
Lead Backend Developer Javascript
at Our client company is into Ecommerce(QS1)
- 5-10 years of experience in building API services using NodeJS Express and related frameworks
- Expert level understanding of NodeJS asynchronous runtime
- Expert level understanding of Javascript concepts on callbacks and closures
- Experience with Postgres, NoSQL, Redis, and Firebase real-time database
- Experience with AWS services like Elastic Beanstalk, Cloudfront, S3, EC2, Lambda, API Gateway, SQS, etc
- Understanding of patterns and techniques for building scalable back-end infrastructure including caching, rate limiting, authentication, and authorization schemes.
- Experience in building highly scalable and high throughput services with millisecond response times
- Experience working in a collaborative team environment
- Excellent communication & interpersonal skills
- Willingness to learn and pick up new technology along with patience to mentor
Bonus skills –
- Experience with Elastic Search, Puppeteer
- Experience writing unit test

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- Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience)
- Proven 2 to 12 years of professional experience in Node.js development
- Strong proficiency in JavaScript, including ES6+ syntax
- Expertise in designing and developing RESTful APIs and microservices architecture
- Experience with popular Node.js frameworks such as Express.js, Nest.js, or Hapi.js
- Experience in modern front-end technologies (e.g., HTML, CSS, JavaScript frameworks like React, Angular, or Vue.js)
- Solid understanding of asynchronous programming, event-driven architecture, and design patterns
- Extensive knowledge of database systems, both SQL and NoSQL (e.g., MongoDB, PostgreSQL, MySQL)
- Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform
- Familiarity with containerization technologies (e.g., Docker, Kubernetes)



- Create, maintain, test, and fix back-end infrastructure, including databases, data integration, API, core application logic, and other processes that need to be done behind the curtain. Since the job responsibilities can be performed remotely, we simply want our back-end developer to analyze user needs and improve user experience according.
- proficient in server-side development and optimization of data, including database creation and management and debugging
- Integrate data from various back-end services and databases
- Create and maintain software documentation
- Create user-friendly and intuitive interfaces
- Create and analyze reliable and secure back-end functionality
- Maintain, expand, and scale designed database
- Collaborate with front-end developers and web designers to match visual design intent.
- Design RESTful APIs
- Experience working with relational database like mysql/oracle, Mangodb
Our backend (NodeJS) team is passionate about technology, and we love building scalable web and mobile solutions keeping performance in mind. We're looking for a full stack developer that has experience developing a variety of Web Apps and REST API using the NodeJS stack.
(Along with strong backend expertise, needs good understanding on frontend tech stack to give support to frontend developer)
Role + Responsibilities:
- Review PR’s and provide appropriate comments.
- Help team in debugging the issues and provide proper solution.
- Participate in architecture, design and sprint planning of the projects.
- Write reusable, testable, maintainable and scalable code with Unit Testing.
- Implementation of security and data protection throughout the project.
- Implementation on Design Patterns like TDD & BDD.
Person Specification and Qualifications:
- Fluency in written and verbal communication.
- Experience developing highly scalable services and APIs in multiple protocols.
- Knowledge of data modelling and database performance optimization in SQL & No SQL databases.
- Must have worked with PostgreSQL and MongoDB using TypeORM, Sequalize or Knex.
- Strong experience with core concepts of JS & TS.
- Experience working with Frameworks like NestJS, LoopBack, Express, and other Framework in Typescript.
- Must have worked with unit testing libraries like Jest, Mocha and Chai.
- Good knowledge of code versioning (git or bitbucket).
- Hands on experience with Docker for building micro service.
Plus, points if you're familiar with the following:
- Experience with deployment and CI/CD.
- Knowledge of GraphQL and its libraries like Apollo and Prisma.
- Knowledge of SDK integration (social media SDK like Facebook, Google, etc. and Cloud services like AWS, Azure and Google).
- Good experience with Linux commands and basic server configuration.
- Knowledge of document, key/value or other non-relational database systems such as Elastic Search, Redis, DynamoDB.
- Experience with queuing protocols.



