Senior Full Stack Engineer (React Native)

We are looking for a MERN Stack Developer with 2+ years of real-world experience who thinks beyond CRUD APIs and UI screens. This role is for someone who understands how full-stack systems are designed, cares about scalability, performance, security, and clean architecture, and takes ownership of features end-to-end.

We value ownership, speed, clean code, and smart problem-solving. If you enjoy building products from scratch, thinking in systems, and shipping meaningful features—not just “finishing tasks”—this role is for you.

🧠 Key Responsibilities

• Design, develop, and maintain full-stack applications using MongoDB, Express, React, and Node.js
• Build scalable and maintainable backend APIs with proper validation, error handling, and security
• Develop clean, reusable, and performant React components
• Design database schemas and optimize queries for performance and scalability
• Translate product and business requirements into solid technical solutions
• Design frontend and backend architecture that can scale as the product grows
• Handle authentication, authorization, roles, and permissions
• Work with async operations, background jobs, and API integrations
• Manage application state properly (React state, context, or state libraries)
• Handle edge cases: loading, failure states, retries, and fallbacks
• Write clean, readable, and well-structured JavaScript / TypeScript code
• Follow and continuously improve coding standards and best practices
• Debug production issues using logs, reasoning, and root-cause analysis
• Review PRs, give constructive feedback, and contribute to team learning
• Work with designers to deliver good UX, not just “working UI”
• Collaborate closely with QA, design, and product teams
• Think ahead—identify technical debt, performance bottlenecks, and improvement areas
• Use AI tools responsibly to speed up development, debugging, and learning (with understanding)

✅ Qualifications Must Have

• 2+ years of hands-on experience with the MERN stack
• Strong knowledge of JavaScript and TypeScript, including OOP concepts
• Solid experience with Node.js & Express
• Hands-on experience with MongoDB, schema design, indexing, and aggregation
• Experience building and consuming REST APIs
• Strong understanding of async/await, promises, event loop
• Knowledge of HTML, CSS, responsive design (Tailwind / Bootstrap preferred)
• Experience with React hooks, component lifecycle, and state management
• Use React performance optimizations such as: React.memo useCallback, useMemo
• Implement code splitting and lazy loading using dynamic imports
• Work on or understand micro-frontend architecture and module federation
• Experience handling authentication (JWT, sessions, OAuth)
• Familiarity with Git, code reviews, and basic CI/CD concepts
• Exposure to real production issues (performance, bugs, scaling, failures, debugging)

Good to Have (Big Plus)

• Knowledge of Next.js or server-side rendering concepts
• Experience with Redis, queues (kafka, rabbitmq), or background jobs
• Experience with Docker, cloud deployments, or Nginx
• Understanding of performance tuning and lazy loading
• Experience working in a startup or fast-paced environment

❌ Who Should Not Apply

Please do not apply if:

• You only focus on “closing tickets” without questioning why something is being built
• You lack strong JavaScript fundamentals (arrays, objects, async/await, promises, event loop)
• You mostly copy-paste code without understanding it
• You never think about edge cases, failures, retries, or resilience
• You depend heavily on others for architecture or technical direction
• You avoid responsibility and say things like:
• “Frontend issue”
• “Backend issue”
• “It was already like this”
• “QA didn’t catch it”
• You are not comfortable explaining your code, decisions, or design choices
• You expect exact step-by-step instructions for every task
• You are not interested in learning and improving as a full-stack engineer

👉 This role is not for task executors.

We want problem solvers, thinkers and owners.

JD | Senior Software Engineer (J2EE/JEE Full Stack)

Summary

Looking for a senior developer who has strong skills in front-end and back-end technologies including HTML, CSS, JavaScript, Java, JSP, Servlets, Ajax, SQL, Database Stored Procedures, and J2EE frameworks.

This position requires J2EE Full Stack development experience of 2 to 6 years. Further it requires good multitasking and communication skills. Further it requires good communication skills - written and spoken, and good multi-tasking skills where he/she can manage multiple tasks with high productivity. The candidate should also have good aptitude, should be able to learn iTech’ s cloud-based products within a reasonable time, hardworking and should have the ability to go the extra mile to complete the assigned tasks on time.

