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Junior Ruby Developer Jobs in Chicago, IL (NOW HIRING)

Senior Engineer, Security

Chicago, IL · On-site

$139K - $181K/yr

Mentor and guide junior security team members, fostering their professional growth and skills ... Proficiency in scripting and programming languages (e.g., Python, Java, Bash, Ruby, Node) to ...

Developer Sr

Evanston, IL · On-site

$81/hr

Provides input to performance evaluations for junior team members. Miscellaneous Performed other ... Experience developing modern web applications using PHP/Laravel, Ruby on Rails, or similar MVC ...

Data Engineer

Chicago, IL · On-site +1

$100K - $145K/yr

Supervise junior members of the data engineering team. Guiding, planning, and reviewing the team ... Experience with Ruby on Rails Benefits: * Competitive salary and benefits package * Flexible ...

Data Engineer

Chicago, IL · On-site +1

$100K - $145K/yr

Supervise junior members of the data engineering team. Guiding, planning, and reviewing the team ... Experience with Ruby on Rails Benefits: * Competitive salary and benefits package * Flexible ...

Work primarily in Ruby on Rails or Python, showcasing proficiency and contributing to high-quality ... Support junior engineers through guidance and collaboration, fostering a culture of continuous ...

Work primarily in Ruby on Rails or Python, showcasing proficiency and contributing to high-quality ... Support junior engineers through guidance and collaboration, fostering a culture of continuous ...

Work primarily in Ruby on Rails or Python, showcasing proficiency and contributing to high-quality ... Support junior engineers through guidance and collaboration, fostering a culture of continuous ...

Guide junior engineers on best practices through mentoring, pair programming, and code reviews ... Ruby The annual base salary range for this position is $150,000 to $250,000 depending on the ...

Staff Software Engineer

Chicago, IL · On-site +1

$175K - $190K/yr

Experience mentoring junior developers * Strong debugging and problem-solving skills * Strong ... Ruby on Rails and React * Methodology: Agile * Infrastructure: MySQL, S3, Redis, Elasticsearch ...

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Junior Ruby Developer information

See Chicago, IL salary details

$24.7K

$91.7K

$141.8K

How much do junior ruby developer jobs pay per year?

As of Jul 26, 2026, the average yearly pay for junior ruby developer in Chicago, IL is $91,730.00, according to ZipRecruiter salary data. Most workers in this role earn between $69,100.00 and $89,700.00 per year, depending on experience, location, and employer.

What kind of projects or tasks can a Junior Ruby Developer expect to work on in their first year?

As a Junior Ruby Developer, you’ll typically assist with maintaining and enhancing existing Ruby on Rails applications, fixing bugs, and contributing to new feature development under the guidance of more experienced team members. Your daily tasks may include writing unit tests, reviewing code, and working closely with front-end developers, designers, and QA professionals to deliver project requirements. Over time, you may be given ownership of smaller features or modules as your skills grow. This role offers an excellent opportunity to learn industry best practices and gradually take on more complex responsibilities in a supportive environment.

What is a Junior Ruby Developer job?

A Junior Ruby Developer is an entry-level software developer who primarily works with the Ruby programming language and frameworks like Ruby on Rails. They assist in writing, testing, and maintaining code, fixing bugs, and collaborating with senior developers to build web applications. Junior Ruby Developers are expected to have a basic understanding of object-oriented programming, databases, and version control systems like Git. Their role is to learn and grow while contributing to software projects under supervision.

What are the key skills and qualifications needed to thrive in the Junior Ruby Developer position, and why are they important?

To thrive as a Junior Ruby Developer, you need a solid understanding of Ruby programming, basic web development concepts, and familiarity with relational databases, often supported by a relevant degree or coding bootcamp experience. Experience with frameworks like Ruby on Rails, version control systems like Git, and basic testing tools is common and highly valued. Strong problem-solving skills, effective communication, and a willingness to learn from feedback help junior developers excel in collaborative environments. These skills and qualities are vital for building robust applications, integrating smoothly with teams, and advancing technical expertise.

What are the most commonly searched types of Ruby Developer jobs in Chicago, IL? The most popular types of Ruby Developer jobs in Chicago, IL are:
Infographic showing various Junior Ruby Developer job openings in Chicago, IL as of July 2026, with employment types broken down into 100% Full Time. Highlights an 75% In-person, and 25% Remote job distribution, with an average salary of $91,730 per year, or $44.1 per hour.
Junior Quantitative Trader (Asian Market Hours)

Junior Quantitative Trader (Asian Market Hours)

Old Mission

Chicago, IL

$125K - $150K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 7 days ago


Job description

About The Position

Old Mission Capital, a quantitative proprietary trading firm, is currently recruiting a Junior Quantitative Trader (Asian Market hours) to join our Chicago office. Our traders work in teams to seek out and profitably trade mispriced securities. The junior trader needs to be driven and have a passion for understanding how things work. The job responsibilities will include disciplined decision making, risk management, derivative pricing, and researching new opportunities for profitable businesses. Passion for trading is critical! Besides meeting the qualifications the most successful candidates will have a strong desire to understand how things work. You should have a deep interest in the financial markets and want to join a collaborative team. We value each other's ideas and have the mindset to continuously improve and build towards the future.

Responsibilities 

  • Monitor systems and manage all trading activity between Sunday - Thursday from 4:00 pm - 3:00 am CST.
  • Oversee and manage the trade execution and risk of complex trading portfolios across the firm.
  • Implement trading strategies that leverage technology to efficiently execute trades at minimum transactional costs.
  • Research potential trading opportunities.

Required Skills 

  • A degree in a quantitative field such as computer science, engineering, or one of the hard sciences.
  • Proficiency with at least one of the following languages: Python, C++, JAVA, VBA, R, Matlab or Ruby
  • 2+ years of relevant trading experience.
  • Experienced with automated trading systems.
  • Proven trustworthiness and performance under the highest ethical standards.
  • Great attention to detail.
  • Ability to solve problems in a high-pressure environment.
  • Superior written and verbal communication skills.
  • Must be self-motivated, dependable, responsible and results driven.
  • Maintain integrity at all times.
  • A desire to work Asian market hours. Work hours will include US holidays if the international markets are open.
  • A strong work ethic and ability to adapt quickly in a fast-paced environment.

Benefits and Perks

  • Fully paid Medical, Dental, Vision, Disability, and Life Insurance
  • Fully stocked kitchen; free breakfast and lunch every day on-site
  • Tuition Reimbursement Program
  • 401(k) with employer match
  • Paid Vacation, Sick, and Parental leaves
  • Commuter and Flexible Spending Programs

Base Salary Range 

$125,000 - $150,000 - Salaries are based on numerous factors such as skills, experience, and education. Our compensation package also includes a discretionary bonus and a comprehensive benefits program for full-time employees. For more information, reach out to your recruiter.Â