- Highly proficient in JavaScript and Typescript, PassportJs, Sequelize.
- Working knowledge of Node.js frameworks such as ExpressJs, SailsJs, VueJs and ElectronJs.
- Good understanding of server-side templating languages such as Jade, EJS, Mustache etc.
- Good understanding of server-side CSS preprocessors such as Stylus, Less,Sass etc.
- Basic understanding of front-end technologies, such as HTML5, and CSS3
- Sound knowledge of Testing frameworks such as Mocha, Chai, Jasmine, Cucumber etc.
- Experience of writing unit, integration and E2E tests.
- Experience of working with SQL databases.
- Experience of integrating third party APIs.
- Good understanding of code versioning tools, such as Git.
- Good Communication Skills.

About Jellyfish Technologies Pvt Ltd
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1) Be open to learn new frameworks like Hapi.JS , Typescript , Nest.JS
2) Strong DB concepts , and hands on knowledge on MongoDB , REDIS
3) Experience working with micro-services will be a plus
4) Experience working with JWT and IAM systems will be a plus
5) Experience working with Postman , Swagger will be a plus
6) TDD knowledge is an advantage and also working with Unit Test code and familiar with test code coverage concepts.
7) Strong operating system knowledge is a plus with knowledge of how to manage threads.
8) Working experience with RabbitMQ , Kafka will be a plus
9) Strong knowledge of JS internals is a must.
WHAT YOU'LL WORK ON
- Build and scale backend services using Node.js & Express
- Architect and optimize MongoDB schemas for performance
- Contribute to frontend features with Next.js & React
- Debug production issues, optimize API latency & CI/CD pipelines
- Integrate MathJax (LaTeX rendering) & VdoCipher (secure video)
WHAT WE'RE LOOKING FOR
- Strong DSA fundamentals — logical thinking over competitive coding
- Deep JavaScript/TypeScript knowledge: Closures, Promises, Event Loop
- 1–2 original projects (no To-Do apps or tutorial clones)
- Ability to independently pick up Docker, Redis, or AWS
- Ownership mindset — ensure it works in production, not just locally
BONUS POINTS
- Docker / containerization basics
- Real-world AWS experimentation (EC2, S3, Lambda)
- Active GitHub profile: open-source contributions or unique projects
AI Usage Policy:
We encourage AI tools (Cursor, Copilot, GPT-4) as force multipliers — but you must own your code, explain rade-offs, and debug without solely relying on AI.
HOW TO APPLY
- Share your GitHub profile link
- Include live demo links to your best, most original projects
We value what you've built far more than what's on your resume.
Key Skills and Requirements
· Minimum 3+ years of hands-on experience in Node.js and Express.js
· Bachelor Degree in Computer Science OR in related field B.sc - IT/ BCA /MCA/B.Tech/M.Tech
· Programming experience in Web Application development with Node.js and Express.js
· Must have experience in JavaScript, Node.js, Express.js or have extensive exposure in any MVC framework
· Expert in MySQL and Store Procedures
· Knowledge of REST API / Web API protocol
· Understanding HTML, CSS, JavaScript, JQuery, Ajax, JSON, OOPs well enough
· Good to have: React Js.
· Strong coding skills, good analytical and problem-solving skills
· Ability to write clear, concise, well-structured, and well-organized code
· Experience with third-party libraries and APIs(Zoho, Leadsquared, Knowlarity, Exotel, LCode, Karza, Google API, DIGIO, etc)
· Ability to identify weaknesses in existing code and improve it
Plus but not required
· A plus if you have Slide experience with Git Command lines.
· A plus if you have any experience with Github, Gitlab, Bitbucket.
· A plus if you have any experience with UI Design
· A plus if you have any experience with PHP, CodeIgniter
· A plus if you have any experience with React JS/Angular JS
Essential Duties and Responsibilities
· Collaborate with cross-functional teams to define, design, and ship new features
· Work with outside data sources and APIs
· Unit-test code for robustness, including edge cases, usability, and general reliability Work on bug fixing and improving application performance
· Continuously discover, evaluate, and implement new technologies to maximize development efficiency
Job Title: Node.js Developer
Company Overview:
Join Code B, a leading software development company specializing in tailored solutions for businesses worldwide. We're seeking a skilled Node.js Developer to join our dynamic team and contribute to the development of innovative software solutions.