Essential Duties and Responsibilities

• Develop the various modules, features and reports in our products using JEE and database technologies/frameworks
• Take responsibility and work with peer developers in the team in completing the features/tasks assigned.
• Perform code review with peer developers on various features in the product.
• Handle the support tickets which requires development effort and fix them.
• Learning and implementing new front-end and back-end technologies.
• Mentor and guide junior developers.
• Involve in building and deploying the product version in UAT and Production environment.
• Work on multiple versions of the projects in parallel.
• Perform other related duties as assigned.
  • Perform other related duties as assigned.

Qualifications

• Tech/B. E./MCA/M. Tech with 2 to 6 years of related work experience
• Working knowledge in front-end and back-end technologies including HTML, CSS, JavaScript, Java, JSP, Servlets, Ajax, SQL, Database Stored Procedures, and frameworks such as Spring, Bootstrap, jQuery.
• Exposure to SOAP/RESTful Web Services, XML/JSON technologies, JBoss/WildFly Application Server, PostgreSQL database is a bonus
• Knowledge in any tools including Eclipse IDE, Source Code Control Systems such as Git, and Software Configuration Management systems would be a plus.

Nature of project – Product development.

Key skills: Java full stack developer with React Js experience.

Key Responsibilities

• Advance the state of the art in building Microservices with Java and frontend applications with React JS.
• Design and Develop Cloud based, web applications for SMBs
• Design and develop the front end for customer-facing applications using MVC framework
• Design and develop supporting components and Microservices for the backend tiers focusing on fault-tolerance and scalability in a multi-tenant B2B2C environment
• Team with top-notch engineers, product managers, Dev Ops and QA following agile development methodologies
• Review functional requirements, providing technical feedback on feasibility and architectural approach and framework.
• Develop technical specifications
• Contribute to test plan development.
• Create Prototype and/or Proof of Concepts (POCs) when necessary
• Act in a technical leadership capacity: Mentor junior engineers and new team members, perform code reviews and apply technical expertise to challenging programming and design problems
• Manage and maintain Cloud infrastructure
• Maintain and improve the functionality and performance of the existing web applications; refactor legacy codebase
• Help shape and execute the technical roadmap to develop next generation features; integrate corporate- and product-level architecture principles and goals into the teams project work through designs, implementation strategies, and project planning.
• Drive a culture of quality, technical curiosity, continuous improvement, and evidence-based data driven decision making in the organization.
• Lead team in software development best practices including Peer Code Review, Unit testing, Automated Deployments, and Automated Testing.
• Write technical documentation

About us:

 We are not just an AD agency or a creative agency, we are a Communication Company. Founded in 2014, Moshi Moshi is a young, creative, gutsy and a committed communication company that wants its clients to always Expect the EXTRA from it.

Our primary clientele consists of Startups & Corporates like Ola, Zoomcar, Mercedes Benz, ITC, Aditya Birla Group, Colive, MTV, Toit, IHCL, Jaquar, Sobha, Simple Energy, and Godrej amongst others. We have a huge team of creative folks, marketers, learners, developers, coders and a puppy momo, who believe Moshi Moshi is an experience rather than a company.

Why Moshi Moshi? 

The learning curve at Moshi Moshi is very high when compared to the industry average and that's primarily because you get to work with Companies / Brand managers / Marketers of different sizes and thought processes who push you to think better and faster. So, Hop on to the ride we dearly call Moshi Moshi and let's Say hello to the world.

PS:- We are also very close to a lot of food joints and breweries, so in case your manager/boss gives you a lot of work or is Expecting the Extra, you can quickly grab a recharge and continue with your everyday life struggles. We can't do much about the manager!

What .............................. Are you a FULL STACK developer?

Yeah man I am Have you developed FULL STACK websites? Yeah I have done a few of these Oooo Mannnnn these are very poor Let me tell you one thing we are going to create the best website of your life together like these:- https://www.unisoindia.com/ https://www.florestagoa.in/ https://www.myhealthymunch.com/ https://www.moshimoshi.in/ 

Are you up for it? I am sure you are. We will take care of the design and you take care of the dev Here is JAY Calling out for His VIRU. Sachin calling out for his Sehwag. Ranveer calling for out his Deepika. Moshi Moshi & (Lucky you) Ps:- You can be the lucky one(Real JD is mentioned below)

A FULL STACK Developer is responsible for the coding, design, and layout of a website according to a company's specifications. As the role takes into consideration user experience and function, a certain level of both graphic design and computer programming is necessary. Handling the development of the website. Handling the tech side of the business and coordinating with the client. Team Management. Website Development.

