Responsible for designing and implementing software systems, collaborating with engineers, enhancing features, and working with large-scale data systems.
Available Locations: Austin, TX (Hybrid)
About the Team
Cloudflare's Cloud Email Security (CES) service builds advanced technology focused on the source of 95% of data breaches on the internet: phishing.
Hunting for bad actors on the internet is an intellectual and technical challenge. We hunt at scale with web crawling, machine learning, computer vision, petabytes of data, and a global network of sensors.
All of this technology delivers a comprehensive email, network and web protection layer around each of our customers. Customers know that with Cloudflare CES solution deployed their users won't enable a hacker to gain a foothold that results in a breach of their systems.
Come and join an engineering team that builds extensible, reliable, scalable web-based, and data processing applications that our customers count on every second of the day.
RESPONSIBILITIES
MIN REQUIREMENTS:
PREFERRED:
About the Team
Cloudflare's Cloud Email Security (CES) service builds advanced technology focused on the source of 95% of data breaches on the internet: phishing.
Hunting for bad actors on the internet is an intellectual and technical challenge. We hunt at scale with web crawling, machine learning, computer vision, petabytes of data, and a global network of sensors.
All of this technology delivers a comprehensive email, network and web protection layer around each of our customers. Customers know that with Cloudflare CES solution deployed their users won't enable a hacker to gain a foothold that results in a breach of their systems.
Come and join an engineering team that builds extensible, reliable, scalable web-based, and data processing applications that our customers count on every second of the day.
RESPONSIBILITIES
- Create the product's subsystems and key components by applying up-to-date expertise in Software Engineering to define, design and create world-class implementations.
- Collaborate with other senior engineers to improve the overall system at the architectural, design, and implementation levels.
- Design and implement new features for our cloud-based email gateway solution that empowers Fortune 1000 customers.
- Design and implement forward-looking portions of the system to execute a long-term product vision.
- Work with large scale data systems in both online/streaming and offline/batch fashions
- Design and implement revisions to areas of the system to enhance key features such as performance, reliability, scalability, or add new functionality
MIN REQUIREMENTS:
- ~5+ years of experience designing and implementing software systems
- Advanced ability to design and implement software systems in Java.
- Someone who enjoys security work focused on email detections that identify and protect our users.
- Distributed systems experience in a Unix environment
PREFERRED:
- BS/MS in Computer Science or similar engineering discipline
- Strong software engineering skills and substantial expertise in additional programming and scripting languages: Rust, Python, and shell scripting
- Experience with SMTP
- Significant experience in networking, security, cryptography, malware analysis, data analysis, high-reliability clusters, statistics
- Detailed understanding of object-oriented design practices.
- Expert who specializes in big data analysis and design and construction of large-scale multi-tier systems using open-source technologies
- Recent development or architectural leadership experience with large-scale data systems, streaming analytics.
- Experience with continuous integration and delivery environments and agile methodologies.
- Experience developing, deploying, maintaining applications using public cloud providers (AWS/GCP/Azure)
Top Skills
AWS
Azure
GCP
Java
Python
Rust
Smtp
Unix
Cloudflare Denver, Colorado, USA Office
Denver, Colorado, United States, 80014
Similar Jobs at Cloudflare
Cloud • Information Technology • Security • Software • Cybersecurity
The Senior Administrative Assistant will support leaders by managing calendars, coordinating travel, preparing reports, and assisting with projects and events.
Cloud • Information Technology • Security • Software • Cybersecurity
As a Principal Enterprise Architect, you will lead complex projects, analyze the existing architectural landscape, and design scalable solutions to improve operational efficiency.
Top Skills:
Cloud ComputingSystem Architecture
Cloud • Information Technology • Security • Software • Cybersecurity
As a Senior Customer Solutions Architect, you'll engage with strategic customers, provide technical leadership, lead solution discussions, and mentor teams while contributing to industry thought leadership.
Top Skills:
Cloud NetworkingCybersecurityNetworking ProtocolsWeb Infrastructure
What you need to know about the Colorado Tech Scene
With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.
Key Facts About Colorado Tech
- Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3
- Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
- Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
- Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
- Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute

