# Member of Technical Staff, Digital World Engineer at Hark

- Company: Hark
- What the company does: At Hark, we are building the most advanced personal intelligence in the world.
- Company website: https://hark.com
- Type: Startups
- Level: Senior
- Location: San Jose
- Work setup: On-site
- Pay: $170K to $400K base salary per year (USD)
- Posted: 2026-09-29
- Apply by: 2026-11-23
- Apply: https://job-boards.greenhouse.io/hark/jobs/4423663009?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/hark-member-of-technical-staff-digital-world-engineer/

## About the role

At Hark, you'll lead the development for the foundation of agentic reinforcement learning (RL) environments: the digital worlds in which AI agents learn to use software, navigate complex workflows, and act on their surroundings. Our ambition is to simulate the breadth and complexity of the internet, connecting websites, apps, services, and artifacts into rich, stateful environments, with the potential to evolve dynamically over time. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Strong full-stack engineering skills, with experience building applications across frontend interfaces, backend services, APIs, and data models
- Experience with stateful backend or distributed systems, including databases, queues, caching, concurrency, consistency, and failure recovery
- Strong algorithms and systems fundamentals. You can profile complex workloads, identify bottlenecks, and validate performance improvements without compromising correctness
- Ability to design clear, reusable APIs and abstractions that make complex environments easy for researchers and engineers to integrate, extend, and operate
- Careful debugging and testing habits, with attention to application fidelity, state transitions, reproducibility, and failures that can silently corrupt results
- Creativity and ownership in ambiguous problems. You can turn real software behavior into working simulations, collaborate closely with researchers, and learn the agent and RL systems your environments support

Tags: Computer Use Agents

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/hark-member-of-technical-staff-digital-world-engineer/