Senior Engineer — Ruby on Rails

Senior AI Engineer — Ruby on RailsTechjays · Coimbatore / Chennai · Hybrid · Immediate – 30 Days NoticeAbout TechjaysWe're the AI Reimagination Company — and that's not a tagline we put on a deck. It's what we actually do.Techjays helps global enterprises rebuild the way they operate using AI at the core: not as a pilot, not as a feature, but as a foundational layer across products, workflows, and infrastructure. We're an Anthropic partner, which means our engineers get early access to frontier models and tools before they hit the market.Our team includes engineers and leaders from Google, Akamai, NetApp, ADP, Cognizant Consulting, and Capgemini. We run like a high-agency startup, but we build production systems that real enterprise clients depend on.Every project is greenfield. Every line of code you write ships.What This Role Actually IsThis isn't a "keep the monolith alive" job.You'll be designing and building new AI-powered features, integrating LLM APIs into production Rails applications, and using Claude Code as a core part of your daily workflow — not as an experiment. You'll work directly with US-based enterprise clients alongside Product Managers, AI Business Consultants, and Delivery Excellence Managers.Your architecture decisions will have visible business impact.What You'll OwnDesign, build, and maintain production-grade Ruby on Rails applications for US enterprise clients — from architecture to deploymentIntegrate LLM APIs (Claude, GPT-4, Gemini) into the Rails stack, building AI-powered features that drive real business outcomesUse Claude Code daily as your AI development partner — for generation, debugging, documentation, and velocityBuild responsive, performant React front-ends from wireframes and design specsOwn RESTful and GraphQL API design for client applications and third-party integrationsDrive database design and optimisation — schema, queries, indexing, and migrations on PostgreSQL/MySQLLead code reviews and raise the technical bar through constructive feedbackDocument architecture decisions, API contracts, and implementation patternsMust-Haves6+ years of deep, production-grade Ruby on Rails experience — advanced framework patterns, background jobs (Sidekiq/Redis), design patterns, best practicesHands-on experience with Claude Code (Anthropic) for AI-assisted development — this is central to how we buildStrong React skills — hooks, component architecture, state management, wireframe to productionExpert-level PostgreSQL/MySQL — schema design, query optimisation, indexing, performance tuningProven experience designing RESTful and GraphQL APIs at scaleExperience integrating third-party LLM APIs (OpenAI, Anthropic, Google Gemini) into production Rails appsStrong software architecture fundamentals — MVC, service objects, design patterns, testabilityDeep comfort with Git, Gitflow, and PR-based collaboration workflowsGood to HavePython for scripting, automation, or backend service integration alongside RailsAWS familiarity — EC2, S3, RDS, Lambda — for deployment and infrastructureMongoDB or NoSQL in polyglot persistence architecturesVector databases (Pinecone, pgvector, Weaviate) for LLM application developmentLangChain, LangGraph, or similar orchestration frameworks for AI agentsSaaS multi-tenancy patterns and high-traffic web application experienceOpen source contributions or a strong public GitHub profileWhy Join TechjaysClaude Code is standard practice here, not a side experiment — you'll use it every day to ship faster and smarterAnthropic partner access — early visibility into frontier AI tools and capabilities before the market sees themGreenfield only — you'll design architecture, not inherit technical debtGlobal client exposure — your engineering decisions translate directly to measurable business outcomes for US enterprise clientsTeam pedigree — you'll learn alongside engineers who've shipped at real scale at Google, Akamai, and NetAppAI is the product here, not a feature. You'll spend your career at the intersection of software engineering and AI systemsWhat We're Looking For Beyond the ResumeBuilder mindset — you think in systems, not ticketsOwnership — you take features from idea to productionStructured thinking in ambiguous, fast-moving environmentsClear communicator, collaborative team playerWhat We OfferCompetitive compensationHybrid work — Coimbatore office or remote flexibilityPaid holidays and flexible time offMedical insurance for self and family (up to ₹4 Lakhs per person)Opportunity to work on production-grade AI systems for global clientsA culture built on clarity, integrity, and continuous growthLocation: Coimbatore / Chennai — Hybrid Notice Period: Immediate to 30 days preferred