Java Senior Full Stack Developer

Company: Billion-dollar US-based Retail

About the Role:

We are seeking a talented and experienced Fullstack Engineer with a strong focus on frontend development to join our dynamic team. You will work with modern web technologies to design and implement highly scalable and user-friendly interfaces for our global e-commerce platform. This is a hybrid role requiring 3 days a week from the office and 2 days remote.

Key Responsibilities:

Develop and maintain high-performance web applications with a primary focus on frontend features.

Collaborate with designers, backend engineers, and product managers to deliver seamless user experiences.

Write clean, maintainable, and scalable code using React.js, Vue.js, and other modern frameworks.

Integrate and optimize backend services using Node.js and PostgreSQL.

Participate in code reviews, mentoring sessions, and team discussions to uphold engineering excellence.

Stay up-to-date with emerging trends and technologies in fullstack and frontend development.

Required Skills and Experience:

8+ years of professional experience in software development, focusing on fullstack engineering.

Strong proficiency in React.js and/or Vue.js for frontend development.

Solid understanding of Node.js for backend services.

Experience with relational databases like PostgreSQL.

Proficiency in building responsive, cross-browser-compatible, and accessible user interfaces.

Familiarity with agile development methodologies and version control systems like Git.

Excellent problem-solving skills and the ability to work effectively in a team-oriented environment.

Preferred Qualifications:

Previous experience in the retail/ E-commerce / and finance domain a plus.

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

Full Stack Developer Internship – (Remote)

Pay: ₹20,000 - ₹30,000/month | Duration: 3 months

We’re building Pitchline - a voice based conversational sales AI agent, an ambitious AI-powered web app aimed at solving meaningful problems in the B2B space. It’s currently in MVP stage and has strong early demand. I’m looking for a hands-on an Full Stack Developer Intern who can work closely with me to bring this to life.

You’ll be one of the first people to touch the codebase — shaping the foundation and solving problems across AI integration, backend APIs, and a bit of frontend work.

What you'll be doing

• Build and maintain backend APIs (Python)
• Integrate AI models (OpenAI, LangChain, Pinecone/Weaviate etc.) for core workflows
• Design DB schemas and manage basic infra (Postgres)
• Support frontend development (basic UI integration in React or similar)
• Rapidly iterate on product ideas and ship working features
• Collaborate closely with me (Founder) to shape the MVP

What we're looking for

• Curiosity to learn new things. You don’t wait for someone to unblock you and take full ownership and get things done by yourself.
• Strong foundation in backend development
• Experience working with APIs, databases, and deploying backend services
• Curious about or experienced in AI/LLM tools like OpenAI APIs, LangChain, vector databases, etc.
• Comfortable working with version control and basic dev workflows
• Worked on real projects or shipped anything end-to-end (Even if it is a personal project)

Why join us?

You’ll be a core member of the team. What we’re building is one of a kind and being a part of the successful founding team will fast track your personal and professional growth.

You’ll work on a real product with potential, witnessing in real time the impact your hard work brings.

You’ll get ownership and be part of early decisions.

You'll learn how design, tech, and business come together in early-stage product building

Flexible working hours

Opportunity to convert to full-time upon successful conversion.

We’re a fast paced team, working hard to deploy the MVP as soon as possible. If you're excited about AI, startup building, and getting your hands dirty with real development then our company is a great place to grow.

Job Description:

The candidate should have an Engineering or BSc degree or/and relevant certifications from a reputable institute with 2-16 years of experience. He should be able to work independently and deliver results on schedule. He/She should have good team player skills to collaborate and lead, and share knowledge with others.

The candidate should be interested for a long term stable career to grow with our company and willing to work in 1 PM - 10 PM shift.

.          Should have delivered successful end-to-end development to deployment experience on Web applications and Api’sin last 3-6 years.

.           Must have good experience in Dot net core, MVC, C#, web api, Angular 2+ versions, HTML, CSS, OOPS.

