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Junior Rails Developer Jobs in Illinois (NOW HIRING)

... railways and other concrete and structural components such as foundations, drainage devices ... Join one of the largest construction firms in the country (Engineering News-Record [ENR]: #1 in ...

... railways and other concrete and structural components such as foundations, drainage devices ... Join one of the largest construction firms in the country (Engineering News-Record [ENR]: #1 in ...

Senior Track Engineer

Chicago, IL · On-site

$167K - $200K/yr

Rail, ties, ballast, and subgrade systems * Yard and siding layouts * At-grade crossings * Prepare ... Mentor junior engineers and technical staff. * Participate in client meetings, presentations, and ...

Senior Track Engineer

Chicago, IL · On-site +1

$107K - $147K/yr

Rail, ties, ballast, and subgrade systems * Yard and siding layouts * At-grade crossings * Prepare ... Mentor junior engineers and technical staff. * Participate in client meetings, presentations, and ...

Senior Traction Power Engineer

Chicago, IL · Hybrid

$107K - $147K/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

Chicago, IL · Hybrid

$107K - $147K/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

Chicago, IL · On-site

$107K - $147K/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 Illinois salary details

$23.3K

$86.2K

$133.2K

How much do junior rails developer jobs pay per year?

As of Jun 25, 2026, the average yearly pay for junior rails developer in Illinois is $86,220.00, according to ZipRecruiter salary data. Most workers in this role earn between $64,900.00 and $84,300.00 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 Illinois are hiring for Junior Rails Developer jobs? Cities in Illinois with the most Junior Rails Developer job openings:
Junior Estimator

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 21 days ago


Job description

Overview

William Charles Construction, a MasTec Company, is hiring for an experienced Junior Estimator with an estimating background with heavy civil, highways and roadways.

The primary responsibilities of this role will include providing accurate takeoff and cost estimates for railways and other concrete and structural components such as foundations, drainage devices, culverts and retaining walls.  

Company Overview

With more than a century of exceptional work on our resume, William Charles Construction remains guided by the pursuit of excellence. Our “Do it Right the First Time” work ethic has been the cornerstone of our business philosophy since 1892. With our broad background in heavy civil construction, environmental management, and mining and materials production, we have the expertise to help our customers complete their most complex projects. 

William Charles Construction is part of the MasTec Clean Energy & Infrastructure (CE&I) business segment. The CE&I segment generates over $4.5 billion in annual revenue, providing construction services across our renewables, industrial, infrastructure, and general building operating groups. Sustainability and safety are foundational to our culture and influence everything we do.

MasTec, a minority-owned Fortune 500 company, has shaped the construction industry for more than 90 years. With over 35,000 employees and 400 offices nationwide, we provide flexibility and career growth in dynamic work environments. Join one of the largest construction firms in the country (Engineering News-Record [ENR]: #1 in Power, #16 Top 50 Domestic Heavy Contractors, #13 Transportation Contractor). 


Responsibilities
  • Participate in preconstruction efforts for design build or other alternative delivery projects Review opportunity pursuits and develop preliminary budget estimate and itemized summary for go/no-go evaluation
  • Review, analyze and interpret contract documents for complete understanding of the work and owner deliverables to provide accurate, detailed cost estimates
  • Analyze historical data and use estimating software to calculate costs for labor, materials, equipment, and subcontractor services
  • Develop subcontractor and supplier scope packages and perform detailed outreach to procure pricing coverage as required
  • Ability to manage the bid process from start to finish and report to Executives for final close and sbumittal
  • Collaborate with procurement teams to ensure the availability of materials at competitive prices
  • Estimate labor and equipment requirements based on the project scope and schedule
  • Conduct site visits to assess project conditions and identify any potential risks or challenges
  • Evaluate soil conditions, environmental factors, and other site-specific concerns that could affect the cost and schedule of the project
  • Identify critical issues and develop risk exposure summary with associated cost impacts
  • Provide creative and innovative thinking to analyze and develop strategy and value engineering solutions.
  • Effective communication and interaction with clients, engineers, subcontractors and suppliers
  • Perform and review quantity takeoff comparisons to provide evaluation for accuracy and acceptance
  • Work with scheduling staff and Operations to develop accurate and precise bid schedules
  • Present complete and accurate estimates to ensure confidence in decision making
  • Company representation at pre-bids and site visits

Qualifications
  • Bachelor’s Degree in Civil/Structural Engineering or Construction Management and related field experience. A combination of education and experience will be considered in lieu of a degree
  • 5 years of experience in heavy civil estimating
  • Precise attention to details and exceptionally organized
  • Highly motivated self-starter
  • Stay up-to-date with industry trends, pricing, and best practices
  • Contribute to the development of improved estimating techniques and processes

Work Environment:

  • The role typically involves a combination of office work and occasional site visits
  • Occasional travel between our Illinois and Indiana offices can be expected
  • Site visits may require the use of personal protective equipment (PPE) and exposure to outdoor conditions

Physical Requirements:

  • Ability to lift up to 25 lbs
  • Prolonged periods of sitting or standing during estimation tasks
  • Occasional travel to job sites for project assessments

What's in it for you:

Financial Wellbeing

  • Ongoing performance reviews and merit increases
  • 401(k) with company match & Employee Stock Purchase Plan (ESPP)
  • Flexible spending account (Healthcare & Dependent care)

Health & Wellness

  • Medical, Dental, and Vision insurance (plan choice) - coverage for spouse, domestic partner, and children
  • Diabetes Management, Telehealth Coverage, Prescription Drug Plan, Pet Insurance

Family & Lifestyle

  • Paid Time Off, Paid Holidays, Bereavement Leave
  • Military Leave, including Differential Pay and Benefits Continuation
  • Employee Assistance Program

Planning for the Unexpected

  • Short and long-term disability, life insurance, and accidental death & dismemberment
  • Voluntary life insurance, accident, critical illness, hospital indemnity coverage
  • Emergency Travel Assistance Program
  • Group legal plan

Position may be subject to pre-employment screening, which may include background check and drug testing. Accessibility: If you need accommodation as part of the employment process, contact ceicareers@mastec.com. Due to the high volume of applications received, we are unable to respond to individual requests regarding application status. Please log into your candidate profile for up-to-date information. 

