Software Engineer II – Inline Mailflow

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🕒 May 28

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Abnormal Security

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501 - 1000 employees

Abnormal provides total protection against the widest range of attacks including phishing, malware, ransomware, social engineering, executive impersonation, supply chain compromise, internal account compromise, spam, and graymail.

📋 Description

• Design and implement core components of the SMTP relay harness, including Mail Transfer Agent (MTA) infrastructure, scalability, IP management, encryption, and DMARC support, working from conception through production operation. • Co-build the production relay alongside existing infra engineers, ramping toward full ownership of defined services as the product matures through Q3 and into EA. • Collaborate with PMs and Solutions Architects to translate customer requirements into reliable, opinionated relay configurations that support inbound and outbound use cases. • Own and operate tier-0 mail flow services that handle high volumes of enterprise email at production SLA, participating in on-call rotations and driving continuous reliability improvements. • Contribute to technical design discussions on how the relay integrates with existing inline products (outbound DLP, behavioral outbound, misdirected email), helping define the architecture of the broader Mail Flow platform. • Raise the bar of engineering excellence by contributing to knowledge sharing, runbooks, and professional development within the team.

🎯 Requirements

• BS degree in Computer Science, Applied Sciences, Information Systems, or a related engineering field. • 3+ years of backend software development experience with distributed systems, designing and building production services. • Hands-on experience with our stack: Go and/or Python. • Experience building features and components from scratch and owning them in production, balancing feature development with operational work. • Comfortable with ambiguity and 0-to-1 projects where you help shape requirements alongside product and engineering stakeholders. • Experience working with distributed teams; proficient in asynchronous and written communication.

🏖️ Benefits

• Equal opportunity employer