Job Overview :
We are looking for a skilled Node.js Developer to join our team. You will be responsible for developing and maintaining server-side applications, APIs, and services, ensuring high performance, scalability, and reliability.
Responsibility :
-Develop Backend Services: Build and maintain server-side applications using Node.js.
-API Integration: Develop and integrate RESTful APIs.
-Database Management: Work with databases (SQL/NoSQL) for efficient data storage and access.
-Optimize Performance: Ensure the application is optimized for speed and scalability.
-Debugging and Troubleshooting: Identify and resolve issues in the backend system.
-Collaboration: Work with front-end developers to ensure seamless integration between server- side and client-side systems.
Education :
- Bachelor’s degree in Computer Science, Engineering, or a related field.
Ready to take the next step in your career? Submit your application today and become a part of our innovative team at Rayvat (Jenya) Outsourcing. We look forward to meeting you!

About Rayvat Outsourcing
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Instrive is a Chennai-based start-up that provides high-quality Dev-ops solutions for clients worldwide. We strive to solve problems and create value in this increasingly digital world. Instrive was founded to create high-quality products and deliver great user experiences worldwide.
Several products are being developed for both in-house purposes and our overseas clients, and we are actively expanding our team of talented professionals.
We are constantly pushing the boundaries of what is possible, and our employees have the opportunity to be at the forefront of this innovation. Our flat organisational structure encourages open communication and idea-sharing and provides ample opportunities for employees to take ownership of their work and make a real impact.
As part of our ambitious product roadmap, we need senior developers with experience in NodeJS.
Your primary responsibility will be to develop UI components, processes, documentation, and an organisation-wide style guide that can be reused across all applications.
Roles and Responsibilities:
- Develop and maintain web applications using Node.js, Express, and related technologies
- Write clean, efficient, and well-documented code.
- Collaborate with the team to design and implement new features and functionality
- Troubleshoot and debug issues to ensure a smooth user experience
- Optimize application performance and scalability
- Participate in code reviews and ensure adherence to coding standards
- Keep up-to-date with the latest technologies and industry trends
- Work with other developers, project managers, and stakeholders to understand project requirements and deliver high-quality solutions
Desired Candidate Profile:
- 3-5 years of experience in web application development using Node.js
- Strong proficiency in JavaScript, including experience with popular libraries and frameworks such as Express.js, Nest.js, and Mongoose
- Experience with front-end technologies such as HTML, CSS, and JavaScript
- Knowledge of web protocols and technologies such as HTTP, REST, and WebSockets
- Experience with NoSQL databases such as MongoDB and SQL databases like MySQL, SQLite, PostgreSQL
- Experience with Git and version control
- Familiarity with Agile development methodologies
- Strong problem-solving and analytical skills
- Excellent communication skills, both verbal and written
- Adaptability to rapid change
Good to have:
- Experience with GraphQL and Apollo
- Familiarity with AWS, Azure, or Google Cloud Platform
- Experience with containerisation technologies such as Docker and Kubernetes
- Experience with unit testing, integration testing, and end-to-end testing frameworks
- Knowledge of microservices architecture and event-driven architecture
- Familiarity with cloud-based development tools such as AWS Lambda and Azure Functions
- Familiarity with load balancing, caching, and performance optimisation techniques
- Experience working with remote teams and communicating effectively with remote stakeholders.
Perks and Benefits:
By working at the intersection of product, strategy, and technology, you will learn how to make strategic decisions, prioritise product features against business objectives, and put the user first.
In addition to the exciting work, Instrive offers our employees a comprehensive benefits package. This includes health insurance, paid time off, and professional development and training opportunities, so our employees can continue to grow and advance in their careers.
We focus on fostering a positive and collaborative work environment and are committed to helping our employees reach their full potential.
You will make a meaningful impact and create lasting connections with our outstanding team, no matter where your career takes you.
Senior Software Engineer (Java)
We are looking for a Senior Software Engineer - Java
If you're a creative problem solver who is eager to develop amazing products and hungry for a new adventure, a word class workplace is waiting for you in the heart of Kolkata.
An exhaustive list of expectations :
✓ Design and implement cutting-edge applications
✓ Participate in code reviews and application debugging and diagnosis.
✓ Practice modern software development methodologies such as continuous delivery, and scrum.
✓ Collaborate with product managers and engineers to build scalable systems enabling innovative ordering experiences.
Requirements -
✓ Knowledge and 5+ years of experience in developing Java applications
✓ A completed technical degree in Computer Science or any related fields.
✓ Profound knowledge and working experience with Java Frameworks (Springboot) and SQL databases.
✓ Solid experience in the design and implementation of Restful APIs and design patterns.
✓ Strong knowledge in Core Java, REST , Spring Framework, Spring Boot Microservice , JPA (e.g. Hibernate, OpenJPA, etc.) , Docker, Jenkins, ELK Stack
✓ Experience working with NoSQL Technologies and interest in Elasticsearch, and Microservices architectures.
✓ Curiosity, out of box problem-solving abilities, and an eye for detail.
✓ Passion for clean code
What really makes us interested in you - You are self-motivated. You think like an entrepreneur, constantly innovating and driving positive change, but more importantly, you consistently deliver stupendous results.
Number of position – 3
Job Location – kolkata, Sector 5
As one of our Backend Software Engineers, you will be part of the team responsible for the development of all server-side logic, the definition and maintenance of the database, and ensuring high performance and responsiveness to requests from the front-end developers.
What will you be engaged in?
Collaborate with key internal stakeholders to determine how to scalable design backend systems and APIs to meet their needs
Architect, develop and operate services deployed to millions of users
Collaborate with the DevOps team for the necessary infrastructure needed for services to run on the cloud platform
Write backend services and Restful APIs
Be in charge of data migration, transformation, and scripting
Write reusable, testable, and efficient code
Design and implementation of low-latency, high-availability, scalability, and performant applications
Implement security and data protection
Manage web apps that impact millions of users
What do we expect from you?
3 + years of experience building large-scale backend systems
Knowledge of MVC concepts
Knowledge of web applications systems
A good understanding of data pipelines, data lakes, and data ingestion is Plus
Strong understanding of Database management (MSSQL, SQL)
Strong understanding of NoSQL Database (MongoDB)
Strong understanding of RESTful API
Understanding of JavaScript and Typescripts
Understanding of Node.js frameworks and Nest JS Framework
Passion for building high performance, high throughput, low latency frameworks
Problem-solving mindset
Understanding of GIT Source code
Good at JavaScript and passionate about solving challenges using JavaScript.
Good Understanding of Pub/SUB (Kafka, RabbitMQ etc.)
Fintech Industry experience is plus



