Senior Java Developer

Job Description:

Technical Lead – Full Stack

Experience: 8–12 years (Strong candidates Java 50% - React 50%)

Location – Bangalore/Hyderabad

Interview Levels – 3 Rounds

Tech Stack: Java, Spring Boot, Microservices, React, SQL

Focus: Hands-on coding, solution design, team leadership, delivery ownership

Must-Have Skills (Depth)

Java (8+): Streams, concurrency, collections, JVM internals (GC), exception handling.

Spring Boot: Security, Actuator, Data/JPA, Feign/RestTemplate, validation, profiles, configuration management.

Microservices: API design, service discovery, resilience patterns (Hystrix/Resilience4j), messaging (Kafka/RabbitMQ) optional.

React: Hooks, component lifecycle, state management, error boundaries, testing (Jest/RTL).

SQL: Joins, aggregations, indexing, query optimization, transaction isolation, schema design.

Testing: JUnit/Mockito for backend; Jest/RTL/Cypress for frontend.

DevOps: Git, CI/CD, containers (Docker), familiarity with deployment environments.

Senior Software Engineer

Location: On-site, Panaji, Goa

About Joyful

Joyful is a leading AI-powered stakeholder communication management platform for voice of stakeholder analysis and contact center solutions. Our mission is to use AI to make all interactions between a company and its stakeholders joyful by removing friction. Joyful is a part of Germinait Solutions Pvt. Ltd.

Our  Joyful modules, Engage and Listen, help businesses understand and manage stakeholder interactions across digital channels. We enable companies to provide exceptional customer experiences while maximizing the productivity and efficiency of their support teams, all through one seamless platform.

At Joyful, we're committed to fostering meaningful interactions between stakeholders and brands by providing actionable insights, personalized replies, and a joyful experience for customers, users, and employees alike.

The Opportunity

We’re seeking a Senior Software Engineer who thrives on solving complex problems, architecting scalable systems, and bringing innovative AI-powered features to life. You will work on a modern, cloud-native stack—leveraging serverless deployment, microservices, and AI/ML integrations to build resilient, high-performance solutions.

In addition to delivering high-quality code, you’ll contribute to Joyful’s Vibe Coding culture—our approach to writing code that’s clean, collaborative, and a joy to work with.

What You'll Do

• Backend & Cloud Development
• Design, develop, and maintain scalable microservices for Joyful’s Engage and Listen platforms
• Build serverless applications and functions (AWS Lambda, Azure Functions, or GCP Cloud Functions) for rapid, cost-effective deployments
• Implement robust APIs and data pipelines optimized for performance and reliability
• Ensure security, compliance, and data privacy in all backend services
• AI-Powered Solutions
• Integrate AI/ML models into production workflows to enhance automation, personalization, and analytics
• Collaborate with data scientists to operationalize AI models for real-time and batch processing
• Build features that leverage NLP, sentiment analysis, and predictive analytics for stakeholder communication insights
• Vibe Coding Culture
• Write clean, well-structured, and maintainable code that engineers enjoy working with
• Participate in pair programming, peer reviews, and collaborative debugging sessions
• Share best practices and mentor junior engineers to raise the technical bar across the team
• Help maintain a development atmosphere that’s positive, creative, and focused on continuous improvement
• DevOps & Deployment
• Work closely with DevOps teams to optimize serverless deployments, CI/CD pipelines, and automated testing
• Ensure observability, monitoring, and alerting systems are in place for all deployed services
• Contribute to cost optimization strategies for serverless architectures
• Collaboration & Problem-Solving
• Partner with product managers, architects, and designers to translate business requirements into technical solutions
• Participate in sprint planning, backlog refinement, and retrospectives
• Troubleshoot production issues and drive root cause analysis for lasting fixes

What You'll Need

• 3+ years of experience in software development, preferably in SaaS or AI-driven products
• Strong expertise in backend development using Java (Spring Boot), Node.js, or Python
• Experience with serverless architectures (AWS Lambda, Azure Functions, or GCP equivalents)
• Solid understanding of cloud services (AWS, Azure, or GCP) and microservices design patterns
• Hands-on experience integrating AI/ML models into applications
• Familiarity with NLP, speech-to-text, or sentiment analysis APIs is a plus
• Knowledge of relational and NoSQL databases (PostgreSQL, DynamoDB, MongoDB, etc.)
• Experience with CI/CD pipelines, automated testing, and monitoring tools
• Strong problem-solving skills and ability to work in fast-paced, collaborative environments
• Passion for clean, maintainable code and contributing to a healthy team culture

Why Join Joyful?

