
- 5+ years of experience in backend development with a strong focus on Node.js and TypeScript.
- Strong understanding of Node.js frameworks.
- Proficiency in TypeScript, with experience in building scalable applications.
- Solid understanding of RESTful API design, WebSocket, and asynchronous programming patterns.
- Experience with databases (SQL/NoSQL), including MySQL, MongoDB, Redis, etc.
- Familiarity with blockchain technologies and cryptocurrency exchanges is a plus.
- Strong knowledge of security principles and best practices for web applications.

About KoinBX
About
KoinBX is India's most trusted and fastest-growing crypto exchange, dedicated to providing a secure, compliant, and user-friendly platform for crypto enthusiasts and traders across India. As the most trusted and fastest-growing crypto exchange, KoinBX is your gateway to the future of finance, with a user-centric approach, advanced security measures, and an extensive array of cryptos. Our vision is to be the cornerstone of a future where every individual, regardless of background, discovers and harnesses the boundless opportunities of digital assets. KoinBX opens the doors to a future where digital assets play a transformative role in shaping the financial landscape. Our mission is to empower traders by offering a secure and trusted crypto trading platform that is easily accessible to all. We promise to be the gateway ushering in a future of limitless financial possibilities in the realm of digital assets. We provide advanced tools and confidence to navigate the Indian crypto market. We are proud to be 100% compliant with Indian regulations, safeguarding users' funds through robust security measures, including advanced encryption techniques and multi-factor authentication. With over 120 listed cryptos and 150+ active trading pairs, including cryptos like Bitcoin, Ethereum, and Ripple, we provide a comprehensive platform with an intuitive interface, real-time portfolio tracking, and timely price alerts for informed trading decisions. At KoinBX, we offer a wide suite of features designed to meet the diverse needs of both beginner and experienced traders. From instant KYC authentication to low trading fees and high liquidity, our platform is equipped with everything you need to trade cryptos. Join the 5 million+ strong crypto community on KoinBX and begin your crypto journey today. Whether you're a seasoned trader or just getting started, KoinBX is your trusted partner for all your cryptocurrency trading needs.
Candid answers by the company
KoinBX is your gateway to the future of finance, with a user-centric approach, advanced security measures, and an extensive array of cryptos.
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About the Role:
We are seeking a skilled and driven Backend Developer with expertise in Python (Django/FastAPI) and Node.js (TypeScript) to join our team. The ideal candidate will have experience in database design (RDBMS and NoSQL), REST API and GraphQL development, cloud services, and AI-driven applications. You will be responsible for designing and implementing scalable backend solutions, ensuring high performance, security, and reliability.
If you’re passionate about backend development, Generative AI, and data engineering, this is the role for you!
Key Responsibilities:
Backend Development:
- Develop and maintain robust, scalable backend services using Node.js (TypeScript) and Python (Django/FastAPI).
- Build APIs with REST and GraphQL, ensuring high security and performance.
- Implement authentication mechanisms such as OAuth2.0, SAML, JWT, MFA, and passkeys (optional).
- Research and integrate Generative AI (Gen AI) models and OpenAI APIs into backend systems.
Database & Data Engineering:
- Design and optimize schemas for both relational (PostgreSQL, YSQL) and NoSQL (DynamoDB, MongoDB) databases.
- Work with Redshift, BigQuery, and Snowflake to manage large-scale data processing.
- Develop ETL pipelines for data ingestion and transformation.
- Utilize Apache Airflow for workflow automation.
Cloud Services & Serverless Architecture:
- Work extensively with AWS Cloud services, and optionally Azure and GCP.
- Design and implement serverless architectures and event-driven systems using frameworks like AWS Lambda or equivalent on Azure/GCP.
- Configure and manage webhooks for event notifications and integrations.
- Integrate Apache Pulsar for real-time event streaming and messaging.
Programming & AI Integration:
- Apply design patterns, SOLID principles, and functional programming practices.
- Develop Python-based AI/ML solutions, leveraging Django/FastAPI for backend services.
- Manage AI/ML environments using Conda.
DevOps & Deployment:
- Utilize Docker and Kubernetes (K8s) for containerization and orchestration.
- Collaborate with DevOps teams for CI/CD pipelines and scalable deployments.
