- 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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Required Skills:
- Strong proficiency in Python
- Experience with Django, Flask, or FastAPI
- Solid understanding of REST APIs and backend architecture
- Hands-on experience integrating LLM APIs (e.g., OpenAI, Anthropic) into applications
- Familiarity with AI/LLM frameworks such as LangChain or LlamaIndex
- Understanding of Retrieval-Augmented Generation (RAG), embeddings, and semantic search concepts
- Experience or exposure to vector databases like Pinecone, Weaviate, or FAISS
- Experience with databases (MySQL, PostgreSQL, MongoDB)
- Familiarity with Git and version control workflows
- Understanding of asynchronous programming and performance optimization
- Basic knowledge of cloud platforms (AWS, GCP, or Azure)
- Strong problem-solving and analytical skills
Our Tech Stack :
- PHP, Code igniter, MVC Framework
- Node JS, React JS, JavaScript, HTML, CSS
- Ajax, JQuery - Redis, SQL/Maria DB
- Linux
Few Challenges we are working on right now:
- Working on various optimization to improve page speed.
- Improving Server Response & Load balancing.
- Server side development on various projects.
- Customized CRM to increase leads handled per salesperson to double a day.
- Create a platform for users to create
Job Objectives:
- Integration of user
- facing elements developed by front
- end developers with server
- side logic
- Optimize web applications to maximize speed and scale. Support diverse clients from high
- powered desktop computers to small mobile devices
- Optimization of the application for maximum speed and scalability
- Implementation of security and data protection
- Collaborate with senior management, operations & business team
- Building Rest APIs and maintain Database optimizations
Looking For:
- Great understanding of Node, react, Express, Socket.io, MVVM framework
- Worked on e- commerce website, server handling and deployments scripts
- The one who has worked on customer facing product for 2 years
- Strong knowledge of MEAN stack ( Min 1 yr professional working experience) with basic understanding of LAMP
- Experience designing scalable, fault tolerant systems and databases.
Hands-on experience with RESTful services, API design are must.
Knowledge of microservices architecture is must.
Knowledge of design patterns is a must.
Strong knowledge of Exception handling and logging mechanism is a must.
Agile scrum participation experience. Work experience with several agile teams on an application built
with microservices and event-based architectures to be deployed on hybrid (on-prem/cloud)
environments.
Good knowledge of Spring framework (MVC, Cloud, Data and Security. Etc) and ORM frameworks like JPA/Hibernate.
Experience in managing the Source Code Base through Version Control tools like SVN, GitHub,
Bitbucket, etc.
Experience in using and configuration of Continuous Integration tools Jenkins, Travis, GitLab, etc.
Experience in the design and development of SaaS/PaaS-based architecture and tenancy models.
Experience in SaaS/PaaS-based application development used by a high volume of
subscribers/customers.
Awareness and understanding of data security and privacy.
Experience in performing Java Code Reviews using review tools like SonarQube, etc.
Good understanding of end-to-end software development lifecycle. Ability to read and understand
requirements and design documents.
Good Analytical skills and should be self-driven.
Good communication with interpersonal skills.
Open to learning new technologies and domains.
A good team player and ready to take up new challenges. Active communication and coordination with
Clients and Internal stakeholders
Requirements: Skills and Qualifications
6-8 years of experience in developing Java/J2EE-based Enterprise Web Applications
Languages: Java, J2EE, and Python
Databases: MySQL, Oracle, SQL Server, PostgreSQL, Redshift, MongoDB
DB Script: SQL and PL/SQL
Frameworks: Spring, Spring Boot, Jersey, Hibernate and JPA
OS: Windows, Linux/Unix.
Cloud Services: AWS and Azure
Version Controls/ DevOps tools: Git, Bitbucket and Jenkins.
Message brokers: RabbitMQ, and Kafka
Deployment Servers: Tomcat, Docker, and Kubernetes
Build Tools: Gradle/Maven
Description:
We are looking for a highly capable NodeJS developer to optimize our web-based application performance. You will be collaborating with our front-end developers, designing back-end components, and integrating data storage and protection solutions.
Roles and Responsibilities:
- User authentication and authorization between multiple systems, servers, and environments.
- Extensive web services development with RESTful interfaces
- Integration of data storage solutions, Solution for MongoDB, API Integration
- Responsible for the development and maintenance of applications target for the range of any kind of web application API development and Solidity experience is better if candidate has knowledge.
- Primary focus will be development of React based web applications and their integration with back-end API services.
- Independent practitioner and advanced programmer and will be working alongside cross platform engineers and testers on different layers of the infrastructure.
- Commitment to collaborative problem solving, sophisticated design, and the creation of quality products is essential.
- Ensure the performance, quality, and responsiveness of applications.
- Collaborate with a team to define, design, and ship new features.
- Identify and correct bottlenecks and bug fix.
- Help maintain code quality, organization, and automatization.
- Engagement in client communication, requirement collection, analysis, and documentation activities, in case if it would require.
- Design and Implement Architecture solutions
- Contribute in all phases of the development lifecycle
- Able to make sure that the platforms keep up with high standards of scalability, stability, security, and performance.
- Convey effectively all task progress, evaluations, suggestions, schedules along with technical and process issues.
