Backend Developer

Job Title : Node.js Developer / Backend Developer

Experience : 4+ Years

Job Location : Mumbai – Andheri

Work Mode : Work From Office (5 Days a Week)

Job Type : Full-time Opportunity

Role Overview :

We are seeking an experienced Node.js / Backend Developer to design, develop, and maintain scalable backend systems.

The ideal candidate will have strong hands-on experience with Node.js, Nest.js, relational and NoSQL databases, and AWS cloud services.

You will work closely with frontend developers, DevOps, and product teams to deliver secure, high-performance, and reliable backend solutions.

Mandatory Skills : Node.js, Nest.js, MongoDB, PostgreSQL, AWS, REST API development, strong backend fundamentals.

Key Responsibilities :

• Design, develop, and maintain scalable backend applications using Node.js & Nest.js

• Build and manage RESTful APIs and backend services

• Work with MongoDB and PostgreSQL for efficient data storage and retrieval

• Develop cloud-ready applications and deploy them on AWS

• Ensure application performance, security, and scalability

• Write clean, well-documented, and maintainable code

• Participate in code reviews and follow best engineering practices

• Troubleshoot, debug, and optimize existing applications

• Collaborate with cross-functional teams for end-to-end delivery

Required Skills & Qualifications :

• 4+ years of experience in Backend / Node.js development

• Strong hands-on experience with Node.js and Nest.js

• Experience working with MongoDB and PostgreSQL

• Good understanding of AWS services (EC2, S3, RDS, etc.)

• Experience building RESTful APIs

• Understanding of backend architecture, design patterns, and best practices

• Strong problem-solving and debugging skills

• Familiarity with version control systems (Git)

Good-to-Have Skills :

• Experience with microservices architecture

• Knowledge of Docker and CI/CD pipelines

• Exposure to message queues or event-driven systems

• Basic understanding of frontend-backend integration

Responsibilities

• Develop, deploy, and maintain scalable products
• Participate in code reviews, and design discussions to ensure code quality and distribute knowledge
• Pair with team members for functional and non-functional requirements to write well-crafted, well-tested, readable, and maintainable code.
• Help to define roadmap and architecture based on technology and business needs
• Understand business requirements and work closely with the business to provide solutions

Eligibility

• Strong expertise in Backend Python Development with skills to create APIs, integrate the functions into UI, and store and retrieve data from a variety of databases.
• Strong experience with Django/Flask.
• Strong experience in writing unit tests.
• B.Tech/B.E (Preferred CSE)

About KAFQA

At Kafqa, we are building the next generation performing arts platform. Our mission is to transform how India learns, performs & watches performing arts. Our launch services consist of technology-enabled dance classes in our proprietary studios, production facilities, and social media broadcasting & competitions.

Founder & Team

The founder is Shariq Plasticwala. He is a graduate of IIT Bombay & Stanford GSB. He was part of the founding team of Amazon India where he played a key role for over 8 years. Among his roles at Amazon, he was the CEO of Amazon’s first joint venture in India and a Board Member of Amazon’s payments business. The other members of the founding team consisted of senior executives from Shiamak Davar & Byju’s.

Background

•   At least 6+ years experience in back-end development in a fast-paced environment, working in Python & Django Framework
• Should Have experience leading a team.
•   Deep understanding of technologies used in web products, including Rest APIs
•   Sound understanding of SQL/NoSQL databases such as PostgreSQL and MongoDB.
•   Deep familiarity with UNIX, major cloud platforms (AWS, Azure), DevOps.
•   Understanding of databases, and related tools, paradigms.

Opportunity

Here are some of the things you might have to do on any given day:

•   Developing APIs and endpoints for deployments of our product.
•   Infrastructure Development such as building databases, creating and maintaining automated jobs.
•   Build out the back-end to deploy and scale our product.

At nFerence Labs, the "Google of Biomedicine", we are building the world's first massive-scale platform for pharmaco-biomedical computing. Our platform is premised on using AI/Deep Learning (on clinical text, medical images, and other signals) and massive high-performance computing to help pharma companies perform faster and more efficient drug discovery, and also help early diagnosis of several key diseases.

We collaborate heavily with premier medical institutions such as the Mayo Clinic and build systems to get deep medical insights from patient information including patient notes and lab information, medical images, ECGs, etc. We are a well-funded company and are looking to grow on all fronts.

We are hiring an experienced backend staff engineer for our Pramana team. Our Digital Pathology-as-a-service venture, Pramana is an in-line quality assurance software suite which for the first time in the industry, provides confidence to the labs for the accuracy and applicability of their digital assets while supporting industry-standard image formats.

Pramana’s whole slide imaging system is built upon the strong hardware expertise of former Spectral Insights (that nference acquired in 2020) and the strong software expertise of nference. Modular systems with Robotic automation have allowed Pramana to reduce the reliance on several technical staff. This will significantly reduce the total costs of ownership and is a more transparent model for Pramana’s clients.

Must have

• 5+ years experience with solid backend/engineering experience in C++/ Python
• Knowledge of data structures and an eye for architecture.
• Solid CS fundamentals, fluent in multi-threaded and asynchronous programming, and a strong inclination for architecting at scale.
• Excellent technical design, problem-solving, debugging, and communication skills.
• Rapid prototyping worked on distributed systems at scale.
• Basic knowledge of SQL as well as NoSQL databases.
• Proficient in Golang/ Python, design, and concurrency patterns.

