
About Kloud9:
Kloud9 exists with the sole purpose of providing cloud expertise to the retail industry. Our team of cloud architects, engineers and developers help retailers launch a successful cloud initiative so you can quickly realise the benefits of cloud technology. Our standardised, proven cloud adoption methodologies reduce the cloud adoption time and effort so you can directly benefit from lower migration costs.
Kloud9 was founded with the vision of bridging the gap between E-commerce and cloud. The E-commerce of any industry is limiting and poses a huge challenge in terms of the finances spent on physical data structures.
At Kloud9, we know migrating to the cloud is the single most significant technology shift your company faces today. We are your trusted advisors in transformation and are determined to build a deep partnership along the way. Our cloud and retail experts will ease your transition to the cloud.
Our sole focus is to provide cloud expertise to retail industry giving our clients the empowerment that will take their business to the next level. Our team of proficient architects, engineers and developers have been designing, building and implementing solutions for retailers for an average of more than 20 years.
We are a cloud vendor that is both platform and technology independent. Our vendor independence not just provides us with a unique perspective into the cloud market but also ensures that we deliver the cloud solutions available that best meet our clients' requirements.
What we are looking for:
● Overall 8+ Years of Experience in Web Application development.
● 3+ Years of Designing Middleware using NodeJS platform.
● 5+ Years of Experience in developing middleware using NodeJS
platform.
● 2+ Years of Experience in using NodeJS along with AWS Server-less
platform.
● Good Experience with Javascript / TypeScript, Event Loops,
ExpressJS, GraphQL, SQL DB (MySQLDB), NoSQL DB(MongoDB)
and YAML templates.
● Experience in developing Java, Angular, Java Full stack
● Good Experience with TDD Driven Development and Automated Unit
Testing.
● Good Experience with exposing and consuming Rest APIs and SOAP
APIs on NodeJS platform and Swagger API contracts.
● Good Experience in building NodeJS middleware performing
Transformations, Routing, Aggregation, Orchestration and
Authentication(JWT/OAUTH).
● Experience supporting and working with cross-functional teams in a
dynamic environment.
● Experience working in Agile Scrum Methodology.
● Very good Problem Solving Skills.
● Very good learner and passion towards technology.
● Excellent verbal and written communication skills in English
● Ability to communicate effectively with team members and business
stakeholders
Secondary Skill Requirements:
● Experience working with any of Loopback, NestJS, Hapi.JS, Sails.JS, Passport.JS
Why Explore a Career at Kloud9:
With job opportunities in prime locations of US, London, Poland and Bengaluru, we help build your career paths in cutting edge technologies of AI, Machine Learning and Data Science. Be part of an inclusive and diverse workforce that's changing the face of retail technology with their creativity and innovative solutions. Our vested interest in our employees translates to deliver the best products and solutions to our customers.

About Kloud9 Technologies
About
Kloud9 was founded with the vision of enabling our customers to transform into an intelligent enterprise with our “AI-First” approach. We help our customers in their data transformation and insights transformation journeys and enable them to make smart business decisions.
At Kloud9, we know AI & ML is one of the key technologies that can help organizations to significantly improve their customer experiences and transform their business operations to enable them to survive & thrive in this global competitive market.
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Job Title : Full Stack Engineer (Python + React.js/Next.js)
Experience : 1 to 6+ Years
Location : Bengaluru (Indiranagar)
Employment : Full-Time
Working Days : 5 Days WFO
Notice Period : Immediate to 30 Days
Role Overview :
We are seeking Full Stack Engineers to build scalable, high-performance fintech products.
You will work on both frontend (Typescript/Next.js) and backend (Python/FastAPI/Django), owning features end-to-end and contributing to architecture, performance, and product innovation.
Main Tech Stack :
Frontend : Typescript, Next.js, React
Backend : Python, FastAPI, Django
Database : PostgreSQL, MongoDB, Redis
Cloud : AWS/GCP, Docker, Kubernetes
Tools : Git, GitHub, CI/CD, Elasticsearch
Key Responsibilities :
- Develop full-stack applications with clean, scalable code.
- Build fast, responsive UIs using Typescript, Next.js, React.
- Develop backend APIs using Python, FastAPI, Django.
- Collaborate with product/design to implement solutions.
- Own development lifecycle: design → build → deploy → monitor.
- Ensure performance, reliability, and security.
Requirements :
Must-Have :
- 1–6+ years of full-stack experience.
