Senior Java Full Stack Developer

We are seeking a talented Full Stack Developer to design, build, and maintain scalable web and mobile applications. The ideal candidate should have hands-on experience in frontend (React.js, Next.js), backend (Node.js, Express), databases (PostgreSQL, MongoDB), and Python for AI/ML integration. You will work closely with the engineering team to deliver secure, high-performance, and user-friendly products.

Key Responsibilities

• Develop responsive and dynamic web applications using React.js, Next.js and modern UI frameworks.
• Build and optimize REST APIs and backend services with Node.js and Express.js.
• Design and manage PostgreSQL and MongoDB databases, ensuring optimized queries and data modeling.
• Implement state management using Redux/Context API.
• Ensure API security with JWT, OAuth2, Helmet.js, and rate-limiting.
• Integrate Google Cloud services (GCP) for hosting, storage, and serverless functions.
• Deploy and maintain applications using CI/CD pipelines, Docker, and Kubernetes.
• Use Redis for caching, sessions, and job queues.
• Optimize frontend performance (lazy loading, code splitting, caching strategies).
• Collaborate with design, QA, and product teams to deliver high-quality features.
• Maintain clear documentation and follow coding standards.

Profile: MERN Stack Developer

📍 Location: Andheri East, Mumbai

🏤 Work Mode: 5 Days WFO

⏰ Experience: 2+ Years

(Only immediate joiners & candidates who have completed notice period)

What We're Looking For:

✅ 2+ years of MERN stack development experience

✅ MongoDB - database design and complex queries

✅ Express.js - server-side application development

✅ React.js - component-based UI development

✅ Node.js - backend JavaScript runtime

✅ Kafka - event streaming and messaging

✅ Docker - containerization and deployment

✅ Redis - caching and session management

✅ RESTful API design and integration

A full stack developer job description for MERN stack developers centers on designing, developing, and maintaining robust web applications using MongoDB, Express.js, React, and Node.js as core technologies.

Responsibilities

• Develop and maintain scalable web applications using the MERN stack.
• Build interactive and responsive user interfaces with React.
• Implement server-side APIs and business logic using Node.js and Express.js.
• Design, model, and manage databases with MongoDB to ensure efficient data storage and retrieval.
• Integrate front-end with back-end systems and third-party services.
• Optimize applications for speed and scalability, troubleshoot and debug code, and ensure reliability.
• Collaborate with other developers, designers, and stakeholders in an agile environment to clarify requirements and deliver solutions.
• Implement security best practices and protect sensitive data.
• Participate in code reviews and mentor junior developers.

Requirements

• Proven experience with the MERN stack (MongoDB, Express.js, React, Node.js).
• Strong skills in JavaScript, HTML5, and CSS3.
• Familiarity with RESTful API design, version control systems (Git), and front-end frameworks like Bootstrap or Material-UI.
• Understanding of database design, schema management, and NoSQL principles.
• Problem-solving ability and communication skills.
• Bachelor's degree in computer science or related field (preferred).
• Experience working collaboratively in a team-oriented environment.

Key Skills

• JavaScript, React.js, Node.js, Express.js, MongoDB.
• HTML/CSS, RESTful APIs, Git.
• Familiarity with agile methodologies and UI/UX best practices.
• Testing, debugging, code optimization, and deployment.

• Working directly with clients to understand requirements for a green field development
• Designing the technology and cloud infrastructure architecture to achieve the functional and nonfunctional requirements
• The product you will be working on needs to scale up to support millions of users an efficient micro service distributed architecture
• Solution needs to be easy to deploy and manage on multiple cloud providers (AWS, GCP or Azure)
• Mentoring, guiding and training the team on various technology, quality and security aspects
• Guiding the team to implement automated CI/CD processes
• Strong analytical, problem solving and data analysis
• Excellent communication, presentation and interpersonal skills are a must
• Micro service frameworks such as Java SpringBoot
• Design and implement automated unit and integration tests
• Writing scalable, robust, testable, efficient, and easily maintainable code
• Familiarity with most AWS Services - EC2, ECS, RDS, ECR, S3, SNS, SQS, and more
• Experience with Docker and Kubernetes
• Deploying and Scaling microservices to AWS
• Hands-on experience with AWS cloud platform in evaluation and cost estimation

