MERN Stack Developer

Job Title : Senior Full Stack Developer (React.js, Node.js, C#, .NET)

Experience : 8+ Years

Location : Gurgaon, Haryana

Work Mode : Hybrid (As per Samsung Policy)

Shift : 07:00 PM – 04:00 AM (IST)

Job Summary :

We are looking for a Senior Full Stack Developer with strong expertise in C#, .NET Core, React.js, NestJS, Node.js, SQL Server, and SSO integrations to build and maintain enterprise-grade applications in a Windows Server environment.

Mandatory Tech Stack :

Frontend : React.js, Redux Toolkit (RTK)

Backend : C#, .NET Core, Node.js, NestJS

Database : SQL Server, TypeORM

Authentication : Active Directory, OIDC, SAML

Environment : Windows Server

Key Responsibilities :

• Develop scalable web applications using React.js, C#, .NET Core, Node.js, and NestJS.
• Build and maintain REST/GraphQL APIs and backend services.
• Design and optimize SQL Server databases, T-SQL queries, and TypeORM mappings.
• Implement and manage SSO solutions (Active Directory, OIDC, SAML).
• Deploy and support applications on Windows Server environments.
• Conduct code reviews and follow best development practices.

Required Skills :

• 8+ years of software development experience.
• Strong hands-on experience in C#, .NET Core/ASP.NET Core, React.js, NestJS, and Node.js.
• Expertise in Redux Toolkit (RTK), RTK Query, TypeORM, and SQL Server.
• Experience with GraphQL, REST APIs, Windows Server, and SSO integrations.
• Good understanding of application architecture, performance optimization, and security.

Software Development Engineer (Associate/Intern)

Location: Remote (India preferred) | Type: Full-time | Compensation: Competitive salary + early-stage stock options

🧠 About Alpha

Modern revenue teams juggle 10+ point-solutions. Alpha unifies them into an agent-powered platform that plans, executes, and optimises GTM campaigns—so every touch happens on the right channel, at the right time, with the right context.

Alpha is building the world’s most intuitive AI stack for revenue teams —to engage, convert & scale revenue with an AI powered GTM team. l

Our mission is to make AI not just accessible, but dependable and truly useful.

We’re early, funded, and building with urgency. Join us to help define what work looks like when AI works for you.

🔧 What You’ll Do

You’ll lead the development of our AI GTM platform and underlying AI agents to power seamless multi-channel GTMs.

This is a hybrid UX-engineering role: you’ll translate high-level user journeys into interfaces that feel clear, powerful, and trustworthy.

Your responsibilities:

• Design & implement end-to-end features across React-TS/Next.js, Node.js, Postgres, Redis, and NestJs micro-services for LLM agents.
• Build & document scalable GraphQL / REST APIs that expose our data model (Company, Person, Campaign, Sequence, Asset, ActivityRecord, InferenceSnippet).
• Integrate third-party APIs (CRM, email, ads, CMS) and maintain data sync reliability > 98 %.
• Implement the dynamic agent flow builder with configurable steps, HITL checkpoints, and audit trails.
• Instrument product analytics, error tracking, and CI pipelines for fast feedback and safe releases.
• Work directly with the founder on product scoping, technical roadmap, and hiring pipeline.

✅ What We’re Looking For

• 1–3 years experience building polished web apps (React, Vue, or similar)
• Strong eye for design fidelity, UX decisions, and motion
• Experience integrating frontend with backend APIs and managing state
• Experience with visual builders, workflow editors, or schema UIs is a big plus
• You love taking complex systems and making them feel simple

💎 What You’ll Get

• Competitive salary + high-leverage early equity
• Ownership of user experience at the most critical phase
• A tight feedback loop with real users from Day 1
• Freedom to shape UI decisions, patterns, and performance for the long haul

We want a highly experienced engineer with expertise as follows:

● React Native: very high level of proficiency; this should be a core strength

● JavaScript / TypeScript: very high level of proficiency

● React: high proficiency, with strong experience building customer-facing web

applications

● Mobile application development: very strong understanding of app architecture,

performance, debugging, reliability, and release quality

● Python / backend systems: medium to high proficiency; comfortable contributing to

APIs and backend workflows

● Performance optimization: strong experience improving responsiveness and efficiency

across application and processing layers

● Database design and caching: solid experience designing efficient data access

patterns and improving performance of critical operations

● AWS / S3 / async pipelines: working experience, especially in systems involving

uploads, processing, and media workflows

● Developer tools and local development workflows: strong experience improving

engineering productivity and reducing friction in how teams build, test, and ship

● Swift / native iOS development: nice to have, but not required

● Product thinking / customer empathy: strong ability to understand user needs, work

through ambiguity, and help shape product direction

The ideal candidate has strong experience building polished, production-quality applications in

React Native and React, and is comfortable contributing across backend systems where

needed. This person should be excited to understand customer workflows closely and help

shape product direction, not just execute tickets.