• Work on AI-powered solutions that transform how businesses connect with their stakeholders
• Be part of a team that embraces serverless-first development and modern cloud-native architectures
• Thrive in a Vibe Coding culture where great engineering meets great energy
• Collaborate with talented peers in a supportive, innovation-driven environment
• Enjoy professional growth opportunities in a fast-scaling company
• Work from our beautiful Goa office while building solutions used worldwide

At Joyful, we believe that combining AI innovation, scalable cloud design, and a joyful coding culture leads to exceptional products. If you’re passionate about building intelligent, high-performance systems while keeping the engineering vibe positive, we’d love to hear from you!

Mandatory Skills

• Backend: Java, Spring Boot
• Frontend: Angular
• Database: Oracle / SQL
• Node js

Job Description

Contribute to all software-development life-cycle phases including: domain and non-domain problem analysis, solution requirement gathering and analysis, solution design, implementation, code review, source-code control, source building deployment, validation, QA support, and production support.

Essential Duties and Responsibilities

•⁠ ⁠Maintain and enhance multi-tier messaging application suites (Java EE, Springframework, WAS, Oracle, DB2, MQ)

•⁠ ⁠Build and maintain IRIS4Health middle-tier message applications (IRIS Interop/Cache; Java, Drools, Kafka, Restful, MLLP, SQL)

•⁠ ⁠Build and maintain multi-tier Clinical Toxicology application (Angular, Java EE, Springframework, WAS, RHOS, Cache, SQL)

•⁠ ⁠Maintain stat-tracking application (two-tier Delphi, MySQL)

•⁠ ⁠Maintain and enhance Cytogenetics three-tier application (Java EE, WAS, DB2, Oracle, SQL, )

•⁠ ⁠Maintain and enhance Fibrosure application (Java EE, WAS, Derby)

•⁠ ⁠Define develop, validate, and release software products via agile processes for small and large projects

•⁠ ⁠Support applications and people via Kanban processes

•⁠ ⁠Collaborate with laboratory users to analyze problems, design and implement solutions for enterprise systems

•⁠ ⁠Provide support and troubleshooting of production systems according to an on-call schedule

•⁠ ⁠Document problem analysis, solution design, implementations, and system support guidelines

•⁠ ⁠Coach and train team members across lab system organizations to support and develop Java applications

•⁠ ⁠Communicate effectively and constructively with developers, QA, business analysts, and system users

•⁠ ⁠Design and depict via UML relational DB table models, object-oriented class models, messaging models, configuration models

•⁠ ⁠Understand, document, support, and improve inherited code and processes

•⁠ ⁠Help document knowledge and discovery with peer developers

Minimum Requirements

•⁠ ⁠Solid Java EE experience (Servlets, JMS, JSP, EJB, JCA, and JPA) development and support

•⁠ ⁠Solid InfoSystems Cache/IRIS for Health development and support

•⁠ ⁠A minimum of 1 years of JPA/ORM (Hibernate), Junit, XML/XSD, JSON experience or equivalent

•⁠ ⁠Solid SQL (and optionally PLSQL) experience

•⁠ ⁠Experience with Oracle DB including explain plan and or other query optimization techniques/tools

•⁠ ⁠Excellent verbal and written communication skills

•⁠ ⁠Strong UML modeling, ER and OO design, and data-normalization techniques

•⁠ ⁠Strong code-factoring philosophies and techniques

•⁠ ⁠Eclipse or NetBeans (or equivalent) IDE

•⁠ ⁠Strong understanding of client/server design, and smart recognition of separation-of-concern like functional behavior versus non-functional performance

Desired Requirements

•⁠ ⁠Java EE, Angular

•⁠ ⁠InfoSystem's Cache and/or IRIS for Health

•⁠ ⁠Springframework

•⁠ ⁠Modern deployment architectures using containers, API Gateways, load balancers, and AWS cloud based environments

•⁠ ⁠WebSphere or WebLogic, RHOS

•⁠ ⁠RESTful Web Services

•⁠ ⁠JMS interfacing, Apache Kafka, and IBM MQ

•⁠ ⁠Node.js/NPM, Bootstrap, or similar frameworks

•⁠ ⁠Git/BitBucket (git flow), Maven, Nexus, UCD, Jira (Kanban and SCRUM), agile workflow

•⁠ ⁠Unix shell script, DOS script

•⁠ ⁠SQL (optionally PLSQL)

•⁠ ⁠Design patterns

•⁠ ⁠HTML5, CSS3, and TypeScript development

•⁠ ⁠Ability to transform specific domain requirements into generalized technical requirements, and design and implement abstract solutions that are understandable and scalable in performance and reuse

•⁠ ⁠HL7 and/or Healthcare and/or Clinical Toxicology

•⁠ ⁠Oracle, MySQL, Derby DB

Skillsets required

Fullstack PHP Developer

Backend in Core PHP with API integration experience Must have good US experience HTML5 CSS3 Angular JavaScript  

About [24]7.ai

[24]7.ai uses artificial intelligence, human insight, and deep vertical expertise to produce personalized, consistent, and satisfying customer experiences. The company's advanced conversational AI platform, combined with more than 20 years of contact center operational expertise, empowers the world's largest and most recognizable brands to deliver natural, frictionless conversations across all digital and voice channels. For more information, visit http://www.247.ai/">http://www.247.ai.

