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Trilon Jobs in California (NOW HIRING)

Trilon

Traffic Engineer III

Ontario, CA · Hybrid

$88K - $120K/yr

Engineer III - Traffic Alta is looking for an Traffic Engineer III to join our traffic group in our Ontario / Inland Empire office. In this role, you will support and lead traffic engineering ...

Trilon

Marketing Coordinator

Oakland, CA · Hybrid

$48K - $67K/yr

As a Marketing Coordinator at Alta Planning + Design, you will promote and support Alta's mission through your strengths as a storyteller, business thinker, document designer, and graphic ...

Trilon

Transportation Engineer

Los Angeles, CA

$83K - $110K/yr

Alta is looking for an Active Transportation Engineer to join our growing design team in our Los Angeles, California office. This mid-career role is a fantastic opportunity for someone passionate ...

Trilon

Marketing Coordinator

Los Angeles, CA · Hybrid

$45K - $63K/yr

As a Marketing Coordinator at Alta Planning + Design, you will promote and support Alta's mission through your strengths as a storyteller, business thinker, document designer, and graphic ...

Trilon

Engineering Designer II

Los Angeles, CA

Alta Planning + Design seeks an Engineering Designer II for our Los Angeles office. This production-level position is a great opportunity for someone who believes in the importance of active ...

Trilon

Zoning Specialist

Oakland, CA · Hybrid

$90K - $125K/yr

Alta Planning + Design is seeking an experienced Zoning Specialist to join our team in Oakland . In this role, you will write development and design regulations for zoning codes, specific plans, and ...

Trilon

Associate Landscape Architect

Los Angeles, CA

$74K - $102K/yr

Alta Planning + Design seeks an Associate Landscape Architect (I-II) for our Los Angeles location. Alta's landscape architecture practice is dynamic and diverse, contributing to projects at a variety ...

Trilon

Traffic Engineer III

Oakland, CA

$99K - $136K/yr

Engineer III - Traffic Alta is looking for an Traffic Engineer III to join our traffic group in our Oakland office. In this role, you will support and lead traffic engineering analysis, safety and ...

Trilon

Zoning Specialist

Los Angeles, CA · Hybrid

$90K - $125K/yr

Alta Planning + Design is seeking an experienced Zoning Specialist to join our team in Los Angeles . In this role, you will write development and design regulations for zoning codes, specific plans ...

Trilon

Traffic Engineer III

Los Angeles, CA · Hybrid

$100K - $130K/yr

Engineer III - Traffic Alta is looking for an Traffic Engineer III to join our traffic group in our Los Angeles office. In this role, you will support and lead traffic engineering analysis, safety ...

Trilon

Engineering Designer II

Ontario, CA

Alta Planning + Design seeks an Engineering Designer II for our Ontario, California office. This production-level position is a great opportunity for someone who believes in the importance of active ...

Trilon Group

Transportation Engineer

Los Angeles, CA · On-site

$100K - $130K/yr

Transportation Engineer Department: Engineering Employment Type: Full Time Location: Los Angeles, CA Compensation: $100,000 - $130,000 / year Description Alta is looking for a Transportation Engineer ...

Trilon Group

Engineering Designer II

Los Angeles, CA · On-site

$85K - $115K/yr

Engineering Designer II Department: Engineering Employment Type: Full Time Location: Los Angeles, CA Compensation: $85,000 - $115,000 / year Description Alta Planning + Design seeks an Engineering ...

Trilon Group

Traffic Engineer III

Los Angeles, CA · On-site

$100K - $130K/yr

Traffic Engineer III Department: Engineering Employment Type: Full Time Location: Los Angeles, CA Compensation: $100,000 - $130,000 / year Description Engineer III - Traffic Alta is looking for an ...

Trilon Group

Zoning Specialist

Los Angeles, CA · On-site

$90K - $125K/yr

Zoning Specialist Department: Community Planning Employment Type: Full Time Location: Los Angeles, CA Compensation: $90,000 - $125,000 / year Description Alta Planning + Design is seeking an ...

Trilon Group

Description About Alta Alta Planning + Design is an active transportation company dedicated to creating active, healthy communities through planning, landscape architecture, engineering, and ...

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What are some common challenges faced by developers working at Trilon, and how does the company support overcoming them?

Developers at Trilon often work on complex projects involving cutting-edge technologies such as Angular and NestJS, which can present challenges like adapting to rapid framework updates and integrating new tools. The company fosters a collaborative work environment where team members regularly participate in code reviews, knowledge-sharing sessions, and pair programming to address these challenges. Additionally, Trilon encourages ongoing learning by providing access to training resources and supporting attendance at industry conferences, helping developers stay current and grow their expertise.

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

I'm sorry, but 'Trilon' is not a recognized real-world professional occupation, so I am unable to provide information for this job title.

What is the difference between Trilon vs Mechanical Engineer?

AspectTrilonMechanical Engineer
Required CredentialsTypically a diploma or associate degree in related fieldBachelor's degree in Mechanical Engineering or related field
Work EnvironmentManufacturing, assembly lines, or technical supportDesign, analysis, testing, and manufacturing settings
Industry UsageIndustrial, manufacturing, and technical service sectorsEngineering firms, manufacturing companies, R&D departments

Trilon roles often focus on technical support and assembly tasks, requiring less formal education than Mechanical Engineers, who are involved in design, analysis, and development within engineering industries. While both work in industrial environments, their responsibilities and credentials differ significantly.

What are Trilon developers?