Experience : 10+ years

• Multiple consumer-grade B2B apps for our agency partners, powering near real-time quoting, streamlined policy administration and claims management
• Safety platform to help transportation fleets understand and improve their safety
• Lead generation apps to build our customer acquisition funnel

• You have experience with software development/coding.
• You learn quickly and can operate independently. You're not afraid to take something on just because you don’t know how to do it yet.
• You not only have the ability or skill to communicate effectively but also have the willingness to be open and honest in your communication.
• You have a growth mindset. You take data-driven decisions and are constantly looking for opportunities to optimize and enhance our customer experience.

• Competitive weekly pay
• Reimbursement for your home-office setup
• Weekly team events to connect with fun, bright coworkers
• Lots of swag!

We need an experienced engineer who can lead our existing team and product. 

Job description 

• Must possess strong analytical skills to be able to break down complex problems into smaller atomic units of work.
• Must be able to develop application modules independently and fix any bugs promptly.
• Do unit testing for the development work carried out.
• Act as a mentor to the junior developers and provide technical guidance.
• Troubleshoot problems and provide solutions.
• Conduct and participate in project planning & scheduling, design discussions, and provide assistance during testing.
• Willing to learn and adopt new technologies in a short period of time as required by the project.
• Will require to produce technical documentation as the requirements of the project.
• Remain up to date with the modern industry practices involved in designing & developing high-quality software.
• Should be able to do performance engineering and identify and fix bottlenecks

Job Requirements

• Good knowledge of Node.js, Express.js, React
• Need clear understanding of JavaScript and Typescript.
• Sound understanding of MVC and design patterns.
• Excellent grasp of data structures and designing and developing ReST APIs.
• Good skills of NoSQL (MongoDB or equivalent).
• Must have at least 3 years’ experience in MEAN/MERN Stack development.
• Experience in developing responsive web applications.
• Good communication skills.
• Sound understanding of Agile and Scrum methodologies and ability to participate in local and remote Sprints.
• Good grasp of UI / UX concepts.
• Should have experience in using Git & VSCode.
• Knowledge of AWS and Postman will be considered positively.

Job Description

• Planning with the product advancement group to finish item thoughts 
• Utilizing different programming to plan the items. Has hands on coding experience across different technology stacks. Willing to experiment & explore across technologies and identify the best suited
• Performing constant market analysis of competing products
• Testing item models to control configuration blemishes 
• Talking with delivery team to work out financially savvy producing methodology and solutions. 
• Ability to ideate, code, setup a prototype and on approval design the entire application as per business requirements.
• Complete knowledge of Full stack development. .
• As a product engineer, our Super Hero is expected to participate in all parts of development life cycle. Create user friendly, cost effective product design.
• Ability to research w.r.t features, UX, functionalities and finally testing before being rolled out.

Job Requirements

• Familiarity with all stages of product development life cycle.
• Extensive experience in writing codes, deep understanding of platform architecture, ability to design & develop solutions & knack towards problem solving.
• Deep engineering skills in various technology stacks, ability to handle big data concepts, keen to work in IIOT & machine data domain.  
• Ability to effectively present ideas & communicate with team members within & outside organization, ability to write routine reports and correspondence and ability to speak confidently & effectively before groups of customers or other Donaldson colleagues.
• We are happy to have a technology geek take this position as long as s/he is able to align the product roadmap to organization’s growth roadmap.
• Good communication and presentation skills
• Effective written and verbal skills in English Language are mandatory.
• This is a global role and the candidate may be required to travel to Smart Ship Hub’s different delivery centres.

Experience Requirements & Educational Qualification

• Atleast 5 years of proven product engineering experience. Must have: managed product life cycle, knowledge of product roadmap, extensive coding experience.
• Should be open to working in Disruptive Application Design domain, IIOT, Smart Sensors, Big data