Demo

Ruby/Flutter Developer

NinjaHoldings
Chicago, IL Remote Full Time
POSTED ON 3/8/2025
AVAILABLE BEFORE 5/8/2025

NinjaHoldings was founded in 2017 by a team seeking to revolutionize the way everyday Americans interact with financial services. Through our CreditNinja and NinjaCard brands, we empower people overlooked by traditional financial institutions to take control of their finances via a full suite of digital banking and lending products, providing incentives and rewards along the way as we guide them on a path to financial improvement. Through our EDGE brand, we help companies better understand their customers by offering a package of bespoke underwriting, fraud detection, and analytics services. With offices in Chicago, Miami, and around the world through the power of remote work, we are a lean and innovative team always seeking like-minded talent to join us in our fight to disrupt consumer finance.

Job Summary

We are a Fintech company looking for a skilled Full Stack Developer with expertise in Flutter for mobile application development and Ruby on Rails for backend API development. The ideal candidate will be responsible for designing, developing, and maintaining high-quality mobile applications and robust backend systems that power our products.

Key Responsibilities:

Mobile Development

  • Develop and maintain cross-platform mobile applications using Flutter.
  • Collaborate with UI/UX designers to implement intuitive and responsive user interfaces.
  • Optimize application performance and ensure smooth user experiences

Backend Development

  • Design, develop, and maintain RESTful APIs using Ruby on Rails
  • Ensure the scalability, security, and reliability of backend services
  • Integrate third-party services and APIs as needed

Full Stack Collaboration

  • Work closely with frontend developers, designers, and other stakeholders to deliver cohesive and high-quality products
  • Participate in code reviews, testing, and debugging to maintain code quality and performance
  • Implement best practices in software development, including version control, documentation, and agile methodologies

Continuous Improvement

  • Stay up-to-date with the latest industry trends and technologies
  • Identify and implement improvements to enhance development processes and product features

Requirements:

Experience

  • 3 years of professional experience in full stack development
  • Proven experience with Flutter for mobile application development
  • Strong proficiency in Ruby on Rails for backend API development

Technical Skills

  • Solid understanding of mobile app architecture and lifecycle
  • Experience with RESTful API design and implementation
  • Proficiency in database design and management (e.g., PostgreSQL, MySQL)
  • Familiarity with version control systems (e.g., Git)

Soft Skills

  • Excellent problem-solving abilities and attention to detail
  • Strong communication and teamwork skills
  • Ability to manage multiple tasks and meet deadlines in a fast-paced environment

Additional Pluses, but not requirements:

  • Experience with AWS
  • Knowledge of DevOps practices and CI/CD pipelines
  • Building and/or maintaining Fintech or banking applications

Benefits:

  • Competitive salary and benefits package
  • Flexible, remote work
  • Fun, fast-paced work environment
  • Dynamic start-up culture
  • Convenient downtown Chicago office located in the heart of the city
  • Equal opportunity employer

IMPORTANT NOTICE:

Please carefully review communications to ensure that they are from the official Breezy applicant tracking platform (@breezy-mail.com) or an official NinjaHoldings brand email: @ninjaholdings.com, @creditninja.com, @ninjacard.com, or @edgescore.com. If you have been contacted regarding a job opening at NinjaHoldings from any other email address, including similar email variations, this is NOT a trusted source. We recommend that you refrain from responding to suspicious emails and file a complaint with the FBI's Internet Crime Complaint Center (IC3) at https://www.ic3.gov. For questions or to confirm the authenticity of a communication, please email hr @ninjaholdings.com.

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