Backend Developer

Job Title : Backend Engineer (AI-First | FinTech/Crypto)

Experience : 3 to 6 Years

Location : Gurugram (Sector 49)

Working Hours : 10:00 AM – 6:00 PM

Work Mode : On-site | 6 Days Working

Employment Type : Full-time

Role Overview :

This is not a typical ticket-based engineering role. You will take end-to-end ownership of systems—designing architecture, building scalable solutions, and solving real-world performance challenges.

We operate in an AI-first engineering environment, leveraging advanced tools and automation workflows to build high-performance distributed systems.

Mandatory Skills :

Java/Spring Boot or Node.js, System Design (HLD/LLD), Distributed Systems, Event-Driven Architecture (Kafka/RabbitMQ), Low-Latency APIs, PostgreSQL/MongoDB, CI/CD, Docker/Kubernetes, AI-assisted development (Copilot/Cursor/Claude)

Key Responsibilities :

• Design and build scalable backend systems (Java/Spring Boot, Node.js, or similar).
• Architect and implement event-driven systems (Kafka, RabbitMQ, pub/sub).
• Develop secure and reliable financial systems with strong data integrity.
• Solve scalability and performance challenges in fintech/crypto environments.
• Own features end-to-end: design → development → deployment → monitoring.
• Work with real-time data pipelines (WebSockets, streaming, event sourcing).
• Define service contracts and optimize system architecture.

AI-First Engineering (Must-Have Mindset) :

You will :

• Use tools like GitHub Copilot, Cursor, and Claude in daily development
• Follow spec-driven development using structured instructions
• Review, validate, and ship AI-generated code with strong engineering judgment

Core Requirements :

• 3+ years of backend development experience.
• Strong expertise in Java (Spring Boot) or Node.js.
• Solid understanding of System Design (HLD/LLD, Distributed Systems).
• Experience with event-driven architectures (Kafka, RabbitMQ, async pipelines).
• Hands-on experience building low-latency, high-throughput systems.
• Strong database knowledge (PostgreSQL, MongoDB, etc.).
• Understanding of security, performance optimization, and reliability.
• Experience with CI/CD, Git, Docker, Kubernetes.
• Exposure to React / React Native is a plus.

Good to Have (Differentiators) :

• Experience in FinTech / Crypto / Web3 / Blockchain.
• Built systems for trading, payments, or real-time financial data.
• Experience with AI agents, automation pipelines, or agent-based systems.
• Exposure to parallel AI workflows (coding / testing / refactoring).
• Contributions to open source or technical blogs.
• Experience handling production-scale systems.

Job Description :

We are looking for a Full Stack Developer specializing in Angular JS, NodeJS, and React Native, who is extremely hands-on and can take charge of the complete Web Development process to deliver unique & customer-centric web applications.

Skills :

- PRIMARY SKILLS NEEDED: NodeJS, AngularJS, React JS

- MySQL and NoSQL DB (like MongoDB/Cassandra) - MUST HAVE.

- jQuery, JSON, AJAX, web services/REST, SQL.

- JavaScript frameworks like NodeJS, AngularJS, ReactJS, Jasmine or Ember, etc., or JS-based build tools like Grunt, Gulp, and Bower.

- Working knowledge of Apollo, GraphQL, and Moment.js is an advantage.

- UX or UI designing experience is an advantage.

Experience :

- 3+ years of Full Stack Application development experience is a must.

- Deep understanding of client-side development, coding in HTML5, CSS3, JavaScript ES6, and jQuery.

- Strong experience using a client-side MVC framework such as NodeJS, React JS, NextJS, Redux, and AngularJS.

- Topnotch programming skills and writing code for robust software design.

- Experience in responsive design, cross-browser compatibility, and website performance.

- Experience in object-oriented design skills.

- Aggressive problem diagnosis and creative problem-solving skills.

- Experience with Git.

- Experience with handling Services, RESTful, and APIs.

- Knowledge of frontend CSS frameworks like Bootstrap, Material UI, and preprocessors like SASS and LESS.

Responsibilities :

- To work with a cross-functional software development team on highly visible strategic projects as an expert-level individual contributor to the coding tasks assigned.

- Responsible for the development of highly responsive, web-based UI in a flexible and well-structured front-end architecture.

- Experience working with remote data via REST and JSON

- Experience with third-party libraries and APIs (Google APIs etc.)

- Produce well-designed efficient code in a timely manner to meet delivery timescales/milestones.

- Mentor other developers on software best practices and technical guidance and help grow their software development skill sets.

- To proactively stay plugged into emerging technologies/industry trends and apply them to operations and activities.

- Should demonstrate the ability to handle multiple projects simultaneously, manage priorities and communicate progress effectively.

Responsibilities for Jr. Node JS Developer: 3+yrs

· Should have relevant object-oriented application-building experience in a professional environment.

