MERN Stack Developer

About koolio.ai

Website: www.koolio.ai

Koolio Inc. is a cutting-edge Silicon Valley startup dedicated to transforming how stories are told through audio. Our mission is to democratize audio content creation by empowering individuals and businesses to effortlessly produce high-quality, professional-grade content. Leveraging AI and intuitive web-based tools, koolio.ai enables creators to craft, edit, and distribute audio content—from storytelling to educational materials, brand marketing, and beyond. We are passionate about helping people and organizations share their voices, fostering creativity, collaboration, and engaging storytelling for a wide range of use cases.

About the Internship Position

We are looking for a motivated full-time Software Development Intern to join our innovative team. As an intern at koolio.ai, you’ll have the opportunity to work on a next-gen AI-powered platform and gain hands-on experience developing and optimizing backend systems that power our platform. This internship is ideal for students or recent graduates who are passionate about backend technologies and eager to learn in a dynamic, fast-paced startup environment.

Key Responsibilities:

• Assist in the development and maintenance of backend systems and APIs.
• Write reusable, testable, and efficient code to support scalable web applications.
• Work with cloud services and server-side technologies to manage data and optimize performance.
• Collaborate with cross-functional teams to integrate frontend features with backend logic.
• Collaborate with the product and design teams to develop and implement user-friendly web interfaces
• Ensure responsive design and optimize web pages for performance and scalability across devices
• Debug and resolve issues, improving the overall user experience on the platform and ensuring reliability
• Assist in integrating APIs and frontend services with the backend
• Stay up-to-date with the latest trends and suggest improvements to enhance the platform’s functionality

Requirements and Skills:

• Education: Currently pursuing or recently completed a degree in Computer Science, Engineering, or a related field.
• Technical Skills:
• Good understanding of server-side technologies like Python
• Familiarity with REST APIs and database systems (e.g., MySQL, PostgreSQL, or NoSQL databases).
• Exposure to cloud platforms like AWS, Google Cloud, or Azure is a plus.
• Knowledge of version control systems such as Git.
• Strong proficiency in JavaScript frameworks like ReactJS or Redux
• Proficiency in frontend languages such as HTML, CSS, and JavaScript (ES6+)
• Soft Skills:
• Eagerness to learn and adapt in a fast-paced environment.
• Strong problem-solving and critical-thinking skills.
• Effective communication and teamwork capabilities.
• Other Skills: Familiarity with CI/CD pipelines and basic knowledge of containerization (e.g., Docker) is a bonus.

Why Join Us?

• Gain real-world experience working on a cutting-edge platform.
• Work alongside a talented and passionate team committed to innovation.
• Receive mentorship and guidance from industry experts.
• Opportunity to transition to a full-time role based on performance and company needs.

This internship is an excellent opportunity to kickstart your career in software development, build critical skills, and contribute to a product that has a real-world impact.

We are inviting a Fullstack Engineer to join our dynamic product team at BrandLabs. If you’re passionate about building end-to-end web applications and enjoy working across the stack, we’d love to connect!

Key Responsibilities:

• Develop, deploy, and maintain web applications using NextJS, Typescript, NodeJS, NestJS, and ExpressJS.
• Collaborate with the product, design, and backend teams to deliver seamless user experiences.
• Write clean, maintainable, and scalable code following industry best practices.
• Participate in technical discussions, code reviews, and architectural planning.
• Integrate third-party services, APIs, and tools where required.
• Ensure application performance, security, and responsiveness.

Required Skills:

• 1-2 years of hands-on experience in fullstack development.
• Strong proficiency in NextJS, Typescript, NodeJS, NestJS, and ExpressJS.
• Good understanding of RESTful APIs and microservice architecture.
• Ability to troubleshoot, debug, and optimize applications for performance.

Good to Have:

• Experience building n8n workflows for automation.
• Exposure to AI/ML-based projects or AI service integrations.
• Familiarity with DevOps, CI/CD pipelines, and cloud platforms.

Additional Information:

• Location: We prefer candidates based in or around Thane, Mumbai for better collaboration.

Project Links: Please share your GitHub, portfolio, or links to live projects you’ve contributed to.

