
  3. 3AssessmentA technical test, assignment, or coding round, depending on the role.
  4. 4Interview(s)One or more rounds with the hiring team.
  5. 5OfferOffer letter with compensation and start date.

Before you apply

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Systems Engineer - Data Security at Cloudflare: frequently asked questions

What is the salary for this role?
Cloudflare has not stated compensation in the listing. Check the original posting or ask during the application process.
Is the Systems Engineer - Data Security position remote, hybrid or onsite?
The listing gives Hybrid as the location and does not state a work mode.
What is the application deadline?
Cloudflare has not listed a fixed deadline, so apply early in case the opening is filled.
How do I apply for the Systems Engineer - Data Security role?
Use the Apply button on this page. It opens the original listing on boards.greenhouse.io, where you submit your application with the company.

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