java fullstack developer

We're looking for an experienced Full-Stack Engineer who can architect and build AI-powered agent systems from the ground up. You'll work across the entire stack—from designing scalable backend services and LLM orchestration pipelines to creating frontend interfaces for agent interactions through widgets, bots, plugins, and browser extensions.

You should be fluent in modern backend technologies, AI/LLM integration patterns, and frontend development, with strong systems design thinking and the ability to navigate the complexities of building reliable AI applications.

Note: This is an on-site, 6-day-a-week role. We are in a critical product development phase where sthe peed of iteration directly determines market success. At this early stage, speed of execution and clarity of thought are our strongest moats, and we are doubling down on both as we build through our 0→1 journey.

WHAT YOU BRING:

You take ownership of complex technical challenges end to end, from system architecture to deployment, and thrive in a lean team where every person is a builder. You maintain a strong bias for action, moving quickly to prototype and validate AI agent capabilities while building production-grade systems. You consistently deliver reliable, scalable solutions that leverage AI effectively — whether it's designing robust prompt chains, implementing RAG systems, building conversational interfaces, or creating seamless browser extensions.

You earn trust through technical depth, reliable execution, and the ability to bridge AI capabilities with practical business needs. Above all, you are obsessed with building intelligent systems that actually work. You think deeply about system reliability, performance, cost optimization, and you're motivated by creating AI experiences that deliver real value to our enterprise customers.

WHAT YOU WILL DO:

Your primary responsibility (95% of your time) will be designing and building AI agent systems across the full stack. Specifically, you will:

• Architect and implement scalable backend services for AI agent orchestration, including LLM integration, prompt management, context handling, and conversation state management.
• Design and build robust AI pipelines — implementing RAG systems, agent workflows, tool calling, and chain-of-thought reasoning patterns.
• Develop frontend interfaces for AI interactions including embeddable widgets, Chrome extensions, chat interfaces, and integration plugins for third-party platforms.
• Optimize LLM operations — managing token usage, implementing caching strategies, handling rate limits, and building evaluation frameworks for agent performance.
• Build observability and monitoring systems for AI agents, including prompt versioning, conversation analytics, and quality assurance pipelines.
• Collaborate on system design decisions around AI infrastructure, model selection, vector databases, and real-time agent capabilities.
• Stay current with AI/LLM developments and pragmatically adopt new techniques (function calling, multi-agent systems, advanced prompting strategies) where they add value.

BASIC QUALIFICATIONS:

• 4–6 years of full-stack development experience, with at least 1 year working with LLMs and AI systems.
• Strong backend engineering skills: proficiency in Node.js, Python, or similar; experience with API design, database systems, and distributed architectures.
• Hands-on AI/LLM experience: prompt engineering, working with OpenAI/Anthropic/Google APIs, implementing RAG, managing context windows, and optimizing for latency/cost.
• Frontend development capabilities: JavaScript/TypeScript, React or Vue, browser extension development, and building embeddable widgets.
• Systems design thinking: ability to architect scalable, fault-tolerant systems that handle the unique challenges of AI applications (non-determinism, latency, cost).
• Experience with AI operations: prompt versioning, A/B testing for prompts, monitoring agent behavior, and implementing guardrails.
• Understanding of vector databases, embedding models, and semantic search implementations.
• Comfortable working in fast-moving, startup-style environments with high ownership.

PREFERRED QUALIFICATIONS:

• Experience with advanced LLM techniques: fine-tuning, function calling, agent frameworks (LangChain, LlamaIndex, AutoGPT patterns).
• Familiarity with ML ops tools and practices for production AI systems.
• Prior work on conversational AI, chatbots, or virtual assistants at scale.
• Experience with real-time systems, WebSockets, and streaming responses.
• Knowledge of browser automation, web scraping, or RPA technologies.
• Experience with multi-tenant SaaS architectures and enterprise security requirements.
• Contributions to open-source AI/LLM projects or published work in the field.

WHAT WE OFFER:

• Competitive salary + meaningful equity.
• High ownership and the opportunity to shape product direction.
• Direct impact on cutting-edge AI product development.
• A collaborative team that values clarity, autonomy, and velocity.

