Senior Full Stack Developer (.NET / React)

Role & Responsibilities

• Design, develop, and maintain scalable full stack applications using modern backend and frontend technologies.
• Build and maintain backend services and APIs using technologies such as C#, .NET, Java, or similar backend frameworks.
• Develop responsive and efficient frontend applications using Angular (14+), TypeScript, and JavaScript or similar frontend framework.
• Work on applications deployed in on-premise infrastructure environments, ensuring stability and performance.
• Implement and optimize search capabilities using OpenSearch.
• Design and maintain database structures using relational databases (SQL) and NoSQL databases such as MongoDB.
• Collaborate with cross-functional teams to design, implement, test, and deploy new product features.
• Troubleshoot issues, debug applications, and ensure high reliability and performance of the platform.
• Participate in Agile/Scrum development processes, collaborating closely with team members throughout the development lifecycle.
• Contribute to technical discussions, architecture decisions, and engineering best practices.

Ideal Candidate

• Strong Full stack software engineer having on premise applications development experience
• Mandatory (Experience 1): Must have 5+ years of experience as a Fullstack developer
• Mandatory (Experience 2): Must have hands-on experience in developing and supporting applications deployed on on-premise infrastructure (Not cloud)
• Mandatory (Backend): Must have strong backend development experience using technologies such as C#, .NET, Java, or similar backend frameworks
• Mandatory (Frontend): Must have strong frontend development experience using technologies such as React, Angular, TypeScript, JavaScript or similar frontend frameworks
• Mandatory (Core Skill): Must have exposure to OpenSearch
• Mandatory (DB): Exposure to SQL (Relational DBs) & NoSQL databases like MongoDB
• Mandatory (Company): B2B SaaS companies
• Mandatory (Note 1): This is a hybrid role in Udyog Vihar, Gurgaon
• Mandatory (Note 2): Role will convert into core team member, so need strong intent candidate
• Preferred (Skill): Experience leading technical design discussions, mentoring engineers, and setting engineering standards or architectural guidelines

Role Summary

We are looking for a seasoned Full Stack Developer with strong backend expertise in PHP (Laravel/Symfony) and modern frontend experience using React (Vue.js or Angular exposure is a plus). The ideal candidate should possess a full-stack mindset with experience in building scalable REST APIs and interactive UI applications.

Key Responsibilities

• End-to-end feature development (Backend + Frontend)
• Design and develop scalable, secure, and maintainable applications
• Build and optimize REST APIs and reusable UI components
• Participate in technical design discussions and code reviews
• Mentor junior developers and ensure coding best practices
• Collaborate with QA, DevOps, and Architects
• Focus on performance tuning and security enhancements

Must-Have Skills

• Strong hands-on experience in PHP (Laravel/Symfony)
• Experience building and consuming REST APIs
• Expertise in React.js (Vue.js/Angular acceptable)
• Strong knowledge of JavaScript/TypeScript
• Solid understanding of HTML5, CSS3
• Experience with scalable and maintainable application architecture

Nice-to-Have Skills

• Full-stack exposure with Node.js
• Experience with MongoDB / NoSQL databases
• Familiarity with Docker, CI/CD pipelines, Cloud platforms
• Knowledge of HCM and Payroll domain

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!

We are looking for a Fullstack Developer experienced with Fullstack JavaScript, Cloud and IoT solutions. For the agile development of our web, mobile, and cloud applications and IoT products, building efficient, reliable and scalable solutions. A hands-on coding role, where you will build and manage your own team.

Tasks:

• Development of modern JavaScript-based applications in the back-end
• Development, implementation and optimisation of innovative IoT products, web apps and new features
• Technical product design, solution architecture, specifications and implementation of Livello solutions
• Work with a cross-functional team to define, build, test, and deploy universal applications
• Version control with Git is part of your daily work and continuous integration
• Ensure the implementation of technical standards, quality assurance and best practices.