Position Overview:
As a Node.js Developer at Code B, you will be responsible for designing, developing, and maintaining server-side applications using Node.js. You will collaborate with cross-functional teams to deliver high-quality software solutions that meet client requirements.
Responsibilities:
- Designing and implementing scalable and efficient server-side applications using Node.js
- Developing RESTful APIs to support front-end applications
- Collaborating with front-end developers to integrate user-facing elements with server-side logic
- Writing reusable, testable, and efficient code
- Troubleshooting and debugging issues to ensure smooth application performance
- Staying updated on emerging technologies and best practices in Node.js development
Requirements:
- Proficiency in Node.js and JavaScript
- Strong understanding of asynchronous programming and event-driven architecture
- Experience with Express.js or other Node.js frameworks
- Knowledge of MongoDB or other NoSQL databases
- Familiarity with version control systems such as Git
- Excellent problem-solving and communication skills
- Bachelor's degree in Computer Science, Engineering, or a related field (preferred)
- Prior experience in Agile/Scrum development methodologies (preferred)
Benefits:
- Competitive salary based on experience and skills
- Opportunity to work on challenging and innovative projects
- Collaborative and supportive work environment
- Professional development opportunities and training programs
- Health insurance, retirement plans, and other benefits package
Join Code B and be part of a team that is passionate about delivering excellence in software development. Apply now and take your career to the next level!
Overview of the role
As a Node Developer you will be collaborate with cross-functional teams to define, design and build performant modern web applications and services. Build high-quality web applications and services by writing clean and modular code.
Must have skills
- Overall 3-5 Years of experience in writing unit and integration tests to ensure the robustness and reliability of web applications and services.
- Measure and improve the performance of microservices. Catalyse growth within the team through code reviews and pair programming to maintain high development standards
- Investigate operational issues to find the root cause and propose improvements Design, build, and maintain APIs, services, and systems across Stripe’s engineering teams.
- Expert level of experience in the design and development of Web Applications, and highly scalable distributed systems.
- Should have experience in development skills using the latest technologies including NodeJS(fastify framework), Microservices, PostgreSQL, Redis, etc. Should have exposure to NoSQL and SQL development.
- Comprehensive knowledge of physical and logical data modeling, and performance tuning.
- Should possess excellent communication, presentation, and interpersonal skills.
- Ability to work collaboratively and productively with globally dispersed teams.
- Build high-performance teams and Coach teams for successful career growth.
- Experience working with relational and non-relational databases, query optimization, and designing schema
Desired Background
Bachelors/Masters Degree in Computer Science, Information Technology
Responsibilities-
- Participate in the entire application lifecycle, focusing on coding and debugging
- Write clean code to develop functional web applications
- Troubleshoot and debug applications
- Collaborate with Front-end developers to integrate user-facing elements with server-side logic
- Gather and address technical and design requirements
- Provide training and support to internal teams
- Build reusable code and libraries for future use
- Liaise with developers, designers to identify new features
- Follow emerging technologies
Requirements-
- Spent at least 3 yrs in a solid back end role
- Experience taking a problem to a product solution (module/product)
- Prior experience working with startups and understand the fast-paced, dynamic nature of work
- Javascript, NodeJS
- Client-server architecture
- OOP concepts, including design patterns
- Understanding of RDBMS (MySQL, Postgresql)
- Understanding of REST API
- Familiarity with frameworks such as ExpressJs
- Knowledge of TDD frameworks mocha, chai, jest, etc
- Knowledge of AWS (Lambda, RDS, EC2, SQS, S3, ECS, etc)
- Basic knowledge of Typescript, NextJs
- Prior experience in fin-tech
· Understanding the fully asynchronous behaviour of NodeJs
· Knowledge of the common NodeJs or web server exploits and their solutions, accessibility, and security compliance's.
· Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3
· Excellent working knowledge of databases, database schema that represent and support business processes
Mandatory:
Skill sets: Node JS, JavaScript, Mongo DB
Deployment experience on Production Server.
Location: Bangalore








