Cloudflare · 2 weeks ago
Software Engineer - Email Security
Austin, TX
Full-time
Hybrid
Senior Level
5+ years expCloudflare is a company on a mission to help build a better Internet, operating one of the world’s largest networks. They are seeking a Senior Software Engineer for their Cloud Email Security service, focusing on developing advanced technology to combat phishing and enhance email security for customers.
AnalyticsEnterprise SoftwareSecurityWeb Hosting
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
Qualification
Required
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)
Company
Cloudflare
Cloudflare is a web performance and security company that provides online services to protect and accelerate websites online.
1001-5000 employees
H1B Sponsorship
Cloudflare has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (117)
2024 (115)
2023 (66)
2022 (98)
2021 (83)
2020 (37)
Funding
Current Stage
Public CompanyTotal Funding
$2.08BKey Investors
Franklin TempletonFidelityUnion Square Ventures
2025-06-13Post Ipo Debt· $1.75B
2019-09-12IPO
2019-03-12Series E· $150M
Leadership Team
Matthew Prince
CEO & Co-Founder
Lee Holloway
Co-Founder & Lead Engineer
Recent News
2026-01-11
2026-01-11
2026-01-11
Company data provided by crunchbase