Software Development Engineer II

Role : Java Developer (2-7 years)

Location : Bangalore

Key responsibilities

• Develop and maintain high-quality, efficient, and scalable backend applications. 
• Participate in all phases of the software development lifecycle (SDLC) 
• Write clean, well-documented, and testable code adhering to best practices. 
• Collaborate with team members to ensure the successful delivery of projects. 
• Debug and troubleshoot complex technical problems. 
• Identify and implement performance optimizations. 
• Participate in code reviews 
• Hands-on experience with Spring boot, Java 8 and above. 
• 2-7 years of experience developing Java applications. 
• Knowledge about at least one messaging system like Kafka, RabbitMQ etc. 
• Required React developer requirements, qualifications & skills: 
• Proficiency in React.js and its core principles 
• Strong JavaScript, HTML5, and CSS3 skills 
• Experience with popular React.js workflows (such as Redux) 
• Strong understanding of object-oriented programming (OOP) principles. 
• Experience with design patterns and best practices for Java development. 
• Proficient in unit testing frameworks (e.g., JUnit). 
• Experience with build automation tools (e.g., Maven, Gradle). 
• Experience with version control systems (e.g., Git). 
• Experience with one of these databases – Postgres, MongoDb, Cassandra 
• Knowledge on Retail or OMS is a plus. 
• Experienced in containerized deployments using Docker, Kubernetes and DevOps mindset 
• Ability to reverse engineer existing/legacy and document findings on confluence. 
• Create automated tests for unit, integration, regression, performance, and functional testing, to meet established expectations and acceptance criteria.

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

Develop, record and maintain cutting edge web-based J2EE, JAVA applications.

Experience on Java Spring Framework is required.

Experience on Hibernate is required.

Experience on REST Services is required.

Object-oriented programming, design, and patterns.

Strong proficiency with:Relational database concepts and data modeling.

Good communication skills to interact with customer, understand their requirement, effectively record the requirement and implement the same. 

Clearly understand the requirement, handle a team of developers.

Design and enhance application architecture.

Roles & Responsibilities

• You will be a key member in building modern web application platforms.
• Building user interfaces for management products
• Creating wireframes, prototypes based on the requirements.
• Building api for UI backend.
• Provide assistance in the up-gradation and maintenance of web applications.

Job Requirements

• 3 to 5 years of web development experience is required.
• Hands-on experience with api and microservice development.
• Proficiency with fundamental front-end languages such as JavaScript, HTML, CSS.
• Proficiency with JavaScript frameworks such as ReactJs.
• Proficiency with server-side languages such as NodeJs, Java, GoLang, etc.
• Exposure to wireframing and prototyping.
• Familiarity with database technology such as MongoDB.
• Good to have:
  1. Experience in UX design.
  2. Working experience on Linux environments.
  3. Working experience on Docker and Kubernetes.
  4. Working experience in microservices.
  5. Knowledge of the networking domain.

Full-stack Developer

CAST is the market leader in Software Intelligence. Its unique technology thoroughly examines the structure of complex software systems, with MRI-like precision. It delivers accurate, actionable, and automated views of software architecture, critical flaws, quality grades, sizing metrics, open source usage, and cloud readiness levels. Hundreds of companies rely on CAST for greater objectivity in crucial business decisions, faster application modernization for Cloud, raising the quality and security of their custom software. CAST operates globally with offices in North America, Europe, India, China.

Title: Software Developer

Location: Bangalore

Job definition

Working at CAST R&D means being an important part of a highly-talented, fast-paced, multicultural and Agile team based in Paris (France) and Bangalore (India). The team builds sophisticated source code analysis platform leveraging parsing, control flow, data flow and others mechanisms to fully understand the inner structure of the complex IT Systems developed and used by the Fortune 500 companies.

You, working as individual contributor, will be integrated in Dashboard Teams working on web portals of CAST AIP. Your teammates will be located in India and in France and you will have the opportunity to travel to France every year.
You will collaborate to writing and designing new features and improve existing ones. You will write unit tests and drive code reviews. You will participate into best practices definition and technology watch. Depending on will, skills and experience, you will have the opportunity to take technical lead on topics or projects.

While the domain of CAST is a niche, the position will propose you to work on software that dedicate to company Dashboards and control software, focusing on technical and creative skills.