Requirements:

• Bachelor's degree in Computer Science or comparable field of study
• 3-4 years experience in agile software development.
• Proficiency in Javascript, Node.js, TypeScript, Reactjs, Reactnative and Nest.js, MongoDB.
• Experience with GraphQL and docker as well as state management solutions (Redux, Saga)
• Experience with test and deployment automation (Gitlab, Fastlane, Jest).
• Experience with MongoDB or any equivalent Database.
• Ability to work cooperatively and independently, analytical thinking, willingness to lead and take on responsibility
• Fluent in English.

Nice to have:

• Experienced in IoT-to-Cloud managed services, Microservices, Kubernetes and Docker on GCP / AWS
• Knowledge of IoT device management and message brokers like AMQP or MQTT.

Benefits

• A responsible position in a fast-growing and highly innovative start-up
• An agile and diverse team with colleagues from all over the world, working with our main office in Germany
• English speaking open work environment, with flat hierarchies and short decision-making paths
• Advanced technology stack leveraging cutting-edge IoT hardware and software
• Creative freedom for own ideas, projects and personal development.

Key Responsibilities:

• Experience with C#, .Net, Azure DevOps, React.Js or Angular.
• Build, Maintain and Integrate applications developed in different tech stack MVC, .Net, C#, SQL, Azure Stack
• Design and implement build-deployment-test automation.
• Microservices, Database design and implementation for
• relational and non-relational databases.
• Excellent interpersonal, verbal, and written communication skills.

Full Stack Developer Responsibilities:

• Developing front end website architecture.
• Designing user interactions on web pages.
• Developing back-end website applications.
• Creating servers and databases for functionality.
• Ensuring cross-platform optimization for mobile phones.
• Ensuring responsiveness of applications.
• Working alongside graphic designers for web design features.
• Seeing through a project from conception to finished product.
• Designing and developing APIs.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.

Requirements

• Degree in computer science.
• Experience with ( React+Node ) Or ( react + Angular) Or ( Node + Angular)
• Strong organizational and project management skills.
• Proficiency with fundamental front-end languages such as HTML, CSS, and JavaScript.
• Familiarity with JavaScript frameworks
• 
  
• Familiarity with database technology such as MySQL, Oracle, and MongoDB.
• Excellent verbal communication skills.
• Good problem-solving skills.
• Attention to detail.

We are looking for a highly skilled full-stack developer, who will be responsible for designing and developing front end web architecture, ensuring the responsiveness of applications, and working alongside the product owner, architects, analysts and designers for web services and web design features, among other duties

We Need a Driven Individual Who Can

• Design, develop, deploy in-premise products as well as robust, scalable cloud components for multi-tenant SaaS products
• Open to explore, adapt and apply multiple technologies
• Maintain attention to detail while working in a fast-paced environment
• Think creatively and justify design and code decisions
• Passionate about learning and experimenting with new cutting-edge technologies
• Ability to lead change and hands-on approach

Qualifications

• Experience in developing web applications and user interfaces
• Architecting solutions using ReactJS 
• Proficiency with NodeJS is a plus
• Proficiency with cloud services from AWS and Lambda functions is a plus
• Familiarity with tools like WebPack, Babel, Jest, Cypress, ESLint, and NPM/Yarn
• Strong grasp of data structures and algorithm design

What We Have To Offer

• Work with a performance-oriented team driven by ownership and open to experiments.
• Learn to design systems for high accuracy, efficiency, and scalability.
• No strict deadlines focus on delivering quality work.
• Meritocracy-driven, candid culture. No politics.
• Being an early hire will come with its own opportunities to hack your growth

About Company:

Will be developing mobile and web applications using latest technology. Should be good in analysing requirements and translate into applications. Good in understanding application flows.

Tech Skills –

MEAN (MongoDB, Express, Angular/React, Node.js) – Expert level - at least 2-3 full sized projects

Cloud technology – Familiar with using cloud technology (AWS, GCP etc) – Intermediate – Should be able to interact with the services from cloud (e.g. firebase etc)

HTML, CSS, Bootstrap, Java script – Intermediate level - Good understanding of concepts and should be able to realize application screens based on the UI provided by designers

Mobile technology – Hybrid (ionic, Cordova, capacitor, flutter), Native (Android, iOS) – Beginner – Should have understanding of concepts, good with basics