· Design and implementation of low-latency, high-availability, and performant applications.

· Implementation of security and data protection.

· Thorough understanding of relational databases such as MySQL or similar technologies.

· Excellent coding skills in Node.js, and JavaScript.

· Knowledge of working closely with code versioning tools like git.

· Excellent communication skills and being able to work independently or in a full team.

Required Skills:

· Strong proficiency with JavaScript.

· strong hold on Node.js and frameworks.

· Understanding the nature of asynchronous programming and its quirks and workarounds.

· Good understanding of server-side templating languages.

· Good understanding of server-side CSS preprocessors.

· Basic understanding of front-end technologies, such as HTML5, and CSS3.

· Understanding accessibility and security compliance.

· User authentication and authorization between multiple systems, servers, and environments.

· Integration of multiple data sources and databases into one system.

· Understanding fundamental design principles behind a scalable application.

· Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform.

· Creating database schemas that represent and support business processes.

 2+ years experience as a developer with a proven track record in on-time and successful deliveries.

- Must be highly proficient in NodeJS, Javascript and MySQL with Microservices (REST web services )

- Work end to end on micro-services and SPAs built on cutting-edge technologies like Nodejs (Strong practical experience preferred)

- Strong knowledge of database & web applications.

- Preferred : grunt, wagner, npm, passport, redix, chai

- Excellent problem solving and communication skills, so that you are able to articulate technical concepts to the team, also excellent development, and debugging skills

- Ability to learn, act, and thrive in a fast-paced environment with a distributed team

Duties & Responsibilities :

- Should be taking requirements to design and building reusable modules.

- Building, scaling and performance tuning.

- Advance understanding of front-end technologies, such as HTML5 and CSS3.

- Advance understanding in AWS, NPM (Node JS Package Manager), GIT and Unit testing.

- Strong work experience in Design Patterns and Algorithms.

- Experience with debugging, troubleshooting and problem-solving issues.

- Must have strong communication skills.

What You'll do:

• 4+ years of experience building scalable backends using Nodejs
• In-depth knowledge of any framework of Nodejs (i.e. Express, Hapi, Koa.js)
• Hands on experience with developing REST APIs using Node.js and any of the above framework
• Should have experience with Socket.IO
• Familiar with oauth integration Social Networking API (Facebook, Twitter, Linked In, Google+)
• Good understanding of standard authentication systems such as OAuth2 and JWT
• Knowledge of server-side templating (e.g. Jade, Handlebars.js, etc.)
• Should have understanding of model, caching, async mechanisms
• Hands-on experience with implementing Role based User authentication and authorization system
• Understanding of caching, database interactions, middlewares
• Able to engineer the best performing solutions and always keeping scalability in mind

What makes you a great fit:

• Strong problem solving skills
• Knowledge of data structures and algorithms
• Hungry for more responsibility and knowledge
• Passion for building robust systems that are engineered to handle failure scenarios, an undying love and attitude for maintaining coding standards
• Strong advocate for producing quality software who makes sure issues are raised and resolved
• Experience with at least one of the cloud platforms like AWS, GCP, Azure, Digital Ocean etc. (docker, Kubernetes, microservice good to have)

Must have skillsets:

Skills : NodeJs

Experience required: + years

Job Type: Full time/ Permanent

Perks and Benefits :

• 5 days working.
• Flexible shift timings
• Company-sponsored certifications.
• Team friendly culture
• Flat hierarchy
• Carrom, Table tennis games, Cricket Tournament Participation for interested employees
• Snack-filled pantry for team members
• Group Medical Insurance (*)

Requirements and Qualifications :
- BS/MS degree in Computer Science, Engineering or a related subject
- 3-5 years of experience with Ruby and the Rails framework
- 3-5 years of experience with Git and Github
- 3-5 years of experience with SQL backends, preferably MongoDB, PostGre SQL
- Familiarity with testing tools such as Rspec
- Knowledge of Docker and docker-based deployment

- Critical thinker and problem-solving skills
- Team player
- Good time-management skills

Job Description

We are looking for a Back-End Web Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be 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 coworkers into the application. A basic understanding of front-end technologies is therefore necessary as well.

Responsibilities

• Integration of user-facing elements developed by a front-end developers with server side logic
• Building reusable code and libraries for future use
• Optimization of the application for maximum speed and scalability
• Implementation of security and data protection
• Design and implementation of data storage solutions

Skills And Qualifications

• Basic understanding of front-end technologies and platforms, such as JavaScript, HTML5, Nodejs and CSS3
• Good understanding of server-side CSS pre-processors, such as LESS and SASS
• User authentication and authorization between multiple systems, servers, and environments
• Good Understanding of Mysql database.
• Management of hosting environment, including database administration and scaling an application to support load changes
• Data migration, transformation, and scripting
• Setup and administration of backups
• Outputting data in different formats