• Experience in MySQL is a must and added advantage to have knowledge of NOSQL database.
• Extensive experience in writing rest full API
• Experience in using version controls such as GIT, Continuous Integration, Continuous Delivery
• Good to have experience in testing and debugging new programs using Firebug, Fiddler, Insomnia, and Postman Developer tools.
• Good in implementing the business rules in different layers like UI, services, and database.
• Should have 2-4 years’ experience in backend development
• Experience in service-based development using technologies such as Web API and RESTful services. 
• Proficient in S/W Development life cycle, Database Designing, and Database creation. 
• Proficient in writing clean, well-structured code with proper abstraction and reusability.

.         Ability to work to tight deadlines, manage priorities, and take responsibility for delivering to time and quality requirements.

.         Excellent Communication Skills

  Company Profile:

i2k2 Networks is a trusted name in the IT cloud hosting services industry. We help enterprises with cloud migration, cost optimization, support, and fully managed services which helps them to move faster and scale with lower IT costs. i2k2 Networks offers a complete range of cutting-edge solution that drives the Internet-powered business modules. We excel in:

  - Managed IT Services

  - Dedicated Web Servers Hosting

  - Cloud Solutions

  - Email Solutions

  - Enterprise Services

  - Round the clock Technical Support

i2k2 Networks Pvt Ltd.

We are looking for a Full Stack Engineer for a client of ours, that is headquartered in USA and is operating in the field of health tech space, offering an innovative solution for dominate health issues. The company is well funded and backed by investors like Sequoia Capital.

They are looking for people who are interested to join their company and help them make an impact on their product development and growth.

In this role you will be part of the Product Engineering Team, and will be responsible for working with cross functional teams.

Experience Required

5+ years experience, having worked on both frontend and backend development - hands on development experience from front end, middle tier and back end.

3+ years of experience building Restful web service using node.js

3+ years of experience for writing batch/cron jobs using Python and shell scripting

3+ years of experience in web application development using javascript and ReactJs

Have understanding of javascript, Typescript, HTML, CSS, JSON, Rest based applications

Experience in database techs - mongodb, mysql, redis, elastic search

Experience of building applications deployed on the cloud using AWS, Docker and kubernetes

Good to have : - understanding of code versioning tools like Git

Experience or understanding of JS based build tools like Grunt, Gulp, Bower, Webpack and NPM

Good communication, willingness to work in a diverse team, and a fast paced environment would be a requirement to be successful in this role.

Education Experience

Degree in Computer science would be preferred / equivalent professional experience in product companies.

Stipend: INR. 5,000 to INR. 15,000 per month + Performance Bonus + Goodies for Elites

We are looking for skilled Full Stack Developer interns who can oversee the complete software development road cycle at Spacenos and work on building amazing products.

• Experience with JavaScript and ReactJs framework.
• Experience with NodeJs, Firebase and Firestore Functions.
• Candidates should have the ability to pick up new technologies quickly
• Knowledge of code versioning tools (such as Git, Mercurial, or SVN)

1. Creating and converting high-fidelity designs into code.
2. Assist with creating cross-platform UI Web components
3. Build responsive applications using front-end frameworks
4. Create Backend services for the UI and test with edge cases.

5. Test components using new technologies

Spacenos is the fastest-growing start-up which is innovating in the finance, edtech and marketing domain since 2015 and won multiple awards and recognitions from more than 40+ MNCs and Fortune 500 companies. Our Clients are based out of the U.S.A and Australia. We are funded & Supported by Government of Karnataka, Angel Investors and International Grants.

1. Apply for your CV and past work to be reviewed.
2. Receive a telephonic interview or assessment upon filling the final step form.
3. Receive offer letter if selected.

Apply soon, the earliest applicant would be preferred over the late applicants.