- Troubleshooting bug reports and help to establish ambitious goals to improve our codebase in general
Requirements:
- Minimum 2 years of experience in Node JS
- Should have worked on at least one Node JS framework
- Must have worked on Agile development methodologies.
- Strong understanding of front-end technologies
- In-depth knowledge of Node.js, Express.js, MongoDB, Postman, REST API
- Excellent communication skills both verbal and written (English)
- Implementing automated testing platforms and unit tests
- Proficient understanding of code versioning tools
How we work:
- We use Microsoft Teams for daily communication, conduct daily standups and team meetings over Teams.
- We value open discussion, ownership, and a founder mindset.
- We prioritize design, amazing UI/UX, documentation, to-do lists, and data-based decision-making.
- We encourage team bonding through bi-weekly town halls, destressing sessions with a certified healer, and fun company retreats twice a year.
- We offer a 100% remote workplace model, health insurance, top performers eligible for attractive equity options, mental health consultations, company-sponsored upskilling courses, growth hours, the chance to give back with 40 hours for community causes, and access to a financial advisor.
- Wobot is an Equal Opportunity Employer
Company: Mart2global
Experience: 2 + years
Must be Knowledge in API,Soket IO,
Work in E-commerce Platform & Payment Gateway
Location: Ahmedabad
Recommendations are mostly appreciated.
Salary -30k to 90k
- Bachelor's or Master’s degree in Computer Science or equivalent area
- 10 to 20 years of experience in software development
- Hands-on experience designing and building B2B or B2C products
- 3+ years architecting SaaS/Web based customer facing products, leading engineering teams as software/technical architect
- Experiences of engineering practices such as code refactoring, microservices, design and enterprise integration patterns, test and design-driven development, continuous integration, building highly scalable applications, application and infrastructure security
- Strong cloud infrastructure experience with AWS and/or Azure
- Experience building event driven systems and working with message queues/topics
- Broad working experience across multiple programming languages and frameworks with in-depth experience in one or more of the following: .Net, Java, Scala or Go-lang
- Hands-on experience with relational databases like SQL Server, PostgreSQL and document stores like Elasticsearch or MongoDB
- Hands-on experience with Big Data processing technologies like Hadoop/Spark is a plus
- Hands-on experience with container technologies like Docker, Kubernetes
- Knowledge of Agile software development process
About us:-
Zupee is India's hottest Real Money Gaming Platform
With in 1 yr of start, we just had an initial team of around 30 people, these 30 were successful to bring 10 Million+ users and an overall consumer spend of 1.5 Billion USD on the platform, the journey which needed years to be covered was covered with in 1yr. As we speak today, Zupee has been profitable for almost an year now and has ended the year 2020 with a team size of 70+ and over all growth rate was mapped around 20X.
Our user base has significantly gone up and we have invested highly in technology and have got best in class tech stack, it's time to add the backend developers who can help us scale up the platform so that we can drive profitable growth and become the market leader in our space.
Backend Developer :- (3 - 12 yrs)
What You'll Need?
- Knowledge of languages (JavaScript, Python) and frameworks/systems (nodejs)
- Strong analytical skills and aptitude
- Understanding of data architecture, software design and best coding practices
- Understanding of TCP/IP networking concepts and technologies
- Ability to learn new languages and technologies
- Experience with databases (both SQL and NoSQL)
- Familiarity with Agile development methodologies
- Working knowledge of Linux
Out of many tools and technologies, we use Java, MongoDb, Cassandra, Redis, Twem, Netty extensively for our back-end development.
- Leading the entire Backend platform for a product portfolio.
- End to end delivery new features.
- Evolving the architecture for performance and scalability.
- Design, develop and own components of a highly scalable, distributed web services platform.
- Constantly strive to improve software development process and team productivity.
- Mentor and train team members
- Lead module development independently
Required background, Knowledge, Skills and Abilities
- 5.5+/ 7+ Years of experience in a scalable product/ecommerce organization·
- Excellent Java skills, Understanding of Spring framework & MVC approach
- Strong knowledge of Performance optimization and caching techniques.
- Strong Object Oriented Programming concepts, data structure and algorithms
- Experience in developing scalable, fault-tolerant, distributed backend services
- Experience with prevalent design patterns and advanced system designing
- Good experiences with databases and Schema design. We heavily use NoSQL databases
- Strong Problem Solving skills
As a senior software engineer, you will contribute to our end-to-end supply chain platform. You'll work with all key stakeholders to deliver scalable, maintainable backend code and work with frontend developers to deliver amazing user experiences. We are building a design and process-centric culture where you'll play a key role in the implementation of the foundation of all our systems. Up for a challenge?
You are:
- A self-starter with a sense of what it takes to be successful as a team
- An agile - welcome change, do as little as possible and embrace continuous delivery
- Conscious about how quality is carried through from the UI to all layers underneath
- Opinionated, but flexible to accommodate the big picture
Responsibilities
- Analyze requirements, provide estimates and deliver code in an agile setup
- Stay on top of all owned work and raise red flags as early as possible
- Define the architecture, best practices, and coding standards
- Support continuous technical improvement by investigating alternatives and technologies and present them for architectural review
- Motivate team members, coach junior members, and extend goodwill to other employees








