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Ruby Software Engineer II

FIS
United States, Illinois, Chicago
Dec 10, 2025

Position Type :

Full time

Type Of Hire :

Experienced (relevant combo of work and education)

Education Desired :

Bachelor of Computer Engineering

Job Description

We are FIS. Our technology powers the world's economy and our teams bring innovation to life. We champion diversity to deliver the best products and solutions for our colleagues, clients and communities. If you're ready to start learning, growing and making an impact with a career in fintech, we'd like to know: Are you FIS?

NOTE:

  • This position is hybrid (3 days onsite) in our FIS Office locations in Chicago (Illinois), Milwaukee (Wisconsin), Atlanta (Georgia) and Jacksonville (Florida).
  • Current and future sponsorship not available for this position

About the Team:

We are the premiere digital transformation partner for financial institutions committed to the future of banking and to creating safe and personalized customer experiences that help people better manage their financial lives. Our fully integrated and flexible platform is built on years of digital lending experience, enabling digital agility within months and a full suite of end-to-end consumer, small business and embedded finance solutions that fit the way people want to bank.

FIS technology powers the world's economy and our teams bring innovation to life. If you are ready to start learning, growing, and making an impact with a career in fintech, we encourage you to apply. Are you FIS?

About the Role

As a Ruby Software Engineer, you will be responsible for maintaining and enhancing a stable infrastructure that is crucial to our financial technology products. Your role will focus on ensuring the reliability, performance, and scalability of our existing systems while preparing for potential migrations to new platforms. You will work closely with a dedicated team to safeguard the integrity of our software, troubleshoot issues as they arise, and support long-term strategic initiatives.

What You Will Be Doing:

  • Take ownership of maintaining and optimizing our existing Ruby-based infrastructure, ensuring it remains stable, secure, and high-performing. Monitor system health and proactively address any emerging issues.
  • Collaborate with senior engineers and architects to assess, plan, and potentially execute migrations from the current platform to a new one. Provide technical insights and support throughout the migration process to ensure a smooth transition with minimal disruption.
  • Continuously evaluate the performance of existing systems, implementing optimizations to improve efficiency, reduce latency, and enhance overall system reliability.
  • Respond to and resolve technical issues as they arise, employing a methodical approach to troubleshooting and root cause analysis. Ensure that any disruptions are addressed quickly to minimize impact on the business.
  • Work closely with cross-functional teams, including DevOps, product managers, and QA engineers, to ensure that any changes or migrations are aligned with business goals and technical requirements. Participate in agile development processes to coordinate efforts effectively.
  • Uphold high standards of code quality, security, and best practices. Conduct code reviews and contribute to the establishment and adherence to coding standards.
  • Create and maintain comprehensive documentation of existing systems, processes, and any changes made. Share knowledge with the team to ensure a smooth handover and continuity in system maintenance.
  • Stay abreast of industry trends and emerging technologies. Contribute to the company's technological roadmap by introducing innovative ideas and solutions.

What you Bring:

  • A minimum of 5+ years of experience in software engineering, with a strong focus on Ruby or similar languages (Java or Python). Experience in SaaS or FinTech is highly preferred.
  • A degree in Computer Science, Software Engineering, or a related field is preferred.
  • Familiarity with MVC frameworks like Ruby on Rails.
  • Experience with RESTful API, GraphQL development, microservices architecture and event-driven systems is essential. Familiarity with front-end technologies like JavaScript and React is a plus.
  • Experience with project management tools like Jira and Confluence is beneficial. Familiarity with modern CI/CD pipelines and cloud platforms (e.g., AWS, GCP) is advantageous.
  • Demonstrated ability to analyze and solve complex technical problems. A track record of delivering robust and scalable software solutions.
  • Excellent collaboration and communication skills. Ability to work effectively in a team-oriented environment and contribute to a positive and inclusive workplace culture.
  • A passion for innovation and a keen interest in staying ahead of the curve with emerging technologies. Proven ability to contribute to the development of forward-thinking solutions.
  • Experience utilizing AI tools and serving as an AI champion, instrumental in building out and driving the adoption of new AI capabilities.
  • Proven experience with AI/ML tools, contributing to AI infrastructure development, and championing new AI capabilities across the organization.

What We Offer You:

  • A voice in the future of fintech.
  • Continuous learning and development.
  • Collaborative work environment.
  • Opportunities to give back.
  • Competitive salary and benefits.
FIS is committed to providing its employees with an exciting career opportunity and competitive compensation. The pay range for this full-time position is $95,190.00 - $159,900.00 and reflects the minimum and maximum target for new hire salaries for this position based on the posted role, level, and location. Within the range, actual individual starting pay is determined by additional factors, including job-related skills, experience, and relevant education or training. Any changes in work location will also impact actual individual starting pay. Please consult with your recruiter about the specific salary range for your preferred location during the hiring process.

Privacy Statement

FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice.

EEOC Statement

FIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is available here supplement document available here

For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test. ADA Disclaimer: In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or may not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case-by-case basis.

Sourcing Model

Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.

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