Job Title: Senior Full Stack Developer

Employment Type: Full-time

Years of Experience: 4-7 years

Number of Positions: 3

Education: B. Tech, B.E, MSc-IT, MCA degree or equivalent

Work Location: Hyderabad

Mode of Work: Work From Office

Notice Period: Immediate (within 15 days)

On-site Feasibility: Yes

Interview Rounds:

- L1 - HRBP (Virtual Screening)

- L2 - Tech Lead (Virtual)

- L3 - Sr Tech Lead/CEO (Virtual)

- L4 - Managerial Round (CTO) (Virtual)

Interview Panel Availability: Preferably Weekends or after 6 pm weekdays

Working Hours: 11:30 am to 8:30 pm (Monday - Friday)

Hiring for: Product/Client

Role Reporting to: Tech Lead

Required Skills:

- 4+ years of development experience in .NET.

- Proficiency in JavaScript or TypeScript.

- Proficiency in C#, .NET, .NET Core, Entity Framework.

- Solid understanding of software development principles (SOLID).

- Expert in Azure/AWS.

- Understanding of Design Patterns.

- Excellent communication skills.

Good to Have:

- Knowledge of SQL databases.

- Certification in Azure/AWS.

- Strong knowledge of Vue.js.

- 2+ years of development experience in Vue.js or Angular (Version 10 and above) framework.

Roles & Responsibilities:

- Develop new applications including Web APIs, Webjobs, Functions, etc.

- Develop front-end applications using Micro Frontend Architecture.

- Write Unit Tests and Integration Tests to ensure software quality.

- Troubleshoot and debug applications.

- Mentor and train other team members.

- Maintain application performance by identifying and resolving production and development issues, installing updates and patches, and conducting maintenance tasks.

- Provide support for applications by developing utilities, addressing inquiries, and resolving issues.

- Stay updated with the latest technologies and trends by participating in educational opportunities and obtaining relevant certifications.

- Contribute to the achievement of organizational goals by completing assigned tasks and projects effectively.

Employee Benefits:

- Health Insurance (covering spouse and 2 children)

- Provident Fund (PF)

•  Strong analytical and problem-solving skills
•  Ability to work independently, learn quickly and be proactive
•  10-14 years of hands-on experience working on Web Full Stack technologies, with at least 4-6 years of experience developing applications with/on React/NextJS, NoSQL, REST APIs
•  Proficiency in JavaScript/TypeDcript (ES6), NodeJS, HTML5, CSS3, CSS Preprocessors, Webpack, Gulp
•  Client-side scripting and JavaScript frameworks – jQUery, ReactJS, Redux, Babel, JSX
•  Experience in designing high-performance REST APIs and associated data structures
•  Familiarity with developing microservices using containerization technologies such as docker, Kubernetes, etc.
•  Working knowledge of git and using branches for development

Key Qualifications

1) BS/MS in Computer Science or relevant field and 6+ years of experience in building backend services with

Python 3.7.x using Django >= 2.2.1, Django REST framework >= 3.13.1, Flask >=1.1.2 and relational databases

design and maintenance.

2) At least 4 years of solid experience in working with front-end MVC framework React and caching strategies

(memcached, Redis).

3) Expertise in building microservices-based and cloud-based architectures including development and deployment

in AWS.

4) At least 3 years of experience with Web Application technologies: REST, MongoDB, MySQL, NoSQL, AWS

Lambda, API Gateway and web servers Apache, Nginx.

5) Follows coding best practices to produce tested, scalable, reliable and maintainable code.

6) Hands-on experience in developing, deploying, and releasing large-scale applications.

Responsibilities

1) Understand complex requirements, scope and architect major features and perform API technical design for

junior developers to enhance the product at all layers.

2) Think in terms of future possibility of features, backward compatibility, and application performance.

3) Build cloud-based Python Django software products and implement UI components in React.js framework.

4) Write quality code (with comments, unit tests & documentation), design, implement and manage data pipelines

at enterprise scale with data migration and production data maintenance.