Tools & Utilities:
- Use Postman, Swagger, and cURL for API testing and documentation.
- Demonstrate strong knowledge of Unix commands for troubleshooting and development.
- Work with Git for versioning and code management.
Key Skills & Qualifications:
Must-Have:
✔ Proficiency in Python (Django/FastAPI) and Node.js (TypeScript).
✔ Experience with NestJS framework.
✔ Expertise in RDBMS and NoSQL database design and optimization.
✔ Hands-on experience with REST API and GraphQL development.
✔ Familiarity with authentication protocols such as OAuth2.0, SAML, JWT, and MFA.
✔ Strong understanding of AWS Cloud Services and Serverless Architecture.
✔ Experience with Gen AI, OpenAI APIs, and AI model integration.
✔ Hands-on knowledge of Python and Conda environments.
✔ Expertise in Redshift, BigQuery, Snowflake, and Apache Airflow for Data Engineering.
✔ Exposure to Apache Pulsar for event streaming.
Nice-to-Have:
➕ Exposure to Azure and GCP serverless frameworks.
➕ Knowledge of webhooks for event handling.
➕ Experience with passkeys as an authentication option.
Soft Skills:
✅ Problem-solving mindset with a passion for tackling complex challenges.
✅ Ability to learn and adapt to new tools, frameworks, and programming languages.
✅ Collaborative attitude and strong communication skills.
What We Offer:
💰 Competitive compensation and benefits package.
🚀 Opportunity to work with cutting-edge technologies in a fast-paced environment.
📚 A culture of learning, growth, and collaboration.
🌍 Exposure to large-scale systems, AI/ML integrations, and exciting technical challenges.
Brief:
We are pursuing a complex set of problems that involve building for an international audience and for an industry that has largely been service-centric. As an SDE at GradRight, you’ll bring an unmatched customer-centricity to your work, with a focus on building for the long term and large scale.
You’ll contribute to frameworks that enable flexible/scalable customer journeys and tying them with institutional knowledge to help us build the best experiences for students and our partners.
Responsibilities:
- Contribute to design discussions and decisions around building scalable and modular architecture
- Build clean, modular and scalable backend services
- Participate in sprint ceremonies and actively contribute to scaling the engineering organization from a process perspective
- Stay on top of the software engineering ecosystem and propose new technologies/methodologies that can be adopted
- Contribute to engineering hiring by conducting interviews
- Champion infrastructure as code mindset and encourage automation
- Manage and mentor a small team of junior engineers
Requirements:
- At least 4 years experience as an SDE, building large scale services
- Extensive experience in at least one programming language and ability to write maintainable, scalable and unit-testable code
- Strong understanding of software design principles and patterns
- Excellent command over data structures and algorithms
- Passion for solving complex problems
- Good understanding of various database technologies with strong opinions around their use cases
- Experience with performance monitoring and scaling backend services
- Experience with microservices and distributed systems in general
- Experience with team management
- Excellent written and verbal communication skills
Good to have:
- Experience working with node.js, MongoDB and Google Cloud
- Experience in CI/CD and cloud infrastructure management
- Worked on products that addressed an international audience
- Worked on products that scaled to millions of users
Responsibilities
- Clarify feature requirements with product team
- Design end to end feature flow
- Write scalable and bug free code
- Take care of test and deployment pipeline
- Maintaining the existing products
Skills And Qualification
- Must have experience with any scripting language (Javascript/NodeJS preferred)
- Experience with API-driven and highly scalable application is a plus
- Good knowledge of non relational DB (MongoDB preferred)
- Good with data structure and algorithms
- Good to have an experience with testing framework and CI/CD pipeline
Responsibilities:
- Design and develop large scale web applications using Node.js;
- Full-cycle projects and product development;
- Focus on software development and build Restful API's;
- Contribute to the overall software development life-cycle including requirements gathering, analysis, design, development, release/version control, testing, deployment, and support;
- Be a part of an agile-based team
Requirements:
- Exposure to ES6 knowledge of REST API Design and Development in Node.js.
- Basic Knowledge of Web Socket.
- Strong Knowledge of Javascript, Good exposure to Redis, MongoDB.
- Should be having a basic understanding of HTML5, CSS3, Bootstrap4.