Profile

• Experience : 3-6 years
• Experience in developing front-end/full stack applications at scale

• Should have experience in any of the front-end framework like React, Angular, BackboneJS, Ext etc and HTML/CSS/Bootstrap .
• Experience in backend technologies like GOLANG, NodeJS, Python, REST web services and Java(OOPS, Collections, DB Access) or any other technology.

• Hands on experience in JavaScript Concepts (OO-JS, Closures, Unit Testing, Module Patterns etc)

• Good to have skills like REST, Bootstrap, UI Components, CI/CD, NoSQL based DB is added advantage.

• Experience with advanced CSS programming using LESS or SASS is a plus.
• Expertise in of server side technologies and SQL/NoSQL is a plus.
• Experience of JavaScript testing frameworks like Karma, Mocha, Jest etc.

• It involves design the software system, Select algorithms, theories or technologies that will be used for BUSINESS Applications
• Contribute to software development design discussions for new features and new product development
• Strong Problem solving skills and ability to troubleshoot applications & environment issues.
• Adaptability, ability to learn faster, Independent, responsible and diligent.
• Good team spirit and interpersonal skills, Excellent Written, Verbal, communication skills, Analytical skills & Business Thinking.

The candidate should have a passion for technology and a flexible, creative approach to problem solving. You are autonomous and take responsibility for your work.

Ideally, you know how to write unit tests and maybe even better write them in TDD. You have knowledge in agile methodologies such as Scrum. You know about GIT and the use of continuous integration tools. You have developed single page JS applications end to end.

Candidate should have a bachelor or Master technical degree or equivalent experience. Strong knowledge in software engineering. Proactive Self Starter, creative thinker in designing, developing and supporting applications. Work as part of cross functional, passionate agile project teams to ensure quality is driven into the heart of the development process.

[Developers with strong React JS knowledge and open to learning the Vue JS framework also can apply]

We are looking for a SDE—Full stack  Web Developers with 2+ years of hands on experience along with Strong Frontend knowledge  Vue, React , Nuxt JS, using Bootstrap ability adopt all-new Vue complete state management modern stacks and it’s SEO configuration and develops an abundance of ideas for building efficient UI components, UI strategies, also worked on Backend JS Frameworks latest Node js Express JS, REST API Design, serverless concept  (npm, Express Js).

 Required skills

• Ability to translate designs from product teams into working product features.
• Design and build software for mobile, front-end clients and back-end systems.
• Strong understanding and fundamentals of HTML/CSS/JS 
• Vue Js, Nuxt JS, using Bootstrap (Vue CLI, Vue Router, Vuex, Composition API, Vite/Webpack configurations, hooks) and ability to adopt all-new Vue complete state management modern stacks.
• Ability to Migrate to the latest version of the respective Web UI framework and its SEO configuration and develop an abundance of ideas for building efficient UI components, UI strategies.
• Worked on Latest Node js, REST API Design, serverless concept  (npm, Express Js)
• Experience in NoSQL DB Collection documents data modeling and design for that large scale projects  (Firestore or MongoDB )

Optional Skills

• Knowledge of Advanced GCP fundamentals like Google Load balancer, Google cloud CDN.
• Have explored new backends stacks like GraphQL Hasura Cloud.
• Experience in REST API caching and CDN configurations.
• Worked on Instant pages load with more Google Lighthouse score and worked on resolving JS error reports. 
• Optional: Knowledge on Google Serverless Technologies like Google Firebase Platform (Firebase Auth, Cloud Function, Cloud Run, Google Firestore, Firebase Web SDK ) Fundamental knowledge of Docker, GCP, and the modern Serverless concept, worked on Docker (Devops Fundamental knowledge on Docker, Deployment, CD/CI) will be good.

• 2+ years of experience participating in the delivery of technology services.
• A proven ability to learn new applications & innovate in technology
• Strong Experience in technologies like Node, Webservices and Microservices
• Experience with cloud components and services and containerization technologies is desirable
• Exposure to ReactJS mandatory
• Experience working with multiple types of datastores: Mongo DB, SQL
• Experience in integrating, designing and developing solutions is desirable
• Experience with CI/CD and TDD is desirable
• Frameworks - Express , Hapi , feathers
• Strong knowledge in Javascript