MERN Stack Developers

Key Responsibilities

• Design, develop, and maintain full-stack web applications using MongoDB, Express.js, React.js, and Node.js
• Build and optimise RESTful APIs and micro services
• Work closely with product managers, designers, and developers to deliver scalable solutions
• Write clean, maintainable, and testable code
• Ensure application performance, security, and responsiveness
• Mentor junior developers and contribute to code reviews

🔹 Must-Have Skills

• Strong hands-on experience with MERN stack (MongoDB, Express, React, Node.js)
• Proficiency in JavaScript (ES6+), HTML5, CSS3
• Experience with Redux / State Management in React
• Solid backend expertise with Node.js & Express.js
• Database design, queries, and performance tuning in MongoDB
• Good understanding of REST APIs, authentication (JWT, OAuth)
• Familiarity with Git, CI/CD pipelines, and Agile methodology
• Exposure to cloud platforms (AWS, Azure, GCP) is a plus

🎯 Preferred Skills

• Experience with TypeScript
• Knowledge of GraphQL, Docker, Kubernetes
• Unit testing with Jest / Mocha
• Experience mentoring or leading small teams

🎓 Education

• Bachelor's / Master's in Computer Science, IT, or related field

We are now looking for,

Senior SW Developer – IoT Platform Development

to join the team of experts at the KONE Services & Solutions R&D. You will work together with other professionals to develop advanced KONE digital solutions that leverage the latest in cloud and connectivity technologies.

You are a cloud development expert who is passionate about designing and implementing solutions for our connectivity solutions. You are familiar with the software development patterns and can turn the architectural plans to concrete SW designs. You understand and appreciate the modern SW development practices. You work at your best when you are working with people, and you enjoy helping others.

You will work in a key role inside our Agile SW development team. Your closest colleagues will be other developers, test professionals and the PO of the team. You will be part of KONE Technology and Innovation unit’s IoT Tribe.

Main responsibilities include,

• Producing more efficient software designs for new features in our IoT platform tribe
• Developing clean and efficient code based on the specifications.
• Unit and Integration Testing for the developed code and integrate with code coverage tools.
• Verify and deploy programs and systems
• Recommend and execute improvement for the existing offerings from the IoT platform.
• Create technical documentation for reference and reporting.
• Participating in knowledge sharing and demos

To be successful in this role,

• Having a degree in Computer Science or equivalent with minimum 5+ years of relevant working experience.
• More than 3 years proven experience in developing high volume scalable cloud solutions utilizing platforms like Amazon AWS with IoT domain.
• Having hands on development experience with Java, Node JS and TypeScript.
• Experience working with MVC, WEB API, RESTful services with IoT domain

• Team player with capabilities to take the lead and develop own competencies around the core knowledge is a must.
• Understanding of React JS is an added advantage.

• Strong experience with Serverless Cloud Compute Services with AWS or Azure

• Experience in working with AWS platform and its core services like Lambda, CloudWatch, CloudFormation, CDK, SQS, S3 etc., or its equivalent Azure services
• Understanding of Serverless design, network security, cloud design patterns, high availability and secure systems.

• Hands on experience with both SQL and No-SQL databases.
• Experience on DevOps ways of working with good understanding on CI/CD

We are a registered broker-dealer and ATS (Alternative Trading System) currently building a revolutionary ecosystem to support the issuance and trading of digital asset securities (tokenized securities and other assets). We envision a future where everything is tradeable and have already constructed the technological foundation on which this thesis can develop.

As an SEC and FINRA- regulated company licensed to conduct business in digital asset securities, we are positioned to bridge traditional finance and the digital future, leveraging technology to improve the capital markets for issuers and investors alike.

The Role

We are looking for a Senior Full Stack Developer (React, NodeJS) to produce scalable software solutions. You’ll be part of a cross-functional team that’s responsible for the full software development life cycle, from conception to deployment.

Responsibilities

• Perform hands-on software development, including writing code and unit tests, doing proof of concepts, conducting code reviews, and testing in ongoing sprints

• Work closely with product team and other full stack developers to implement innovative solutions to challenging web development problems

• Participates in system design and specifications, program logic and flow-charting, development, testing, debugging, documentation, and support

• Supports new and ongoing digital defi projects, and integration with clients and vendor platforms

• Provides analysis of problems and recommends solutions

Requirements

• 5+ years of experience working in React and able to demonstrate strong JavaScript knowledge

• 5+ years of experience working with NodeJS

• 3+ years of experience working with PostgreSQL and DynamoDB

• Experience with CI and CD environment and AWS platforms

• Proficiency working with Docker

• Experience writing APIs and securing APIs

• Proficiency working with ECS and EKS

• Strong experience in systems architecture design and development

• Strong experience building single-page web applications

• Ability to efficiently manage and build large, complex web applications

• Strong analytical and problem-solving skills, with good attention to detail

• Self-motivated, ability to work independently

• Ability to use creative thinking to develop innovative solutions to business problems

• Strong project management skills, including the ability to manage multiple projects simultaneously

• Ability to mentor other developers

• Ability to work in a fast-paced team environment

As our Full Stack Engineer, you will be developing fast, reliable and scalable web applications while taking responsibility for shipping core backend features.

Roles and responsibilities:

1. Develop smooth, scalable and pixel-perfect web-app products
2. Architect, optimize and scale complex systems like the database engine and APIs
3. Follow TDD and write well designed, factored, and tested code
4. Develop new features and maintain existing code
5. Manage infrastructure and ensure security of applications
6. Solve complex product and engineering challenges alongside the core team

What we're looking for in you:

1. 4+ years of experience in Full Stack Development
2. Extensive programming skills with a proficiency in Java, Spring Boot and Javascript
3. Have strong fundamentals in systems design and RDBMS and NoSQL databases
4. Product minded: Strong UI/UX and design sense
5. Strong understanding of asynchronous request handling and dynamic web page development
6. Experience working with React.js, Next.js, Node.js, HTML, CSS, Redux, TypeScript
7. Stellar problem solving and research skills with the ability to design scalable systems
8. Exposure with AWS/GCP, Docker, Kubernetes and CI/CD Setups
9. Experience in functional, L& P and security testing

Benefits of working with Rivi:

• Stock Options
• Flexible work hours
• More responsibilities and more opportunities
• The chance to exponentially grow in your career, as Rivi grows
• Work on real innovation and a futuristic vision
• Enhance your skill-sets and knowledge
• Opportunity to learn about many different verticals
• Feel empowered and change things - We value ideas and suggestions
• Work in an inclusive culture where transparency, creativity, accountability and ownership is encouraged