Let us discuss your requirement in more detail as I have read your requirement and it matches the skillset which I carry. Here is a brief about me:
I have 12+ yrs. of exp. developing, deploying, and managing RoR applications in various domains like Microfinance, Real Estate, social media, Healthcare, etc. I also specialize in Agile & Scrum with following certifications under my belt - DevOps Certified Culture Trainer (DCCT), ICP -ACC (Agile Coach), SAFe 4.0 specialist, CSP - SM (Certified Scrum Professional - Scrum Master), CSM (Certified Scrum Master), TKP (Team Kanban Practitioner), KMP - I & II (Kanban System Design & Kanban Management Professional), DA (Disciplined Agilist), DevOps Architect, PSK (Professional Scrum with Kanban) & SPS (Scaled Professional Scrum with Nexus). I am also an Ethical Hacker. I have experience in delivering RoR application end-to-end which starts from gathering requirements from the client, designing the architecture of the application & database, development, deployment and then maintenance all by myself. I have led a team of more than 80 developers contributing to a single application.