React / Firebase Konnex Web Developers

JD-

Job Title: Full Stack Developer (ASP.NET & MySQL)

Experience Required: 3 to 5 Years

Location: Kalina, Mumbai (Onsite)

Employment Type: Full-Time

About the Role:

We are looking for a skilled and proactive Full Stack Developer with 3 to 5 years of hands-on experience in ASP.NET and MySQL to join our dynamic team in Kalina, Mumbai. This is a fully onsite role, ideal for professionals who enjoy working in a collaborative office environment and are passionate about building scalable web applications.

Key Responsibilities:

• Design, develop, test, and maintain web applications using ASP.NET (MVC/Web API).
• Write clean, scalable, and efficient code for both front-end and back-end development.
• Develop and manage MySQL databases, including design, optimization, and complex queries.
• Collaborate with UI/UX designers, front-end developers, and other stakeholders to deliver seamless user experiences.

Required Skills & Qualifications:

• 3 to 5 years of experience in full stack development.
• Strong proficiency in ASP.NET (MVC, Web API) and C#.
• Solid experience with MySQL database design, queries, and optimization.
• Good understanding of front-end technologies such as HTML, CSS, JavaScript, and jQuery.
• Familiarity with version control tools like Git.

Good to Have (Preferred):

• Experience with front-end frameworks (e.g., Angular, React).
• Knowledge of RESTful API development and integration.
• Understanding of Agile methodologies.

Location & Work Mode:

• Location: Kalina, Mumbai
• Work Mode: Onsite (Work from Office)

Senior Software Engineer.

• A degree in Data Science, Artificial Intelligence, Computer Science, or a related field
• Strong proficiency in Python, with a solid understanding of object-oriented programming principles.
• Proven experience in developing applications powered by Large Language Models (LLMs).
• Demonstrated experience in building and maintaining robust ETL (Extract, Transform, Load) data pipelines.
• Ability to build full-stack applications using JavaScript; experience with modern frameworks like React and Next.js is highly desirable.
• A pragmatic and self-starting individual, capable of executing tasks effectively with minimal supervision.
• Experience developing modern frontend applications, with specific expertise in using Web Components.
• Knowledge of simulation principles and discrete optimisation techniques.
• Relevant professional certifications in AI, Machine Learning, or cloud platforms are a plus.

Experience

• Proven track record building AI (e.g. LLM-powered solutions, Agent-Based Applications), data science, or numerical computing projects end-to-end—from initial concept through to deployment and maintenance.
• Extensive hands-on experience (4+ years) with core technologies, including:
• Advanced Python, utilising libraries such as NumPy, Pandas, and frameworks for multiprocessing and asynchronous programming.
• Relational database management systems.
• Development and deployment within Linux environments.
• Collaborative development workflows using Git.

Role Summary

We’re seeking a highly skilled and self-motivated Senior Software Engineer who thrives in a startup environment. You will lead end-to-end development of key features, own architectural decisions, and ensure the smooth delivery of our product.

Mandatory Skill Sets/Expertise

• 5-6 years of experience in full-stack development, with a strong focus on the MERN / PERN stack (MongoDB, PostgreSQL, Express, React, Node.js) and AWS.

• Expertise in AWS cloud architecture and experience with serverless solutions (Lambda, DynamoDB, API Gateway).

• Proficiency in designing and implementing CI/CD pipelines using Git, Jenkins, Github actions, or similar tools.

• Proven experience leading and guiding a development team, with strong mentoring skills.

• Ability to work independently and manage deliverables without oversight, while thriving in a startup mentality.

• Strong problem-solving abilities with a proactive approach to addressing technical challenges.

• Experience with databases like PostgreSQL, MongoDB, or other NoSQL solutions along with ORM tools like Sequalize & Mongoose ORM

• Excellent communication skills, both written and verbal, with the ability to explain complex technical concepts to non-technical stakeholders.

Nice to Have

• Knowledge of Typescript for both frontend and backend development. • Experience with Docker and containerized applications.

• Familiarity with GRC (Governance, Risk, and Compliance) tools or SaaS products.

• Experience with other AWS services like ECS, CloudFormation, or RDS.

Key Responsibilities

• Lead and mentor a team of developers, driving best practices in coding and architecture.

• Take full ownership of modules, from design through deployment, and launch web apps singlehandedly if needed.

• Design, develop, and maintain web applications using the PERN / MERN stack (MongoDB, PostgreSQL, Express, React, Node.js) with a focus on scalability, security, and performance.

• Prepare high-level technical designs and architectural decisions, especially on AWS serverless architecture and microservices.

