Senior Software Engineer - Email Security Platform(Golang)

Role Summary:

We are building a production-grade email protection platform that processes email events in near real time, integrates multiple detection engines, and executes policy-driven actions across major email providers.

This role is for a senior engineer who can own backend systems, data flow, and long-term correctness of a security-critical platform, while working closely with an existing DevOps function.

Roles and Responsibilities:

Email Security and Detection

• Work with Rspamd as a core detection engine
• Consume scores, symbols, metadata, and verdicts
• Apply real email security fundamentals
• DKIM
• SPF
• DMARC
• Header and MIME analysis
• Help evolve support for multiple scanners and signal sources

Event-Driven Backend Systems

• Build and evolve high-throughput services in Go
• Work with existing Redis Streams or queue-based pipelines
• Understand ordering, retries, idempotency, and backpressure
• Ensure safe and predictable behaviour under failure

State and Data

• Work with PostgreSQL for durable state, cursors, and metadata

• Be deliberate about state ownership and data boundaries
• Avoid unnecessary coupling between services

APIs and Dashboards

• Design and maintain versioned APIs for frontend dashboards and internal tools
• Expose detections, verdicts, actions, and audit trails
• Maintain clear schemas and backward compatibility

AI and External Services

• Integrate with AI or ML services using existing pipelines
• Safely send structured email data and consume results
• Handle latency, failures, and partial responses
• Apply guardrails and deterministic fallbacks

Kubernetes and Production

• Develop services that run on Kubernetes
• Work closely with DevOps on deployments, scaling, and operations
• Be able to debug production issues without owning the infra stack
• Care deeply about observability and reliability

Email Provider Integrations

• Work with existing Microsoft Graph API integrations
• Work with existing Google Workspace or Gmail integrations
• Understand provider behavior, limits, and edge cases
• Help evolve integrations without re-architecting them

Technical Leadership

• Own backend architecture and technical direction
• Review code with a security and correctness mindset
• Mentor engineers on distributed systems and defensive design
• Push back on changes that compromise long-term stability

Required

• Must have 8 years total experience(minimum), at least 4 years in Go
• Strong experience building backend systems in Go
• Experience working with event-driven or streaming architectures
• Hands-on experience with Redis or similar queue systems
• Experience designing and maintaining production APIs
• Experience integrating AI or ML services in production

Strong Advantage

• Email security or phishing detection experience
• Hands-on experience with Rspamd