Mern Stack Developer

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.

Location: Hyderabad / Indore

Experience: 6 - 8+ years

Employment type: Full-time

What we're looking for (must-have):

• 6-8+ years building production software, including a real architecture or principal-engineer chapter where you owned system design end to end.
• Deep MERN expertise — you can architect and go hands-on in Node.js and React without a handoff.
• Strong cloud architecture skills on at least one major provider (AWS / GCP / Azure) — networking, security, scaling, and cost.
• Demonstrated experience designing systems in a regulated or high-stakes domain: healthcare (HIPAA/PHI), payments (PCI-DSS), fintech, or similar.
• The judgment to make irreversible decisions and the communication to bring a team along with you.
• Accountability for the outcome of your architecture in production — not just the diagram.

Nice to have:

• HIPAA / healthcare compliance in production — audit trails, BAA-covered infrastructure, PHI access controls.
• Payment systems experience — Stripe, Braintree, PCI-DSS environments, tokenization, reconciliation.
• Event-driven architecture, microservices, and high-availability system design.
• Experience in a multi-product, consulting, or venture-studio environment where context-switching is the norm.
• An AI-native development practice and opinions on how AI changes architecture and delivery.

Responsibilities

• Build and maintain frontend applications using Next.js, React, TypeScript, and TailwindCSS
• Design and develop RESTful APIs using Node.js and Express.js
• Integrate frontend with backend APIs efficiently
• Write clean, reusable, and well-documented code
• Optimize applications for performance, SEO, and scalability
• Work with databases to design schemas and write optimized queries
• Implement authentication, authorization, and role-based access
• Debug, test, and improve existing systems
• Collaborate with designers and product managers to translate requirements into technical solutions
• Participate in code reviews and technical discussions

Required Skills

• Extensive senior level full-stack software development experience with Node.js (2 or more years) with detailed understanding of user interface frameworks, back-end software architecture interactions and node module capabilities.
• Two or more years' experience with one or more JavaScript frameworks/technologies such as Express.js, Angular.js, React.js, MobX or Flux.js.
• Strong development experience with developing RESTful Web Services using Node.js.
• Comprehensive knowledge of Scrum and Kanban Agile development process and ceremonies including scrums, planning events, backlog grooming, retrospectives and demos.
• Complex programming, program debugging, data analysis, problem analysis and resolution of issues within open source applications.
• Strong communication and collaborative skills in providing technical direction and hands-on software development to include design, development and testing.

Desired Skills

• Client development experience with HTML, DHTML, CSS, JavaScript
• Experience with other JavaScritpt frameworks such as Express, Restify, Hapi, Sails, JOI, and Kinex.
• Javascript experience with ECMAScript2015 (ES6), ECMAScript2016 (ES7) or Bable compiler.
• Operating System and Infrastructure experience with Linux, Windows 7, Unix, Solaris, JMS, OOD, CVS.
• Experience with VersionOne Application Lifecycle Management Tools
• Experience with Jenkins and Continuous Integration.
• Standards & Protocols knowledge including XML, XSLT, WSDL, JSON.
• Experience with Testing Tools including Mocha, Chai, Sinon, Supertest, Enzyme, Instanbul, Selenium, Load Runner, JSLint and Cucumber.
• Experience with source code versioning and Pull Requests with Git and Stash.
• Experience with IDEs such as Sublime and Atom.
• Knowledge of SonarCube, Phabricator, Gerritt, Karma, Jasmine
• Knowledge of projects using SAFe methodology.
• Experience with DevOps processes and implementation.
• Experience with environments utilizing Cloud Technologies such as Amazon Web Services.
• Experience with NGiNX web server.

JOB DESCRIPTION

It is an app that allows offline businesses to sell their products and services online. On our app, the users can make beautiful product catalogues (catalogs) right from a smartphone and share with their customers easily on different social media apps such as Whatsapp Business, Whatsapp, Facebook, Instagram etc. Praised by users all over India, thisapp has saved declining businesses by helping them transfer their shop online. The journey has just begun and we are on a mission to make India truly Digital. They are currently powering over 3.7 M ecommerce stores built by indian small businesses

and growing at a crazy rate.

