# MTS - Agent Harness at Aside

- Company: Aside (YC F25)
- What the company does: The browser built to do real work for you. Backed by Y Combinator.
- Company website: https://aside.com
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco, CA, US
- Work setup: On-site
- Pay: $160K to $300K base salary per year (USD)
- Posted: 2026-09-22
- Apply by: 2026-11-06
- Apply: https://www.ycombinator.com/companies/aside/jobs/hXg7r91-mts-agent-harness
- Page: https://www.1752.vc/careers/jobs/aside-mts-agent-harness/

## About the role

Aside is a personal work agent that does your work for you. We want to make the agent faster and more efficient while improving its ability to use a computer. These goals go hand in hand. We need an engineer who can dig into our agent harness, run experiments, and make it better. Polish our browser automation framework and memory system . You can make everything from the ground up, from the agent loop, compaction, memory to browser automation framework. Here’s an article how we did .

## What they're looking for

- Use your brain. No benchmaxxing or /autoresearch. You read the code and prompts yourself, make changes line by line, and understand why each change helps
- An obsession with optimization. You care about making the agent more capable while reducing latency and cost. You track down wasted tokens and unnecessary steps, and measure whether your changes help
- Systems rigor. You understand how Chrome DevTools Protocol, Playwright, and accessibility trees work, and know how to put them to use
- Platform thinking. You think in primitives, not just features. You build solutions that solve today’s product needs while supporting future use cases
- Proactivity. You create your own tasks. When something breaks or feels below the bar, you propose a solution and ship the improvement as if the product were your own

Tags: Engineering