ZipRecruiter

Log In

1

Principal Ui Engineer Jobs (NOW HIRING)

Filevine

UI Engineer

San Francisco, CA

$122K - $163K/yr

Role Summary: We're looking for a UI Engineer to focus on execution, polish, and UX quality across the Word add-in and the web app. This role is engineering-first. You won't own UX strategy or define ...

Filevine

UI Engineer

San Francisco, CA · On-site

$122K - $163K/yr

Role Summary: We're looking for a UI Engineer to focus on execution, polish, and UX quality across the Word add-in and the web app. This role is engineering-first. You won't own UX strategy or define ...

KBR

UI Engineer

Beavercreek, OH · On-site

$96K - $128K/yr

Title: UI Engineer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and ...

Epic Games

Lead UI Engineer

Cary, NC · On-site

$57.25 - $73.25/hr

They are seeking a Lead UI Engineer who will be responsible for core UI features and supporting collaborative development to enhance player experiences across Rocket League. Responsibilities : • ...

Gamma

UI Engineer

San Francisco, CA · On-site

$122K - $163K/yr

Gamma is a company focused on building exceptional visual experiences, and they are seeking a UI Engineer to enhance their product's design system and frontend performance. The role involves creating ...

KBR, Inc.

UI Engineer

Beavercreek, OH · On-site

$96K - $128K/yr

Title: UI Engineer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and ...

DyaTech LLC

Sr. UX / UI Engineer

Manhattan, NY · On-site

$103K - $129K/yr

Title: SR UX / UI Engineers. Type of work: On Site. No remote option. Will consider Hybrid after 6 months on site. Travel required? No Duration: 1yr + Start : ASAP Work Authorization: Citizen, s, and ...

Intap

UI Engineer

New York, NY

$113K - $152K/yr

Strong opinions about UI architecture-and the communication skills to build consensus around them * You are a team player. You collaborate effectively with designers, engineers, and product managers ...

Worldscape Technology Inc.

Senior UI Engineer

Redmond, WA · On-site

$130K - $160K/yr

Worldscape is looking for an experienced UI Engineer capable of thriving within a rapid development environment. You will be responsible for implementing and optimizing a high-quality user interface ...

Collabera

UI Developer

Austin, TX · On-site

$49.50 - $64.50/hr

Austin, TX Job Title: UI Engineer Duration: Thru 9/30/16. Strictly contract [at this time]. Description: UI Engineer, Digital and Mobile Development Javascript / React developer. Responsibilities ...

Intap

UI Engineer

Charlotte, NC

$101K - $135K/yr

Strong opinions about UI architecture-and the communication skills to build consensus around them * You are a team player. You collaborate effectively with designers, engineers, and product managers ...

insightsoftware

Senior UI Engineer

$133K - $165K/yr

Job Summary Insightsoftware is seeking a Senior UI Engineer to serve as the front-end technical foundation of the newly established UX team within the Certent Equity Management (CEM) product ...

Taxbit

UI Engineer

Seattle, WA · Hybrid

$110K - $170K/yr

Comfortable operating in product engineering environments where UI quality, reusable patterns, and front-end craftsmanship are important parts of the role. * Bachelor's degree in Computer Science ...

Procom Services

UI Engineer IV

Santa Clara, CA · On-site

$122K - $163K/yr

As Senior UX/UI Mobile Developer you will work directly with our product, design and test teams to develop a platform for creating the most innovative wearable products. You will be working with ...

Job Board

Senior UI Engineer

North, SC

$120K - $150K/yr

As a Senior UI Engineer for the Fleet Manager product, you will play a crucial role in leading the development and architecture of the frontend systems that enable clients to manage a fleet of ...

Taxbit

UI Engineer

Salt Lake City, UT · Hybrid

$110K - $170K/yr

Comfortable operating in product engineering environments where UI quality, reusable patterns, and front-end craftsmanship are important parts of the role. * Bachelor's degree in Computer Science ...

previous page

Showing results 41-60

All JobsPrincipal Ui Engineer Jobs

Principal Ui Engineer information

See salary details

$74K

$147.2K

$212.5K

How much do principal ui engineer jobs pay per year?

As of Aug 10, 2026, the average yearly pay for principal ui engineer in the United States is $147,220.00, according to ZipRecruiter salary data. Most workers in this role earn between $118,500.00 and $173,000.00 per year, depending on experience, location, and employer.

What is the difference between Principal Ui Engineer vs Senior Ui Engineer?

AspectPrincipal Ui EngineerSenior Ui Engineer
Required CredentialsBachelor's/Master's in Design, Computer Science, or related field; extensive experienceBachelor's in relevant field; 3-5 years of experience
Work EnvironmentLeads design projects, mentors teams, influences product strategyDevelops UI components, collaborates with teams, implements designs
Employer & Industry UsageUsed in tech companies, startups, large enterprises for senior design rolesCommon in software development, tech firms, product teams

The Principal Ui Engineer typically holds a higher level of experience, leadership, and strategic influence compared to a Senior Ui Engineer. While both roles require strong UI design and development skills, the Principal focuses on guiding design direction and mentoring, whereas the Senior executes complex UI tasks and collaborates closely with teams.

What is a Principal UI Engineer?

A Principal UI Engineer is a senior-level professional responsible for leading the design, development, and implementation of user interfaces for software applications. They set technical direction, mentor other engineers, and often collaborate closely with product managers and designers to ensure seamless, user-friendly experiences. Principal UI Engineers also help establish best practices, review code, and may be involved in architectural decisions related to frontend technologies. Their deep expertise enables them to solve complex UI challenges and drive innovation within their teams.