5) Collaborate with different teams to conceptualize, design, and build highly scalable and reliable software

solutions with REST APIs following SDLC best practices and DevOps principles.

6) Work closely with product, project and business teams to translate user feedback and company vision into

technical roadmap.

7) Possess strong product-centric mindset. You should be interested in the way software products are built and

comfortable to be proactive with your ideas and opinions.

 Must Have: BE/BTech/ME/MTech in Computer Science or Information Technology

Our Stack

Back-end: Python, Django REST, MySQL, Celery, Rabbitmq, Sqlalchemy, RDS

Front-end: JavaScript, React, HTML, CSS, Bootstrap

Ops: Docker, AWS, RDS, Terraform, Github Actions, AWS Route53, AWS cloudwatch

We are looking for Fullstack Engineers (MERN) to help us in the next stage of our journey with experience in developing real-time server applications based on Node.js, Express.js, MongoDB databases

• Write, execute and maintain clean, reusable, and scalable code
• Integrate our various data storage solutions
• Should be comfortable around both front-end and back-end coding languages, development frameworks, and third-party libraries
• Ensure the responsiveness and boost the performance of our apps
• Find and address the various bottlenecks and bug-fixes
• Help in code automatization

• Proven experience in high-level programming languages like Node.js and Express.js with state management tools like Redux
• Good understanding of React, Next.JS, Bootstrap, and Material UI
• Thorough understanding of modeling and scaling databases like Firebase, and SQL
• Expertise in developing micro-services based REST APIs and exposure to API Gateway
• Should be well-versed with collaboration tools like Git, JIRA, etc
• Comfortable working within GCP, AWS, Azure, or equivalent ecosystem
• Knowledge on open-source technologies such as NoSQL, MongoDB, Data Formats (XML / JSON), JavaScript Frameworks ReactJS, JS, JQuery, CSS, HTML5, in-memory databases, Build tools like webpack.

• 2+ years of prior experience working in a software engineering environment
• B. E in Computer Science/Information Science or equivalent degree

We need multiple MEAN stack developers. As a full stack developer, you will be producing scalable software solutions and will be involved in the full software development life cycle, from conception to deployment. You should be comfortable around both front-end and back-end coding languages, development frameworks and third-party libraries. This isn't just another CRUD application. Your challenge will be to deliver a highly-available service on top of a dynamic collection of third-party data sources . Explore the limits of your own resourcefulness by designing human and automated systems that deliver true reliability in an otherwise unpredictable environment.

Tech-Stack: Angular, Node.js, JavaScript, and MongoDB

How You Will Contribute

• Work with the development team to ideate software solutions
• Working through the application development lifecycle to launch
• Conceptualizing, creating and building applications alongside taking designer wireframes and magically turning them into effective code
• Designing user-based interactions through effective front-end architecture
• Develop and manage well-functioning databases and back end applications
• Write effective and scalable APIs
• Leading and developing best practices for Full Stack Developer team
• Developing and designing RESTful services and APIs
• Determining application responsiveness for consumers
• Ensuring company mandate is effectively addressed in technical and developmental aspects
• Create security and data protection settings
• Write technical documentation
• Keeping current with industry trends and developments that can be applied to company needs

Technical Expertise That We Believe Will Make You Successful In This Role

• Min 1 year of experience as a MEAN Stack Developer
• Fluency in CSS, JavaScript and HTML
• Understanding of CSS preprocessors including Sass
• Strong knowledge of building effective APIs in Node.js (Express)
• Proficiency in writing effective Angular components.
• Experience working with MongoDB, Redis and AWS
• Good knowledge of data structures, system design and algorithms
• Bachelor/Master degree in Computer Science
• Soft-Skills That Will Come Handy
• Having a knack for visual design and utility
• Excellent written and verbal communication skills
• Strong attention to detail
• Head for problem-solving
• Having a flexible working style
• Being a team player
• Comfortable with working unsupervised

What We Need

- Solid industry experience

- Hands-on Experience with MEAN((MongoDB, Express.js, AngularJS, and Node.js) full-stack

- Experience in creating front end applications using HTML5, Angular 6x+, LESS/SASS, Bootstrap/Angular Material

- Having decent knowledge in Typescript

- Having experience in building a responsive web design

- Experience with MongoDB and good knowledge in database concepts

- Experience with web frameworks like ExpressJS

- Developing secure Node.js endpoints using Passport, JWT, OAuth, and related technologies.

