Software Engineer (Backend)

TL;DR

Software Engineer (Backend): Building Abnormal’s next-generation SMTP relay infrastructure with an accent on scalability, IP management, and email security protocols. Focus on designing core MTA components, ensuring production SLAs for tier-0 services, and integrating outbound filtering and DLP enforcement.

Location: Must be eligible to access controlled technology under U.S. export control laws

Salary: $149,200 — $214,500 USD

Company

hirify.global is an AI-powered email security company building a next-generation SMTP relay infrastructure to displace traditional Secure Email Gateways.

What you will do

• Design and implement core components of the SMTP relay harness, including MTA infrastructure, scalability, and DMARC support.
• Build production relays and transition toward full ownership of defined services through the early access phase.
• Collaborate with PMs and Solutions Architects to translate customer requirements into reliable relay configurations.
• Own and operate tier-0 mail flow services, participating in on-call rotations to maintain production SLAs.
• Contribute to technical architecture for the integration of the relay with outbound DLP and behavioral outbound products.
• Drive engineering excellence through knowledge sharing, runbooks, and professional development.

Requirements

• BS degree in Computer Science, Applied Sciences, Information Systems, or a related engineering field.
• 3+ years of experience in backend software development with distributed systems.
• Hands-on proficiency with Go and/or Python.
• Proven track record of building and owning production services from scratch.
• Ability to work effectively with distributed teams using asynchronous and written communication.
• Must be eligible to access controlled technology under U.S. export control laws.

Nice to have

• Solid understanding of email protocols and infrastructure (SMTP, MTA, DNS, SPF/DKIM/DMARC).
• Experience with AWS, Kubernetes, Django, Spark, or Prometheus.
• Familiarity with Secure Email Gateways (SEGs) such as Proofpoint, Mimecast, or Microsoft Defender.
• Knowledge of email deliverability concepts: IP reputation, bulk sending infrastructure, and bounce handling.
• Experience with Docker and containerization.

Culture & Benefits

• Competitive base salary with eligibility for bonus and incentive compensation.
• Equity opportunities in a fast-growing AI-driven security company.
• Comprehensive benefits package.
• Opportunity to work on high-impact 0-to-1 projects within a newly formed team.
• Culture of engineering excellence and continuous reliability improvement.