We are looking for a full-stack developer to join our team who will be part of our new innovations team.

Responsibilities:

• Rapidly developing new user-facing features & product prototypes using React.js & Django.

• Will be responsible for new product prototypes, quick feature ideations & rapid response for critical issues

• Work on the their frontend store - Built with react & nextjs.
• Work on their backend - Built with Python Django & DRF
• Collaborate with existing team on our Android apps

Requirements:

• Familiarity with React & Next Js for frontend.
• Proficiency in backend development with Python Django & DRF
• Familiarity with Postgres, Elasticsearch & Mongo.
• Familiarity with Android app development with Native JAVA
• Familiarity with REST APIs architecture & working with third party APIs.

Experience required - 3 year(minimum) in MERN Stack

Salary - 15-20 LPA

About the Company

The company is one of the fastest-growing B2B SAAS Marketplace to procure industrial materials. The startup is generating an Annual Revenue of Rs. 100 Crore. You will get to work in a fast-paced environment with a brilliant agile tech team led by top engineers.

Location: Pune, 3 months Remote then Work from Office or Hybrid Working

Qualifications & Criteria

1. 3+ Years of development experience in the full-stack development (preferred MERN technology stack). Should be proficient in working with technologies like JavaScript, CSS, and JS with frameworks like NodeJs and ReactJS.

2. Should have good knowledge of databases like Linux.

3. As part of the brains of the startup, You are smart, creative, and love solving business challenges and thereby find new ways to propel the growth of the company.

4. You are passionate about the growth and want to become a future technical leader within the company. Your work and attitude should reflect your commitment for the same.

Responsibilities:

1. Should be able to work independently once proper guidance is provided.

2. Knowledge of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations

3. Ensure timely completion of development activity.

4. Prepare training documents and provide training to internal teams on tools.

5. Consult, design, and develop well-structured, scalable in-house tools.

6. Should be able to write optimized business logic for business functions

**Work remotely / Work From Home with BigStep Technologies throughout your tenure**

Desired candidates must have 7+ years of total experience in backend development with good expertise in MEAN Stack (MongoDB, ExpressJS, AngularJS, Node.js) and JavaScript, along with strong development and coding skills, good analytical and problem-solving skills.

Roles and Responsibilities :

What You'll Do

• Create the system architecture for any product from scratch as well as drive it for more than one development teams
• Design and deliver solutions that enable fast and efficient deployment of quality code to production
• Document the architectural blueprint and end to end design through flowcharts and diagrams.
• Set coding standards for development teams and ensure all released code is following standards
• Oversee the code review process, performing reviews when necessary
• Establish strong communication channels and relationships with the development teams, supporting them throughout the release cycle
• Continuously evaluate the existing software to identify areas of improvement and ensure architectural integrity as additional features are added.
• Lead DevOps and implement tooling and process improvements when you identify gaps
• Work with various stakeholders and identify the scope of the work, provide high level estimations, create a timeline and come up with the approach and design for the same.
• Evaluate and recommend tools, technologies and processes to ensure the highest quality product platform.
• Coach and mentor the development teams to improve the overall expertise and skills of the team.
• Take care of the development of critical components and POCs for new technologies to be used.
• Deliver high quality deliverables individually/as a team adhering to industry best practices.
• Troubleshoot any errors or issues that arise in the application/infrastructure components quickly and efficiently.

