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Junior Rails Developer Jobs in California (NOW HIRING)

Rail Lead - Los Angeles

Los Angeles, CA · On-site

$300K - $380K/yr

Arcadis seeks a Rail Lead to join our team in California , in this role you will serve as a senior ... Mentor junior engineers and support staff, fostering technical excellence and knowledge sharing.

Guide, coach, and develop junior engineers and assistant project managers, building a culture of ... Deep knowledge of rail systems engineering, design standards, and safety codes. * Exceptional ...

Guide, coach, and develop junior engineers and assistant project managers, building a culture of ... Deep knowledge of rail systems engineering, design standards, and safety codes. * Exceptional ...

Design OCS layout, wire tensions, for light rail, commuter rail and streetcar with pantograph as ... Serve as a leader and provide guidance to junior team members * Support the management of System ...

You should be a passionate developer who wants to make a major impact at an early-stage startup ... You should have a deep understanding of Rails development, a proven track record of building ...

You should be a passionate developer who wants to make a major impact at an early-stage startup ... You should have a deep understanding of Rails development, a proven track record of building ...

Civil Engineer I / II

Wasco, CA · On-site

$41 - $55/hr

About the Position We're seeking a junior to mid-level Civil Engineer / Field Engineer to support large, heavy-civil infrastructure programs including highways, roads, bridges, transit (both rail and ...

Civil Engineer I / II

Wasco, CA · On-site

$41 - $55/hr

About the Position We're seeking a junior to mid-level Civil Engineer / Field Engineer to support large, heavy-civil infrastructure programs including highways, roads, bridges, transit (both rail and ...

... rail, aviation, federal transportation ports and marine infrastructure, your work will directly ... Mentor junior staff * Perform other duties as needed #LI_JF1 Keywords: Bridge Engineer Preferred ...

... rail, aviation, federal transportation ports and marine infrastructure, your work will directly ... Mentor junior staff * Perform other duties as needed #LI_JF1 Keywords: Bridge Engineer Preferred ...

... rail, aviation, federal transportation ports and marine infrastructure, your work will directly ... Mentor junior staff * Perform other duties as needed #LI_JF1 Keywords: Bridge Engineer Preferred ...

Senior Traction Power Engineer

Los Angeles, CA · On-site

$112K - $154K/yr

... rail and transit, tunnels, and water. Want to be part of the creation and construction of our ... Lead a group of junior electrical engineers to develop traction power design packages * Design ...

Senior Traction Power Engineer

Los Angeles, CA · Hybrid

$112K - $154K/yr

... rail and transit, tunnels, and water. Want to be part of the creation and construction of our ... Lead a group of junior electrical engineers to develop traction power design packages * Design ...

Senior Traction Power Engineer

Los Angeles, CA · Hybrid

$112K - $154K/yr

... rail and transit, tunnels, and water. Want to be part of the creation and construction of our ... Lead a group of junior electrical engineers to develop traction power design packages * Design ...

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Junior Rails Developer information

See California salary details

$23.7K

$87.8K

$135.7K

How much do junior rails developer jobs pay per year?

As of Jul 15, 2026, the average yearly pay for junior rails developer in California is $87,810.00, according to ZipRecruiter salary data. Most workers in this role earn between $66,100.00 and $85,900.00 per year, depending on experience, location, and employer.

What types of projects and responsibilities can a Junior Rails Developer expect in their first year on the job?

As a Junior Rails Developer, you can expect to work on tasks such as fixing bugs, writing and maintaining tests, and implementing small features under the guidance of more experienced developers. You'll likely participate in code reviews, collaborate closely with product managers and designers, and be encouraged to learn best practices in coding and version control. The environment is typically supportive, with regular feedback and opportunities to ask questions, making it a great setting for professional growth. Over time, you may gradually take on more complex assignments and begin to contribute to architectural discussions.

What is the difference between Junior Rails Developer vs Ruby on Rails Developer?

AspectJunior Rails DeveloperRuby on Rails Developer
Experience LevelEntry-level, 0-2 yearsMid to senior level, 2+ years
ResponsibilitiesAssisting in development, learning codebaseDesigning, developing, maintaining Rails applications
Required SkillsBasic Ruby/Rails knowledge, eagerness to learnStrong Ruby/Rails skills, problem-solving
Work EnvironmentStartups, small teams, internshipsEstablished companies, tech firms, agencies

The main difference between a Junior Rails Developer and a Ruby on Rails Developer lies in experience and responsibilities. Junior Rails Developers are typically entry-level, focusing on learning and assisting with tasks, while Ruby on Rails Developers have more experience and handle complex development projects independently.

What does a Junior Rails Developer do?

A Junior Rails Developer is an entry-level software engineer who works with Ruby on Rails, a popular web development framework. Their responsibilities typically include writing and maintaining code, fixing bugs, collaborating with other developers, and learning best practices for web application development. Junior Rails Developers often assist in building features, performing tests, and ensuring applications run smoothly while gaining experience and mentorship from more senior team members.