What you’ll do

You will work on high-impact product and platform problems, including:

● Building and improving the core React Native application used by customers in the field

● Developing mobile product experiences that help customers capture, review, and act on

ergonomics risk insights

● Building frontend UI for critical new features in the web application using React

● Improving app performance, responsiveness, reliability, and release quality across

mobile and web

● Improving the speed and reliability of video ingestion and re-encoding into web-playable

formats

● Implementing intelligent caching and data access patterns to speed up critical database

operations

● Improving developer tools and local development workflows across mobile, web, and

backend systems

● Contributing to backend services and APIs that power our mobile and web experiences

● Supporting native iOS integrations where needed

● Working closely with product, customers, and the broader engineering team to turn

real-world operational pain points into shipped product improvements

Responsibilities

● Own major product features end-to-end, from product thinking through implementation

and release

● Build high-quality, performant mobile experiences using React Native

● Build intuitive, reliable web experiences using React

● Contribute to backend services and APIs in Python that support product workflows

● Improve app quality through better testing, debugging, observability, and engineering

workflows

● Identify and resolve bottlenecks in video, processing, storage, and database systems

that affect product performance

● Help define engineering best practices for application quality, release processes, and

developer productivity

● Collaborate cross-functionally with product and customer-facing teams to prioritize the

right problems

● Raise the technical bar through strong code reviews, debugging discipline, and

pragmatic architectural decisions

Must-have qualifications

●8-14 years of professional software engineering experience

● Strong hands-on expertise in React Native

● Strong hands-on expertise in JavaScript/TypeScript

● Strong experience with React

● Experience building and shipping production-quality mobile applications

● Strong understanding of mobile architecture, app lifecycle, performance, and debugging

● Experience building customer-facing web applications

● Experience working with backend APIs and full-stack product development

● Experience improving developer productivity through tools, local development setups,

testing workflows, or internal engineering systems

● Strong product sense and ability to translate ambiguous customer needs into scoped

technical solutions

● Excellent communication skills and a high degree of ownership

About Techjays

At Techjays, we build production-grade AI platforms for global clients. We operate at the intersection of backend engineering, distributed systems, and applied AI — delivering secure, scalable, and enterprise-ready intelligent systems. Our team has built and scaled products at Google, Akamai, NetApp, ADP, Cognizant, and Capgemini.

About the Role

This is not a feature-delivery role. We are looking for an AI Lead who can architect, own, and scale intelligent backend systems end-to-end. You will drive both technical direction and execution — working across LLM integrations, RAG pipelines, agentic AI workflows, and cloud-native backend systems for global clients.

What You'll Do

• Architect and scale backend systems powering AI-driven applications
• Design and implement RAG pipelines, AI agents, and LLM integrations
• Own systems end-to-end — from architecture to deployment and scaling
• Integrate and optimize LLMs (Claude, GPT, Gemini) for real-world production use cases
• Build high-performance distributed systems with observability and cost efficiency
• Lead backend and AI initiatives with strong technical ownership
• Mentor engineers and raise the technical bar across teams
• Collaborate with product and AI teams to deliver AI-native solutions

What We're Looking For

• 6–10 years of strong backend engineering experience
• Hands-on expertise in Python (FastAPI / Django / Flask)
• Deep understanding of Generative AI and LLM-based systems
• Strong experience with RAG pipelines and Vector Databases (Pinecone, FAISS, ChromaDB, Weaviate)
• Solid knowledge of Agentic AI — building autonomous agents and multi-agent workflows
• Proficiency in AWS or GCP in production environments
• Experience with distributed systems, microservices, and system design
• Strong grasp of Data Structures, Algorithms, and Design Patterns
• Familiarity with WebSockets, Git, Linux/Unix, and CI/CD

Nice to Have

• Experience with Anthropic Claude API and Claude Code
• Familiarity with real-time data systems or streaming (Kafka, etc.)
• MLOps and AI system lifecycle experience
• Optimizing AI systems for latency, cost, and scalability

Who You Are

• You think in systems, not just features
• You take full ownership of what you build
• You are comfortable navigating fast-moving, ambiguous environments
• You stay updated with the latest in Generative AI and backend technologies
• Strong communicator who can collaborate across teams and global clients

What We Offer

• Competitive compensation (Best in Industry)
• Work on production-grade AI systems used by global clients
• Exposure to cutting-edge AI tools and frameworks
• A culture that values clarity, integrity, and continuous growth

About Cognida.ai:

Our Purpose is to boost your competitive advantage using AI and Analytics.

