Senior Ruby on Rails

Job Description Position Overview We are looking for an experienced Senior Ruby on Rails Backend Engineer to architect and maintain the robust backend infrastructure for our client's influencer marketing superapp. You will be building scalable APIs and backend services that power the platform, managing complex data flows between mobile apps, social media platforms, and payment systems while ensuring high performance and reliability for a growing user base. Key Responsibilities Backend Architecture & API Development: Design and implement RESTful and GraphQL APIs for the Ruby on Rails backend serving mobile and web applications. Build and maintain scalable backend architecture supporting platform features and future growth. Architect data flow systems managing real-time communication between mobile apps, web platform, and database layers. Optimize Rails application performance for handling high-volume API requests from 5,000+ influencers and brands. Core Platform Development Develop and maintain backend endpoints for influencer-brand matching, campaign management, and content tracking Create data processing pipelines for social media metrics, engagement analytics, and campaign performance Build webhook systems for real-time updates from social media platforms (Meta, TikTok) and payment notifications Implement caching strategies using Redis for frequently accessed data and API response optimization Database & Data Management Design and optimize PostgreSQL database schemas for influencer profiles, campaigns, and performance data storage Implement efficient data querying strategies for large-scale influencer, brand, and campaign data Build robust data models supporting analytics, reporting, and business intelligence requirements Create data migration strategies ensuring zero-downtime deployments for feature rollouts Third-Party Integrations Integrate and manage APIs for Meta Business API, TikTok Business API, and other social media platforms Build and maintain Stripe payment API integration for transaction processing and revenue tracking Implement Firebase integration for real-time mobile app communication and analytics Create robust error handling and retry mechanisms for external API failures Performance & Scalability Optimize Rails application performance using background job processing (Sidekiq/Resque) for heavy operations Implement horizontal scaling strategies for handling variable load from mobile apps and campaigns Build monitoring and logging systems for backend performance, API health, and error tracking Create automated testing suites ensuring backend reliability during feature deployments Required Skills & Qualifications - Ruby on Rails Expertise: Advanced proficiency in Ruby on Rails (5.x/6.x/7.x), Ruby language, Rails conventions and best practices - API Development: Expert-level RESTful API and GraphQL design, API versioning, documentation (Swagger/OpenAPI) - Database Skills: Advanced PostgreSQL knowledge, complex query optimization, database design, ActiveRecord mastery - Background Processing: Extensive experience with Sidekiq, Resque, or similar job processing frameworks - Caching & Performance: Proficiency with Redis, Memcached, Rails caching strategies, performance optimization - Third-Party APIs: Experience integrating social media APIs, payment gateways, and external services Educational Qualifications Bachelor & master's in computer science, Software Engineering, or related technical field. Preferred Experience - 5+ years in Ruby on Rails development with 2+ years in senior/lead backend roles - Knowledge of microservices architecture and service-oriented design patterns - Background in high-traffic consumer applications or marketplace platforms - Experience with real-time data processing and event-driven architectures - Understanding of social media platform APIs and influencer marketing domain - Familiarity with AI/ML integration concepts is a plus for future platform enhancements