Senior 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

• Database Design & Development:
• Design, implement, and maintain PostgreSQL databases.
• Develop efficient schemas, indexes, and stored procedures to optimize data performance.
• Backend Development:
• Develop RESTful APIs and backend services using Node.js.
• Integrate databases with backend applications for seamless data flow.
• Query Optimization & Performance Tuning:
• Optimize SQL queries for performance and scalability.
• Monitor database health and troubleshoot slow queries or deadlocks.
• Security & Compliance:
• Implement database security best practices, including role-based access control (RBAC) and encryption.
• Ensure compliance with industry standards like GDPR, HIPAA, etc.
• Data Migration & Backup:
• Develop and maintain data migration scripts between different PostgreSQL versions or other databases like mongodb.
• Set up and manage database backup and recovery strategies.
• Write efficient SQL queries and manage database schemas using PostgreSQL.
• Build RESTful APIs and integrate third-party APIs/services.
• Optimize application performance and troubleshoot production issues.
• Ensure data security and protection practices are followed.
• Write clean, maintainable code and participate in code reviews.

Backend Developer responsible for managing back-end services and 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.

We are looking to recruit a candidate for a role that will require:

• Create and consume restful APIs
• Design, develop, and maintain internal and external applications
• Build efficient, testable, and reusable modules
• Write high quality, structured application/interface code and documentation
• Identify solutions through research and collaboration that resolves the root of problems as they arise
• Define functional and technical requirements for application software to develop skills and knowledge
• Troubleshoot, test and maintain the core product software and databases to ensure strong optimization and functionality
• Contribute in all phases of the development lifecycle

Requirement

∙ Proficient in Node.JS

∙ 2+ years’ experience designing, querying, and updating databases in MySQL/nosql 

∙ Passion for best design and coding practices and a desire to develop new bold ideas

∙ Good to have knowledge of AWS, Redis, ElasticSearch

Education: Min. Graduate in related discipline

Work experience: 2 years relevant experience

Primary responsibilities:

•Design, develop AWS IoT/Cloud-based applications using Typescript, Node.Js.

•Work closely with onsite, offshore, and cross functional teams, Product Management, frontend developers, SQA teams to effectively use technologies to build and deliver high quality and on-time delivery.

•Proactively Identify risks and failure modes early in the development lifecycle and develop POCs to mitigate the risks early in the program.

•Assertive communication and team skills.

•This individual be self-directed, highly motivated, and organized with strong analytical thinking and problem-solving skills, and an ability to work on multiple projects and function in a team environment.

Experience and Skills Required:

•More than 6 years of overall experience in Software domain.

•At least 3 years of experience in Cloud native applications.

•Solid working knowledge of Typescript, NodeJS.

•Thorough working knowledge in AWS, Lambdas, Microservices etc.,

•Experience in executing CI/CD processes

•Experience in Microservices Architecture

•Good Knowledge on Cloud security & security design control implementation.

•Knowledge of (AWS IoT Core) and In-depth knowledge of AWS cloud native services including Kinesis, DynamoDB, Neptune, Lambda, API Gateway, Timestream , IoT Core, GreenGrass, Aurora, Lambda, etc.

•Great knowledge in Agile/Scrum

Role and Responsibilities:

• As a backend developer, your primary focus will be the development of all server-side systems
• A basic understanding of front-end technologies is necessary as well. You will test, secure and deploy your code
• Work experience on Node.js is a must along with a server-side framework like Express.js
• Strong proficiency in JavaScript
• Writing reusable, testable, and efficient code
• Experience and proficiency integrating with REST APIs
• Understanding of scalable computing systems, software architecture, data structures, and algorithms
• Experience in working with databases such as MongoDB, Redis, Elasticsearch, etc.
• AgileScrum development cycle understanding.

Skills Required:

• At least 2 years of experience developing backends using NodeJS should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
• Good knowledge of MongoDB(Must) & any other MySQL Database.
• Good knowledge of Redis, its data types, and their use cases.
• Experience developing and deploying REST APIs.
• Knowledge and working experience in Cloud environment - AWS or Azure
• Good knowledge of Unit Testing and available Test Frameworks.
• Should be a fast learner and a go-getter without any fear of trying out new things