Senior full stack developer, MUMBAI Applicants only (Node & React)

Job Title : Full Stack Developer (Crypto Exchange)

Experience : 4+ Years

Location : Gurugram & Vadodara (On-site)

Role Overview :

We are looking for a Full Stack Developer with strong expertise in both backend and frontend development, along with exposure to crypto exchange systems or fintech platforms.

In this role, you will work on building high-performance, real-time trading applications, contributing to core systems like order execution, pricing engines, and wallet integrations.

Key Responsibilities :

• Design, develop, and maintain scalable backend services and APIs.
• Build and optimize responsive frontend applications for trading interfaces.
• Work on real-time systems such as order books, pricing engines, and trade execution.
• Integrate with blockchain networks, wallets, and third-party APIs.
• Ensure platform security, performance, and reliability.
• Collaborate with product, design, and DevOps teams for end-to-end delivery.
• Participate in system design, architecture discussions, and code reviews.

Required Skills & Qualifications :

• 4+ years of experience in Full Stack Development.
• Strong expertise in :
• Backend : Node.js and/or Python
• Frontend : React.js and/or Next.js
• Experience with REST APIs and microservices architecture.
• Strong understanding of databases (MongoDB, PostgreSQL, MySQL, etc.).
• Hands-on experience with Docker and cloud platforms (AWS preferred).
• Solid understanding of system design, scalability, and performance optimization.

Preferred (Good to Have) :

• Experience working with a crypto exchange or trading platform.
• Understanding of blockchain fundamentals (Ethereum, Bitcoin, etc.).
• Experience with wallet integrations and on-chain transactions.
• Familiarity with WebSockets and real-time data streaming.
• Knowledge of security best practices in fintech/crypto systems.

Why Join Us ?

• Opportunity to work on a high-impact, real-world crypto exchange.
• Build and scale systems from early-stage to production.
• Work in a fast-paced, ownership-driven environment.
• Exposure to cutting-edge blockchain and trading technologies.

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

Requirements:

• Minimum 3 years of experience in software development into MERN (React & Node.js ) technology.
• Bachelor degree in Computer Science or IT.
• Must have Hands-On coding expertise of React.js, Reactstrap, NodeJS, MongoDB and ExpressJS.
• Configuring and managing deployment on AWS (EC2 IAM, S3).
• Knowledge of developing REST API using Express framework and front end integration with PUG engine.
• Experience with popular JS libraries like Ember, Babel, Typescript, Webpack, Socket etc.
• Exposure to scm tools like git, Git Hub, CI/CD methods, code coverage tools like SonarQube, etc.
• Good understanding of the object-oriented design and programming concepts, core JavaScript concepts like scope/closures, the event loop and asynchronous callbacks, promises, API formation, POSTMAN API etc.

Our Tech Stack: React.js, Node.js, MongoDB, AWS

https://www.onedigitaltrust.com/">OneDigitalTrust, Inc. is a B2B2C software startup disrupting the traditional estate planning & wellness industry to serve all adult Americans, but especially those that usually cannot afford the traditional methods to protect themselves and their loved ones. 

We are currently recruiting a Sr. Full Stack Engineer to add to our team.

We are looking for a self-motivated, goal-driven individual to help advance their experience and learn from a collaborative environment and help take our company to the next level.

Our platform is an enterprise white-label configurable platform with comprehensive capabilities that sells itself. Our biggest goals are to continue to enhance the capabilities of the platform to meet the needs of the users.

The following would be your responsibilities:

• Assuming full-stack technical delivery of the Company’s SaaS platform under the direction of the CTO; supporting the architecture and development of the product platform;

• Supporting the policies, and procedures of Company’s platform security to adhere to industry­ standards and as may be requested in case of security audit requests;

• Helping in the creating/management of the Development, Testing (QA) and Production architecture, standards processes and procedures for the product/platform;

• Helping improve the technical team's processes as per our retrospective learnings and best practices;

• Estimating bug/feature implementation tasks to help with sprint/release planning

• Experience with creating, and maintaining third-party integration partner's technical relationships and APIs integration; including handling issues, version changes, and impacts to the platform;

• Delivering and Maintaining our continuously enhanced ODT product platform;

• Helping ensure the regular release, enhancement, maintenance and operation of the ODT DEV/TEST/PROD infrastructure and environment and uptime;
• Providing key inputs into the definition of the platform’s evolution from both a requirements and technical implementation and maintenance perspective; and

• Supporting Company business development and marketing activities to promote the sale and after-sale support to prospects and customers.