The Marketing Web Developer is part of [24]7.ai’s Marketing team. You will need to work collaboratively with local team members and others located in Bangalore and Toronto. This resource will be fully responsible for developing and maintaining the 247.ai website so they should be skilled in Drupal 9, HTML5, CSS, JS, Bootstrap, SASS, and possess hands-on experience with Drupal front-end theming, Integration, page development.

Areas of Responsibility

• Technical consultation and development of new pages / templates / modules in Acquia Drupal.
• Add/modify content, scripts, code, UI, modules, media etc. as per [24]7.ai Marketing and Acquia Web guidelines.
• Maintaining database, file system, dev, staging and production environments on Acquia Cloud as per [24]7.ai Marketing & Acquia guidelines.
• Check and apply Drupal security updates/patches as and when available on Drupal.org.
• Support [24]7.ai Web projects and go live/cutover activities.
• Liaise with [24]7.ai Marketing and our Acquia TAM to consult/fix issues that impact the website, and to ensure performance and availability.
• Skilled with SQL database management – from SQL to table manipulation.
• Manages all technical aspects of the CMS and Acquia development environments.
• Performance tuning, broken link fixes and implement SEO technical audits as provided by our SEO vendor.
• Uptime monitoring.
• Project ticketing (for internal tracking).
• 24x7 Emergency support.

Key Competencies

• Full-stack Drupal developer with expertise on Drupal 8 and 9 is required
• 3+ years of experience planning and implementing web projects
• Bachelor and Master Engineering degrees
• Languages: PHP, C, C#, Java, HTML5, CSS, SaaS, JavaScript
• Databases: MYSQL, Oracle
• Operating System: Linux/Abuntu, Windows
• Libraries: JQuery, Angular JS, Bootstrap
• Server side technologies: J2EE, ASP.net, JSP, Apache Solr, Apache
• Source control: SVN, Git, Github
• Must have excellent attention to detail and create clean, organized code as well as document modifications.
• Excellent problem solving and debugging skills.
• Knowledge of web performance optimization techniques.
• Knowledge of web vulnerability prevention methods.
• Experience working with cross-functional teams and receiving feedback from all levels. Work hours are shifted to overlap 2-3 hours with US Pacific Time zone as needed.
• Excellent written and verbal communication skills required.
• Ability to work within a rapidly changing environment, multi-task and prioritize.
• Must be innovative, self-driven, motivated, organized and detail-oriented
• Exhibit a high level of individual initiative.

MUST HAVE

• Design and implementation of the overall web architecture using React.js, Node.js, Mongo DB and AWS Lambda and Python
• Must have good knowledge of API
• Deployment and maintenance of AWS infrastructure -- Kubernetes, EC2, S3, Lambda
• Ensuring the entire stack is designed and built for speed and scalability
• Integrating our front-end UI with the constructed API
• Design and implementation of continuous integration
• Working knowledge of web-based application architectures and frameworks (including React) and the way it integrates with services.

Key Skillsets

• Node.js
• React.JS
• AWS
• MongoDB

• Deep knowledge in one or more domains of the study required for the function.
• Capability to write clear and structured technical documents.
• Ability to participate in multi-lingual meetings, very good communication skills, and able to work in a team.
• The capability of working in an international/multicultural environment.
• Ability to apply high quality standard

• Good experience in Angular.
• Good experience & knowledge of latest trends in Java, J2EE, Spring framework, Oracle, SQL, HTML, XML, XSD.
• Good knowledge of web services (SOAP, REST).
• Good knowledge of Cloud Technologies and Micro Services is an asset
• Experience with the following tools/ frameworks: Maven, GIT
• Experience in PKI is an asset

• The methodology is Agile
• Reporting tools are JIRA and Confluence

• Provision of expert advice and assistance, technology watch, architectural considerations, applicable standards, solution patterns, and best practices in Angular,
• J2EE, Web services, and SSL/TLS technologies
• Providing solution options
• Development of applications (full stack) using the technologies/tools mentioned in the specific expertise
• Review of Information Systems Infrastructure Architectures
• Performing PoC in the requested technologies
• Participation in user, service, and project meetings
• Create / update documentation as part of knowledge management
• Strive for innovation and open to new trends