Trilon developers are professionals who work at Trilon, a company known for its expertise in building web applications, particularly using the NestJS framework, which Trilon created and actively maintains. These developers specialize in backend and full-stack development, focusing on scalable, maintainable, and efficient server-side applications. They also contribute to open-source projects, provide consulting, and deliver training in modern web technologies. Trilon developers are recognized for their deep knowledge of TypeScript, Node.js, and best practices in software engineering.
What are popular job titles related to Trilon jobs in California? For Trilon jobs in California, the most frequently searched job titles are:
What job categories do people searching Trilon jobs in California look for? The top searched job categories for Trilon jobs in California are:
What cities in California are hiring for Trilon jobs? Cities in California with the most Trilon job openings:
Trilon jobs near you
Infographic showing various Trilon job openings in California as of June 2026, with employment types broken down into 100% Full Time. Highlights an 50% In-person, and 50% Remote job distribution.
Traffic Engineer III

Traffic Engineer III

Trilon

Ontario, CA • Hybrid

$88K - $120K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 28 days ago

Job description

Engineer III - Traffic

Alta is looking for an Traffic Engineer III to join our traffic group in our Ontario / Inland Empire office. In this role, you will support and lead traffic engineering analysis, safety and planning studies, and design tasks for sustainable transportation projects focused on making a positive impact on communities around the country.
About Alta
Alta is a missiondriven company working to mitigate climate change and advance safety and social justice by shaping sustainable, peoplecentered communities. We bring together expertise across planning, design, engineering, education and encouragement programs, and community engagement to help communities thrive. Our work is grounded in the belief that how places are designed and experienced has a profound impact on equity, health, and opportunity-and that people should always be at the heart of those decisions.
Founded in 1996, Alta was at the forefront of the active transportation movement and has spent nearly 30 years partnering with communities to imagine a more connected, resilient, and inclusive future. Today, with more than 225 staff across the United States and beyond, we are a global leader in creating environments that support everyday life, strengthen human connection, and respond to the challenges of a changing world. Alta offers the opportunity to collaborate across disciplines, contribute to meaningful work at every scale, and be part of a team committed to making lasting, positive change for people and the places they call home.
Day-to-day responsibilities for this role include:
  • Lead and support conceptual design plans and engineering-backed recommendations in partnership with safety, planning, and design teams. 
  • Conduct multimodal traffic engineering analyses, including traffic operations, safety assessments, corridor/intersection studies, signal operations review, and traffic simulation/modeling. 
  • Prepare traffic signal timing and retiming evaluations, including signal timing sheets and implementation support as needed. 
  • Develop cost estimates for safety, planning, and engineering projects. 
  • Develop traffic signal plans, street lighting plans, ITS design, signing/striping layouts, temporary traffic control plans (TCPs), and PS&E packages using AutoCAD and/or MicroStation. 
  • Apply MUTCD, Caltrans, NACTO, FHWA, and local agency standards to analysis findings and design solutions. 
  • Collaborate with engineers and planners to integrate bicycle, pedestrian, transit, accessibility, and safety enhancements into projects. 
  • Support quality control, constructability review, and coordination with clients and partner disciplines. 
  • Mentor junior staff in traffic analysis, design best practices, and project delivery. 
  • Implement best practices and process improvements to enhance project efficiency and consistency. 
  • Support traffic group leadership with business development, scopes, fee estimates, proposals, and client coordination. 
Required

This position requires a combination of skills, experience and education including, but not limited to
  • 5+ years of experience as a traffic engineer in a consulting environment or public entity. 
  • Bachelor's degree in Civil Engineering. 
  • Proficiency in AutoCAD and/or MicroStation. 
  • Proficiency in Synchro, Vistro, VISSIM, SIDRA, and/or similar traffic analysis tools. 
  • Strong understanding of traffic analysis, traffic operations, multimodal safety, and engineering design principles. 
  • Demonstrated experience preparing Plans, Specifications, and Estimates packages for traffic design-related projects, including traffic signals, signing and striping, TCPs, ITS, and/or street lighting. 
  • Ability to manage competing priorities and multiple simultaneous projects with cross-functional teams. 
  • Strong written and oral communication and presentation skills. 
  • Working knowledge of MS Excel, Word, MS Project, or equivalent tools. 
Preferred
There are a number of additional skills, experience, and education that would be beneficial to this position including, but not limited to:
  • Registration as a Professional Engineer in the state where the position is based, or ability to obtain within twelve months of hire; PTOE or California T.E. certification a plus. 
  • Transportation planning and operations experience, including signal timing, multimodal corridor studies, safety action plans, Vision Zero initiatives, or Safe System projects. 
  • Experience in active and non-motorized transportation planning and design. 
  • Experience supporting traffic operations analysis using Synchro, VISSIM, Vistro, SIDRA, or similar tools. 
  • Proficiency in AGI and/or Visual Lighting. 
  • Experience supporting grant-funded or federally funded safety and mobility projects. 
  • Active participation in industry-relevant professional associations and committees. 
Flexible Schedule
Alta offers a flexible, hybrid work schedule where most employees work from home three days per week. In-office days support our collaborative culture, one of our core values.
Compensation
The pay range for this job in Ontario is $100,000-$130,000 annually. Placement within the range is based upon experience, skill-sets, and qualifications.
Benefits
Alta offers comprehensive benefits to all full-time employees:
  • Medical: PPO or HSA medical plans
  • Dental/Vision: PPO
  • Life Insurance: Alta pays 100% of the premium for life and AD&D, equal to your base compensation
  • 401(k): Alta provides a match up to 3%
  • PTO: 21 days accrued annually to start
  • Holidays: 11 total company paid holidays
  • Paid Parental Leave/Short-Term Disability 
  • Additional Benefits: Wellness reimbursement up to $800 annually, Alta Gets Around benefit of up to $900 annually, 5-year travel award, and professional development opportunities
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