We Deliver tangible business impact with data-driven insights powered by AI. Drive revenue growth, increase profitability and improve operational efficiencies.

We Are technologists with keen business acumen - Forever curious, always on the front lines of technological advancements. Applying our latest learnings, and tools to solve your everyday business challenges.

We Believe the power of AI should not be the exclusive preserve of the few. Every business, regardless of its size or sector deserves the opportunity to harness the power of AI to make better decisions and drive business value.

We See a world where our AI and Analytics solutions democratise decision intelligence for all businesses. With Cognida.ai, our motto is ‘No enterprise left behind’.

Position: Python Fullstack Architect

Location: Hyderabad

Job Summary

We’re seeking a seasoned Python Fullstack Architect with 15+ years of experience to lead solution design, mentor teams, and drive technical excellence across projects. You'll work closely with stakeholders, contribute to architecture governance, and integrate modern technologies across the stack.

Key Responsibilities

• Design and review Python-based fullstack solution architectures.
• Guide development teams on best practices, modern frameworks, and cloud-native patterns.
• Engage with clients to translate business needs into scalable technical solutions.
• Stay current with tech trends and contribute to internal innovation initiatives.

Required Skills

• Strong expertise in Python (Django/Flask/FastAPI) and frontend frameworks (React, Angular, etc.).
• Cloud experience (AWS, Azure, or GCP) and DevOps/CI-CD setup.
• Familiarity with enterprise tools: RabbitMQ, Kafka, OAuth2, PostgreSQL, MongoDB.
• Solid understanding of microservices, API design, batch/stream processing.
• Strong leadership, mentoring, and architectural problem-solving skills.

Overview

Adesso India specialises in optimization of core business processes for organizations. Our focus is on providing state-of-the-art solutions that streamline operations and elevate productivity to new heights.

Comprised of a team of industry experts and experienced technology professionals, we ensure that our software development and implementations are reliable, robust, and seamlessly integrated with the latest technologies. By leveraging our extensive knowledge and skills, we empower businesses to achieve their objectives efficiently and effectively.

Job description

The client’s department DPS, Digital People Solutions, offers a sophisticated portfolio of IT applications, providing a strong foundation for professional and efficient People & Organization (P&O) and Business Management, both globally and locally, for a well-known German company listed on the DAX-40 index, which includes the 40 largest and most liquid companies on the Frankfurt Stock Exchange.

We are seeking talented Java Application Developers to join our dynamic DPS team. In this role, you will design and implement change requests for existing applications or develop new projects using Jakarta EE (Java Enterprise Technologies) and Angular for the frontend. Your responsibilities will include end-to-end process mapping within the HR application landscape, analyzing developed functionalities, and addressing potential issues.

As part of our dynamic international cross-functional team you will be responsible for the design, development and deployment of modern high quality software solutions and applications as an experienced and skilled Full-stack developer. 

Responsibilities:

Design, develop, and maintain the application.

Write clean, efficient, and reusable code.

Implement new features and functionality based on business requirements.

Participate in system and application architecture discussions.

Create technical designs and specifications for new features or enhancements.

Write and execute unit tests to ensure code quality.

Debug and resolve technical issues and software defects.

Conduct code reviews to ensure adherence to best practices.

Identify and fix vulnerabilities to ensure application integrity.

Working with other developers to ensure seamless integration backend and frontend elements.

Collaborating with DevOps teams for deployment and scaling.

Requirements:

Bachelor’s degree in computer science or information technology, or a related field.

Proven experience as a skilled Full-stack developer. Experience in Utilities / Energy domain is appreciated.

Strong experience with Java (Springboot), AWS / Azure or GCP, GitLab and Angular and / or React. Additional technologies like Python, Go, Kotlin, Rust or similar are welcome

Excellent problem-solving and debugging skills. 

Strong communication and collaboration abilities to work effectively in a team environment.

Skills & Requirements

Java, Spring Boot, Jakarta EE, Angular, React, AWS, Azure, GCP, GitLab, Python, Go, Kotlin, Rust, Full-stack Development, Unit Testing, Debugging, Code Review, DevOps, Software Architecture, Microservices, HR Applications, Cloud Computing, Frontend Development, Backend Development, System Integration, Technical Design, Deployment, Problem-Solving, Communication, Collaboration.