• Implement secure, reliable, and scalable solutions using AWS services • Design and manage CI/CD pipelines to ensure continuous integration and automated deployments.

• Optimize application performance through techniques like lazy loading, code splitting, and caching.

• Collaborate with cross-functional teams, including Product Management, to define features and user experience improvements.

• Ensure high code quality by adhering to SOLID principles, implementing comprehensive testing, and embedding observability into the application.

• Monitor and respond to application performance incidents, focusing on improving uptime and resilience.

• Proactively offer suggestions during retrospectives and work on enhancing team productivity metrics such as Lead Time, Deployment Frequency, and Mean-Time-to-Recovery

Position: Founding Engineer (SDE)

Location: Remote

Do you have a passion for developing cutting-edge software? Do you thrive in the innovative atmosphere of a startup? If coding is your art, and you have the prowess to turn problems into sophisticated solutions, then we're looking for you!

We are an early-stage startup working on re-defining how businesses in India approach accounting.

The Role:

• Dive deep into coding challenges, transforming ideas into groundbreaking software solutions.
• Play a pivotal role in our startup's journey, working closely with a dynamic team to develop the next big thing.
• See the immediate impact of your work in a rapidly-growing company.
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What We're Looking For:

• Experience: Minimum 2 years in software development.
• Problem Solvers: Ability to take on a challenge, break it down, and deliver an end-to-end solution.
• Team Player: Collaborative mindset to work seamlessly with cross-functional teams.
• Fast Learner: Adaptability in a rapidly changing environment

Nice to Have:

• Victories in hackathons or coding challenges, showcasing your ability to innovate under pressure.

Why Join Us?

• Be at the forefront of our exciting journey, where your contributions directly shape our success.
• Collaborative and open culture – your insights and expertise won't just be appreciated; they'll be celebrated!
• Opportunities for rapid growth, professional development, and unique challenges.
• Competitive, class-leading compensation

CTC: 25-40LPA based on experience

We are looking for a Full Stack Developer to produce scalable software solutions. You’ll be part of a cross-functional team that’s responsible for the full software development life cycle, from conception to deployment.

As a Full Stack Developer, you should be comfortable around both front-end and back-end coding languages, development frameworks and third-party libraries. You should also be a team player with a knack for visual design and utility.

Experience: 5 to 6 years

Tertiary qualifications in Software Engineering.

2+ years experience in front end development using React or another JS or TS based language such as VueJS, Angular 8years.

2+ years experience in modern web design.

2+ years experience in full stack development using Python or PHP based backends.

1+ years experience microservices development.

1+ years experience with AWS Lambda, API Gateway or similar.

Understanding of OAuth or OIDC authentication flows Understanding of the OWASP Top 10 secure coding recommendations.

Exposure to basic Database Design.

Exposure to and understanding of PromQL or GraphQL, REST and SOAP.

Requirements:

Ability to work effectively in a team and independently.

Excellent English written and verbal communication skills.

Ability to multi-task and work under pressure.

Strong organizational, analytical and problem solving skills.

Ability to develop and maintain strong interpersonal working relationships with peers and customers.

Thoroughness and a high level of attention to detail.

Must be able to conceptualise systems that comprise of people, process and/or technologies and consider the broader integration perspectives.

Job Requirements:

• Good with React ,Node, Express & MongoDB/Firebase
• Node JS API (Backend) Development or Firebase Cloud Function, Runtime Environment
• Express JS & Express Routing
• Mongo DB/Firebase & its Operations
• Developing Applications With React

Required Candidate profile

• Good communication skills.
• Expert knowledge of MERN technologies.
• Resolves and/or escalates issues in a timely fashion.
• Able to work in a fast-paced working environment.

Roles and Responsibilities

• The candidate should have good experience in React & Node. Ability to understand business requirements and translate them into technical requirements.
• Produce high-quality code and experience with security implementations Identifying application security risks and Implementing security patches procedures.
• Stronghold on MongoDB and experience on other No SQL databases.
• Experience with Graph, Payment Gateway, Node.js process management, and web sockets like socket.io

Desired Candidate Profile

• Good understanding of core concepts of React.js.
• Strong understanding of Node.js and express.
• Hands-on experience in state management libraries like Redux & RXJS.
• Strong foundation of HTML5 & CSS3, pre-processors (Less/SCSS) and JavaScript.
• Experience integrating with Restful web services.
• Proficient with ES6/7/8 syntax and concepts.
• Also into Microservice architecture, Kubernetes, PUB-SUB concept

Permanent WFH opportunity.

Shift timing 11 am- 8 pm