Team 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 Title: Mid-Level .NET Developer (Agile/SCRUM)

Location: Mohali, Bangalore, Pune, Navi Mumbai, Chennai, Hyderabad, Panchkula, Gurugram (Delhi NCR), Dehradun

Night Shift from 6:30 pm to 3:30 am IST

Experience: 5+ Years

Job Summary:

We are seeking a proactive and detail-oriented Mid-Level .NET Developer to join our dynamic team. The ideal candidate will be responsible for designing, developing, and maintaining high-quality applications using Microsoft technologies with a strong emphasis on .NET Core, C#, Web API, and modern front-end frameworks. You will collaborate with cross-functional teams in an Agile/SCRUM environment and participate in the full software development lifecycle—from requirements gathering to deployment—while ensuring adherence to best coding and delivery practices.

Key Responsibilities:

• Design, develop, and maintain applications using C#, .NET, .NET Core, MVC, and databases such as SQL Server, PostgreSQL, and MongoDB.
• Create responsive and interactive user interfaces using JavaScript, TypeScript, Angular, HTML, and CSS.
• Develop and integrate RESTful APIs for multi-tier, distributed systems.
• Participate actively in Agile/SCRUM ceremonies, including sprint planning, daily stand-ups, and retrospectives.
• Write clean, efficient, and maintainable code following industry best practices.
• Conduct code reviews to ensure high-quality and consistent deliverables.
• Assist in configuring and maintaining CI/CD pipelines (Jenkins or similar tools).
• Troubleshoot, debug, and resolve application issues effectively.
• Collaborate with QA and product teams to validate requirements and ensure smooth delivery.
• Support release planning and deployment activities.

Required Skills & Qualifications:

• 4–6 years of professional experience in .NET development.
• Strong proficiency in C#, .NET Core, MVC, and relational databases such as SQL Server.
• Working knowledge of NoSQL databases like MongoDB.
• Solid understanding of JavaScript/TypeScript and the Angular framework.
• Experience in developing and integrating RESTful APIs.
• Familiarity with Agile/SCRUM methodologies.
• Basic knowledge of CI/CD pipelines and Git version control.
• Hands-on experience with AWS cloud services.
• Strong analytical, problem-solving, and debugging skills.
• Excellent communication and collaboration skills.

Preferred / Nice-to-Have Skills:

• Advanced experience with AWS services.
• Knowledge of Kubernetes or other container orchestration platforms.
• Familiarity with IIS web server configuration and management.
• Experience in the healthcare domain.
• Exposure to AI-assisted code development tools (e.g., GitHub Copilot, ChatGPT).
• Experience with application security and code quality tools such as Snyk or SonarQube.
• Strong understanding of SOLID principles and clean architecture patterns.

Technical Proficiencies:

• ASP.NET Core, ASP.NET MVC
• C#, Entity Framework, Razor Pages
• SQL Server, MongoDB
• REST API, jQuery, AJAX
• HTML, CSS, JavaScript, TypeScript, Angular
• Azure Services, Azure Functions, AWS
• Visual Studio
• CI/CD, Git

About POSHN

POSHN is a dynamic India-based ag-fintech venture founded in 2020 and supported by leading marquee financial institutions. We are on a mission to organize and digitally transform the global agri-supply chain market. By applying first principles thinking, we are re-imagining solutions with a tech-product-first mindset. The agri-supply chain space is gigantic, complex, and has been largely unorganized. At POSHN, we are taking the hassle out of it by creating a platform that empowers our products and facilitates a better, efficient, and seamless experience between stakeholders.

About the Team

Our core team consists of alumni from BITS Pilani, IIM, and XLRI, each with a decade-long experience in supply chain, technology, and product development. Previously, we have built several highly impactful tech-product startups from the ground up.

About the Role: Full Stack Engineer

We are looking for a talented and motivated Full Stack Developer with 2-4 years of experience to join our team. In this role, you will work closely with our team to define the product roadmap and take ownership of the web development stack. You will have the flexibility to innovate and implement new solutions that enhance our platform, working alongside UX, data engineering, and other key stakeholders.

Key Responsibilities

• Full Stack Development: Design, build, and configure applications to meet business processes and application requirements. You will work across the frontend and backend, ensuring seamless integration and functionality.

• Frontend Engineering: Convert designs into smooth, user-friendly interfaces. Analyze UI/UX designs and suggest the best approaches for implementation.

• Backend Engineering: Build scalable backend systems using microservices architecture. Optimize database models, queries, and ensure high availability and performance.

• Requirements Gathering: Capture and clearly articulate technical requirements by working closely with stakeholders and end customers. Prioritize tasks to meet business objectives.

• Code Quality: Write testable, scalable, and efficient code. Lead code reviews and ensure that software quality standards are met.

• Solution Implementation: Take ownership of assigned products, ensuring timely and efficient delivery. Carry out solution testing, including root-cause analysis, and suggest logical alternatives when needed.

Career Experience

• Experience: 2-4 years of experience in full stack development, including significant contributions to at least three web development projects.

• Technical Expertise: Proficient in frontend frameworks (VueJS, ReactJS, or AngularJS) and backend technologies (NodeJS, Go, or Python).

• Microservices Architecture: Experience building scalable backend microservices architecture.

• Database Management: Expertise in SQL, NoSQL, and database optimization.

• Agile Methodologies: Familiar with agile development practices, including coding standards, documentation, unit testing, and version control using Git.

Bonus Points/Nice to Have

• E-commerce/Supply Chain Experience: Any experience or knowledge in the e-commerce or supply chain industry.

About You

• Creative and Innovative: You enjoy designing and building complex software systems and are not afraid to experiment and try new approaches.

• Ownership: You take responsibility for your work and are committed to delivering high-quality solutions.

