Senior Software Engineer

Senior AI Engineer — Ruby on Rails

Techjays · Coimbatore / Chennai · Hybrid · Immediate – 30 Days Notice

About Techjays

We'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 Is

This 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 Own

• Design, build, and maintain production-grade Ruby on Rails applications for US enterprise clients — from architecture to deployment
• Integrate LLM APIs (Claude, GPT-4, Gemini) into the Rails stack, building AI-powered features that drive real business outcomes
• Use Claude Code daily as your AI development partner — for generation, debugging, documentation, and velocity
• Build responsive, performant React front-ends from wireframes and design specs
• Own RESTful and GraphQL API design for client applications and third-party integrations
• Drive database design and optimisation — schema, queries, indexing, and migrations on PostgreSQL/MySQL
• Lead code reviews and raise the technical bar through constructive feedback
• Document architecture decisions, API contracts, and implementation patterns

Must-Haves

• 6+ years of deep, production-grade Ruby on Rails experience — advanced framework patterns, background jobs (Sidekiq/Redis), design patterns, best practices
• Hands-on experience with Claude Code (Anthropic) for AI-assisted development — this is central to how we build
• Strong React skills — hooks, component architecture, state management, wireframe to production
• Expert-level PostgreSQL/MySQL — schema design, query optimisation, indexing, performance tuning
• Proven experience designing RESTful and GraphQL APIs at scale
• Experience integrating third-party LLM APIs (OpenAI, Anthropic, Google Gemini) into production Rails apps
• Strong software architecture fundamentals — MVC, service objects, design patterns, testability
• Deep comfort with Git, Gitflow, and PR-based collaboration workflows

Good to Have

• Python for scripting, automation, or backend service integration alongside Rails
• AWS familiarity — EC2, S3, RDS, Lambda — for deployment and infrastructure
• MongoDB or NoSQL in polyglot persistence architectures
• Vector databases (Pinecone, pgvector, Weaviate) for LLM application development
• LangChain, LangGraph, or similar orchestration frameworks for AI agents
• SaaS multi-tenancy patterns and high-traffic web application experience
• Open source contributions or a strong public GitHub profile

Why Join Techjays

• Claude Code is standard practice here, not a side experiment — you'll use it every day to ship faster and smarter
• Anthropic partner access — early visibility into frontier AI tools and capabilities before the market sees them
• Greenfield only — you'll design architecture, not inherit technical debt
• Global client exposure — your engineering decisions translate directly to measurable business outcomes for US enterprise clients
• Team pedigree — you'll learn alongside engineers who've shipped at real scale at Google, Akamai, and NetApp
• AI is the product here, not a feature. You'll spend your career at the intersection of software engineering and AI systems

What We're Looking For Beyond the Resume

• Builder mindset — you think in systems, not tickets
• Ownership — you take features from idea to production
• Structured thinking in ambiguous, fast-moving environments
• Clear communicator, collaborative team player

What We Offer

• Competitive compensation
• Hybrid work — Coimbatore office or remote flexibility
• Paid holidays and flexible time off
• Medical insurance for self and family (up to ₹4 Lakhs per person)
• Opportunity to work on production-grade AI systems for global clients
• A culture built on clarity, integrity, and continuous growth

Location: Coimbatore / Chennai — Hybrid Notice Period: Immediate to 30 days preferred

• 2 years of strong development background building complex applications.
• Proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
• Experience building applications using NodeJS and frameworks such as Express.
• Thorough understanding of React.js and NodeJS including its core principles.
• Ability to understand business requirements and translate them into technical requirements.
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial).
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Strong experience with MongoDB, Postgres
• Developing new user-facing features using React.js
• Thorough understanding of React.js & popular Workflows (such as Flux or Redux)
• Building reusable components and front-end libraries for future use

Qualifications:

BTech/BE in computer science, electrical, electronics or related fields 5+ years of full stack design and development experience High emotional intelligence, empathy and collaborative approach. Experience in Angular Javascript frameworks, CSS, HTML5, NodeJS, ExpressJS, MongoDB to handle full stack web development. Experience with developing rich dynamic front end applications using Angular and CSS frameworks like BulmaCSS, Angular Material, Bootstrap, etc. Knowledge of GraphQL would be an added advantage. Knowledge of Cloud services like AWS, Heroku, Azure is preferable. Should be a quick learner to keep up with the pace of the ever changing world of technology as the candidate will get excellent exposure to the latest and trending Cloud based Saas technologies and best practices while working with varied customers based across the globe.

Responsibilities:

Develop web applications covering end to end software development life cycle right from writing UI code using Angular to backend API code using NodeJS and managing databases like MongoDB, MySQL, etc. Involved in full stack code management from Git check-ins to running automated builds and deployments using DevOps practices to deploy to public cloud services like AWS, Azure, Heroku, etc. Handling full-stack web development workflow right from front end to backend to CI/CD workflows. Design and Develop the tech architecture and work closely with CEO and CTO of the company Drive and guide with work of other engineers on the team

This is a leadership role and candidate is expected to wear multiple technical hats including customer interactions and investor discussions

As a full stack engineer, you will build new features for our internal tools, including https://medium.com/@Smartcow_ai/tlt-lightning-ff47659f7804">lightning. Architect, develop, test, and deliver independently.

Responsibilities

• Design, test, build and deploy web applications for internal and external use
• Design and implement scalable APIs and backend services
• Convert high-level requirements into detailed, usable and intuitive UI
• Involved in the execution of project from design stage

Skills: 

• 3+ years full-stack python developer with exposure to web frameworks like Django or Flask
• Experience building APIs for rapidly iterating product and restful APIs and development of service layer using python's flask framework
• Proficient in writing unit test cases using Pytest package
• Proficient on Reactjs, Angular, & VueJs (GTH),
• Knowledge of DB and API schema designing
• Knowledge with OpenCV and ML workflow is added advantage
• HTML/CSS/JavaScript and JavaScript framework
• Database level programming using both SQL (MySQL, PostgreSQL) and No SQL (MongoDB/Casandra) and designing the database level stored procedures and persistence logic.
• Knowledge with Nvidia libraries is an added advantage
• Experience working with Web Application development, docker, Unix/Linux environments
• Understanding of machine learning, information retrieval, neural networks, networking, developing large software systems (stands out from crowd)

passion for building and delivering great software with a strong sense of ownership.

• 4+ years of experience in building web applications using React, Node.js, GraphQL integrations with NoSQL or relational database systems.
• Working experience in building and deployment applications on AWS platform a plus.
• Working experience on docker and microservice a plus.
• Strong experience with Build and Release, Agile processes and Estimation/Planning
• Must have strong debugging and troubleshooting skills, with solid understanding of logging and exception handling.