Full-Time

Founding Designer

Onyx

Onyx

11-50 employees

AI-powered mobile trainer with form feedback

Compensation Overview

$186.8k - $196.1k/yr

San Francisco, CA, USA

In Person

Category
UI/UX & Design (2)
,
Required Skills
Agile
Usability Testing/Engineering
Wireframe
Figma
Sketch
Graphic Design
HTML/CSS
Requirements
  • Bachelor's degree in Human Computer Interaction, Interaction Design, Computer Science, Information Science, or a related field, and five years of experience in the job offered or a related occupation.
  • Position requires 5 years of experience in the following: ● Using design tools, including Figma, Sketch, or Framer. ● Experience creating wireframes, interactive prototypes, and visual design assets for web applications and related platforms. ● Applying user-centered design principles, including user research, requirements gathering, and usability testing. ● Experience with responsive design, web accessibility, and basic front-end technologies including HTML/CSS.
  • Additionally, the position requires 3 years of experience in the following: ● Experience leading design projects in an Agile environment, including collaborating with cross-functional stakeholders and working with design systems.
Responsibilities
  • Design websites and digital user interfaces to establish the company’s design vision to deliver user-centered digital experiences across products and platforms.
  • Design, test, and improve interfaces and functionality based on user and business requirements to maximize usability and enhance engagement.
  • Build scalable design systems to ensure consistency, efficiency, compatibility, and accessibility across websites and digital products.
  • Develop and maintain cohesive brand identity elements and graphics that align with business goals and enhance overall user engagement.
  • Collaborate across product, engineering, and marketing, and other functions to ensure cohesive and high-quality design execution across customer-facing digital platforms.

Onyx is a mobile AI-powered personal trainer for at-home workouts. It uses the smartphone camera to track movements, automatically counts reps, and provides real-time feedback on form to prevent injuries and improve effectiveness. It offers personalized workout plans aligned with goals like strength, muscle building, or weight loss, and it tracks progress over time. Its differentiator is real-time form correction and rep counting through computer vision, combined with integrated coaching and progress tracking in one app to support safer, more effective workouts.

Company Size

11-50

Company Stage

Seed

Total Funding

$10.1M

Headquarters

San Francisco, California

Founded

2023

Simplify Jobs

Simplify's Take

What believers are saying

  • Private leaderboard groups with friends boost user engagement significantly.
  • Lifetime subscriptions grant unlimited access to all workouts and tracking.
  • Real-time competition via game-like matchmaking drives retention higher.

What critics are saying

  • Apple Fitness+ AI form correction locks users into ecosystem within 6-12 months.
  • Google Fit pre-installs Gemini rep counting on 2B+ Android devices in 9-15 months.
  • OpenAI GPT-5 API commoditizes camera form correction for competitors in 6-12 months.

What makes Onyx unique

  • Onyx uses smartphone camera for 3D motion capture to count reps accurately.
  • Provides real-time form correction to prevent injuries during home workouts.
  • Offers personalized programs for strength, muscle building, and weight loss.

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People at Onyx who can refer or advise you

Benefits

Remote Work Options

Flexible Work Hours

Unlimited Paid Time Off

Paid Vacation

Health Insurance

401(k) Retirement Plan

401(k) Company Match

Wellness Program

Mental Health Support

Conference Attendance Budget

Professional Development Budget

Stock Options

Company Equity

Parental Leave

Family Planning Benefits

Fertility Treatment Support

Adoption Assistance

Phone/Internet Stipend

Home Office Stipend

Relocation Assistance

Tuition Reimbursement

Professional Certification Support

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

-6%

2 year growth

29%
AiThority
Mar 13th, 2025
Onyx Raises $10 Million To Help Teams Find Knowledge Faster with Open Source AI Agents

Onyx, the first AI deep research agent designed for the workplace, announced today a $10M seed round of funding.

The Business Journals
Apr 3rd, 2024
Here's what you need to know about Y Combinator's 2024 winter batch demo day

Y Combinator seeded more than 250 companies in its current winter batch, which leans heavily into AI. One particular AI subcategory has nearly tripled over the past year.