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Junior Rails Developer Jobs in Pennsylvania (NOW HIRING)

AECOM

OCS Engineer

Philadelphia, PA · On-site

Serve as part of a team overseeing junior engineers on mid- to large size projects. * Apply knowledge and understanding of rail design, rail operations and construction on or about a railroad ...

AECOM

OCS Engineer

Philadelphia, PA · On-site

Serve as part of a team overseeing junior engineers on mid- to large size projects. * Apply knowledge and understanding of rail design, rail operations and construction on or about a railroad ...

AECOM

OCS Engineer

Philadelphia, PA · On-site

Serve as part of a team overseeing junior engineers on mid- to large size projects. * Apply knowledge and understanding of rail design, rail operations and construction on or about a railroad ...

AECOM

Senior Signals Engineer

Philadelphia, PA

$105K - $144K/yr

... rail projects. Summary: * Provide technical leadership, mentorship, and engineering oversight to mid-level and junior engineers, designers, and CAD staff, including performing QA/QC reviews and ...

AECOM

Senior Signals Engineer

Philadelphia, PA · On-site

$105K - $144K/yr

... rail projects. Summary: * Provide technical leadership, mentorship, and engineering oversight to mid-level and junior engineers, designers, and CAD staff, including performing QA/QC reviews and ...

AECOM

Senior Signals Engineer

Philadelphia, PA · On-site

$105K - $144K/yr

... rail projects. Summary: * Provide technical leadership, mentorship, and engineering oversight to mid-level and junior engineers, designers, and CAD staff, including performing QA/QC reviews and ...

Hatch

Senior Traction Power Engineer

Ambler, PA · On-site

$100K - $138K/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 ...

Hatch

Senior Traction Power Engineer

Ambler, PA · On-site

$100K - $138K/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 ...

Hatch

Senior Traction Power Engineer

Ambler, PA · On-site

$100K - $138K/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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All JobsJunior Rails Developer JobsJunior Rails Developer Jobs in Pennsylvania

Junior Rails Developer information

See Pennsylvania salary details

$24.1K

$89.2K

$137.8K

How much do junior rails developer jobs pay per year?

As of Jun 25, 2026, the average yearly pay for junior rails developer in Pennsylvania is $89,189.00, according to ZipRecruiter salary data. Most workers in this role earn between $67,200.00 and $87,200.00 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 are popular job titles related to Junior Rails Developer jobs in Pennsylvania? For Junior Rails Developer jobs in Pennsylvania, the most frequently searched job titles are:
What job categories do people searching Junior Rails Developer jobs in Pennsylvania look for? The top searched job categories for Junior Rails Developer jobs in Pennsylvania are:
Junior Rails Developer jobs near you
Infographic showing various Junior Rails Developer job openings in Pennsylvania as of June 2026, with employment types broken down into 86% Full Time, 11% Part Time, and 3% Contract. Highlights an 88% Physical, 2% Hybrid, and 10% Remote job distribution, with an average salary of $89,189 per year, or $42.9 per hour.
Test and Commissioning Engineer - Onboard System 1

Test and Commissioning Engineer - Onboard System 1

Alstom

Pittsburgh, PA • On-site

Full-time

Posted 8 days ago

Alstom rating

7.5

Company rating: 7.5 out of 10

Based on 49 frontline employees who took The Breakroom Quiz

220th of 419 rated machine equipment manufacturers

Job description

At Alstom, we understand transport networks and what moves people. From high-speed trains, metros, monorails, and trams, to turnkey systems, services, infrastructure, signalling and digital mobility, we offer our diverse customers the broadest portfolio in the industry. Every day, 80,000 colleagues lead the way to greener and smarter mobility worldwide, connecting cities as we reduce carbon and replace cars.
Could you be the full-time onsite Test & Commissioning Engineer in Pittsburgh, PA, US we're looking for?
Your future role
"Take on a new challenge and apply your engineering expertise in a new cutting-edge field. You'll work alongside collaborative and detail-oriented teammates.
You'll ensure onboard systems meet operational, safety, and performance standards before handover to operations, making a direct impact on the reliability and safety of rail transportation. Day-to-day, you'll work closely with teams across the business (system engineers, project managers, client representatives, and maintenance teams), troubleshoot integration issues, and mentor junior engineers, and much more."
We'll look to you for:
  • Leading validation and integration testing of signaling, control, communications, and onboard subsystems ,
  • Troubleshooting system integration issues and coordinating with design/development teams to resolve root causes ,
  • Overseeing commissioning phases, ensuring correct configuration and performance under real-world scenarios ,
  • Documenting results, tracking nonconformities (NCRs), proposing corrective actions, and capturing lessons learned (REX) ,
  • Enforcing safety, environmental, and quality standards at all times ,
  • Deploying and maintaining T&C processes and methods aligned with Alstom standards and project requirements ,
  • Executing functional, integration, and system-level tests of onboard systems according to approved test plans ,
  • Recording, analyzing, and interpreting test results while identifying deviations or anomalies and driving resolution ,
  • Planning and coordinating commissioning with engineering, operations, and maintenance stakeholders ,
  • Mentoring and developing junior T&C engineers"

All about you
We value passion and attitude over experience. That's why we don't expect you to have every single skill. Instead, we've listed some that we think will help you succeed and grow in this role:
  • Degree in Electrical, Electronics, Telecommunications, Systems Engineering, or equivalent experience ,
  • Experience or understanding of testing and commissioning in rail or transportation systems ,
  • Knowledge of railway signaling, onboard systems (e.g., ATC, TCMS, communication protocols), and control systems ,
  • Familiarity with diagnostic tools such as multimeters, oscilloscopes, and software diagnostic tools ,
  • Excellent verbal and written communication skills ,
  • Strong analytical thinking and root-cause analysis capabilities ,
  • Ability to troubleshoot hardware and software issues and integrate subsystems ,
  • Flexibility to work nights, weekends, and holidays when needed ,
  • Willingness to travel for short- or long-term assignments across locations or countries ,
  • Proactive mindset with the ability to adapt to dynamic environments and shifting priorities

Things you'll enjoy
Join us on a life-long transformative journey - the rail industry is here to stay, so you can grow and develop new skills and experiences throughout your career. You'll also:
  • Collaborate with transverse teams and helpful colleagues ,
  • Work with cutting-edge onboard systems, signaling technologies, and rail vehicle platforms ,
  • Progress towards becoming a recognized expert in testing and commissioning within the rail industry. ,
  • Utilise our dynamic and innovative working environment that fosters continuous learning and professional growth." ,
  • Contribute to innovative projects,
  • Steer your career in whatever direction you choose across functions and countries,
  • Benefit from our investment in your development, through award-winning learning

You don't need to be a train enthusiast to thrive with us. We guarantee that when you step onto one of our trains with your friends or family, you'll be proud. If you're up for the challenge, we'd love to hear from you!
Important to note
As a global business, we're an equal-opportunity employer that celebrates diversity across the 63 countries we operate in. We're committed to creating an inclusive workplace for everyone.

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