Java Fullstack Developer

Why This Role Matters

We’re looking for a Principal Engineer to lead the architecture and execution of our GenAI-powered, self-serve marketing platforms. You will work directly with the CEO to shape, build, and scale products that change how marketers interact with data and AI. This is intrapreneurship in action — not a sandbox innovation lab, but a real-world product with traction, velocity, and high stakes.

What You'll Do

• Co-own product architecture and direction alongside the CEO.
• Build GenAI-native, full-stack platforms from MVP to scale — powered by LLMs, agents, and predictive AI.
• Own the full stack: React (frontend), Node.js/Python (backend), GCP (infra), BigQuery (data), and vector databases (AI).
• Lead a lean, high-caliber team with a hands-on, unblock-and-coach mindset.
• Drive rapid iteration with rigor, balancing short-term delivery with long-term resilience.
• Ensure scalability, observability, and fault tolerance in multi-tenant, cloud-native environments.
• Bridge business and tech — aligning execution with evolving user and market insights.

What You Bring

• 8–12 years of experience building and scaling full-stack, data-heavy or AI-driven products.
• Fluency in React, Node.js, and Google Cloud (Functions, BigQuery, Cloud SQL, Airflow, etc.).
• Hands-on experience with GenAI tools (LangChain, OpenAI APIs, LlamaIndex) is a bonus.
• Track record of shipping products from ambiguity to impact.
• Strong product mindset — your goal is user value, not just elegant code.
• Architectural leadership with ownership of engineering rigor and scaling best practices.
• Startup or founder DNA — you’ve built things from scratch and know how to move fast without breaking things.

Who You Are

• A former founder, senior IC, or tech lead who’s done zero-to-one and 1-to-n scaling.
• Hungry for ownership and velocity — frustrated by bureaucracy or stagnation.
• You code because you care about solving real problems for real users.
• You’re pragmatic, hands-on, and grounded in first principles.
• You understand that great software isn't just shipped — it's hardened, maintained, and evolves with minimal manual effort.
• You’re open to evolving into a founding engineer role with influence over the tech vision and culture.

What You Get

• Equity in a high-growth product-led startup.
• A chance to build global products out of India with full-stack and GenAI innovation.
• Access to high-context decision-making and direct collaboration with the CEO.
• A tight, ego-free team and a culture that values clarity, ownership, learning, and candor.

Why YOptima?

YOptima is redefining how leading marketers unlock growth through full-funnel, AI-powered media solutions. As part of our growth journey, this is your opportunity to own the growth charter for leading brands and agencies globally and shape the narrative of a next-generation marketing platform.

Ready to lead, build, and scale?

We’d love to hear from you.

Founding Engineer - LITMAS

About LITMAS

LITMAS is revolutionizing litigation with the first AI-powered platform built specifically for elite litigators. We're transforming how attorneys research, strategize, draft, and win cases by combining comprehensive case repositories with cutting-edge AI validation and workflow automation. We are a team incubated by experienced litigators, building the future of legal technology.

The Opportunity

We're seeking a Founding Engineer to join our core team and shape the technical foundation of LITMAS. This is a rare opportunity to build a category-defining product from the ground up, working directly with the founders to create technology that will transform the US litigation market.

As a founding engineer, you'll have significant ownership over our technical architecture, product decisions, and company culture. Your code will directly impact how thousands of attorneys practice law.

What You'll Do

• Architect and build core platform features using Python, Node.js, Next.js, React, and MongoDB
• Design and implement production-grade LLM systems with advanced tool usage, RAG pipelines, and agent architectures
• Build AI workflows that combine multiple tools for legal research, validation, and document analysis
• Create scalable RAG infrastructure to handle thousands of legal documents with high accuracy
• Implement AI tool chains to provide agents tool inputs
• Design intuitive interfaces that make complex legal workflows simple and powerful
• Own end-to-end features from conception through deployment and iteration
• Establish engineering best practices for AI systems including evaluation, monitoring, and safety
• Collaborate directly with founders on product strategy and technical roadmap

The Ideal Candidate

You're not just an AI engineer, you're someone who understands how to build reliable, production-grade AI systems that users can trust. You've wrestled with RAG accuracy, tool reliability, and LLM hallucinations in production. You know the difference between a demo and a system that handles real-world complexity. You're excited about applying AI to transform how legal professional’s work.