- Challenge technical decisions and web service designs and provide inputs for improvement
- Provide qualified code (tested and documented)
- Fix issues that arise from testing/customers
- Create or update all the relevant and required technical documents (design, architecture, )
- Follow quality development rules and recommendations (unitary test, change management, build management, Software factory…)
- Perform code reviews and suggest improvements
- Work in Agile mode and Test Driven development process
- Collaborate and work closely with all stakeholders
- Hardcore developers who can write performance-based quality code and drive code
- Preferred: Java1.8, Junit, Springboot, Dropwizard, RabbitMQ, Jenkins jobs, NoSQL DB (MongoDB, Neo4j), Docker, and DevOps (Optional: Python, AWS)
- Knowledge about Secure coding guidelines, Sonarqube, Configuration Management (Perforce), Jira
- MUST have experience in Scrum/Agile SDLC
- Value Add – experience on the server side in IPTV/OTT/STB
Work as a member of a team responsible for developing a HIPAA compliant secure care coordination platform in accordance with established processes. You will apply your knowledge of building scalable, distributed applications and have the opportunity to work with new technologies & frameworks such as Spring Cloud Netflix, AWS, Azure, NoSQL DB.
Essential Functions include but are not limited to the following.
You will be expected to:
- Contribute to all phases in the software lifecycle – requirements analysis, solution design, development, and deployment
- Maintain high quality standards for the work undertaken and be responsible for the quality of deliverables
- Ensure assigned projects are developed in accordance with established engineering processes, adhering to scope, schedule constraints and agile project plans
- Guide/mentor the less experienced team members
- Participate in code reviews
- Work effectively as part of a distributed team
- Document the features worked by him/her
Key technical expertise areas expected for this role:
Strong programming skills in Java 8(+) with clear understanding of Object-Oriented and Functional programming.
- Experience on REST API Programming based on a Microservices Architecture
- Good Understanding of Databases (MySQL & Mongo) and proficiency in database schema designing & writing efficient SQL Queries
- Strong troubleshooting skills
- Demonstrable ability to learn new programming languages and frameworks quickly
- Experience with distributed systems with specific focus on security and scalability
- Experience with modern cloud technologies such as AWS or Azure
Additional areas that would add value:
- Spring Cloud
- Experience working with AES 256 based encryption algorithms
- Strong understanding of Design Patterns & their application in system design
- Using DevOps & Infrastructure tooling such as GoCD/Jenkins, Git
- Experience working on projects, preferably in the healthcare domain
- Experience working with Virtualization and Containerization technologies including Docker, Kubernetes.
- Automated Unit/Integration testing
- Experience working with Linux and Shell scripting
- Frontend web development with JavaScript frameworks like AngularJS
- Test Driven & Behavior Driven Development
- Experience working in Agile Scrum/Kanban methodologies
Education and Experience:
- Bachelors or Master’s in Computer Science or related fields.
- 5+ years of experience


We are looking for a React Native developer interested in building mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.
Responsibilities
- Leverage native APIs for deep integrations with both iOS and Android platforms.
- Diagnose and fix bugs and performance bottlenecks for performance that feels native.
- Maintain code and write automated tests to ensure the product is of the highest quality.
- Transition existing iOS and Android apps to React Native.
This role is for 1 month where the person will be working from Client site in Paris to understand the system architecture and documenting them. Contract extension for this role will be purely on the performance of individual.
Since the requirement is immediate and critical, we need someone who can join us soon and travel to Paris in December
- Hands on experience handling multiple data sources/datasets
- experience in data/BI architect role
- Expert on SSIS, SSRS, SSAS
- Should have knowledge writing MDX queries
- Technical document preparation
- Should have excellent communication
- Process oriented
- Strong project management
- Should be able to think Out of the Box and provide ideas to have better solutions
- Outstanding team player with positive attitude