The following describes the type of person we are seeking:

Experience: 

• Strong TDD mindset for automated testing, and experience with lean/agile development methodologies in a startup environment

• Experience with maintenance of CI/CD based software delivery

• Ability to get up to speed quickly on the existing code base

• Having an architectural mindset and identify where maintain and enhance systems, but also know when we can refactor components

• Have a structured / process-oriented way of thinking and are able to build new features and models that will last through significant business scaling

• Can understand business needs and ability to maintain high-value product to optimize for the best user experience.

• Bonus points for heavy test automation experience and front-end/UI experience with Storybook

What We Offer:

Competitive salary

Startup culture with a strong team-centric environment. We work hard and have fun.

Independence to work autonomously. We care about results. The opportunity to learn & master the art of agile software delivery and automated testing. We invest heavily in the development of our team members.

Job Summary:

Greenie Startup is seeking a highly motivated and experienced Backend Developer to join our team. The ideal candidate should have a strong understanding of NodeJS, Distributed Systems, MongoDB, React, and other backend languages. The candidate will be responsible for designing, developing, and maintaining backend applications for our platform.

Responsibilities:

●     Develop and maintain backend services using NodeJS, MongoDB, and other backend languages

●     Design and develop RESTful APIs for the platform

●     Work with the team to develop scalable and fault-tolerant distributed systems

●     Implement Authentication, Identity Management, and Authorization mechanisms for the platform

●     Collaborate with the front-end team to integrate the backend services with the user-facing application

●     Write clean and maintainable code with a focus on performance and scalability

Requirements:

●     Bachelor's or Master's degree in Computer Science or a related field

●     At least 5 years of experience in backend development

●     Strong understanding of NodeJS, MongoDB, and other backend languages

●     Experience with distributed systems and RESTful APIs

●     Experience with React is a plus

●     Strong understanding of Authentication, Identity Management, and Authorization mechanisms

●     Familiarity with Firewall Security and other security mechanisms

●     Strong problem-solving skills and attention to detail

Responsibilities 

Design, implementation and delivery of solutions.

Solving new problems and address any issues regarding the architecture and performance. 

Focused on understanding customer needs and anticipate the changing business and technology landscape. 

Collaborate with teams from various verticals within and outside the company.

Qualifications 

2-5 years of Software Engineering experience in Node.js and React. 

Proven experience in architecting performant, complex application on web or mobile applications. 

Knowledge of end to end Software development life cycle.

Ability to work individually or in teams and mentor new developers to the team.

Strong knowledge of computer science, algorithms and design patterns. 

A degree in Computer Science or related field, or equivalent industry experience.

About Company:

Working with a multitude of clients populating the FTSE and Fortune 500s, Audit Partnership is a people focused organization with a strong belief in our employees. We hire the best people to provide the best services to our clients.

APL offers profit recovery services to organizations of all sizes across a number of sectors. APL was borne out of a desire to offer an alternative from the stagnant service provision on offer in the profit recovery industry.

Every year we cover million of pounds for our clients and also work closely with them, sharing our audit findings to minimize future losses. Our dedicated and highly experienced audit teams utilize progressive & dynamic financial service solutions & industry leading technology to achieve maximum success.

We provide dynamic work environments focused on delivering data-driven solutions at a rapidly increased pace over traditional development. Be a part of our passionate and motivated team who are excited to use the latest in software technologies within financial services.

Headquartered in the UK, we have expanded from a small team in 2002 to a market leading organization serving clients across the globe while keeping our clients at the heart of all decisions we make.

Roles and Responsibilities:

As a Developer, you will join our global team and develop industry leading products, tools and applications for the financial services and risk advisory industry. You will display a high level of commitment to customer service, professionalism and software engineering. Candidates should be a high potential full stack developer, preferably with strong database technology experience such as  MS SQL. We provide services and software to our global client base to identify errors in financial and trading systems using our suite of audit tools. As a Developer, you will be responsible for the maintenance and upgrade to cutting edge technologies as well as the creation of new innovative applications utilizing machine learning and AI.

Desired Candidate Profile:

• 2-3 years of previous experience
• Confident handling of server-side programming with C#
• Confident handling of fundamental front-end languages such as HTML, CSS and JavaScript
• Familiarity with database technologies such as MS SQL, MySQL, PostgreSQL or MongoDB
• Basic knowledge of Algorithms and Data Structures
• Analytical and solution-oriented thinking
• Organisational skills and experience in project management
• Knowledge of Scrum methodology
• Familiar with source control / Git
• Knowledge of REST API design and development concepts
• Someone who is enthusiastic and eager to learn
• Very good command of English and excellent communication skills

Perks & Benefits:

• A fantastic work life balance
• Competitive compensation and benefits
• Exposure of working with Fortune 500 organization
• Expert guidance and nurture from global leaders
• Opportunities for career and personal advancement with our continued global growth strategy
• Industry leading training programs
• A working environment that is exciting, fun and engaging