Model Designer

Model Designer (Contingent) - Ads / AI Experiences

Client: Large Fortune 500 Enterprise
Duration: 6-month contract
Rate: ~$70-$75/hourly
Team: MAIBA - Business Experiences (Content Design / Model Design)
About the Role
We're looking for a Model Designer to help shape the next generation of AI-driven Ads experiences for a large Fortune 500 enterprise client.
This is a unique opportunity at the intersection of content design, conversational UX, and AI systems. You'll define what high-quality AI interactions look like-and translate that vision into the model instructions that drive real behavior.
This role blends strategy and execution. You won't just follow specs-you'll help create them, using evaluation data and experimentation to continuously improve how the model performs.
What You'll Do
Define and evolve conversation design frameworks (tone, structure, clarity, actionability)
Translate design principles into system prompts and model instructions
Iteratively improve language-driven model behavior (responses, follow-ups, edge cases)
Use evaluation data (judge scores, testing results) to guide design decisions
Partner with Product, Engineering, and Design to align on quality standards
Test and dogfood model outputs to catch issues early
Work in a 4-week sprint cycle, continuously refining and improving performance
What We're Looking For
Strong experince in content design, UX writing, or conversational design
Experience working with LLMs or prompt design (writing and iterating on prompts)
Ability to think end-to-end about user conversations, not just individual responses
Comfortable operating in ambiguity and defining "what good looks like"
Experience using data or evaluation signals to iterate and improve outcomes
Strong cross-functional collaboration skills
Nice to Have
Experience in Ads or performance marketing
Experience in AI conversation design or model design
Familiarity with information architecture or structured content systems
Why This Role
You'll help define an emerging discipline-model design-inside a large-scale enterprise environment. Your work will directly impact how AI systems communicate with advertisers, shaping both the user experience and model behavior at scale.
Job Type & Location
This is a Contract position based out of Menlo Park, CA.
Pay and Benefits
The pay range for this position is $75.00 - $75.00/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
Medical, dental & vision
Critical Illness, Accident, and Hospital
401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available
Life Insurance (Voluntary Life & AD&D for the employee and dependents)
Short and long-term disability
Health Spending Account (HSA)
Transportation benefits
Employee Assistance Program
Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a fully remote position.
Application Deadline
This position is anticipated to close on Jun 30, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.