Staff Software Engineer - Workflows & Notifications Platform

Position Overview:

Lumos is seeking a Staff Software Engineer to lead the design and implementation of our next-generation Workflows & Notifications Platform. This role involves building critical infrastructure for real-time, context-aware messaging and task orchestration within our Identity Governance product. You will work cross-functionally to define APIs, establish messaging contracts, and evolve a developer-friendly platform for user communication and governance automation. We are looking for engineers who excel at building infrastructure that enhances team velocity, resilience, and visibility.

About Lumos:

Lumos is building an enterprise-grade AppStore for organizations, simplifying app and access management. Our unified platform tackles the complexities of app and access management by defining relationships between apps, identities, and data.

Why Lumos?

• Rapid Growth: Since launching, our team has grown from 20 to ~100 people, and our customer base has 10x'ed, serving companies like GitHub, MongoDB, and Major League Baseball.
• Strong Backing: We are backed by renowned investors including Andreessen Horowitz (a16z), Scale, Neo, Greg Brockman (President at OpenAI), and Phil Venables (CISO at Google), having raised over $65 million.
• Impactful Culture: Join an early-stage company where you have significant influence on the company's trajectory. We are committed to our people and our core values.

Responsibilities:

• Lead the development and enhancement of Lumos’s event-driven notifications and workflow orchestration systems, ensuring scalability, extensibility, and reliability for features like access reviews and JIT approvals.
• Own and evolve the core architecture for multi-channel messaging, including delivery routing, retry strategies, escalation paths, and message templating with localization and personalization.
• Partner with product and engineering teams to design developer-friendly APIs and contracts for triggering, previewing, and managing user-facing messages and workflow states.
• Implement infrastructure and tooling for observability, auditing, and delivery guarantees to empower teams building on the messaging and workflow layers.
• Collaborate with platform and infra teams to ensure seamless integration with identity workflows, system events, and service boundaries, prioritizing fault tolerance, idempotency, and high throughput.
• Build and maintain internal tooling, CLIs, and reusable abstractions to enable other engineers to compose, test, and deploy communication workflows efficiently.
• Drive systemic improvements in workflow lifecycle management, supporting delayed tasks, time-based escalations, approval state machines, and SLA-bound execution paths.

What We Value:

We seek engineers with strong systems thinking and curiosity, who can model complex flows and edge cases. You will thrive if you enjoy designing clean abstractions, collaborating across teams, and creating tools that simplify communication and orchestration.

Requirements:

• 5+ years of experience as a backend or platform engineer.
• Direct experience building event-driven systems.