Languages - React.JS, Redux, MySQL, Java Script, Microservices, Node.JS, MySQL, Mongo DB AWS server-side.

1. Developing and maintaining web applications: coding, testing, and debugging both client-side (front-end) and server-side (back-end) components of web applications. This includes working with languages like HTML, CSS, JavaScript for the front-end, and server-side languages like Node.js, MySQL, MongoDB, or PostgreSQL.

2. Collaborating with cross-functional teams: The candidate need to collaborate with other team members, such as UI/UX designers, product/operations managers, and other developers, to understand requirements and implement solutions.

3. Learning and applying new technologies: Given the rapid pace of technological advancement in web development, candidates are often expected to learn and adapt to new frameworks, libraries, and best practices. They might spend time researching and experimenting with new tools or technologies and applying them to current projects. This continuous learning is crucial for personal development and for staying relevant in the field.

• Convert shared custom designs into Shopify websites
• Expert-level knowledge of Shopify Liquid templating language to edit the website
• Add new sections, filters, products, etc.
• Integrating third-party and platform-supported apps into the websites
• Analyze the requirements and provide solutions
• Work on issue debugging and troubleshooting
• Use Shopify liquid, jQuery, CSS, and HTML to deliver interfaces as required
• Use Shopify JS APIs (storefront, AJAX Cart, Sections, etc.) to deliver the required functionality

• A Bachelor's degree in Computer Science or equivalent.
• Strong knowledge of the Shopify platform
• Knowledge of SEO optimization
• 2+ years of development experience

• Design and construction of platform with the best possible encryption and security mechanisms
• Compare different design options and take technology-driven design decision
• Define Data model/Information model
• Define services and convert functional requirements to design
• Define APIs and implement them
• Build front end based on user experience design
• Test and Debug as required
• Write Technical Documentation
• Optimize code and design for Performance
• Design and implementation of continuous integration and deployment pipelines

Expected Qualifications and Key Skills

• Working experience in Spring, Spring-boot or equivalent, Hibernate or equivalent persistence framework.
• Working experience of No SQL databases such as MongoDB or equivalent
• Working experience of setting up Production environment including SSL certificates, logging, backup, archival, etc.
• Working experience of JavaScript frameworks such as React JS, JQuery, etc.
• Working experience of API gateways and Web services such as REST
• Working experience of using GIT
• Working experience of a dev-ops tool such as Jenkins
• Deployment experience on Azure/AWS
• Microservices design and development
• Excellent understanding of Data Structures and Algorithms
• Understanding of OOP and Design Patterns
• Works well in a team setting
• Can multitask, adapt to shifting priorities, detail-oriented
• Good work ethic, including a sense of individual responsibility
• Comfortable working on changing requirements in a growing company
• Must be analytical, flexible, innovative, and self-motivated
• Experience with payment platforms and processors would be a plus

JOB Description :

We are looking for a candidate who is dedicated and ready to take responsibility for work and interested to do work from home in this COVID duration(Freelancer full-time job).

 

2+ Years of experience in Microsoft .NET Technologies.

Strong knowledge of Database Design concepts.

Strong knowledge of Object-Oriented Programming concepts.

Knowledge of Design Patterns, and SOLID principles.

Must have experience with:

ASP.Net MVC, SQL, Entity Framework, LINQ, JQuery, WEB APIs, Dependency Injection, WCF services (Nice to have).

Must have experience with:

Database Design - Relations, Cardinality, Constraints, Indexes.

Database Data Manipulation - Select, Joins, Group By, Aggregate Functions, Subquery, Stored Procedures, Functions.

SSRS reports (Nice To have).

Writing Quality Code - Naming Conventions, Exception Handling, Logging, Reusability, OOP Concepts, SOLID principles.

Good to have knowledge of - HTML, CSS, Javascript/ jQuery/ KnockoutJS, AJAX.

Understanding of Agile methodology.

Highly developed analytical and problem-solving skills.

Excellent troubleshooting and communication skills.

About the Company:

Kratin LLC. is a leading innovation and design company focusing on healthcare. Kratin’s Unified Health Experience (UHX) platform is an award-winning solution for connecting dot across the care continuum with mobile and high tech solutions.