Tech Lead

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

Job Summary

We are seeking a skilled Python Platform Developer to join our engineering team. You will be responsible for building, optimizing, and maintaining the core backend infrastructure and internal platforms that power our applications. The ideal candidate will build scalable API architectures, enhance data security, and implement automation to improve developer productivity. 

Key Responsibilities

• Platform Development: Design, develop, and maintain robust and scalable backend services, API frameworks, and shared libraries using Python.
• Infrastructure Automation: Build and maintain tools for infrastructure automation using technologies such as AWS (Lambda, EC2, S3), Docker, and Infrastructure as Code (IaC) tools like Terraform or CloudFormation.
• Performance Optimization: Improve system performance, low-latency API interactions, and data storage solutions.
• CI/CD Optimization: Develop, maintain, and improve automated testing and continuous integration/continuous deployment (CI/CD) pipelines.
• Collaboration: Work closely with product engineers, DevOps, and frontend developers to define requirements and deliver reliable infrastructure solutions.
• Security & Monitoring: Implement strong security protocols and monitoring solutions (e.g., Prometheus, Datadog) to ensure platform reliability. 

Required Skills and Qualifications

• Education: Bachelor’s degree in Computer Science, Engineering, or a related field.
• Experience: 3–5+ years of experience in software development with a heavy focus on Python.
• Core Python: Deep understanding of Python 3.x, object-oriented programming (OOP), and asynchronous programming (e.g., asyncio).
• Frameworks: Hands-on experience with web frameworks like FastAPI, Django, or Flask.
• Cloud Platforms: Experience with AWS or GCP services.
• Tools: Proficient with Git, Docker, and CI/CD pipelines.
• Database: Strong knowledge of SQL and database management. 

Preferred Skills

• Experience with serverless architectures.
• Knowledge of Kubernetes.
• Experience in a DevOps or Site Reliability Engineering (SRE) role.

We are seeking a skilled MERN Full Stack Developer to join our dynamic team. The ideal candidate will be proficient in both front-end and back-end technologies and possess a passion for developing high-quality web applications. As a MERN Full Stack Developer, you will be responsible for designing, developing, and maintaining robust web applications using the MERN stack.

Responsibilities:

• Collaborate with cross-functional teams to define, design, and ship new features.
• Develop user-facing features using React.js.
• Build reusable components and front-end libraries for future use.
• Design and implement responsive user interfaces.
• Develop and maintain server-side architecture using Node.js and Express.js.
• Integrate data storage solutions using MongoDB.
• Implement RESTful APIs and GraphQL for efficient communication between front-end and back-end systems.
• Optimize applications for maximum speed and scalability.
• Implement security and data protection measures.
• Troubleshoot and debug issues across the entire stack.
• Stay up-to-date with emerging technologies and best practices.

Requirements:

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent work experience).
• Proven experience as a Full Stack Developer or similar role.
• Strong proficiency in JavaScript and its modern ES6+ syntax.
• Extensive experience with React.js and its core principles.
• Experience with popular React.js workflows (such as Flux or Redux).
• Solid understanding of server-side development using Node.js and Express.js.
• Experience with NoSQL databases, particularly MongoDB.
• Familiarity with RESTful APIs and GraphQL.
• Knowledge of authentication and authorization mechanisms.
• Experience with version control systems (e.g., Git).
• Excellent communication and collaboration skills.
• Ability to work independently and as part of a team in a fast-paced environment.
• Strong problem-solving skills and attention to detail.

Preferred:

• Experience with cloud platforms (e.g., AWS, Azure, Google Cloud).
• Knowledge of containerization and orchestration technologies (e.g., Docker, Kubernetes).
• Familiarity with CI/CD pipelines.
• Experience with testing frameworks (e.g., Jest, Mocha).
• Understanding of Agile methodologies.