- Knowledge in Restful API Design

- Experience with Version control systems like GIT and knowledge in GIT branching is necessary.

- Strong object-oriented knowledge in any platform is a plus

Good to Have

- Open Source Contributors (esp. JavaScript to be evident from GitHub)

- Notice period to be less than 30 days

Job Description

The ideal candidate is a self-motivated, multi-tasker, and demonstrated team-player. You will be a responsible developer helping our clients, either developing new products or enhancing products. You should be able to contemplate and communicate as much as possible!

Responsibilities

• Writing clean, maintainable, desired quality, desired performing code.
• Develop and support software including applications, database integration, interfaces, and new functionality enhancements
• Coordinate cross-functionally to ensure project meets business objectives and compliance standards
• Support test and deployment of new products and features
• Participate in feature brainstorm, code reviews
• Explore cutting edge technologies and taking up PoC line up.

Qualifications

• Team player
• Passion to solve problems
• Constant learner
• A degree in Computer Science (or related field)
• 4-7 years of relevant work experience
• Able to code in JAVA (with Spring framework)
• Ability to organize, and prioritize work
• Good at Object Oriented Design, Database Design(SQL/NoSQL), and Microservices
• Exposure to UI framework (React/Angular/Vue/Next)
• Exposure with Agile software development methodologies
• Exposure to any one public cloud (AWS/GCP/Azure)
• Exposure to cache, messaging systems, docker, API gateway

What we will not ask from you?

• Your current CTC, you'll be paid for what you deserve!
• If you had breaks in your career that's okay! We will not poke you on why you had your break blah blah...!
• Your notice period in current organization! If everything goes well, you let us know your joining date we will roll out the offer with joining the date as you say!

What's onboard for you as an employee?

• Empathy
• Generous package.
• Variable pay as low as possible (max 15% of your CTC)
• Medical Insurance (limited to spouse & kids) is not part of your CTC.
• Tax beneficial salary structure.
• Comprehensive leave policy
• Flexible Remote working
• Weekly Social Hour on working days
• Open-source Hour on working days
• Flat organization structure
• 15 days notice period (we wanted to keep it as same day exit! we would love to have you with us as long as possible.)

Next steps:

• Feel free to apply for this job if you like this JD.

Overview

Xcelpros is a Global company, headquartered in Chicago (US) with multiple locations in US and Bengaluru, India. Our focus is Tech Innovation, Product Development and Technology Consulting.

We are hiring for our Product Development team and have an immediate need for a Backend Developer / Fullstack MERN Developer. The position calls for someone with a mindset who can build great products, manage multiple projects and related tasks on deadline. We are looking for high-quality and passionate developers that want to be a part of a great product team.

You need to have at least 2 years of demonstrated experience  as a Backend Developer using MERN (NodeJS, MongoDB, PostgreSQL & Express) & GraphQL technologies. The candidate will work closely with our internal teams in the design, development, launch and enhancement of various products.

About XcelPros

XcelPros is a Global company, headquartered in Chicago (US) with multiple locations in US and Bengaluru, India. XcelPros is focused on Tech Innovation, Product Development and Technology Consulting.

XcelPros specializes in technology solutions for Business-to-Business (B2B) and Business-to-Consumer (B2C) areas. We believe technology is the enabler of exponential growth for us and our customers. We are strategists delivering innovative business and technology solutions.  We have been well funded and operational since 2011.

XcelPros and affiliated group of companies are proud to foster a high-performance culture, one that's defined by having the best people, with the skills and determination to deliver above and beyond. We look for insightful and astute professionals who are also forward-thinking, confident, self-motivated and globally minded. Our core team consists of professionals with a wide range of skills and backgrounds.  XcelPros is continuously looking for talented, highly motivated individuals who believe in excellence and are committed to providing superior service to our customers and stakeholders. 