.NET C# developer provides custom web application development using the .NET Framework, C#, http://VB.NET">VB.NET, http://ASP.NET">ASP.NET, SQL Server and other advanced components of Microsoft technology and provide training to programmer analysts who support the web services manager' responsibilities.
Responsibilities:
The tool development also involves working with SQL queries and web front end
Designing, developing, and testing web applications with .Net HTML, CSS and other technologies
Design and development of software applications (primarily web based) used in various areas of the bank (such as Loans processing, Treasury, Middle Office )
Manages the architecture, design, and coding of software for TFI from concept to finished product, in order to answer the needs of the Strategies, Sales, and Trading departments
Consults with end users within the Strategies, Sales, and Trading departments to identify where technology can automate current processes to enhance revenues and cut cost
Maintains currency in technical skills and all relevant fixed income industry sector factors
May lead the work of others and provide ideas which help to enhance TFI software applications
Software design & development principles such as SOLID, Domain-Driven-Design and Object-Oriented Development
ORM frameworks, particularly the Entity Framework
Managing source code with Git, including Gitlow Workflow

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.

- Architect new systems and improve existing ones by instrumenting best practices and technologies.
- Identify and build automated tools for release management, deployment, monitoring and reporting
- Identity and implement latest technologies and frameworks for application system stack, deployments, automation, capacity management, resource orchestration and availability.
- Responsible for fixing support escalation cases and conducting post-incident reviews / Root Cause Analysis.
Job Responsibilities:
- Create standard RESTful APIs
- Define API models
- Define Database models
- Communicate with other teams about breaking changes
- Maintain code quality
- Optimizing services for maximum performance
Requirements: 5+ years of work experience
- Advanced understanding of SQL ( NoSQL is a plus)
- Proficient understanding of Node.js
- Willingness to learn new ways of doing things
- Experience exposing functionality through RESTful APIs and GraphQL
- Perform performance tuning and query optimization using native SQL Server tools
- Ensure performance, security, and availability of databases
- Should be familiar with the AWS ecosystem and services
- Experience in deployment of scalable, low-latency, and highly available distributed systems
- Experience with Scrum/Agile development

Key Responsibilities
- Build and create Credflow Product - Do development on our tech Stack
- Understand requirements from the product manager and sometimes talk to customers to understand the exact requirement and develop insights.
- Maintain the product and optimize over time for performance
- Identify needs of the stakeholders and work with technology and management team to build future timeline of products and features
- Be the go-to person for all technology related requirements, queries, discussion etc
- Develop a complete analytics framework as the product evolves.
What we seek
- We are looking for someone who is a hustler and is deeply passionate about solving technology-led complex problems
- The person should be able to take ownership of work in a highly challenging and dynamic startup environment
Benefits
- Chance to be with the right team, at the right time
- Work as part of the core team and experience the aspects of growing a business exponentially
- Get a deep understanding of the Fintech domain and unleash your potential to create an impact.
Qualifications and skills
- Undergraduate/Graduate degree from an engineering college
- Has full stack proficiency, managing large amounts of data and prior exposure to backend, web frontend, mobile apps etc.
- Full Stack Proficiency on Node.JS, React.JS
- SQL
- In memory data stores like Redis
- Experience in AWS (preferable)
Experience
2-4 years of experience
Preference
Previous experience in a startup or as an entrepreneur
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