What You Bring

• 7+ years in software development or product engineering
• Proficient in MEAN Stack
• Good experience in backend development with Node.js
• Expertise in developing RESTful APIs
• Have created multi-transactional and highly redundant systems from ideation to production
• Customer-centric mindset
• Expertise in Agile SCRUM best practices
• Expertise in implementing front-end of applications using HTML5, Angular.js
• Proficient in MVC, OOPS concepts, Web Development Concepts, HTML, JSON, REST API development
• Strong coding skills, good analytical and problem-solving skills
• Ability to break down complex technical concepts into something digestible by non-technical stakeholders

Responsibilities:

• Design, develop, and maintain software applications.
• Go the extra mile to identify customer needs and pain-points. 
• Relentless focus on delivering high quality, bug-free code.
• Help and mentor those around you to achieve the team and company goals.
• Closely work with the SRE and DevOps team to set up microservices infrastructure. 
• Maintaining and auditing code/design quality as per set guidelines and standards in assigned projects.
• Testing of completed tasks in ongoing projects in the team before sending updates to reporting authority/client.
• Participate in application design, code reviews and documentation.

Requirements:

• Experience in agile development process.
• Excellent knowledge of HTML5, CSS3.
• Excellent knowledge of JavaScript.
• Experience with cross-browser, cross-platform and design constraints on the web
• Good understanding and experience of working on Vue.js/React.js.
• Prior experience building REST APIs
• Hands-on experience with Node.js/Golang/Java + Redis + Elasticsearch.
• Experience with AWS/GCP is a plus
• Knowledge of version control systems like GIT.
• Experience in developing automated unit and functional tests
• 3 - 6 years of experience with a Bachelor's in Computer Science or related field

I'm the founder of Version One Labs (look me up on LinkedIn) and I want you to work with me on an interesting new idea!

I was previously Director of Engineering at Crunchbase, led product and engineering at Oncue (venture-funded B2B SaaS) and have built products at multiple bay area startups. I run a product development studio, Version One Labs, that works with startups here in California. The website is a bit out of date but I’m currently working with a few exciting startups to help them with their product dev efforts.

This role is for a different mission though. I am currently in the early stages of building our first internal product and am looking for 2-3 scrappy, driven, and sharp developers who are interested in working on exciting ideas and build products from the ground up. 

You will learn a lot in the process.  If you have startup dreams of your own and are interested in some day doing your own thing, I strongly believe this experience + the wealth of knowledge I can share with you could be invaluable for you.

Here's what I'm looking for:

- you must be highly proficient with React (typescript, redux etc etc) or Rails (strong database design, clean code, and API building skills). I will check for your fluency with both.

- you enjoy the process of building something from scratch and don't require a ton of hand holding, i.e., you are self-driven

- you like the autonomy and freedom of working on early stage stuff and can manage your own time (I don't boss around and like working with people who I don't have to manage too much)

- you have utmost integrity (tell me what you don't know and deliver what you say you will, when you say you will)

- you are willing and open to new ideas and are a fast learner

If this is appealing to you, please apply. I respond quickly.

Job Summary

• Excellent hands-on experience with Go lang (if not Golang, in either JAVA, DotNet and/or NodeJS)
• Write CRONs and background tasks required for the growth of business and product
• Build REST APIs as required
• Ability to code using design principles
• Write reusable code and libraries for future use
• Have the working knowledge of Microservices Architecture using Docker
• Collaborate with other team members and stakeholders in executing various new and existing ideas
• Possesses the knowledge of developing and deploying in Linux environments
• Passion for building great products and loads of energy.

Key Skills
Skills that we would be more than happy for a dev to have: - Worked in CI/CD environments - Developed code using TDD/BDD approach. - Worked with Virtualization on Linux (KVM) - Experience in working in Agile development environment 

About You

We’re looking for exceptional Engineers with an amazing breadth and depth of technology expertise! If you’re the kind of person that looks at the bigger picture and want to build something that has a real impact on the end user, go ahead and apply for the position.

Ability to see the big picture but still love to code!

Strong in backend languages, such as Java, DotNet or NodeJS!

Familiar with client-side frameworks such as React, Angular, Vue etc.

Strong HTML/CSS skills – you understand not only how to build the data, but how to make it look great too.

Knowledge of architectural design and you like to build something scalable and flexible to support business

Agile or Scrum is your favorite development approach.

And when we start talking about performance, security and unit testing? Well that’s music to your ears