Ruby on Rails Full-Stack Engineer

As a Ruby on Rails Full-Stack Engineer at Arche Sys, you will be embedded directly within the state MDFAMLI delivery team, focusing on the Employer Experience workstream
. In this role, you will lead the development and enhancement of critical public-facing digital services used by employers and Third-Party Administrators (TPAs)—engineering robust payment workflows, dynamic form flows, and leave administration review modules.

Arche Sys is a premier technology consulting firm specializing in enterprise cloud governance, Dev Sec Ops , and digital transformation for mission-critical public sector and commercial platforms. We take pride in driving impactful, secure, and modern digital solutions through a culture of engineering excellence and close collaboration.

This position demands a strong problem-solver with a deep commitment to clean Object-Oriented Programming (OOP) principles, automated testing, and seamless data integrations. The ideal candidate thrives in a fast-paced public sector project environment and brings hands-on expertise with Ruby on Rails, modern reactive front-end interfaces, and reliable, maintainable back-end architecture.

This is a fully remote, full-time position.

• Code Quality & Standards:Write clean, maintainable, and efficient code while following OOP, DRY, and SOLID principles. Actively participate in code reviews, providing and receiving strong, thoughtful feedback to uphold high code and maintainability standards.
• System Foundation:As this is a greenfield application, establish foundational patterns for all backend payment workflows and the flow of data into the accounting platform.
• Full-Stack Contribution:Contribute to the full-stack development of accessible and maintainable features within the application, with a strong focus on the backend.
• A
  gile
  
  Collaboration:
  
  Collaborate cross-functionally with engineers, designers, and product managers in an agile environment to refine requirements and deliver value for end-users.
• Performance:Optimize application and integration performance to ensure seamless and reliable operation.
• Mentorship & Guidance:Mentor junior developers and provide technical guidance to the team (as needed).
• Continuous Improvement:Stay up to date with the latest Ruby on Rails trends, tools, and industry best practices.

• Foster open communication with stakeholders, providing regular updates on project status and milestones.
• Act as one of the point of contact between clients, stakeholders, and development teams.
• Communicate regularly with stakeholders, including product managers, executives, and customers, to keep them informed of progress and address any concerns.

• Collaborate with various departments to ensure the seamless integration of technologies and solutions.
• Facilitate problem-solving sessions to address complex challenges and foster innovation.

Educational Background: Bachelor's degree in Computer Science, Information Technology, Engineering or a related field. A Master's degree will be considered a plus.

• Significant Rails Backend Experience (4+ years):Strong backend-leaning experience with Ruby on Rails in a production environment.
• Data Integration Expertise:Significant experience building conventional, maintainable, well-tested, and extensible data integrations and back-end functionality in Ruby on Rails.
• Financial/Accounting Systems:Experience building integrations with financial and accounting systems (direct experience with Net Suite is a significant plus).
• Payment Processing:Experience working with ACH payments is a significant plus.
• OOP Commitment:A strong commitment to and…