Senior / Staff Software Engineer (AI Agents)
AI summary of the role
Senior/Staff Backend Engineer to architect and build large-scale, event-driven, fault-tolerant infrastructure powering Actively's GTM AI agents.
What you’ll do
- Design and build the agents that power Actively’s platform, modeling complex customer workflows into reliable agent logic over streaming data at massive scale.
- Develop orchestration and workflow primitives for agent and human collaboration, translating multi-step scenarios into predictable, maintainable agent behaviors.
- Ensure reliability through good modeling with clear state transitions, data contracts, and fault tolerance for millions of events and long-lived sessions.
- Continuously evolve agent design by simplifying complex behavior through better abstractions, documentation, and testing.
What you’ll bring
- Deep Python expertise and solid fundamentals in concurrency, transactions, and performance tuning.
- Experience designing and operating large-scale, event-driven backend systems with complex, long-lived workflows.
- Familiarity with streaming and workflow technologies (Kafka, Pub/Sub, Temporal-like) and data stores across relational, in-memory, and vector paradigms.
- Ability to reason about trade-offs between consistency, latency, fault-tolerance, and cost.
Technologies
Python · Kafka · Pub/Sub · Temporal · LLMs · vector databases · event-driven architecture · workflow orchestration
About Actively AI
SaaS platform deploying per-account AI agents that research accounts and surface revenue opportunities 24/7 for enterprise sales teams.
Series B · 50–200 people
Source and classification
Production engineering · Evidence for this classification:
Senior/Staff Backend Engineer to architect and build large scale systems that power Actively’s GTM AI agents. These agents continuously reason over real-time customer and external data, generate next-best actions, and execute them reliably across systems with humans in the loop. In this role, you’ll design the scalable, event-driven, and fault-tolerant infrastructure that makes this intelligence possible — integrating with LLMs, orchestrating complex workflows, and ensuring every action happens with high reliability. This is a foundational role, shaping how production-grade agents operate at enterprise scale. What You’ll Do Design and build the agents that power Actively’s platform. Model complex customer and business workflows into clear, reliable agent logic that reasons over streaming data, maintaining state, decides what to do next, and acts consistently across systems —How jobs are selected
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