MasTec, Inc. is an Equal Employment Opportunity Employer. The Company's policy is not to unlawfully discriminate against any applicant or employee on the basis of race, color, sex, sexual orientation, gender identity, religion, national origin, age, disability, genetic information, military status, or any other consideration made unlawful by applicable federal, state, or local laws. The Company also prohibits harassment of applicants and employees based on any of these protected categories. It is also MasTec's policy to comply with all applicable state, federal and local laws respecting consideration of unemployment status in making hiring decisions.

MasTec Clean Energy & Infrastructure and our subsidiaries do not work with any third-party recruiters or agencies without a valid signed agreement and partnership with the Corporate Talent Acquisition Team.

Disclaimer: MasTec and our Subsidiaries will never ask prospective employees for any form of payment or money transfer as part of job application or onboarding. We do not ask prospective employees for information about credit cards or personal passwords, and it does not require applicants to purchase equipment or software. Ensure that all recruiter email addresses end in @mastec.com or @talent.icims.com. If you suspect you are the target of a scam, we advise you to contact your local law enforcement agency and report fraud at https://reportfraud.ftc.gov/.

#LI-TM1

#LI-Onsite

#Dunnett Bay

#Herlighy 

#Lorig 

#Granite 

#Kiewit

#Helm 

#Constructors

#IHC 

#construction

#Stark

#Excavating

#OttoBaum

#Laverdiere 

Qualifications:
  • Bachelor’s Degree in Civil/Structural Engineering or Construction Management and related field experience. A combination of education and experience will be considered in lieu of a degree
  • 5 years of experience in heavy civil estimating
  • Precise attention to details and exceptionally organized
  • Highly motivated self-starter
  • Stay up-to-date with industry trends, pricing, and best practices
  • Contribute to the development of improved estimating techniques and processes

Work Environment:

  • The role typically involves a combination of office work and occasional site visits
  • Occasional travel between our Illinois and Indiana offices can be expected
  • Site visits may require the use of personal protective equipment (PPE) and exposure to outdoor conditions

Physical Requirements:

  • Ability to lift up to 25 lbs
  • Prolonged periods of sitting or standing during estimation tasks
  • Occasional travel to job sites for project assessments

What's in it for you:

Financial Wellbeing

  • Ongoing performance reviews and merit increases
  • 401(k) with company match & Employee Stock Purchase Plan (ESPP)
  • Flexible spending account (Healthcare & Dependent care)

Health & Wellness

  • Medical, Dental, and Vision insurance (plan choice) - coverage for spouse, domestic partner, and children
  • Diabetes Management, Telehealth Coverage, Prescription Drug Plan, Pet Insurance

Family & Lifestyle

  • Paid Time Off, Paid Holidays, Bereavement Leave
  • Military Leave, including Differential Pay and Benefits Continuation
  • Employee Assistance Program

Planning for the Unexpected

  • Short and long-term disability, life insurance, and accidental death & dismemberment
  • Voluntary life insurance, accident, critical illness, hospital indemnity coverage
  • Emergency Travel Assistance Program
  • Group legal plan

Position may be subject to pre-employment screening, which may include background check and drug testing. Accessibility: If you need accommodation as part of the employment process, contact ceicareers@mastec.com. Due to the high volume of applications received, we are unable to respond to individual requests regarding application status. Please log into your candidate profile for up-to-date information. 

MasTec, Inc. is an Equal Employment Opportunity Employer. The Company's policy is not to unlawfully discriminate against any applicant or employee on the basis of race, color, sex, sexual orientation, gender identity, religion, national origin, age, disability, genetic information, military status, or any other consideration made unlawful by applicable federal, state, or local laws. The Company also prohibits harassment of applicants and employees based on any of these protected categories. It is also MasTec's policy to comply with all applicable state, federal and local laws respecting consideration of unemployment status in making hiring decisions.

MasTec Clean Energy & Infrastructure and our subsidiaries do not work with any third-party recruiters or agencies without a valid signed agreement and partnership with the Corporate Talent Acquisition Team.

Disclaimer: MasTec and our Subsidiaries will never ask prospective employees for any form of payment or money transfer as part of job application or onboarding. We do not ask prospective employees for information about credit cards or personal passwords, and it does not require applicants to purchase equipment or software. Ensure that all recruiter email addresses end in @mastec.com or @talent.icims.com. If you suspect you are the target of a scam, we advise you to contact your local law enforcement agency and report fraud at https://reportfraud.ftc.gov/.

#LI-TM1

#LI-Onsite

#Dunnett Bay

#Herlighy 

#Lorig 

#Granite 

#Kiewit

#Helm 

#Constructors

#IHC 

#construction

#Stark

#Excavating

#OttoBaum

#Laverdiere 

Education:UNAVAILABLEEmployment Type: FULL_TIME