You will:

• Write excellent production code and tests and help others improve in code-reviews
• Analyze high-level requirements to design, document, estimate, and build systems
• Coordinate across teams to identify, resolve, mitigate and prevent technical issues
• Coach and mentor engineers within the team to develop their skills and abilities
• Continuously improve the team's practices in code-quality, reliability, performance, testing, automation, logging, monitoring, alerting, and build processes

You have:

For (Fullstack):

• 2 - 10 Years of experience
• Strong with DS & Algorithms
• Hands on Experience in the Programming languages: JavaScript (React or Angular), Python, SQL.
• Experience with AWS.

For (Geo Team):

• 4 - 10 years of experience
• Experience with Big Data technologies like Hadoop, Spark, Map Reduce, Kafka, etc
• Experience using object-oriented languages (Java, Python)
• Experience in working with different AWS technologies.
• Experience in software design, architecture and development.
• Excellent competencies in data structures & algorithms.

For (Backend):

• 2 - 10 years of experience
• Hands on product development experience using Java/ C++/Python
• Experience with AWS,SQL,GIT
• Strong with Data structures and Algorithms

Additional nice to have skills/certifications:

For Java skill set:

Mockito, Grizzly, Netty, VertX, Jersey / JAX-RS, Swagger / Open API, Nginx, Protocol Buffers, Thrift, Aerospike, Redis, Kinesis, Sed, Awk, Perl

For Python skill set: Data Engineering experience, Athena, Lambda, EMR, Spark, Glue, Step Functions, Hadoop, Kinesis, Orc, Parquet, Perl, Awk, Redshift

For (Data Engineering):

• 2 - 10 years of experience
• Experience with object-oriented/object function scripting languages: Python.
• Experience with AWS cloud services: EC2, RDS, Redshift,S3,Athena, Glue
• Must be proficient in GIT, Jenkins, CICD (Continuous Integration Continuous Deployment)
• Experience in big data technologies like Hadoop, Map Reduce, Spark, etc
• Experience with Amazon Web Services and Dockers

Essential Job Functions:

1. Implement application components and systems according to department standards and guidelines.
2. Work with product and designers to translate requirements into accurate representations for the web.
3. Analyze, design, code, debug, and test business applications.
4. Code reviews in accordance with team processes/standards.
5. Understand and work with data in varying degrees of complexity and scale.
6. Responsible for planning, processing and performing all jobs in an efficient manner.
7. Provide assistance to testers and support personnel as needed to determine system problems.
8. Resolve problems involved with integrating new technologies with systems.

* Essential functions are the basic job duties that an employee must be able to perform, with or without reasonable accommodation.  The function is considered essential if the reason the position exists is to perform that function.

Supportive Job Functions:

1. Remain knowledgeable of new emerging technologies and their impact on internal systems.
2. Available to work on call when needed.
3. Perform other miscellaneous duties as assigned by management.

*These tasks do not meet the Americans with Disabilities Act definition of essential job functions and usually equal 5% or less of time spent.  However, these tasks still constitute important performance aspects of the job.

Knowledge, Skill, and Abilities:

1. Experience using Python, JavaScript, and React.
2. Experience with web services and RESTful APIs.
3. Experience in cloud infrastructure
4. Experience with Sql and NoSql databases
5. Familiarity with modern CI/CD methods
6. Ability to organize, prioritize, and handle multiple assignments on a daily basis.
7. Strong and effective inter-personal and communication skills
8. Ability to interact professionally with a diverse group of clients and staff.
9. Must be able to work flexible hours on-site and remote.
10. Must be able to coordinate with other staff and provide technological leadership.
11. Ability to work in a complex, dynamic team environment with minimal supervision.
12. Must possess good organizational skills.

Education, Experience, and Certification:

1. Associate’s or bachelor’s degree preferred (Computer Science, Engineer, etc.), but equivalent work experience in a technology related area may substitute.
2. 5+ years relevant experience, required. *
3. Experience using version control daily in a developer environment.
4. Experience with Python, JavaScript, and React is required.
5. Experience using rapid development frameworks like Django or Flask.
6. Experience using front end build tools.