Senior 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

• C#, .NET, ASP.NET, Web API, MVC, Entity Framework
• JavaScript, Angular (React, Vue.js, Knockout.js also considered)
• SQL Server, relational databases (NoSQL is a plus)
• Microsoft Azure, AWS
• Docker, CI/CD pipelines
• SaaS and cloud-native architecture

Responsibilities

• Design and develop full stack web applications using .NET and Angular
• Build scalable APIs and backend services with C# and ASP.NET
• Develop responsive front-end components using JavaScript frameworks
• Optimise application performance, scalability, and security
• Work with SQL Server and data access layers
• Collaborate with product managers, designers, and engineers in an Agile environment
• Participate in code reviews and follow engineering best practices

Senior / Project Lead Responsibilities (If Applicable)

• Technical ownership across the software development lifecycle
• Architecture and technical design decisions
• Mentoring junior engineers
• Estimation, planning, and technical problem-solving

Requirements

• 3–5+ years of experience as a Software Engineer / Full Stack Developer
• Strong commercial experience with C#, .NET, and JavaScript
• Experience with Angular or similar front-end frameworks
• Cloud experience with Azure and/or AWS
• Knowledge of Docker, CI/CD, and DevOps practices
• Experience building scalable, production-grade web applications
• SaaS experience is highly desirable

Nice to Have (Boosts Search Reach)

• Node.js
• Microservices architecture
• NoSQL databases
• Automated testing frameworks (Jest, Mocha)

About the company:

Our Client is a food platform based in India that focuses on bringing together digital-first brands, experiences, and retail destinations to cater to discerning consumers. Led by industry stalwarts, who previously operated Foodhall, a leading gourmet food retail chain in India, and former Managing Director of Future Consumer Limited, the company aims to shape the narrative around food in the country.

To further enhance its presence, the company is opening a chain of retail stores targeting young gourmet food lovers in Delhi NCR, Mumbai, and Bangalore. These interactive spaces will offer epicurean treats for cooking, eating, and entertaining, and will feature better-made, new-to-market products and new-age brands. Orders placed on digital platforms will be fulfilled through a same-day home delivery network, and the stores will be supported by state-of-the-art commissaries in the three cities.

Our client is backed by a venture-backed, digital-first brand development platform. They partner with passionate entrepreneurs to build authentic, profitable, and experience-led brands that cater to the new generation of Indian consumers. Their team combines their collective learning and experience with data science, digital ethnography, and technology platforms to create brands that connect with consumers.

What you’ll be doing?

• Fluent in Backend web application development (Node.JS, PHP with good knowledge of Magento).
• Fluent in Database (MySQL, NoSQL, MongoDB) design and management.
• Substantial experience with high throughput web services.
• Experience in using cloud platforms like Amazon.
• Knowledge of Frameworks like Express, Koa, Zend, etc.
• Basic Understanding of Front End development (JavaScript, CSS, Ajax, React.JS, Boot Strap, HTML 5)
• Fluent in various automation testing, performance testing, and deployment tools.
• Decent Understanding of Working on Agile Software Development Methodology.

What you’ll bring?

• We are looking for an experienced Back End developer to be part of a diverse, fast pace and energetic team.
• The candidate will be expected to design a scalable client-server framework, build database-intensive reporting modules, scalability and reliability of existing applications and services, and provide troubleshooting and 2nd-tier support for existing applications.
• The candidate should be a self-starter, who is proactive, positive, flexible, and a good team player.
• Minimum qualifications: B.Tech./B.E. in CS, IT, or ECE from a reputed college. 1-3 years of experience in Backend software development

Why work with us?

• You will be part of our founding team and get your hands dirty in the 0-1 stage of building a D2C brand.
• You will work with a solid set of people from diverse backgrounds.
• You will independently lead projects and have ownership of your deliverables.
• You will be pushed out of your comfort zone and watch your learning curve spike

This is an excellent opportunity to lead the award winning payment solution team.

Finzly is looking for a Java Lead with 10+ years of experience. The role will be part of a team of offshore engineers to create innovative solutions for our banking customers. This is a leading and hand on software engineering role for those who enjoy working on latest technologies, and are always eager to learn and innovate. A great opportunity to be a part of a growing Fin-tech Product based company and to build up a career in the core banking/payments domain

Skills: Java*.*, Angular, Spring Boot, Spring Batch 

Job Location:Pune/Chennai

*Immediate joiners preferred

What Finzly offers?