- Product-based company background.
- Strong DSA + problem-solving skills.
- Proficiency in either frontend or backend with familiarity in both.
- Hands-on experience with APIs, microservices, Git, CI/CD, cloud.
- Strong communication & ownership mindset.
Good-to-Have :
- Experience with containers, system design, observability tools.
Interview Process :
- Coding Round : DSA + problem solving
- System Design : LLD + HLD, scalability, microservices
- CTO Round : Technical deep dive + cultural fit
We’re hiring a hands-on Full-Stack Developer to join as our first technical hire and help turn our operational edge into scalable software. You’ll work directly with the founding team to:
* Build internal and guest-facing tools in React
* Develop a Node.js backend to power core workflows
* Integrate with property management software APIs (e.g., Guesty, Hostaway, Airbnb)
* Implement and extend functionality using AI APIs like OpenAI (required)
Our Stack
* Frontend: React
* Backend: Node.js (Express or similar)
* Database: MongoDB or Postgres
* APIs: REST/GraphQL, PMS integrations
* AI: OpenAI API and related services
Must-Have Skills
* 2+ years of full-stack development experience
* Strong proficiency in React and Node.js
* Demonstrated experience integrating external APIs (especially SaaS or PMS platforms)
* Familiarity working with OpenAI or other AI APIs
* Ability to work independently and ship quickly
Nice to Have
* Background in hospitality, rentals, or operational software
* Experience building dashboards or guest lifecycle tools
* Bonus: Prior experience with Guesty, Hostaway, or PMS APIs
We are looking for a Fullstack Developer experienced with Fullstack JavaScript, Cloud and IoT solutions. For the agile development of our web, mobile, and cloud applications and IoT products, building efficient, reliable and scalable solutions. A hands-on coding role, where you will build and manage your own team.
Tasks:
- Development of modern JavaScript-based applications in the back-end
- Development, implementation and optimisation of innovative IoT products, web apps and new features
- Technical product design, solution architecture, specifications and implementation of Livello solutions
- Work with a cross-functional team to define, build, test, and deploy universal applications
- Version control with Git is part of your daily work and continuous integration
- Ensure the implementation of technical standards, quality assurance and best practices.
Requirements:
- Bachelor's degree in Computer Science or comparable field of study
- 3-4 years experience in agile software development.
- Proficiency in Javascript, Node.js, TypeScript, Reactjs, Reactnative and Nest.js, MongoDB.
- Experience with GraphQL and docker as well as state management solutions (Redux, Saga)
- Experience with test and deployment automation (Gitlab, Fastlane, Jest).
- Experience with MongoDB or any equivalent Database.
- Ability to work cooperatively and independently, analytical thinking, willingness to lead and take on responsibility
- Fluent in English.
Nice to have:
- Experienced in IoT-to-Cloud managed services, Microservices, Kubernetes and Docker on GCP / AWS
- Knowledge of IoT device management and message brokers like AMQP or MQTT.
Benefits
- A responsible position in a fast-growing and highly innovative start-up
- An agile and diverse team with colleagues from all over the world, working with our main office in Germany
- English speaking open work environment, with flat hierarchies and short decision-making paths
- Advanced technology stack leveraging cutting-edge IoT hardware and software
- Creative freedom for own ideas, projects and personal development.
We are dedicated to revolutionizing the tech industry through our advanced software solutions. We are in search of a talented and passionate Full Stack Developer (MERN STACK) with expertise in both frontend and backend technologies. This role is crucial for driving innovation and enhancing the performance of our web applications, ensuring an exceptional user experience.