Roles and Responsibilities

• Architecting and building server and browser-based systems that integrate with our hardware.
• Creating a great user experience by building both back-end infrastructure and user-facing features.
• Performing code reviews and having your code reviewed by peers.
• Creating technical requirements, software design specifications, and other architectural documentation.
• Work closely with UX/UI designers to translate design concepts into functional user interfaces, ensuring a smooth user experience. 
• Implement security and data protection measures throughout the development process. 
• Troubleshoot and debug issues across the entire application stack, from frontend to backend. 
• Optimize application performance and ensure its responsiveness across various devices and browsers, applications for maximum speed and scalability.
• Producing software solutions that inherently support testing at multiple levels prior to delivery, including the decomposition of functions, interface-based design, dependency injection, unit testing, test-driven design, service level testing, and supporting user interface automation testing.
• Modifying and creating code to enable successful automated builds, deployment, and testing.
• Effectively leveraging tools and best practices to enable continuous integration and frequent, reliable releases.
• Monitoring system performance to ensure efficient operations and results.
• Collaborating with cross-functional teams, including designers, product managers, and other developers, to gather and understand project requirements.
• Collaborating with DevOps teams to deploy applications and ensure seamless integration with the production environment.
• Designing and developing high-quality, scalable, and efficient web applications using the MERN stack.
• Developing and implementing front-end components using React.js, ensuring a responsive and user-friendly interface.
• Building RESTful APIs and server-side applications using Node.js and Express.js.
• Creating and maintaining databases using MongoDB, ensuring data integrity and performance.
• Writing efficient and reusable code while adhering to best practices and coding standards.
• Conducting thorough testing and debugging of applications to identify and fix any issues or bugs.
• Mentoring and providing guidance to junior developers, sharing your knowledge and expertise.

Must-Have Skills

• Should have 3-6 years of proven experience as a MEAN/MERN Stack Developer.
• Should have proficient in JavaScript (React/Angular/Vue), with significant experience in Node.js and Express.js.
• Should have extensive experience with React.js and its ecosystem (Redux, React Router, etc.).
• Should have In-depth knowledge of server-side development using Node.js and Express.js.
• Should have experience with MongoDB or other NoSQL databases, including data modeling and querying.
• Should have a solid understanding of RESTful APIs and experience in building them.
• Should be proficient in MERN Full Stack Developer with CSS modules and theme management, with a strong grip on developing custom components. 
• Should be Skilled in building scalable, user-friendly applications using React.js, Node.js, Express.js, and MongoDB.
• Should be proficient in using UI component libraries like MUI and styled-components for efficient and dynamic web design.
• Should be proficient in frontend API caching with React hooks for optimized performance and seamless user experiences.
• Should have familiarity with version control systems (e.g., Git) and agile development methodologies.
• Should have proficiency in Object-Oriented Programming (OOP) principles and design patterns.
• Should have experience with AWS cloud services.
• Should have experience with CI/CD technologies.
• Should have familiarity with newer specifications of ECMAScript (a scripting language specification on which JavaScript is based).
• Should have experience with data structure libraries (e.g., Immutable.js).
• Should have proficiency with common front-end development tools such as Babel( Which is a JavaScript compiler that is mainly used to convert ECMAScript 2015+ code into backwards-compatible JavaScript code that can be run by older JavaScript engines.), Webpack (to bundle JavaScript files for usage in a browser,), and NPM (Largest Software Registry (Library)).
• Should have ability to understand and translate business requirements into technical specifications.
• Should have familiarity with relational database systems, especially PostgreSQL.
• Should have experience in AWS with lambda functions

Good to Have Skills 

• Should have a Bachelor's degree in Computer Science or related field.
• Good interpersonal skills with the ability to present ideas in user-friendly language.
• Successful experience working in a team-oriented, collaborative environment.
• Proven analytical and problem-solving abilities.
• Should have excellent relationship and customer handling skills.
• Strategic thinker with strong influencing skills and the ability to build consensus.
• Strong action orientation; ability to make things happen.
• Facilitates team and stakeholder meetings effectively.

• Previous working experience as a MERN/MEAN  Stack Developer for 1 year (Minimum).
• In depth knowledge of NodeJS, ExpressJS or Restify
• Experience implementing applications using Angular 2+ versions or React
• Experience creating front end applications using HTML5, Angular/React, LESS/SASS
• Hands on experience with JavaScript
• Development on both client and server-side
• Experience on Angular 2+  and React Js will be an plus point
• Experience on both MEAN/MERN Technologies will be an advantage.

• Work with development teams and product managers to ideate software solutions
• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design
• Develop and manage well-functioning databases and applications
• Write effective APIs
• Test software to ensure responsiveness and efficiency
• Troubleshoot, debug and upgrade software
• Create security and data protection settings
• Build features and applications with a mobile responsive design
• Write technical documentation
• Work with data scientists and analysts to improve software