Member of Technical Staff - Design Eng

TrajectorySan Francisco, California

Apply with Sonara

Automate your job search with Sonara.

Submit 10x as many applications with less effort than one manual application.¹

Reclaim your time by letting our AI handle the grunt work of job searching.

We continuously scan millions of openings to find your top matches.

Overview

Schedule

Full-time

Career level

Senior-level

Remote

On-site

Benefits

Career Development

Job Description

As a Design Engineer at Trajectory, you will craft the product experience that makes continual learning legible and intuitive.

You will own the visualization, interaction, and developer experience surfaces that help customers understand, debug, and trust continually improving models. This includes trajectory visualization, evaluation workflows, monitoring dashboards, and the core product interfaces that sit on top of our leading RL infrastructure.

You’ll work directly with the founders and industry-leading design partners (Series B+ AI vertical product companies) to translate frontier RL systems into a clean, developer-first product experience. You will help define the visual language, interaction patterns, and product philosophy of Trajectory.

We are building the interface for continual learning. This role sets that bar.

Note: Some travel may be required - we work closely with design partners across the world.

Required Qualifications

Strong frontend or design engineering experience (TypeScript/React or similar)
Experience building polished, production user interfaces
Strong product taste and clear opinions about what makes software feel great - with the craft to back it up
Experience building AI-powered products or agent systems - you actively experiment with new frameworks for fun!

Preferred

Experience building data visualization or complex technical UIs
Experience with observability or debugging interfaces
Background at high-craft product companies or developer tooling startups
Experience working closely with designers or operating as a design-minded engineer

About Trajectory

Trajectory is a research and product lab creating the platform for continual learning.

AI is the most capable software ever built, and the least able to learn. Every valuable correction and edit that happens in a product evaporates at the next session. A few teams have closed this gap by hand-coupling their models to their products: Composer, Claude Code, Windsurf SWE-1.

Trajectory is the first scalable approach for every company: our platform unlocks the signal already sitting in product use, so companies can continuously post-train large-scale agentic models that outperform the frontier. Working with leading AI companies, including Decagon, Clay, Harvey, Mercor, and Rogo.

Founded by researchers from Deepmind, OpenAI, Meta, Apple, Amazon, and Scale. $15M led by Conviction, with Fei-Fei Li, Jeff Dean, and founders of Notion, Braintrust, Modal, Hugging Face, and Dropbox.

Automate your job search with Sonara.

Submit 10x as many applications with less effort than one manual application.

Apply with Sonara Apply manually

FAQs About Member of Technical Staff - Design Eng Jobs at Trajectory

What is the work location for this position at Trajectory?

This job at Trajectory is located in San Francisco, California, according to the details provided by the employer. Some roles may also include multiple work locations depending on the requirement.

What pay range can candidates expect for this role at Trajectory?

Employer has not shared pay details for this role.

What employment applies to this position at Trajectory?

Trajectory lists this role as a Full-time position.

What experience level is required for this role at Trajectory?

Trajectory is looking for a candidate with "Senior-level" experience level.

What benefits are offered by Trajectory for this role?

Trajectory offers Career Development for this position. Actual benefits may vary depending on the employer's policies and employment terms.

What is the process to apply for this position at Trajectory?

You can apply for this role at Trajectory either through Sonara's automated application system, which helps you submit applications 10X faster with minimal effort, or by applying manually using the direct link on the job page.