What We're Looking For

Must-Haves

• Deployed production-grade LLM applications with demonstrable experience in:
• Tool usage and function calling
• RAG (Retrieval-Augmented Generation) implementation at scale
• Agent architectures and multi-step reasoning
• Prompt engineering and optimization
• Knowledge of multiple LLM providers (OpenAI, Anthropic, Cohere, open-source models)
• Background in building AI evaluation and monitoring systems
• Experience with document processing and OCR technologies
• 3+ years of production experience with Node.js, Python, Next.js, and React
• Strong MongoDB expertise including schema design and optimization
• Experience with vector databases (Pinecone, Weaviate, Qdrant, or similar)
• Full-stack mindset with ability to own features from database to UI
• Track record of shipping complex web applications at scale
• Deep understanding of LLM limitations, hallucination prevention, and validation techniques

Tech Stack

• Backend: Node.js, Express, MongoDB
• Frontend: Next.js, React, TypeScript, Modern CSS
• AI/ML: LangChain/LlamaIndex, OpenAI/Anthropic APIs, vector databases, custom AI tools
• Additional: Document processing, search infrastructure, real-time collaboration

What We Offer

• Significant equity stake true ownership in the company you're building
• Competitive compensation commensurate with experience
• Direct impact your decisions shape the product and company
• Learning opportunity work with cutting-edge AI and legal technology
• Flexible work remote-first with a global team
• AI resources access to latest models and compute resources

Interview Process

One more thing: Our process includes deep technical interviews and fit conversations. As part of the evaluation, there will be an extensive take-home test that should expect to take at least 4-5 hours depending on your skill level. This allows us to see how you approach real problems similar to what you'll encounter at LITMAS.

Required a full stack Senior SDE with focus on Backend microservices/ modular monolith with 3-4+ years of experience on the following:

• Bachelor’s or Master’s degree in Computer Science or equivalent industry technical skills
• Mandatory In-depth knowledge and strong experience in Python programming language.
• Expertise and significant work experience in Python with Fastapi and Async frameworks. 
• Prior experience building Microservice and/or modular monolith.
• Should be an expert Object Oriented Programming and Design Patterns.
• Has knowledge and experience with SQLAlchemy/ORM, Celery, Flower, etc.
• Has knowledge and experience with Kafka / RabbitMQ, Redis.
• Experience in Postgres/ Cockroachdb.
• Experience in MongoDB/DynamoDB and/or Cassandra are added advantages.
• Strong experience in either AWS services (e.g, EC2, ECS, Lambda, StepFunction, S3, SQS, Cognito). and/or equivalent Azure services preferred.
• Experience working with Docker required.
• Experience in socket.io added advantage
• Experience with CI/CD e.g. git actions preferred. 
• Experience in version control tools Git etc.

This is one of the early positions for scaling up the Technology team. So culture-fit is really important.

• The role will require serious commitment, and someone with a similar mindset with the team would be a good fit. It's going to be a tremendous growth opportunity. There will be challenging tasks. A lot of these tasks would involve working closely with our AI & Data Science Team.
• We are looking for someone who has considerable expertise and experience on a low latency highly scaled backend / fullstack engineering stack. The role is ideal for someone who's willing to take such challenges.
• Coding Expectation – 70-80% of time.
• Has worked with enterprise solution company / client or, worked with growth/scaled startup earlier.
• Skills to work effectively in a distributed and remote team environment.

Key Skills: Java, Node.js, React js, PHP , JSON, Mongo DB, Rest APIs, Word Press, Web Services, Mern Stack, Mean Stack, Express Framework, Bootstrap with Angularjs.

1. Overall 3 to 4+ years of experience is required with the following skills.
2. Strong knowledge of JavaScript, Nodejs, Angular. Expresses, Reactjs, AJAX, and jQuery
3. Good working knowledge of working database platforms like dynamo DB MYSQL and Mongo DB Experience
4. working on wasp user interface technologies HTML and JavaScript, Knowledge of web servers and app servers AWS and MongoDB.
5. You need to work in an agile cross-functional team to create a customer experience and implement high-quality code into production.
6. Work on bug fixes and improvement of application performance.
7. Hands on experience with a framework with Angular JS and Node JS
8. Hands on experience with utility library with jQuery lib, bootstrap.js, Angularjs, Bootstrap, Date Picker, canvasjs.min.js, Socket.io, Moment timezone.js
9. Good Knowledge of AWS Amazon web services.
10. Should be Proficient in Linux
11. Experience on Node.js and Json rest APIs developments and web services knowledge are highly preferred.
12. Knowledge of cross-browser platform issues and implementation is highly preferred.

A highly motivated and passionate individual who has experience in executing end to end web based application projects and bringing them to production quickly and with high quality. Passionate about building flexible and scalable solutions with an eye for detail and can weigh pros and cons to find best possible solutions.

Responsibilities:

• Collaborate with Product Manager and Engineering Manager to plan, implement and deliver tasks and modules on a timely basis with best practices and adherence to SOPs.
• Understand the product specification and be able to ask questions and gather information and feedback to build a well rounded solution.
• Deliver end to end applications starting from front end web development, back end development, middleware integration and persisting data in no SQL or RDBMS databases.
• Should be able to use existing front-end components to build web based UI interfaces.
• Strong technical design approach to problem solving for backend services.
• Should be able to communicate and defend the tech design choices taken for long term scalability and maintainability.
• Play the role of an unblocker in a tight scrum environment.
• Should be able to help other developers with challenges and help achieve milestones as per plan.