Experience

• Minimum of 2 years of experience in the design and development of  Web and Mobile applications using NodeJS, MongoDB, PostgreSQL, Apollo - GraphQL and React
• You are required to have experience with development in Microservices Architecture 
• Experience with NestJS framework is a major plus
• Hands on experience with GoLang is not mandatory but a major plus

Start Date - Immediate

Positions - 2 (Immediate Need)

Responsibilities

• Minimum of 2 years of hands-on experience building applications in NodeJS, MongoDB, PostgreSQL, Apollo - GraphQL and React
• Strong and mandatory experience of 2 years of experience in building applications using the Microservices architecture in NodeJS
• Strong and mandatory skills in Automating Components, Perceptibility, Configuration Management, Debugging & Consistency while writing Microservices.
• Experience building applications using NestJS or similar frameworks is a major plus 
• Experience building applications and service integrations using Apollo /  GraphQL
• Adhere to best practices of engineering by writing high-quality code.
• Hands on experience in Elastic Search and related technologies
• Hands on experience with one or more testing frameworks such as  Jest
• You are required to write / conduct unit & integration testing to ensure code meets high-quality standards
• Collaborate with multiple stakeholders, including Production Support, BAs, Architect, Project Managers, and Product Owners to deliver high quality solutions.
• Develop, build, configure and unit test solutions from low level designs
• Ensure that solutions meet requirements outlined in the design documentation
• Perform all work to agreed time, cost and quality constraints
• Ensure that developed solutions are peer reviewed and formally documented
• Design, develop, test and document detailed technical specifications for application components built using MERN (MongoDB, ExpressJS, ReactJS, NodeJS) stack and integrations
• Develop and maintain high traffic / high performance React and Node based e-commerce web applications and web services, including support for mobile
• Participate in support activities to help UI developers integrate with APIs / services
• Create and maintain scalable infrastructure leveraging modern AWS cloud platforms
• Knowledge of all development aspects within an Agile SDLC framework, including; estimation, design, development, unit test, code reviews, and documentation
• Develop solutions that satisfy business requirements as outlined in user stories, and within agreed upon timelines
• Ensure solutions are of high-quality with regards to following standards and best practices, as well as satisfying security and performance requirements
• Collaborate effectively with other Agile team members
• Work with the Production Support team in the research and resolution of production issues.
• Prior hands-on experience with architecture for Web and Mobile technologies, E-commerce, Payment Gateways, Data security and encryption is a major plus
• Experience with CICD, containers and container management platforms(Dockers, Docker Swarm/Kubernetes, etc.)
• Knowledge of GOLANG is a major plus
• Good understanding of the Twelve-factor App methodology is a major plus
• Experience defining new architectures and ability to drive project from an architecture standpoint is a major plus
• Experience with Security configuration is a major plus
• Experience in understanding platforms & key AWS services like Elastic Beanstalk, AWS Lambda, ECS, AWS Fargate, EKS, EC2, S3 etc. is a major plus
• Troubleshoot and resolve complex technical issues in cloud integrations
• Highest levels of code quality
• Needs to conduct weekly code reviews
• Ensure timely and quality release of the product in collaboration with other team members
• Must be a self-starter and able to build up presence in the team.
• Perform other related duties as assigned

Technical Expertise / Hands-On Skills:

• MERN (MongoDB, ExpressJS & Node JS)
• PostGreSQL
• Apollo GraphQL
• JEST
• RESTAPIs

Key Deliverables

• Develop very high sense of ownership, the zeal to build scalable applications
• Develop a deep understanding of product development and start-up ecosystem
• Work with a performance oriented team driven by ownership and open to experiments
• Build customer facing technology product for global customers
• Collaborate with development teams to help identify and develop reusable platforms/libraries.

Key Requirements

• Can do attitude
• Highly motivated to bring fresh thoughts to the table
• Highly creative and most importantly willing to exercise it
• Self-starter and self-learner focused on research and learning
• Ability to play a variety of roles and most importantly take accountability
• Ability to communicate openly and embrace various perspectives without judgment
• Believe in a ”No politics” attitude. Politics can be detrimental to yourself and the organization.