• An exciting opportunity to be a part of a growing Fin-tech Product based company.
• An opportunity to learn , be a part of a vibrant team and build up a career in the core banking/payments domain.
• Competitive compensation.
• A result oriented and agile company culture, with a flat hierarchy and zero politics.

What you'll do?

• Responsible for the design and implementation of features for new products and enhancements to existing products.
• Understand, apply and create high-level architectural design and patterns
• Actively guide and challenge intermediate and junior developers
• Writing high quality robust code to meet the desired specification.
• Work seamlessly with the local development and QA team and with other members of our global team.
• Ability to work in a fast-paced Agile environment delivering great quality product..
• 100% Remote working during COVID Pandemic.

What you have to bring ?

• A Bachelors or Masters degree in subjects such as computer science or an equivalent qualification
• Experience in building microservice based applications
• A “can do” attitude with zeal to deliver the best quality product.
• Take ownership and shape the future of our product with your ideas.
• Extensive hands on experience in Core Java, J2EE, Multi-threading, Web Applications.
• Extensive knowledge of Spring Boot and Spring Framework.
• Experience with Messaging Middleware like Kafka, RabbitMQ, IBM MQ
• Experience with Angular and building responsive web applications is a plus.
• Excellent verbal and written communication skills.
• Ability to work in an international multi-site environment in conjunction with remote teams.

About the team:

At Finzly you'll have the opportunity to work on some of the most challenging and relevant issues in financial services and technology. Our talented people empower us, and we believe in being part of a team that is open, collaborative, entrepreneurial, and passionate and above all fun. We require skill in developing modern micro service web applications and restful APIs on Amazon's AWS cloud platform. The role will be part of a team of offshore engineers to create innovative solutions for our banking customers. This is a hand on software engineering role for those who enjoy working on latest technologies, and are always eager to learn and innovate.

Finzly is on a mission to free banks from their core and core-vendor limitations by creating an App store ecosystem which empowers banks to instantly and easily try new products and services. Therefore, enabling them to make smarter technology decisions while going-to-market at fin-tech speed.

Finzly recently won an award “Best enterprise payment solution”

The ideal candidate will be responsible for developing high-quality applications. They will also be responsible for designing and implementing testable and scalable code.

Responsibilities

• Develop quality software and web applications
• Analyze and maintain existing software applications
• Design highly scalable, testable code
• Discover and fix programming bugs

Qualifications

• Bachelor's degree or equivalent experience in Computer Science or related field
• Development experience with programming languages Python, Javascript, NodeJS
• At least 2-3 years of experience in Python and React
• SQL database or relational database skills
• Strong understanding of the software development cycle
• Self-motivation and the ability to work under minimal supervision are a must
• Excellent oral and written communication skills to interact with all levels in the organization

Responsibilities:

• Candidate will be responsible to work on CMS like WordPress, Woocommerce
• Candidate have to provide estimation for the provided tasks, create necessary technical documents required
• Candidate have to do communication with the client for any kind of project related discussion
• Candidate will report directly to the technical head

Requirements:

• Should have strong skills with PHP-MySQL
• Must have the 2+ years of experience working in WordPress
• Should able to create custom themes in WordPress
• Should be able to create custom plugins in WordPress
• Should have created few sites in WordPress only
• Strong knowledge on Database
• Experience working on AJAX & jQuery
• Experience in customizing the plugins
• Good Communication Skills

Benefits Providing By Coreway Solution:

• Paid Leaves
• Flexibility in working hours
• Yearly Tour
• Performance Bonus
• Learning & Growth Platform
• Weekly & Monthly Celebrations
• Friendly Work Culture
• Alternate Saturday Off

Job Responsibilities

• Manage a team of talented engineers and oversee daily execution
• Work with product managers in planning sprints and task estimation
• Remove roadblocks for teams and increase delivery velocity
• Provide technical leadership to the team
• Be Technical SME in client meetings
• Be a stickler for code quality, test coverage
• Coach and grow engineering team

To be successful in this role, you need to have/be:

• Proven track record in managing engineering teams and delivering quality products.
• Experience in Ruby on Rails, React JS tech stacks
• Experience in building high performance web applications/APIs
• Top notch analytical/problem solving/debugging skills
• Should have proven ability to build, lead and develop a team
• Strong communication skills with the ability to clearly articulate needs as well as provide the team with a clear overview of the priorities
• Excellent verbal, analytical, organizational, and written skills