• Prioritise to manage ad-hoc requests in parallel with ongoing projects.
• Document API specification, technical design and other key information for all projects/modules/services owned

Requirements:

• A highly talented developer with 4-7 years of hands-on experience in building secure and scalable web-based applications using Java in backend and JS-based frontend frameworks
• Strong knowledge of Java 8+, databases (SQL and NoSQL), MySql, Mongo
• Experience working with Cassandra, Spring Boot, Apache Spark, Kafka, RabbitMQ is highly desirable
• Working knowledge of any one or more of AngularJS/ReactJS/VueJS and CSS3, HTML5
• Strong experience in data modeling for data storage tools in SQL; experience with noSQL is highly desirable.
• Experience building scalable solutions for 2x, 5x and 10x growth with high quality and flexibility.
• Practitioner of test-driven development practices.
• Experience in creating and adhering to best practices for development
• Experience working with container technologies like Docker and knowledge of CI/CD processes for automated integration and deployment.
• Basic knowledge of AWS preferred
• Strong experience in Microservices (SRP) paradigm
• Willing to learn new technologies (Golang)

• Qualification B.Tech/M.Tech/MCA(IT/Computer Science)
• Years of Exp 4 - 7 years

• Writing reusable, testable, and efficient code.
• Perform Code reviews of other team members.
• Design and implementation of low-latency, high-availability, and performant applications
• Integration of user-facing elements developed by front-end developers with server-side logic
• Implementation of security and data protection
• Integration of data storage solutions.
• Liaise with the product management team and architect the application / improve the architecture wherever necessary.

Skills And Qualifications

• 7+ years of the overall experience.
• Strong Practical knowledge and understanding of RESTful API
• Excellent Python coding skills and understanding of Python best practices (PEP8)
• Should handle a team of minimum 4 members
• Excellent detail-oriented, problem-solving skills and the ability to quickly learn and apply new concepts, principles, and solutions
• 7+ years of good hands-on experience in Python, with knowledge of Django
• Good hands-on experience in SQL Database (MYSQL / Postgres)
• Familiarity of Front End Development ( ReactJS )
• Knowledge of user authentication and authorization between multiple systems, servers, and environments
• Able to create database schemas that represent and support business processes.
• Strong unit test and debugging skills
• Proficient understanding of code versioning tools GIT.
• Has experience of working in an Agile Environment.
• Fluent in English (written and oral) Fluency in a second language is preferred.
• Comfortable working remotely with great communication skills for a remote work environment.

Bonus qualifications

• Knowledge of any cloud. ( Especially Azure )

Skills:

• Proficiency with JavaScript and HTML5
• Minimum 2+ years of hands-on experience with AngularJS and Angular Frameworks
• Experience with Java, JSON, Spring Boot and Hibernate 
• Experience with MYSQL databases
• Familiarity with Linux environments
• Experience with GIT 
• Hands on experience with AWS S3 is preferred
• Experience with web servers & application servers such as Apache and Nginx is good to have.

Responsibilities: 

• Design and develop client-side and server-side architecture
• Develop and manage well-functioning database
• Implementation of approved user interface
• Design and construction of REST APIs
• Server management and deployment for the relevant environment

About the Role:

We are looking for passionate and highly motivated Technologist who has delivered rock solid software solutions for industry leading enterprises with lean and agile teams. We are looking for an engineer with a strong technical background, thorough understanding of testing methodologies, a passion for quality, and a desire to make a positive change in our products. 

Roles & Responsibilities

• Work on FieldEZ product development
• Perform requirements analysis, design, coding, unit testing, reviewing and implementation
• Work closely with the manager to prioritize the requirements based on technical dependencies for product development
• Provide mentoring and coaching to junior team members
• Team management and customer management

Skills & Experience

• 5 to 7 years of experience in Information Technology
• Deep understanding and hands on experience in Core Java, J2EE, JavaScript, HTML, Spring, Spring Security, Spring Boot, Microservices, Hibernate, JPA, CSS3, Angular 2+, Jquery, SQL, MySQL, PostgreSQL, Scripting, Stored Procedures, Jenkins, Git
• Experience with REST APIs
• Work on Design patterns, UML Design (Any UML tool is fine), Application and DB clustering.
• Very good understanding of database (MySQL or Oracle), knowledge in query performance optimization
• Knowledge of development lifecycle, standards, approaches, utilities, and environment
• Exposure to responsive / progressive web development would be an added advantage.

Educational Qualification

B.Tech/ B.E or M.Tech/M.E (Computer Science/Information Technology/Electronics & Communication/ Information Science) , MCA from a reputed School and University.