Ruby On Rails Developer Contract Jobs in Antelope, CA

What We Need

Corpay is currently looking to hire a Mobile Architect within our Corpay Complete division. This position falls under our Commercial Cards line of business and is in Elk Grove, CA. This role will contribute to the design, development, testing, and support of our mobile applications across iOS and Android, with a primary focus on React Native development. The ideal candidate will bring strong hands-on experience building mobile applications, solid engineering fundamentals, and the ability to work effectively in a collaborative product environment. This is a great opportunity for an engineer who enjoys building user-facing features, integrating with backend services, and improving mobile application quality and performance. As a Mobile Engineer, you will work closely with product managers, designers, backend developers, and QA teams to deliver high-quality mobile features. This role is best suited for someone who is comfortable working in an agile environment, contributing to technical discussions, and taking ownership of features from development through release.  In this role, you will report directly to the Engineering Manager in the Corpay Complete division.

How We Work

As a Mobile Architect, Corpay will set you up for success by providing:

• Assigned workspace in Elk Grove office
• Company-issued equipment 

Role Responsibilities

The responsibilities of the role will include:

• Developing and maintaining mobile application features using React Native
• Building user experiences across iOS and Android for workflows such as expenses, approvals, receipts, cards, and account management
• Integrating mobile applications with backend APIs and services
• Writing clean, maintainable, and well-tested code
• Participating in code reviews, technical discussions, and sprint planning
• Troubleshooting defects, performance issues, and production incidents
• Supporting mobile capabilities such as push notifications, file and image uploads, secure authentication, and device permissions
• Partnering with QA and product teams to ensure high-quality releases
• Contributing to ongoing improvements in app performance, reliability, usability, and developer workflows
• Assisting with release preparation, regression validation, and post-release support

Qualifications & Skills

• 4+ years of software engineering experience
• 2+ years of hands-on React Native development experience
• Strong experience with JavaScript and/or TypeScript
• Experience building and shipping production mobile applications for iOS and Android
• Experience integrating mobile applications with REST APIs and backend services
• Familiarity with common mobile development patterns including navigation, state management, asynchronous data handling, and form-based workflows
• Experience debugging issues across devices, simulators, and mobile environments
• Understanding of mobile app lifecycle, performance considerations, and platform-specific behaviors
• Experience with unit, component, or end-to-end testing for mobile applications
• Ability to work effectively in a team environment and communicate clearly with technical and non-technical stakeholders
• BA/BS in Computer Science, Software Engineering, or equivalent practical experience

Preferred Qualifications

• Experience with enterprise SaaS, fintech, payments, expense management, or AP automation platforms
• Experience with push notifications, secure storage, biometric authentication, or camera/document upload workflows
• Familiarity with mobile app release processes for the App Store and Google Play
• Exposure to backend technologies such as Ruby on Rails and cloud-based application environments
• Experience working in a fast-paced product organization with evolving priorities

Benefits & Perks 

• Medical, Dental & Vision benefits available the 1st month after hire 

• Automatic enrollment into our 401(k) plan (subject to eligibility requirements) 

• Virtual fitness classes offered company-wide 

• Robust PTO offerings including major holidays, vacation, sick, personal, & volunteer time 

• Employee discounts with major providers (i.e. wireless, gym, car rental, etc.) 

• Philanthropic support with both local and national organizations 

• Fun culture with company-wide contests and prizes 

Pay Transparency

The expected salary range for this position is $129,400 – $161,800 based on the candidate’s work location. This range reflects a good faith estimate of the expected compensation for this role at the time of posting. The final offer will be determined based on job-related factors including skills, experience, qualifications, and applicable market conditions. Compensation may vary based on geographic location and will be confirmed during the hiring process. Additional compensation and benefits, including incentive programs, health coverage, retirement plans, paid time off, and other benefits (where applicable), may also be provided.