Senior Full Stack 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

About the Role

We are looking for a Technical Lead with 5–7 years of experience in the JavaScript/TypeScript and Node.js ecosystem to drive core platform development. This is a hands-on leadership role that requires strong backend expertise, as well as exposure to mentoring and team management.

Key Responsibilities

• Lead development of core platform components including frameworks, APIs, and backend services
• Design and build scalable RESTful APIs and microservices using Node.js (NestJS preferred)
• Take ownership of system design, architecture, and performance optimization
• Mentor junior developers and ensure adherence to coding standards and best practices
• Drive Agile development (JIRA-based) and ensure smooth sprint execution
• Collaborate with cross-functional teams (UI, DevOps, Product)
• Conduct code reviews and enforce efficient coding using DSA principles
• Manage version control and collaboration using Git/Bitbucket

Required Technical Skills

• Strong proficiency in JavaScript / TypeScript
• Hands-on experience in Node.js (NestJS preferred)
• Good understanding of Data Structures & Algorithms (DSA)
• Experience with SQL databases
• Strong knowledge of REST services and API development
• Experience with Git (version control)
• Understanding of backend architecture and scalable systems

Good to Have Skills

• Experience with Bitbucket
• Knowledge of AWS Cloud (EC2, S3, Load Balancer)
• Exposure to SAP UI5 or frontend frameworks
• Basic understanding of CI/CD pipelines and DevOps practices

Leadership & Behavioral Skills

• Experience in team handling / mentoring developers
• Strong knowledge of JIRA and Agile methodologies
• Excellent problem-solving and analytical thinking
• Strong communication and stakeholder management skills

Job Description

Job Purpose 

We work in the latest technology, and our foundations are data structures, algorithms, strong logical reasoning, and mathematics. We are looking for very strong engineers who love coding, optimizing, and making sure their code is the most efficient possible.

You will be involved with hardcore development. If you are an assembler of code or packages from different places to build something, you may not find our team to be the right fit.

You must be someone who can build anything from the ground up. Programming language should not be any barrier for you, as you should be able to pick up any programming language or underlying technology within a week.

Key Areas of Responsibility

Core development. Ready to participate in designing, brainstorming, and development process. You must give sleepless nights to meet deadlines whenever required.

Desired Candidate Profile

Essential Skills 

• Reliable, Accountable and Trustworthy
• Ability to understand software requirements based on a wireframe/program specification
• Familiarity with GoLang / PHP / Python / Java / C / C++ / Linux Shell and Scripting / HTML / CSS / JS / Node.js is a plus
• Effective communication skills to ensure smooth coordination of tasks with Team Leader
• Knowledge of MongoDB, MySQL, and PL/SQL is a plus
• Familiarity with ML, TensorFlow, and Keras is a plus
• Knowledge of web servers such as Apache, NGNIX, and the HTTP protocol is plus
• Knowledge of multi-process, threads, memory, and filesystem on Linux is desirable

Summary:

The Learner Company is an education start-up that designs personalized learning experiences by integrating them with the best of what technology offers. We are currently building an online learning engine to host adaptive online courses, simulations, and multiplayer games for institutional partners. We are now in the software development stage of the project.

We are looking for a full-stack developer to join our development team. The developer will be responsible for the overall development and implementation of front and back-end software applications. Their responsibilities will extend from designing system architecture to high-level programming, performance testing, and systems integration.

We are looking for an individual who is optimistic about technology and people, is open to and excited by new ideas, and considers themselves a life-long learner.

Responsibilities:

• Meeting with the software development team to define the scope and scale of software projects.
• Designing software system architecture.
• Completing data structures and design patterns.
• Designing and implementing scalable web services, applications, and APIs.
• Developing and maintaining internal software tools.
• Writing low-level and high-level code.
• Troubleshooting and bug fixing.
• Identifying bottlenecks and improving software efficiency.
• Collaborating with the design team on developing micro-services.
• Writing technical documents.