I. Key Responsibilities:
A. Frontend Development:
1. Develop and maintain high-quality web applications using React.js and other frontend technologies.
2. Create responsive, user-friendly interfaces adhering to UI/UX design principles.
3. Optimize web applications for maximum speed and scalability.
B. Backend Development:
1. Develop and maintain efficient, reusable, and reliable code using Node.js, Express.js, or other backend frameworks.
2. Implement effective RESTful APIs and server-side rendering techniques.
3. Collaborate with the team to design and implement database schemas, ensuring data integrity and security.
C. Collaboration and Communication:
1. Work closely with cross-functional teams, including UX/UI designers, backend developers, and product stakeholders.
2. Participate in code reviews and provide constructive feedback to peers.
3. Communicate effectively with team members and clients to manage expectations and coordinate tasks.
II. Skills and Qualifications:
A. Frontend Technologies:
1. Proficiency in HTML5, CSS, JavaScript ES6, React.js, and Bootstrap.
2. Familiarity with state management libraries (e.g., Redux) and frontend development tools (Babel, Webpack, NPM).
B. Backend Technologies:
1. Proficiency in Node.js, Express.js, Django, Flask, or other backend frameworks.
2. Experience with databases and ORM frameworks (SQL, NoSQL, Sequelize, SQLAlchemy, etc.).
C. Development Practices:
1. Solid understanding of the full web development life cycle and RESTful API design.
2. Experience with testing frameworks (Jest, Mocha, etc.) and version control systems (GitLab, GitHub).
3. Familiarity with continuous integration/continuous deployment pipelines (e.g., Jenkins, Strider) and containerization (Docker, Kubernetes).
D. General Skills:
- Total experience should be 10 yrs with minimum experience as full stack developer 5 plus years
- Effective team player with strong problem-solving skills.
- Excellent verbal and written communication skills.
- Bachelor’s degree in Computer Science, Engineering, or a related field.
Job Purpose
We work in the latest technology, and our foundations are data structures, algorithms, solid logical reasoning, and mathematics. We are looking for very strong engineers who love coding, optimizing, and ensuring their code is the most efficient.
You will be involved with hardcore development. If you are an assembler of code or packages from different places to build something, you may not find our team to be the right fit.
You must be someone who can build anything from the ground up. Programming language should not be any barrier for you, as you should be able to pick up any programming language or underlying technology within a week.
Key Areas of Responsibility
Core development. Ready to participate in the designing, brainstorming, and development process. You must give sleepless nights to meet deadlines whenever required.
Desired Candidate Profile
Essential Skills
- Reliable, Accountable, and Trustworthy
- Ability to understand software requirements based on a wireframe/program specification
- Familiarity with GoLang / PHP / Python / Java / C / C++ / Linux Shell and Scripting / HTML / CSS / JS / Node.js is a plus
- Effective communication skills to ensure smooth coordination of tasks with the Team Leader.
- Knowledge of MongoDB, MySQL, and PL/SQL is a plus
- Familiarity with ML, TensorFlow, and Keras is a plus
- Knowledge of web servers such as Apache, NGNIX, and the HTTP protocol is a plus.
- Knowledge of multi-process, threads, memory, and filesystem on Linux is desirable.
- Must Solve The Following
To consider you for the current opening, please make sure to understand the following question and solve it. A simple program in any programing language would do. If you cannot solve this, please do not apply.
Write a function foo(x) where foo(foo(x)) = -x (assume x to be an integer, and foo(x) has to be always real), any programming language would do. Before submitting the answers, please verify that the output of foo(foo(10)) should be -10 and foo(foo(-10)) should be 10.
KEY RESPONSIBILITIES
- Building a website based on the given requirements and ensure it’s successfully deployed
- Responsible for designing, planning, and testing new web pages and site features
- A propensity for brainstorming and coming up with solutions to open-ended problems
- Work closely with other teams, and project managers, to understand all stakeholders’ requirements and ensure that all specifications and requirements are met in final development
- Troubleshoot and solve problems related to website functionality
- Takes ownership of initiatives and drives them to completion.
- Desire to learn and dive deep into new technologies on the job, especially around modern data storage and streaming open source systems
- Responsible for creating, optimizing, and managing REST APIs
- Create website content and enhance website usability and visibility
- Ensure cross-browser compatibility and testing for mobile responsiveness
- Ability to integrate payment processing and search functionality software solutions
- Stay up-to-date with technological advancements and the latest coding practices
- Collaborate with the team of designers, content managers, and developers to determine site goals, functionality, and layout
- Monitor website traffic and overall system’s health with Google analytics to ensure high GTmetrix score
- Build the front-end of applications through appealing visual design
- Design client-side and server-side architecture
- Develop server-side logic and APIs that integrate with front-end applications.
- Architect and design complex database structures and data models.
- Develop and implement backend systems to support scalable and high-performance web applications.
- Create automated tests to ensure system stability and performance.
- Ensure security and data privacy measures are maintained throughout the development process.
- Maintain an up-to-date changelog for all new, updated, and fixed changes.
- Ability to document and manage all the software design, requirements, reusable & transferable code, and other technical aspects of the project.
