Mohammad Shahnawaz

Languages: Ruby, JavaScript (Vanilla, jQuery), HTML5, CSS3, SQL Frameworks / Libraries: Ruby on Rails (5.x, 6.x, 7.x, 8.x), React.js, Angular 8, Redux, Active Merchant, Bootstrap, TailwindCSS, Databases / Storage: PostgreSQL, MySQL, SQL, MongoDB, Redis, ElasticSearch, SQLite3, SQL APIs / Integrations: RESTfulAPIs, GraphQL (building and consumingAPIs), Stripe Connects, Google My BusinessAPI, 3rd Party Testing & Debugging: RSpec (writing, debugging, maintaining test cases), Unit Testing, TDD (Test-Driven Development), BDD DevOps / Cloud / Deployment: Docker, Heroku, AmazonAWS, DigitalOcean, CI/CD Authentication & Background Jobs: Devise, Redis (for caching & sessions), Sidekiq, Resque Version Control & Collaboration Tools: Git / GitHub, Bitbucket, JIRA, Sublime Text, Visual Studio Code, Confluence

Led the end-to-end development of core features for a high-traffic nurse staffing platform, ensuring scalability and reliability under Engineered real-time shift scheduling and notification systems using Ruby on Rails and React.js, enhancing operational efficiency and Integrated multiple third-partyAPIs, including background checks, payroll systems, and real-time nurse license verification, ensuring Collaborated closely with cross-functional teams—product, design, and QA—to deliver seamless frontend-backend integration with Focused on performance tuning, database optimization, and secure data handling, reducing latency and improving platform respon- Implemented robust testing suites using RSpec, ensured code quality with RuboCop, and enforced scalable development practices

Architected and implemented robust, modularAPIs using Ruby on Rails, ensuring high availability, maintainability, and performance. Successfully integrated multiple third-party services including document parsers, analytics tools, and email automation for end-to-end Collaborated with clients to gather requirements and plan sprints, ensuring product and design alignment. Acted as the primary client liaison, handling requirement gathering, sprint planning, and delivery roadmaps with precision and clarity. Conducted comprehensive code reviews, managed deployments, and mentored junior developers.

Spearheaded backend development for Mrsool, one of the region's largest on-demand delivery platforms, ensuring performance and Collaborated closely with UI/UX and frontend teams to build seamless, responsiveAPIs and ensure pixel-perfect frontend-backend Integrated secure payment gateways, notification services, and real-time status tracking modules, enhancing both user trust and Maintained enterprise-grade code quality with RSpec test coverage, RuboCop standards enforcement, and active participation in peer OptimizeddatabasequeriesandcachingstrategiesusingPostgreSQLandRedis,reducingresponsetimesby40%andimprovingoverall Led deployment and monitoring onAWS, implementing CI/CD pipelines and auto-scaling infrastructure to handle traffic spikes

Progressedfrommid-leveltoseniordeveloper,consistentlydeliveringhigh-impactsolutionsacross10+successfulclientprojectsusing Played a key role in architectural planning, designing scalable systems, and implementing efficient backend logic with clean, modular Designed and optimized complex relational database schemas to support feature-rich applications, ensuring performance and main- Led full-stack development initiatives, collaborating with UI/UX teams to deliver polished, end-to-end user experiences. Mentored and trained interns and junior developers, fostering technical growth and ensuring adherence to best development practices.

Developed and maintained core features of the NurseIO healthcare staffing platform using Ruby on Rails and ReactJS. Built and optimized backendAPIs to support real-time clinician-facility connections and scheduling. Implemented third-party integrations for payments, notifications, and communication modules. Contributed to scalable architecture and performance optimization, ensuring seamless user experience under high traffic.

Engineered and maintained core features of the Mrsool on-demand delivery platform using Ruby on Rails and ReactJS. Designed and optimized PostgreSQL database schemas for high scalability and performance. Built and integrated GraphQLAPIs to streamline data fetching and improve front-end performance. Implemented RSpec test suites to ensure code reliability, reducing bugs and enhancing system stability.

Developed and maintained patient-centered healthcare platform using Ruby on Rails and ReactJS, ensuring smooth user experience Implemented SQL and Node.js services to support secure medical data handling and efficient appointment management. Applied TDD/BDD practices with RSpec to deliver high-quality, bug-free features in line with healthcare compliance standards. Migrated and deployed applications on Heroku, ensuring scalability, uptime, and seamless integration of new modules.

Designed and optimized scalable Ruby on Rails applications supporting nationwide legal access services, ensuring reliability and Built and integrated RESTfulAPIs to streamline communication between client portals, legal professionals, and backend systems. Established CI/CD pipelines for automated testing and deployment, improving release cycles and reducing production issues. Led development efforts followingAgile/Scrum methodology, collaborating with cross-functional teams to deliver high-quality legal

Engineered and maintained Ruby on Rails backend services with seamless integration of third-party tools, ensuring scalable and secure Implemented Stripe Connect payment solutions for smooth transactions and revenue sharing between users and partners. Developed dynamic front-end features usingAngular, Redux, CSS, and JavaScript, enhancing user engagement and responsiveness. Built and executed comprehensive unit testing suites, improving code quality, reliability, and reducing post-release defects.

Architected and enhanced Ruby on Rails backend systems, ensuring scalability and performance to support millions of global users Developed ReactJS and JavaScript-based front-end components with responsive UI using Bootstrap, improving user experience across Implemented MongoDB database solutions with optimized queries and indexing for high-volume data storage and retrieval. Deployed and maintained application infrastructure onAWS cloud, ensuring high availability, reliability, and cost efficiency.