AI Phone - Senior Agent Runtime Engineer
Remote · USFull-timePosted todayStill listed today
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At a glance
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Job overview
Bjak is building AI-native applications and devices that bring intelligence into everyday conversations, coordination, and workflows. The Senior Agent Runtime Engineer will build execution infrastructure for AI agents, including runtime and orchestration components, tool-calling interfaces, and support for multi-step tasks. The role also focuses on reliability, observability, model-provider integration, and efficient inference.
Skills & qualifications
Skills
Full job description
About We are reimagining the phone. AI phones need to be proactive, intuitive, intelligent and low cost. This is a mission critical for rest of the world to adopt intelligence. There are over 5 billion people using everyday applications such as email, messaging, notes, tasks, and calendars, yet most are not AI-native. Our mission is to build proactive applications and devices that bring intelligence into daily conversations, coordination and workflows, with minimal prompting. Focus: Building the actual execution infrastructure for AI agents.
Responsibilities
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Implement agent runtime and orchestration components.
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Build tool-calling and execution interfaces.
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Support multi-step and long-running task execution.
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Manage task state, execution history and asynchronous workflows.
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Implement error handling, retries and recovery mechanisms.
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Integrate multiple model providers.
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Build observability and tracing for agent execution.
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Optimize latency, reliability and inference costs.
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Work with context and memory components to provide relevant information to agents.
Requirements
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Strong backend engineering experience.
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Experience with distributed systems and asynchronous workflows.
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Experience integrating LLMs into production applications.
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Strong API and service architecture knowledge.
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Experience with queues, state management and observability.
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Good understanding of tool calling and structured outputs.
Nice to have
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Production agent framework or custom agent runtime experience.
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Experience with Temporal or similar workflow orchestration systems.
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Experience with model routing and inference optimization.
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Experience with AI evaluation and tracing.
How this job compares
Set against the 3,203 open Backend Engineer jobs on Olive Jobs, counted November 4, 2026.
- Pay
- This postingNot listed
- US median$150–225K/yr2,558 salary ranges
- US median$60–70/hr31 hourly ranges
- Openings
- Olive Jobs lists 3,203 open Backend Engineer jobs across the US. 14% of them nationwide are listed as remote or flexible.
- Experience
- Backend Engineer postings that state a minimum ask for 5 years of experience at the median; the middle half ask for 3 to 6 years (2,644 postings).
- Education
- 802 of the 3,203 open Backend Engineer jobs (25%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on November 4, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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