• Looking for candidate who is enthusiastic to work in a Startup environment and build things from Scratch individually
• Candidate has past experience in scalable consumer facing applications managing latency and traffic
• FullStack Individual Contributor with experience to code at speed and take full product ownership

Experience: minimum 8 YRS

Location: Vile parle (E), Mumbai

Skill Set: 8 years plus as a full stack Java/JavaScript Developer

Micro Services, Distributed Systems

Cloud Services: AWS:(EC2,S3,Lambda,Load Balancing,Serverless),Kubernates

Programming Backend: Node.js,Mongodb,Java Spring,PostGreSQL

Programming FrontEnd: ,Angular/React

Queuing: Kafka

Methodologies: Agile Scrum

Responsibilities:

End to end coding ; from software architecture to managing scaling,of high throughput(100000)RPS high volume transactions.

DIscuss business requirements and timelines with management and create a task plan for junior members.

Manage the day to day activities of all team members and report

their work progress

Mentoring the team on best coding practices and making sure modules are Live

on time.

Management of security vulnerabilities.

Be a full individual contributor which means can work in a team as well as alone.

Attitude:

Passion for tech innovation and solve problems

GoGetter Attitude

Extremely humble and polite

Experience in Product companies and Managing small teams is a plus

What can you expect?

You will be part of the founding team at LDU and will be responsible for the end-to-end technology of the company including:

- Work with the founders on cutting edge technologies, including AI/ML, blockchain, computer vision, etc. across the tech-stack.

- Formulate long-term technology & product strategy along with implementation roadmap, while envisioning the tech-stack

required to scale the business 100X

- Architecting and engineering solutions across the entire technology stack including front-end, back-end, infrastructure,

architecture, server-side engineering, UI, etc. in line with the company's strategy.

- Work on the D2C website and enhance the user experience while increasing the company's online presence.

- Provide help to everyone in the team and greatly reduce the time and technical costs of team communication, technology

docking.

- Plan and collaborate with the other teams including marketing/ growth, customer success/ sales, design, operations, etc. to

implement new product features, growth hacks/ initiatives identified through user interviews/ insights, etc in a timely manner.

- Will be involved in a horizontal technical requirement, so should be able to make a prototype design for a product very rapidly

while executing the same with a wide range of techniques.

- Build processes/mechanisms to track the KPIs across product/ technology and ensure religious execution of the targets

- Build and lead the technology team including the engineering team, product team, Quality Assurance, etc.

- Awesome work-culture (flexible work timings; no need to wear formals; awesome snacks to name a few)

What are we looking for?

We are looking to onboard a Full Stack Software Engineer, who has a founder's mindset including the following traits:

- Experience of full stack development across web & mobile based technologies and should have scaled a business

- Ability to work across stacks like MEAN, MERN, LAMP, etc. seamlessly

- Ability to build scalable products/ platforms, fully redundant fault tolerant infrastructure while working on modern technologies.

- Versatile Developer/Engineer that can help on both ends of the website development and better the same by enhancing user

experience.

- Ability to Code in both frontend and backend of the site

- Stronghold in both front-end & back-end development/ algorithms with experience of building agile, highly scalable, data-driven

platforms from scratch

- Ability to be hands-on with coding across big data, mobile apps, AI & ML, analytics, DevOps, business intelligent solutions, etc.

apart from strategically guiding/ mentoring the team

- Stronghold in executing stuff on the ground and hustle around to Get things done

- Ability to think and see the big picture while focusing on short term goals and deliverables

- Leadership qualities to hire and build a kick-ass technology/ product team going forward

- Experience as a founder/ being part of founding team is huge plus but not mandatory

- Experience in the Fashion/ Apparel industry is a plus but not mandatory

• End-to-end full-stack development experience
• Full hands-on experience with at least one of the following languages Java, PHP, Python, .NET and code repositories like GIT, SVN
• Expertise with HTML5, JQuery, CSS
• Proficiency with front-end JavaScript frameworks like Angular, React, etc.
• Experience of designing and developing APIs in a micro-service architecture
• Experience with webserver technologies like Node.js, J2EE, Apache etc.
• Good understanding and working experience with either relational or non-relational databases like Oracle, MySQL, PostgreSQL, Mongo DB, Cassandra
• Good understanding of the changing trends of user interface guidelines for mobile apps and be able to transform apps to newer form factors
• Hands-on with Native UI Components
• Familiar with Cloud components & deployment procedures.
• Familiar with code repository

- Work with development teams and UI/UX designers to ideate software solutions.

- 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.

- 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 responsive design.

- Write technical documentation.

- Excellent verbal communication skills.

- Good problem-solving and logical skills.

Desired Profile:

Experience with web technologies including HTML, CSS, JS, AJAX, Bootstrap, Jquery etc.

- Experience in Web Application Development using PHP/MySQL.

- Knowledge of object-oriented PHP programming.

