Atmail
Are you someone who can spot patterns others miss? Do you know what Regex and pattern matching means? We’re looking for a highly analytical Cyber Security Engineer - Email with strong expertise in regular expressions (PCRE, RE2, Hyperscan or similar) to help us detect, prevent, and respond to evolving abuse across large-scale platforms. While this role sits within email security, we’re open to talent from any industry —as long as you’ve applied regex and pattern-matching to solve real-world problems at scale. The Role You’ll play a critical role in protecting our platform from spam, phishing, malware, and emerging abuse vectors . This is a hands-on, operational role where you’ll design and optimise detection logic, monitor live systems, and continuously adapt to new threats. Working closely with technical teams, you’ll help ensure a secure, high-quality experience for end users while contributing to ongoing improvements in our anti-abuse capabilities. What You’ll Be Doing Work closely with the Team Lead, Email Specialists to ensure Atmail lives up to its promise to customers with respect to providing a secure email service. You will be instrumental monitoring systems for False Positives, False Negatives and adjusting rules to compensate for the changing attacks. Provide guidance, resolve technical issues, and facilitate technical communication to assist Atmail’s customer support staff to improve the customer experience. Work closely with other members of the Email Specialists team when new anti-abuse features are needed or being implemented As part of the Email Specialists team, engage and contribute to the formation of operational plans and be a contributing member in the decision-making processes to drive our technology forwards. Provide technical guidance and facilitate technical communication between stakeholders to improve the product, service and customer experience. What We’re Looking For Strong, hands-on experience with regular expressions (PCRE, RE2, Hyperscan or similar) Experience building or tuning pattern-matching, filtering, or detection systems Proven ability to analyse large datasets/logs to identify anomalies or threats Comfortable working in Linux/UNIX environments using command-line tools Strong problem-solving mindset and ability to work autonomously in a remote setup Excellent communication and collaboration skills Essential Experience Experience in anti-abuse, messaging security, or large-scale operational environments Background in creating and tuning filtering or rule-based systems Strong understanding of log analysis and signal-based detection Familiarity with: Filtering tools (e.g. Rspamd, SpamAssassin) Blocklists/reputation systems (e.g. Spamhaus, Abusix) Proficient with standards such as SMTP, DNS, SPF, DKIM, DMARC Minimum 10+ years professional experience, , including at least 5 years in hands-on anti-abuse, messaging security, or large-scale email operations role A Bachelor (or higher) degree in a technology field, or equivalent experience Nice to Have Scripting experience (Python, Bash, Go, etc.) Cloud experience (AWS or similar) Email infrastructure or server configuration experience Background in trust & safety or abuse prevention teams Experience working in distributed/global teams Why Join Us? Fully remote with flexibility across APAC Work on real-time, large-scale detection challenges High-impact role protecting users from evolving threats Collaborative, technical environment focused on innovation Strong emphasis on work-life balance and autonomy Who This Role Suits You might come from: Email infrastructure or deliverability Cybersecurity / SOC / threat detection Data engineering / log analysis Fraud, risk, or abuse detection Any role where you’ve built pattern recognition systems using regex If you’ve used regex to solve complex, real-world problems at scale , we want to hear from you.
Atmail