How does a Principal UI Engineer typically collaborate with cross-functional teams during a product development cycle?

As a Principal UI Engineer, you will often serve as a bridge between design, product management, and backend engineering teams. You'll participate in architecture discussions, provide technical guidance on UI best practices, and ensure design intent is accurately translated into the final product. Regular collaboration includes code reviews, design critiques, and sprint planning meetings, where you advocate for user experience and front-end performance. This role requires strong communication skills and a proactive approach to resolving cross-team dependencies and technical challenges.

What are the key skills and qualifications needed to thrive as a Principal UI Engineer, and why are they important?

To thrive as a Principal UI Engineer, you need deep expertise in front-end technologies (such as JavaScript, React, or Angular), UI/UX design principles, and a track record of leading complex projects, typically supported by a relevant degree and significant industry experience. Mastery of design systems, version control (like Git), and prototyping tools (such as Figma or Sketch) is essential, and certifications in advanced front-end frameworks can be advantageous. Exceptional leadership, communication, and problem-solving skills help you mentor teams and collaborate effectively with stakeholders. These abilities are crucial for delivering high-quality, scalable interfaces that drive both user satisfaction and business results.
More about Principal Ui Engineer jobs
What job categories do people searching Principal Ui Engineer jobs look for? The top searched job categories for Principal Ui Engineer jobs are:
Principal Ui Engineer jobs near you
Infographic showing various Principal Ui Engineer job openings in the United States as of August 2026, with employment types broken down into 92% Full Time, 2% Part Time, and 6% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $147,220 per year, or $70.8 per hour.

UI Engineer

Filevine

San Francisco, CA

$122K - $163K/yr

Full-time

Re-posted 21 days ago

Job description

Filevine is a Legal AI company delivering Legal Operating Intelligence for the future of legal work. Grounded in a singular system of truth, Filevine brings together data, documents, workflows, and teams into one unified platform—where modern legal work happens with clarity and consistency.
 
Powered by LOIS, the Legal Operating Intelligence System, Filevine connects context across every matter to transform legal operations from reactive to proactive. LOIS reads, understands, and reasons across your data to surface insight, automate complexity, and give professionals the clarity and confidence to see more, know more, and do more. Fueled by a team of exceptional collaborators and innovators, Filevine’s rapid growth has earned AI awards and recognition from Deloitte and Inc. as one of the most innovative and fastest-growing technology companies in the country.

Role Summary:

We’re looking for a UI Engineer to focus on execution, polish, and UX quality across the Word add-in and the web app. This role is engineering-first. You won’t own UX strategy or define workflows from scratch. Instead, you’ll work from clearly defined interaction models and design direction set by the Product Design Engineer and Frontend leads, and make the product feel fast, intentional, and reliable.

You should care deeply about details, understand how AI systems behave at the UI layer, and be comfortable working with streaming states, partial results, and failure modes without papering over them.
Responsibilities
  • Implement high-quality UI across the Word add-in and web app using React and TypeScript
  • Improve interaction quality for AI-driven workflows, including loading states, streaming output, retries, and error handling
  • Reduce UX friction across the product by fixing layout issues, state inconsistencies, spacing problems, and rough edges
  • Apply and extend existing design patterns and component systems consistently
  • Work closely with Product Design Engineers and Frontend Engineers to ensure design intent is preserved in implementation
  • Make AI behavior feel understandable, predictable, and trustworthy at the UI layer
  • Move quickly on UI fixes and improvements without waiting on heavy product or design processes
Qualifications
  • Strong frontend engineering skills with React and TypeScript
  • High standards for UI polish, interaction quality, and visual consistency
  • Comfort working with async systems, streaming data, and non-deterministic states
  • Enough system-level understanding to reason about latency, failures, and partial results
  • Ability to take direction clearly and execute with precision
  • A bias toward fixing what’s broken instead of working around it
  • Experience with complex, user-facing products where UX quality mattered
Nice to Have
  • Experience with AI-powered products or systems with streaming or long-running workflows
  • Experience building for constrained or embedded surfaces like plugins, extensions, or add-ins
  • Familiarity with Microsoft Word add-ins or similar environments
What's In It For You
  • You’ll work on a flagship AI product used daily by legal teams
  • You’ll ship frequently and see your work live in production
  • You’ll collaborate with senior engineers and product leaders in a tight feedback loop
  • You’ll help shape a UI that users actually trust

If you care about clean UI, strong execution, and making complex systems feel simple, we’d like to talk.
Compensation Information: $120,000 - $160,000 base

The base salary range represents the low and high end of the salary range for this position. The total compensation package for this position will be determined by each individual’s location, qualifications, education, work experience, skills and performance. We believe in the importance of pay equity - the range listed is just one component of Filevine’s total compensation package for employees. This position is also eligible for a paid time off policy, as well as a comprehensive benefits package.

Cool Company Benefits:
- A dynamic, rapidly growing company, focused on helping organizations thrive 
- Medical, Dental, & Vision Insurance (for full-time employees)
- Competitive & Fair Pay
- Maternity & paternity leave (for full-time employees)
- Short & long-term disability
- Opportunity to learn from a dedicated leadership team
- Top-of-the-line company swag
 
Privacy Policy Notice
Filevine will handle your personal information according to what’s outlined in our Privacy Policy.
 
Communication about this opportunity, or any open role at Filevine, will only come from representatives with email addresses using "filevine.com". Other addresses reaching out are not affiliated with Filevine and should not be responded to.
 

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.