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

To thrive as a Junior Rails Developer, you need a solid understanding of Ruby, Ruby on Rails framework, basic front-end languages (HTML, CSS, JavaScript), and a relevant degree or coding bootcamp experience. Familiarity with tools like Git, PostgreSQL or MySQL, and test frameworks such as RSpec is typically expected. Strong problem-solving skills, eagerness to learn, and effective communication help you collaborate within development teams and grow in the role. These skills are important because they enable you to build, maintain, and improve web applications efficiently while adapting to evolving project requirements.
What cities in California are hiring for Junior Rails Developer jobs? Cities in California with the most Junior Rails Developer job openings:
Infographic showing various Junior Rails Developer job openings in California as of July 2026, with employment types broken down into 84% Full Time, 5% Part Time, 2% Temporary, and 9% Contract. Highlights an 82% Physical, 3% Hybrid, and 15% Remote job distribution, with an average salary of $87,810 per year, or $42.2 per hour.
Rail Lead - Los Angeles

Rail Lead - Los Angeles

Arcadis

Los Angeles, CA • On-site

$300K - $380K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 18 days ago


Arcadis rating

8.5

Company rating: 8.5 out of 10

Based on 21 frontline employees who took The Breakroom Quiz

80th of 369 rated engineering


Job description

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.

We are more than 34,000 people, in over 30 countries, dedicated to improving quality of life. Everyone has an important role to play. With the power of many curious minds, together we can solve the world's most complex challenges and deliver more impact together.

Role Description:

Arcadis seeks a Rail Lead to join our team in Californiain this role you will serve as a senior technical and managerial leader responsible for overseeing all rail systems and track-related components for large rail programs in Southern California. This role requires deep expertise in transit construction, strong leadership capabilities, and the ability to coordinate across multidisciplinary teams to ensure safe, compliant, and high-quality project delivery.

Role Accountabilities:

  • Lead the planning, design coordination, and construction oversight of all rail-related systems, including trackwork, special trackwork, and interfaces with systems (signals, traction power, communications).
  • Provide technical leadership and guidance throughout all project phases, from pre-construction through commissioning and revenue service.
  • Coordinate closely with civil, structural, systems, and operations teams to ensure seamless integration of rail infrastructure.
  • Review and approve design documents, shop drawings, and construction submittals for compliance with project specifications and industry standards.
  • Oversee construction activities in the field, ensuring adherence to safety protocols, quality standards, and project schedules.
  • Identify and mitigate risks related to rail systems installation and integration.
  • Interface with stakeholders, contractors, consultants, and regulatory agencies.
  • Support procurement, contract management, and change order evaluations related to rail scope.
  • Mentor junior engineers and support staff, fostering technical excellence and knowledge sharing.
  • Ensure compliance with all applicable federal, state, and local regulations, including California Public Utilities Commission (CPUC) requirements.

Required Qualifications:

  • Bachelor's degree in Civil Engineering, Transportation Engineering, or a related field (Master's degree preferred).
  • Active California Professional Engineer (PE) License required.
  • Minimum 25 years of progressive experience in construction and engineering, with a strong emphasis on rail and transit projects.
  • Demonstrated experience on large-scale urban transit projects, preferably within California or similar regulatory environments.

Key Skills and Abilities:

  • Extensive knowledge of track design standards, construction methods, and rail system interfaces.
  • Proven leadership experience managing multidisciplinary teams on complex infrastructure projects.
  • Strong understanding of project delivery methods (Design-Bid-Build, Design-Build, CM/GC).
  • Excellent communication, coordination, and stakeholder management skills.

Preferred Qualifications:

  • Prior experience working on U.S. transit agency projects.
  • Familiarity with AREMA standards, CPUC regulations, and FRA guidelines.
  • Experience with underground, at-grade, and elevated rail systems.
  • Background in systems integration and testing/commissioning.

Why Arcadis?

We can only achieve our goals when everyone is empowered to be their best. We believe everyone's contribution matters. It's why we are pioneering a skills-based approach, where you can harness your unique experience and expertise to carve your career path and maximize the impact we can make together.

You'll do meaningful work, and no matter what role, you'll be helping to deliver sustainable solutions for a more prosperous planet. Make your mark, on your career, your colleagues, your clients, your life and the world around you.

Together, we can create a lasting legacy.

Our Commitment to Equality, Diversity, Inclusion & Belonging

We want you to be able to bring your best self to work every day. Our ambition is to be an employer of choice and provide a great place to work for all our people. We are an equal opportunity employer. We are dedicated to a policy of non-discrimination in employment on any basis including race, creed, color, religion, national origin, sex, age, disability, marital status, sexual orientation, gender identity, citizenship status, disability, veteran status, or any other basis prohibited by law.

Arcadis offers benefits for full time and part time positions. These benefits include medical, dental, and vision, EAP,  401K, STD, LTD, AD&D, life insurance, paid parental leave, reward & recognition program and optional benefits including wellbeing benefits, adoption assistance and tuition reimbursement.  We offer nine paid holidays and 20 days PTO that accrue per year. The salary range for this position is $300,000 - $380,000. Actual salaries will vary and are based on several factors, such as experience, education, budget, internal equity, project and location.

Join Arcadis. Create a Legacy.

#LI-BB1 #LI-ONSITE


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About Arcadis

Sourced by ZipRecruiter

Our work with clients has a direct impact on people's lives and on the planet. We make moving, living and belonging in cities safer, more resilient and more sustainable. By partnering with our clients as responsible custodians of our earth's resources, we can create a sustainable planet. We continue to think of new ways to make positive impacts and create better experiences for people; data driven and digital solutions have become part of the Arcadis DNA. Working together with clients and using techniques like design thinking, we can get to the heart of our clients' most pressing challenges and work together to solve them.

Industry

Engineering professional services

Company size

10,000+ Employees

Headquarters location

Highlands Ranch, CO, US