- Create and convert storyboards and wireframes into high-quality full-stack code
- Write, execute, and maintain clean, reusable, and scalable code
- Design and implement low-latency, high-availability, and performant applications
- Implement security and data protection
- Ensure code that is platform and device-agnostic
EDUCATION & SKILLS REQUIREMENT
- B.Tech. / BE / MS degree in Computer Science or Information Technology
- Expertise in MERN stack (MongoDB, Express.js, React.js, Node.js)
- Should have prior working experience of at least 3 years as web developer or full stack developer
- Should have done projects in e-commerce or have preferably worked with companies operating in e-commerce
- Should have expert-level knowledge in implementing frontend technologies
- Should have worked in creating backend and have deep understanding of frameworks
- Experience in the complete product development life cycle
- Hands-on experience with JavaScript, HTML, CSS, JQuery, JSON, PHP, XML
- Proficiency in databases, including analytical (e.g., mySQL, MongoDB, PostgreSQL, DynamoDB, Redis, Hive, Elastic etc.)
- Knowledge of architecting or implementing search APIs
- Great understanding of data modeling and RESTful APIs
- Strong knowledge of CS fundamentals, data structures, algorithms, and design patterns
- Strong analytical, consultative, and communication skills
- Excellent understanding of Microsoft office tools : excel, word, powerpoint etc.
- Excellent organizational and time management skills
- Experience with responsive and adaptive design (Web, Mobile & App)
- Should be a self starter and have ability to work without being supervised
- Excellent debugging and optimization skills
- Experience building high throughput/low latency systems.
- Knowledge of big data systems such as Cassandra, Elastic, Kafka, Kubernetes, and Docker
- Should be willing to be a part of a small team and working in fast-paced environment
- Should be highly passionate about building products that create a significant impact.
- Should have experience in user experience design, website optimization techniques and different PIM tools
- Designing and deploying database
- Ensuring the entire stack is designed and built for speed and scalability
- Designing and constructing REST API
- Mentoring other developers of the team with code and design reviews
What you need to have:
- Strong proficiency Primary Stack (Golang, Node.Js, Express, ES6, Docker, AWS, PHP, Laravel, Microservices, Rest APIs)
- Strong proficiency in Database tools (MongoDB, Mongoose, MySQL, Postgres, Eloquent, Sequelize, DynamoDB, Lucid Models, PDO, Redis, Memcached, GraphQL)
- Experience implementing testing platforms and unit tests Proficiency with Git
- Proficiency in tools (Ajax, Axios, TDD, OOP, MVC, jQuery, npm, Webpack, Guzzle, Git, HTML, CSS, Linux, Kubernetes,SVN, Blade, Ubuntu, PHPunit, jest, JIRA)
- Strong proficiency in AWS, or similar environments (Microservices, Docker, AWS, Lambda, S3 bucket, SQS).
What You'll Do
- As an early member of our engineering team, you will work directly with the CTO and Head of Product to spec, design, and build the core product functionality
- Help us build out a reliable team in India that knows our tech stack and is passionate about the work that we do.
- Motivate and lead a team of software developers to reach and exceed company goals.
- Solve problems you don't know how to solve: You'll encounter challenges we haven't yet come across yet. And when the time comes, you'll think through problems, evaluate approaches and teach yourself whatever is needed.
- Lay a solid foundation for the product to scale, keep our technical debt in check and help us hire a team of incredible engineers.
What We're Looking For
- 6+ years of experience as a software engineer
- 1+ years of experience leading projects or teams of engineers
- Hustle & Grit. Willingness and desire to take on personal responsibility for the business as a whole and “figure it out”, whether it’s in your exact functional lane or not.
- Excitement and passion for expanding financial access to healthcare.
- Experience with Java, a relational database, React (or a comparable front-end framework) and building full-stack web apps.
- A great understanding of how Restful services and Gradle works
- Ability to overlap with EST morning hours
- Our full tech stack includes: Docker, Spring, Gradle, Hibernate, ExpressJS, NextJS, Amazon Web Services, Java, N8N, Python
Preferred Technical Experience: React JS
We are looking for a Node.js Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.
Responsibilities
- Integration of user-facing elements developed by front-end developers with server side logic
- Writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Implementation of security and data protection
- Creating APIs and backend systems
- Scraping sites and creating backend dashboards for data management
- Experience with React.js and native is a plus but not required
- Backend infrastructure management and deployment
- Experience with MongoDB, Express is a plus.













