Fullstack Developer

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

Strong Full Stack Engineer profiles

Mandatory (Experience 1) – Must have 1+ years of hands-on full stack engineering experience (avoid frontend-heavy only profiles, backend heavy will work)

Mandatory (Experience 2) – Must have strong backend engineering experience using Python, including designing and owning APIs, services, and data models in production environments

Mandatory (Experience 3) – Must have strong frontend development experience using React (or equivalent), including component architecture, state management, and building production-grade user interfaces

Mandatory (Experience 4) – Must have end-to-end ownership experience, building and shipping features across the full stack (UI + API + database) without clear handoff boundaries

Mandatory (Experience 5) – Must have strong web fundamentals, including understanding of browser rendering, performance optimization, and accessibility best practices

Mandatory (Experience 6) – Must be able to demonstrate solving complex problems on both frontend and backend, clearly articulating trade-offs, decisions, and outcomes

Mandatory (Experience 7) – Must have solid experience with databases (SQL/NoSQL), including schema design, query optimization, and handling performance bottlenecks

Mandatory (Company) - Top Product Companies, (preferred early-stage startups with Seed to Series C/D with fast-paced shipping culture)

Mandatory (Education) - Tier-1 institutes (IITs, BITS, IIITs), Can be skipped if from Top notch product companies

Responsibilities

• Build and maintain frontend applications using Next.js, React, TypeScript, and TailwindCSS
• Design and develop RESTful APIs using Node.js and Express.js
• Integrate frontend with backend APIs efficiently
• Write clean, reusable, and well-documented code
• Optimize applications for performance, SEO, and scalability
• Work with databases to design schemas and write optimized queries
• Implement authentication, authorization, and role-based access
• Debug, test, and improve existing systems
• Collaborate with designers and product managers to translate requirements into technical solutions
• Participate in code reviews and technical discussions

Job description

At FR8 we believe in improving the lives of truck owners by providing more loads to his trucks. Our endeavor is to ensure 2 million Indian truck owners get the load they want with assured payments. With this spirit we take challenges head-on, explore new opportunities and rewrite the rules of the transportation industry.

Role: Javascript Developer

Required Technical Skill Set: java script, React.Js, Node.Js

Location : Chennai

Experience: 2-5 years

Desired Competencies (Technical/Behavioral Competency)

Must-Have:

proficient in both front and back end coding.

Seeing through a project from conception to finished product.

Familiarity with JavaScript frameworks such as Node JS, React JS

Passion for coding and startups, willing to work long hours in challenging tasks

Good analytical skills and basics knowledge of programming

To know more,

visit our website www.fr8.in

We are searching for Full Stack PHP Developers to join our Tech team. You will work as a part of a Full-stack Tech team that is responsible for all aspects of the ongoing product & services development from the initial specification, through to developing, testing, and launching.

You will be responsible for building multiple platforms; integrating new templates/themes on the platform, maintain the platform etc – end to end development & maintenance of the products & services along with your team of developers.

● PHP 5 or later, MVC frameworks such as Laravel, Code Igniter
● Web services, REST API
● Candidate should have sound knowledge/understanding of Front-end technologies such as HTML & CSS,
JQuery Ajax, Node.js, React JS, Responsive design.
● Server management knowledge such as AWS, apache configuration, linux apt-get, crontab scheduling etc
● Working with MYSQL, writing stored procedures, query optimization.
● Problem solver and go getter
● Write clean, readable code and tests
● Skills of development of basic mobile apps is an addon.
● Candidate's role will require them to communicate with project managers, clients solution architects in the
team and overseas counterparts.
● Be a self-motivated, independent, detail oriented, responsible team-player and exhibit exceptional
relationship management skills
● Help TL/PM in project estimations as & when required

Mandatory Skill set:

• Multiple solution stack development experience along with MEAN(Mongo, Express, Angular and Node)

• Python with any web framework

• Micro Services, Performance Engineering, Docker, Kubernetes, AZURE, CI/CD pipeline, , MySQL and Database design

Job Role:

• Responsible for component selection, design standardization, common library building.

• Build services and templates based on published standard (RFC type)Build coding templates and architypes adhering to design standard.

• Understand NFR and define architecture, design and validation for each NFR element.

• Design data model, service contract and document framework.Define and ensure coding standards

• Define and ensure UI standards are followed. Design micro services, security, deployment Well-versed in module level effort estimationWell-versed in application integration patterns Exposure to bug fixing, maintenance, continuous integration releases.

• Exposure to building architectural view like logical, physical and deployment.Exposure to performance bottleneck, RCA and remediation.Exposure to security issues, RCA and remediation.

Process Exposure:

• Able to interact with team, stakeholders and architects. Understand functional requirements and create design documents for features.

• Participate in sprint planning and story elaboration sessions.

• Candidate should be able to work independently in an Agile project.

• Experience with Test-Driven Development, Integration testing and Agile processes.Code review from a standard and design adherence perspective.