Good to have

• Proficient in writing unit tests and profiling and benchmarking golang applications
• Experience in maintaining protobuf contract
• Experience in working with GRPC and grace

Benefits:

• Be a part of the “Google of biomedicine” as recognized by the Washington Post
• Work with some of the brilliant minds of the world solving exciting real-world problems through Artificial Intelligence, Machine Learning, analytics and insights through triangulating unstructured and structured information from the biomedical literature as well as from large-scale molecular and real-world datasets.
• Our benefits package includes the best of what leading organizations provide, such as stock options, paid time off, healthcare insurance, gym/broadband reimbursement.

Responsibilities:-

• Produce clean, efficient code based on specifications
• Integrate software components and third-party programs
• Verify and deploy programs and systems
• Troubleshoot, debug and upgrade existing software
• Gather and evaluate user feedback
• Recommend and execute improvements
• Ensure highest standard of performance, quality, and responsiveness of the applications.

Requirements:-

• Overall 3-7 years of software engineering experience working with web applications and backend systems.
• At least 2 years of experience in production environment working with Ruby on Rails along with common libraries such as RSpec, Sidekiq, Redis.
• Strong understanding of concepts like MVC, ORM, and RESTful
• Strong understanding of Object Oriented Programming fundamentals.
• Strong understanding of server-side templating languages like SLIM and CSS pre-processors like SASS.
• Basic understanding of front-end technologies such as JavaScript, HTML5, and CSS3.
• Strong experience working with Linux like Operating Systems and shell environments like Bash, ZSH.
• Strong knowledge of integrating multiple databases into one system.
• Basic understanding of systems architecture and fundamental design principles behind a scalable web application.
• Ability to understand business requirements, derive database schemas and translate them into technical specifications and code.
• Strong hands on experience of Relation Databases like PostgreSQL, MySQL with ability of benchmarking and performance optimisation.
• Strong knowledge of any NoSQL database like MongoDB.
• Strong experience practicing TDD and writing test cases to achieve highest code coverage.
• Experience working with search engines like Elasticsearch, Solr is a plus.
• Experience integrating third party software and payment gateways is a plus.
• Experience deploying applications to cloud and setting up CI/CD is a plus.
• Experience building container images using tools like Docker is a plus.
• Experience with any popular JavaScript frameworks like React JS, Angular JS is a plus.
• Ability to learn new languages and technologies.

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. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.

• Integration of user-facing elements developed by front-end developers with server side logic
• Writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Implementation of security and data protection

• Strong proficiency with JavaScript & OOPS
• Knowledge of Node.js and frameworks available for it 
• Understanding the nature of asynchronous programming and its quirks and workarounds
• 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
• Creating database schemas that represent and support business processes
• Implementing automated testing platforms and unit tests
• Proficient understanding of code versioning tools, such as Git
• Knowledge of AWS will be preferable

• Utilize established development tools, guidelines and conventions including but not limited to ASP.NET, SQL Server, HTML, CSS, JavaScript, and C#/VB.NET
• Prepare and maintain code for various .Net applications and resolve any defects in systems.
• Prepare test-based applications for various .Net applications
• Enhance existing systems by analyzing business objectives, preparing an action plan and identifying areas for modification and improvement

• Manage defect tracking system and resolve all issues and prepare update for systems
• Investigate and develop skills in new technologies
• Create technical specifications and test plans
• Monitor everyday activities of system and provide require support

• Required experience in .Net Core 2.2 and above, Web API, EF, AWS or Azure Cloud
• Familiarity with the ASP.NET framework, SQL Server and design/architectural patterns (e.g. Model-View-Controller (MVC))
• Knowledge of at least one of the .NET languages (e.g. C#, Visual Basic .NET) and HTML5/CSS3
• Familiarity with architecture styles/APIs (REST, RPC)
• Snaplogic (both ground and cloud plex ) or Biztalk ( basic administration , simple xlt translations, and Api management ) or any other similar tool
• Update to .net 50 and Microsoft CORE 30 general coding practices
• Visual Studio use for C#
• Shared library through Nugget
• Unit Test / Test driven methods (use of Xunit and MOCK )
• Concepts of “;” service threading, caching, injection, NTier and entity 
• GIT repository (Gitflow branching strategies )
• Azure DevOps pull requests, commitments and Task usage
• SQL artifact writing (sprocs, tables, triggers , indexes, FKs ,and PKs)
• SQL understanding of relational database models

• Should have good problem-solving abilities
• Should be able to troubleshoot issues and determine the cause of a plan’s success or failure
• Should keep up to date with changes in the market and technology that would affect
• Good interpersonal and communication skills
• Comfortable to work as per client requirements/time zones
• Should possess strong team handling experience

At Kyt, we are building an online-first, global academy focused on extracurricular learning for kids. Our mission is to ensure that every kid around the world gets access to holistic education while being able to learn using content, tools and technologies that teaches them concepts - some even better than offline. Bringing in technology as a differentiator to teach kids concepts and help them practice is key to our product development path.

• Experience of 6+ years across product based companies 

• Should have worked on building B2C products. Having experience in building edtech products would be a major plus.
• Should be an  avid programmer with great problem solving skills.
• Should have a great grasp over NodeJs/Typescript/ AWS microservices
• Should  have experience in building scalable server-side systems. Should have significant experience in cloud infrastructure and designing databases.
• Should have knowledge of software architecture, system thinking and design patterns.