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Member of Technical Staff, Agent Harness

HarkSan JoseProduct Engineering
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Salary
$170K - $400K USD
Job type
Full-time
Posted
23 Mar 2026
Status
Open · checked 8d ago

About this role

This is a full-time Member of Technical Staff, Agent Harness role based in San Jose, perfect for backend engineers with extensive experience in distributed systems and AI pipeline integration. Hark is seeking a skilled professional to engineer the core infrastructure that powers advanced, multimodal artificial intelligence.

Role Overview

The Member of Technical Staff position focuses on designing and implementing robust backend systems that drive Hark's AI agent technology. Operating within a compact team in San Jose, this high-ownership role requires close collaboration with model researchers and platform engineers to create fast, reliable, and production-grade software.

Key Responsibilities

Design and develop high-concurrency backend services dedicated to agent orchestration, real-time streaming, and tool execution.
Engineer resilient failure-handling mechanisms, retry logic, and advanced state management for extended agentic workflows.
Create foundational APIs and services, including memory retrieval platforms and sandboxed execution environments.
Optimize the technology stack for high-throughput data processing and low-latency streaming to support smooth user interactions.
Drive features through every stage, ranging from low-level prototyping and architectural design to production deployment and monitoring.
Establish deep system instrumentation and automated evaluation frameworks to monitor overall health and detect model quality regressions.

Requirements

Minimum of 5 years of professional experience developing mission-critical backend systems, with expertise in networking protocols, distributed systems, and concurrency.
Demonstrated success in shipping infrastructure and APIs capable of managing real-world traffic, backed by knowledge of horizontal scaling and operational management.
Practical background in integrating large language models into backend pipelines and managing the failure modes of non-deterministic systems.
High proficiency in at least one systems-level programming language such as Rust, C++, Java, or Go.
Familiarity with cloud-native environments like AWS and GCP, container orchestration, and secure isolated execution sandboxes.
Strong communication skills to effectively discuss complex architectural tradeoffs with cross-functional teams.

Nice to Have

Practical background utilizing WebSockets or gRPC for high-performance streaming applications.
Previous experience working with vector databases, custom memory management systems, or distributed caching.
In-depth familiarity with Kubernetes, serverless execution patterns, or microservices security.
Background in developing developer-oriented software development kits or APIs.

Skills and Tools

Languages: Rust, C++, Java, Go
Infrastructure & Cloud: AWS, GCP, Kubernetes
Concepts: Concurrency, distributed systems, low-latency streaming, microservices, state management

Salary and Benefits

The annual US base salary range for this position spans from $170,000 to $400,000. Compensation is determined by individual factors including relevant skills, knowledge, and experience, with additional compensation components and benefits potentially available.

About the Company

Hark is an artificial intelligence enterprise dedicated to creating proactive, personalized, and multimodal intelligence capable of interacting with the real world through speech, text, vision, and memory. By combining next-generation hardware with advanced intelligence, the organization strives to bridge the gap between humans and machines beyond traditional chat interfaces.

How to Apply

Interested candidates should visit the official Hark careers page to submit an application for this opportunity.

Skills and tech stack

AWSGCPKubernetesJavaRustC++

Questions candidates ask

What is the location of the Member of Technical Staff, Agent Harness role?

The position is located in San Jose.

What is the salary range for this position?

The US base salary range is between $170,000 and $400,000 annually, depending on individual factors such as skills, knowledge, and experience.

How many years of experience are required?

Candidates must have 5+ years of experience building mission-critical backend systems.

What programming languages are required?

Strong experience in at least one systems-level language is required, such as Rust, C++, Java, or Go.

How should I apply for this job?

Applicants should visit the official Hark company careers page to apply.

Ready to apply?

The application is on the official Hark careers page.

Apply on company site