- Understanding of MySQL databases and their declarative query languages.

-  Responsible for handling a projects using MVC framework CodeIgniter/Laravel.

- Design interchange of data between the server and the client using RESTful/GraphQL.
- Understanding accessibility and security compliance.

- Build efficient, testable & reusable PHP modules in latest version.

- Should have basic knowledge in Scrum and Git.

Company: 3i Infotech Ltd

Location: Mumbai / Hyderabad

Job type: Full Time, Work from office

Looking for Core Java, Micro services, Spring Boot, Hibernate, Angular

Open Positions: Java Full - Stack Developer || 3 to 6 years exp – (Full stack 8)

Immediate Joiners

CTC: - 10 LPA

JD for Java Developer

Must Have Skills : Core Java ,Microservices , Angular8, Spring boot framework

Minimum 4-8 years of experience in design, development, and deployment of JAVA/J2EE-based applications, writing PL/SQL queries/store procedures.

Strong hands-on experience in design, development, and deployment of J2EE based application database design, PL/SQL complex queries, and Store procedures XML, HTML, JavaScript, AJAX

• Expertise on XML, HTML, JavaScript, AJAX
• Proficient in handling and writing complex PL/SQL queries and Stored procedures
• preferable work experience on JBOSS as an application server or any other J2EE application server
• Should have sound knowledge in product customization, implementation, and maintenance aspects
• Foresighted & good judgment in problem-solving.
• Capable of paying attention to detail.
• Good analytical and logical thinking.
• Prioritizing and organizing
• Team Player with a positive attitude.
• Process knowledge/Technical expertise
• Good Written and Verbal communication Skills

Technical Leader reporting to the CTO/CEO. Your responsibilities include the following, but are not limited to:

1. Architecting, Designing and Developing Software Programmes based on requirements provided
2. Designing and Developing with a high quality of code that is modular, scalable and re-usable at all times
3. Promote SRE (Site Reliability Engineering) to ensure all of the services are Highly-Available and Fault Tolerant at all times
4. Communicate effectively the system requirements to other software development teams
5. Involve pro-actively with client and their requirements
6. Evaluate and select appropriate software or hardware and suggest integration methods
7. Oversee assigned programs (e.g. conduct code review) and provide guidance to team members
8. Assist with solving technical problems when they arise
9. Ensure the implementation of agreed architecture and infrastructure
10. Address technical concerns, ideas and suggestions
11. Monitor systems to ensure they meet both user needs and business goals

Role Value: By developing highly performant, robust and scalable web services and back-ends, you will have an impact on the latency and accuracy. You will add value to our organization by mentoring and guiding engineers. By spotting opportunities in new technologies and identifying areas where they could be leveraged, you will have a deep impact on our tech stack and the way it benefits the business.

Role: You will work with stakeholders to identify the business problem, and then develop layered architectures that can be delivered in an incremental fashion. You will demonstrate a combination of technical leadership and business acumen by making appropriate trade-offs of technical integrity, complexity, time to market and cost. You are a stellar engineer and will write production quality code 70-80% of the time.

Responsibilities

• Design and implement features spanning across systems in a manner that satisfies requirements of performance, scale, security and robustness
• Contribute to improvement of technology and execution processes in the company
• Collaborate in setting technology standards with technology leaders across the company
• Serve as a knowledge centre on current and emerging technologies, and help train others when required
• Foster a strong technical culture by mentoring other engineers
• Keep up to date with the latest technologies, evaluate new tools
• Should open to work on Golang.

Relevant Experience and Qualifications

• Demonstrated expertise in system-level design of large scale distributed systems on OOPs, and experience with web services and service oriented architectures
• Have 7 - 13 years of professional experience in software development.
• Extensive experience with modern open source systems including relational / non relational data stores.
• Experience with AWS stack, at least the common datastores and services
• Experience with containerization technologies and concepts including Docker
• Basic knowledge about security concepts and secure coding
• Excellent analytical, conceptual and communication skills in spoken and written English.

Progression

• At Devtron Labs you have the opportunity to work in a collaborative and trusting environment allowing you to turn your ideas into reality
• be part of a strong team, where everyone’s opinion matters
• have flexible working hours, and learning & development opportunities
• We trust on you because we are having fully remote work culture
• work in a meritocracy, where you grow professionally by excelling at work

Equal Opportunities: Devtron Labs is, and always will be, committed to diversity and inclusion. We seek Devtronians from all backgrounds to join our teams and encourage everyone to bring their authentic, original and best selves to work.