Required Competencies:

• Bachelor’s degree in computer engineering or computer science.
• Previous experience as a full stack engineer.
• Advanced knowledge of front-end languages including HTML5, CSS, TypeScript, JavaScript, C++, JQuery, React.js and Next.js.
• Knowledge of relational database systems and SQL.
• Familiarity with AWS architecture and working knowledge of services like S3, SES, EC2, RDS and more.
• Proficient in back-end languages including Java, Python, Rails, Ruby, .NET, and PHP.
• Advanced troubleshooting skills.
• Familiarity with MS Word, Excel, PowerPoint, Notion, Veed.io, Linear, Intercom, Plateau, and Miro.
• A strong belief that a team as a whole is greater than the sum of its parts.
• Excellent leadership, communication, and organization skills
  
  

Experience Needed: 2+ Years

Location: Bengaluru

• Meeting with the software development team to define the scope and scale of software projects.
• Designing software system architecture.
• Completing data structures and design patterns.
• Designing and implementing scalable web services, applications, and APIs.
• Developing and maintaining internal software tools.
• Writing low-level and high-level code.
• Troubleshooting and bug fixing.
• Identifying bottlenecks and improving software efficiency.
• Collaborating with the design team on developing micro-services.
• Writing technical documents.

Title : Java Fullstack Developer

Job Location: Hyderabad, Chennai, Vizag, Bangalore, Pune (100% Remote)

Responsibilities

• Strong hands-on experience with Java development.
• Designs, codes, tests, debug, and documents software, and enhance existing components to ensure that software meets business needs.
• Deploy and maintain Applications/Systems.
• Work with other software engineers for one or more Agile scrum teams assigned to work on the project.
• Contribute to the design and architecture to enable secure, scalable, and maintainable software and should be able to clearly articulate the implications of design/architectural decisions,
• issues and plans to technology leadership.
• Develop reusable patterns and encourage innovation that will enhance team velocity.
• Collaborate on the design with other team members and product owners, both inside and outside the scrum team.
• Estimate engineering work effort for engineering team and effectively identify and prioritize the high impact tasks.
• Conduct design and code reviews to ensure code developed meets coding best practices guidelines, unit testing, security, and scalability and maintainability guidelines.
• Drive a quality mindset within the team.

Skills & Qualifications Required:

• Bachelor's degree in computer science or information technology
• Minimum 4 Years of experience as Java Development
• Experience with Spring Boot
• Experience with Micro services
• Experience with Angular
• Experience with Rest API
• Must have the ability to learn the concepts of a Software Development Life Cycle.
• Understands the process of new application development and has the ability to apply these concepts with minimal mentoring and supervision.
• Must have the ability to learn to provide support & maintenance for simple to complex software applications.
• Communicates well with working teams. Motivated and willing to take initiative. Capable of working well in a team and collaborative environment.
• Adaptable to change.

BLAZE Madurai looking for JavaScript Frontend & Backend developer with hands-on web or mobile app development.

Skills required for JS Frontend developer:

• Must have strong experience in Angular JS , React JS ,Ember, etc.
• Cross-platform JS development experience with any of following tools is a plus (Ionic , Meteor.js , React Native, PhoneGap)
• Good understanding of the knowledge of advanced JavaScript like Objects/Closures/Async Events/etc is required
• Proficient understanding of code versioning tools, such as Git/ SVN.

Skills required for JS Backend developer:

• Must have strong experience in NodeJs or another Javascript server.
• Experience with a JS Backend framework is important ex: ExpressJS.
• Proficient understanding of code versioning tools, such as Git/ SVN.
• Experience in other backend programming PHP/Python/Ruby is an advantage.
• Good understanding of the knowledge of advanced JavaScript like Objects/Closures/Async Events/etc is require

The ideal candidate is a self-motivated, multi-tasker, and demonstrated team-player. You will be a lead developer responsible for the development and management of two of our customer facing websites. You should excel in working with scaling applications and frameworks.

The core skillset required is:

* Wordpress (inbuilt functions, theme and architecture level understanding)

* PHP

* MySQL

* HTML5 / CSS3

* Javascript (and related frameworks/libraries)

* Git

* RESTful APIs

Responsibilities

• Translating designs and functionality into code
• Maintaining dev and live versions of websites
• Writing clean, high-quality, high-performance, maintainable code
• Develop and support software including applications, database integration, interfaces, and new functionality enhancements
• Coordinate cross-functionally with external and internal teams
• Support test and deployment of new products and features
• Participate in code reviews

Qualifications

• Bachelor's degree in Computer Science (or related field)
• 2+ years of relevant work experience
• Expertise in Object Oriented Design, Database Design, and XML Schema
• Ability to multi-task, organize, and prioritize work

Mentorship and Support

* You will work directly with the Co-Founder of the business who will provide direct mentorship both around development as well as (if interested) help you cultivate business-side skills