We Offer:
- 5 Days Working
- Competitive Salary.
- Knowledge-Based Hierarchy
- Trending Technology Development
- Career Development Programs.
- Tremendous Scope of Responsibilities and KPIs Aligned with Individual and Organisational Goals.
- Exposure to working with a team size of 65+.
- Good Project Incentives and Rewards.
- Explore Incredible India!Workation Programmes with Airfare, Hotelstay.
- Work-Life Balance.
- Fantastic Team Spirit with Creative, Fun and Open Office Work Culture.
Your Responsibilities:
- Own the backend stack – Node.Js based, that powers our product
- Collaborate with Backend Developers (Python), Front-end developers, DevOps, and Data Scientists to design and implement new features
- Build and maintain several REST’ful Services/Endpoints which will be used both internally and externally in a Macroservices/Distributed services environment.
- Deploy and monitor the Services/Endpoints ensuring availability and scalability(ability to handle 100X traffic)
- Work on full project lifecycle starting from requirements gathering/understanding the problem to deploying and maintaining the project.
Skills that you bring Along:
- A minimum 8+ years of extensive work experience with Node.Js and related frameworks – particularly Express.Js.
- Extensive experience in designing and maintaining REST’ful API endpoints
- Extensive experience with databases such as Postgres and Mongo.
- Extensive experience in Cloud Infrastructure (AWS based) – e.g. AWS API Gateway, Lambda Functions etc.
- Experience with cache like Redis and/or Memory cache
- Good experience in Microservices/Macroservices or Event driven Architectures
- Good experience with design patterns
- Experience in writing advanced SQL-queries, good knowledge of PL/SQL
- Good understanding of Software Design Principles and domain-driven design
- Good experience with Continuous Delivery and Containerization(Docker)
- Ideally maintaining infrastructure-as-code using Terraform
- Excellent communication skills and the ability to explain complex topics in a simple manner


Roles & Responsibilities:
Build efficient, testable, and reusable PHP modules.
Solve complex performance problems and architectural challenges.
Integration of data storage solutions (may include databases, key-value stores, etc.).
Integration of User Interfaces developed by front end developers.
Skills and Qualifications:
· Must have a bachelor’s degree or above in Computer Science or in similar field.
· Minimum 4 years of experience in PHP web development.
· Strong knowledge of front-end technologies, such as JavaScript, HTML5, and CSS3
· Strong knowledge of PHP web frameworks (CodeIgniter, NodeJS)
· Experience in creating custom modules and themes.
· Expert knowledge in web architecture.
· Strong understanding of MVC design patterns and oops concept.
· Strong understanding of full synchronous behaviour of PHP.
· Experience with modern UI frameworks such as React, Angular or Vue.js
· Experience in MySQL and the ability to write SQL queries.
· Proficient understanding of source control management such as Git, SVN.
· Proficient understanding fundamental design principles behind a scalable application.
· Familiarity with limitations of PHP as a platform and its workarounds.
· Ability to create database schemes that represent and support business processes.
· Experience with Edu Tech companies will be preferred.
. Immediate Joiner Preferred.


Role Description:
As a Lead Backend Engineer , you will be responsible for designing and deploying scalable, highly available, and fault-tolerant systems for Radiusagent. Experience as a Tech Lead, managing tasks with back-end engineers while coding themselves will be a bonus point for the ideal candidate.
Responsibilities will include-
- You will contribute to all aspects of an agile software development lifecycle including design, architecture, development, documentation, testing, and operations.
- You will build cutting-edge scalable systems by writing simple and efficient code.
- You will push your design and architecture limits for new product development.
- You will ensure compliance with the build/release and configuration management process.
Skills needed:
- be able to design and build modules from ground up
- proficient in any one programming language out of php/golang/node/python/javascript/java/ruby and ability to pick up others
- experience with mysql/postgres/mongodb/couchdb
- experience with redis/memcached
- experience with rabbitmq / kafka
- experience in having written cron jobs, troubleshooting downtime
- ability to work with ambiguous requirements
- good understanding of OS concepts
Nice to haves:
- experience with managing VMs' on aws/gcp/digitalocean
- experience with docker/kubernetes
- experience elasticsearch or lucene


