Actively AI · 1 day ago
Senior / Staff Software Engineer (AI Agents)
San Francisco, CA
Full-time
Onsite
Senior Level, Lead/Staff
$180K/yr - $220K/yrActively AI is focused on building superintelligent machines for Enterprise GTM organizations to enhance productivity. The Senior/Staff Backend Engineer will architect and develop large scale systems that enable AI agents to operate effectively, ensuring high reliability and integration with real-time data.
Artificial Intelligence (AI)Generative AIMachine LearningMarketing AutomationSales AutomationSales Enablement
Responsibilities
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 — continuously and at massive scale
Develop orchestration and workflow primitives for agent and human collaboration. Translate nuanced, long-running real-world scenarios — multi-step workflows, customer-specific rules, and human-in-the-loop actions — into well-structured agent behaviors that are predictable, maintainable, and easy to extend
Ensure reliability through good modeling. Design agents with clear state transitions, strong data contracts, and explicit guarantees — embedding observability and fault tolerance into their design so they behave correctly over millions of events and long-lived sessions
Continuously evolve agent design. Simplify complex behavior through better abstractions, documentation, and testing — ensuring agents remain reliable and comprehensible as capabilities, data volume, and concurrency grow
Qualification
Required
Experienced systems builder. You've designed and operated large-scale, event-driven backend systems — modeling complex, long-lived workflows into clear, maintainable, and reliable software
Strong backend engineer. Deep Python expertise and solid fundamentals in concurrency, transactions, and performance tuning
Architectural thinker. You reason about trade-offs between consistency, latency, fault-tolerance, and cost — building for correctness and adaptability
Product-minded. You care about usability, developer experience, and how system design translates into real customer value
Fluent in modern infrastructure. Familiar with streaming and workflow technologies (Kafka, Pub/Sub, Temporal-like), and data stores across relational, in-memory, and vector paradigms
Collaborative and pragmatic. You value iteration, clear communication, and helping others move faster without sacrificing quality
Curious about AI systems. You're excited by how LLMs, retrieval systems, and agents can transform enterprise software — and you want to build the infrastructure that makes it real
Preferred
Built or contributed to LLM-powered or agent-driven systems — such as real-time inference pipelines, context and retrieval systems, or human-in-the-loop orchestration
Experience scaling mission-critical systems with high reliability requirements (payments, messaging, logistics, orchestration)
Comfort working in fast-moving, high-ambiguity environments where you balance big vision with tactical delivery
Benefits
🚀 Competitive Early-Stage Equity
⚕ Health, Dental, Vision Coverage
💡 Unlimited PTO + Recharge Days
🍽️ Catered Lunch on Tuesday & Friday w/ Dinners every day!
🍿 Fully Stocked Kitchen
💻 Cutting-Edge Tech & Tools
🌴 Annual Off-sites & Monthly Events
🚆 Commuter Benefits
🏢 Cozy Office in SF
Company
Actively AI
GTM Superintelligence for Revenue Teams. Helping enterprises increase qualified pipeline, revenue, and win rates with more precise outbound.
Founded in 2021
51-200 employees
H1B Sponsorship
Actively AI has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2024 (2)
2023 (3)
Funding
Current Stage
Growth StageTotal Funding
$22.5MKey Investors
Bain Capital Ventures
2025-04-02Series A· $17.5M
2023-01-01Seed· $5M
Leadership Team
Mihir Garimella
Co-Founder & CEO
Recent News
vcnewsdaily.com
2025-04-03
FoundersToday
2025-04-03
Company data provided by crunchbase