Java Full Stack Developer

Job Title : Product Engineer – Fullstack Developer

Experience Required : 4 to 6 Years

Location : Indiranagar, Bengaluru (Hybrid – 2 to 3 days/week in office)

Open to Remote : Yes (based on fit and preference)

Job Summary :

We are looking for a Fullstack JavaScript Engineer with a backend-heavy profile to join our innovative product team.

You’ll be involved across the full product lifecycle — from design and development to deployment and operations — for modern travel systems.

Ideal candidates should be strong in JavaScript, Node.js, and React.js, with a solid understanding of TDD, OOP, and CI/CD practices.

Mandatory Skills :

JavaScript, Node.js, React.js, REST/GraphQL APIs, OOP, TDD, CI/CD, Unit Testing, HTML/CSS, and experience in fullstack/backend-heavy development.

Key Responsibilities :

• Build robust features for our next-gen Trip Planning Systems.
• Work across the full stack: backend (Node.js, Kotlin), frontend (Vue.js/React.js), and APIs (REST/GraphQL).
• Participate in the entire SDLC – from planning and architecture to deployment and monitoring.
• Follow modern software engineering best practices like TDD, code reviews, continuous integration.
• Collaborate closely with cross-functional teams and contribute to technical design discussions.

Must-Have Skills :

• 4 to 6 Years of professional experience in fullstack development.
• Strong proficiency in JavaScript & Node.js.
• Hands-on experience with React.js (preferred over Angular).
• Proficiency in building REST or GraphQL APIs.
• Strong understanding of OOP and Test-Driven Development (TDD).
• Familiarity with CI/CD tools (e.g., Jenkins, GitHub Actions).
• Comfort working with multiple languages or stacks (e.g., Kotlin, Vue.js).
• Experience with unit testing and automation frameworks.

Nice-to-Have :

• Exposure to cloud infrastructure (e.g., AWS, Docker, Kubernetes, Terraform).
• Experience in both product and service-based companies.
• Contributions to code quality and code reviews.

You will:

• Collaborate with the I-Stem Voice AI team and CEO to design, build and ship new agent capabilities
• Develop, test and refine end-to-end voice agent models (ASR, NLU, dialog management, TTS)
• Stress-test agents in noisy, real-world scenarios and iterate for improved robustness and low latency
• Research and prototype cutting-edge techniques (e.g. robust speech recognition, adaptive language understanding)
• Partner with backend and frontend engineers to seamlessly integrate AI components into live voice products
• Monitor agent performance in production, analyze failure cases, and drive continuous improvement
• Occasionally demo our Voice AI solutions at industry events and user forums

You are:

• An AI/Software Engineer with hands-on experience in speech-centric ML (ASR, NLU or TTS)
• Skilled in building and tuning transformer-based speech models and handling real-time audio pipelines
• Obsessed with reliability: you design experiments to push agents to their limits and root-cause every error
• A clear thinker who deconstructs complex voice interactions from first principles
• Passionate about making voice technology inclusive and accessible for diverse users
• Comfortable moving fast in a small team, yet dogged about code quality, testing and reproducibility

Looking for a candidate who can join us immediately and would like to hire a individual contributor and also can adapt as a team-player.

What we are looking for:

• Hands-on experience with key development technologies including Java, J2E, Springboot, React, HTML/CSS/Javascript. Others such as Python, Angular would be beneficial.
• Knowledge of databases, integration architectures/patterns and data modelling essential.
• API best practices, application servers, cloud services (especially AWS) and code quality/secure development all essential. Generative AI knowledge is a must.
• Experience of DevOps, CI/CD and source control tools and best practices required.
• Able to work collaboratively to create POCs and provide technical recommendations for solutions to problems with supporting evidence.
• Excellent written and verbal communication skills needed to effectively collaborate with cross functional teams.
• Prior experience with SCRUM/Agile methodologies with enterprise-level application development projects with the Ability to balance business priorities with technical requirements and manage multiple tasks under tight deadlines.

Responsibilities:

• Be a strong individual contributor in all aspects of software development lifecycle following agile methodologies (Analyze, design, develop, test, debug, and deploy phases of development projects) to deliver high quality solutions that meet business requirements.
• Experience in working with multiple application environments, and support business continuity across multiple geographic regions inclusive of Implementing DevOps culture, and use of tools to ensure Continuous Integration and Continuous Delivery for application deployment and adhering to S&P security requirements for vulnerability remediation.
• Perform reviews and integration testing to assure code quality and security standards are met. 
• Support the user base, assisting with tracking down issues and analyzing feedback to identify product improvements; Gather information and feedback from end users to understand and develop project requirements.
• Understand and commit to the culture of S&P Global: the vision, purpose, and values of the organization. 

• In this role, you should be able to work independently with little supervision.
• You should have excellent organization and problem-solving skills.
• If you also have hands-on experience in software development and agile methodologies, we’d like to meet you.
• You will be responsible to develop high-quality software that is aligned with user needs and business goals.

• 5 to 10 years of end-to-end development using Java & UI technology (ReactJS)
• Good knowledge of any relational database).
• Experience in JavaScript along with an OOP language
• Well versed with testing concepts and methodologies
• Agile/Scrum development and full SDLC from development to production deployment.
• Analytical mind with problem-solving aptitude.
• Ability to work independently.
• Excellent written and oral communication skills.

• Proficiency with fundamental front end languages such as HTML, CSS and JavaScript.
• Familiarity with JavaScript frameworks such as Angular JS, React.
• Proficiency with server side languages such as Python, Java, PHP and .Net.
• Familiarity with database technology such as MySQL, Oracle and MongoDB.
• Excellent verbal communication skills.