• Continuous Learner: You are curious and eager to stay updated with the latest technologies and industry trends.

• Analytical Mind: You have a keen eye for detail and are capable of turning ideas into working applications that deliver real value to customers.

Benefits

• Competitive Salary and ESOPs: Rewarding you for your best work.

• Generous Leave: We believe in work-life balance.

• Exciting Startup Environment: Be a key member of a startup transforming the agri-supply chain industry.

• Collaborative Culture: Work in an open, fun, and supportive environment.

• Training & Development: Grow in the areas that interest you most.

How to Apply

If you are interested for this role, kindly apply on the same. This JD merges the best elements from both descriptions, tailored for a Full Stack Developer role with 2-4 years of experience. Let me know if you need any further adjustments!

Responsibilities

• Strong knowledge of MERN stack (MongoDB, Express JS, React JS, Node JS, HTML5, CSS3, jQuery, Bootstrap, SASS)
• Develop user interfaces for modern rich internet applications with the latest front-end technologies
• Developing features to enhance the user experience.
• Should have excellent in-depth knowledge on Nodejs and MongoDB
• Hands-on experience working with Object-Oriented JavaScript (OOJS), JavaScript libraries and their practical uses in building complex interactive experiences
• Building reusable code for future use
• Writing tested code and its documention

• 1+ years of experience in front end development and backend development is must
• Thorough knowledge of HTML5, CSS3 (LESS/SASS),React, Nodejs and Mongodb
• Solid understanding of JavaScript and the ability to pick up any framework quickly
• Strong Experience in back-end frameworks used to develop dynamic web pages (REST, GraphQL, WebSocket/socket.io)
• Expertise in developing and testing across multiple browsers, platforms, DOM implementations, etc.
• Strong experience in React, React Hooks, Redux, Thunk | Saga, ES6, Typescript, ESLint, Nodejs, GraphQL, Redis, AWS, Git, Github, Docker

Bonus but not mandatory

• UI/UX designs
• AWS
• Git
• CI/CD

We are looking to hire a Full-stack web developer who will be responsible for the creation and enhancement of web applications according to the company's specifications. As the role takes into consideration user experience and function, a certain level of both functional domain experience and computer programming is necessary.

To be successful in this position, you will be required to demonstrate a detailed knowledge of the industry's best practices in software development, development expertise in back-end technologies, and must have a professional track record of effective technical management, information analysis, and experience in latest web technologies.

You should have in-depth knowledge of object-oriented PHP programming, an understanding of MVC designs, and working knowledge of front-end technologies including HTML 5, JavaScript, and CSS3.

Responsibilities

13.Guide team members for design and implementation of tasks
14. Coordinate end-to-end implementation.

Requirements-

• 1 to 3 years of professional experience working with PHP, web frameworks including Laravel, CodeIgniter- Preferred.
• 1 to 3 years of professional software development experience-Preferred
• Meaningful experience working on large, complex system integrations
• Knowledge of front-end technologies including CSS3, JavaScript, and HTML5.
• Previous experience creating scalable applications.
• Proficient with code versioning tools including Git, Mercurial, CVS, and SVN.
• Familiarity with SQL/NoSQL databases.
• Ability to manage projects.
• Good problem-solving skills
• Ability to take extreme ownership over your and teams work

We are looking for a driven, talented full-stack developer, obsessed with coding to join our development team. We have been called the hottest SaaS startup in the interior design space many times, so if you join us, you’ll have the rare opportunity to build a product like Canva from scratch! Not just that, you’ll get to learn various exciting technologies that power products like Figma. 

So if you’re smart, curious about new digital technologies, and moonstruck about the quality of your code: You have a love-hate relationship with code bugs – you hate to see them, but if they do pop up once in a while, you are amazingly efficient at throwing them out of your code, with love. - this job is yours!

Requirements:

• 3 years experience on MongoDB, Express, VueJs/ react.js and NodeJs(MEVN stack)
• Hands-on with JavaScript with detailed knowledge of browser peculiarities
• working experience on Node.js/Python/Java, on the server; Express JS; MongoDB and VueJs/react.js/NuxtJs on client side.

Oh and just like everyone else, we love bonuses too. Any work experience in the below would be a sweet add on:

• Experience with cloud technologies such as AWS

• Creating robust and secure RESTful web services in XML and JSON, JavaScript, jQuery

We are looking for a Full Stack Developer to produce scalable software solutions. You will be part of a cross-functional team that is responsible for the full software development life cycle, from conception to deployment.

As a Full Stack Developer, you should be comfortable around both front-end and back-end coding languages, development frameworks, and third-party libraries. You should also be a team player with a knack for visual design and utility.

If you have enough confidence and ready to adopt new technologies, you might be a great fit for the requirement.

Responsibilities

• Work with development teams and higher management to ideate software solutions as per requirement

• Design client-side and server-side architecture

• Build the front-end of applications through appealing visual design

• Develop and manage well-functioning databases and applications

• Write effective APIs

• Test software to ensure responsiveness and efficiency

• Troubleshoot, debug and upgrade software

• Create security and data protection settings

• Build features and applications with a mobile/tab responsive design

• Write technical documentation

• Work with data scientists and analysts to improve software

Required Skills

• Proven experience as a Full Stack Developer or similar role

• Experience developing desktop and web applications

• Familiarity with common stacks

• Knowledge of multiple opensource front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery)

• Knowledge of multiple opensource back-end languages (e.g. Python) and JavaScript frameworks (e.g. React, Node.js)

• Familiarity with databases (e.g. PostgreSQL, MongoDB), web servers, and UI/UX design

• Well knowledge about Docker and other DevOps technologies

• Ready to adopt new technologies as per requirements.

• Great attention to detail * Organizational skills

• An analytical mind