Fullstack Developer

Job Title: Full Stack Developer (Node.js + React.js)

📍 Location: Gurgaon (On-site)

🕒 Experience: 5+ Years

🕒 Working Days: 5 Days(Mon-fri)

Job Summary:

We are hiring a passionate and experienced Full Stack Developer proficient in Node.js and React.js for our client. The ideal candidate should have solid experience in designing scalable systems, writing optimized code, implementing role-based access control, handling task prioritization, and building robust web applications.

Key Responsibilities:

• Design scalable user management systems with role-based access and authentication.
• Develop backend services and REST APIs using Node.js.
• Build dynamic and optimized front-end applications using React.js and Redux.
• Handle async operations, task queues, and implement retry and prioritization logic.
• Optimize React components for performance using hooks and memoization.
• Ensure secure and scalable system design with proper error handling and authorization flows.
• Apply JavaScript concepts like closures, event loop, and async patterns in real-world scenarios.
• Collaborate with DevOps for basic CI/CD and deployment processes.

Mandatory Technical Skills:

• Frontend: React.js, Redux, JavaScript (ES6+)
• Backend: Node.js, Express.js
• Authentication & Authorization: JWT, OAuth2, Role-Based Access Control (RBAC)
• Task Management: Async/Await, Promises, Retry Mechanisms
• Database: MongoDB or PostgreSQL
• Version Control: Git

Soft Skills:

• Strong problem-solving and system design skills
• Ability to work independently and in a collaborative team
• Clear communication of technical ideas
• Ownership of tasks and components end-to-end

Focus Areas:

• System Design (User Management, Fault Tolerance, Load Distribution)
• JavaScript Core Concepts (Closures, Scope, Event Loop)
• React Optimization & Hooks
• Node.js Architecture & Async Programming
• Task Prioritization and Retry Logic

Job Description in Brief: SiGa Systems is looking for 3 to 8 years of experience who is proficient in PHP/ WordPress/Laravel/ CodeIgniter / to develop Websites and web applications in core PHP. The desired candidate would be involved in a full software/ website development life cycle, starting from requirement analysis to testing. The candidate should be able to work in a team or should be able to handle projects independently. 

Technical Key Skills:

• Expertise in MVC, PHP Framework (Laravel, CodeIgniter), WCF, Web API, and Entity Framework.
• Proficient in jQuery, AJAX, Bootstrap, Proficient in HTML5, CSS3, JavaScript, SQL Server, WordPress, MySQL.
• Hands-on core PHP along with experience in AJAX, jQuery, Bootstrap, APIs
• Experience with Project Management systems like Jira, Trello, Click, Bug herd, Basecamp, etc.
• Experience in Shopify is preferred. High proficiency with Git.
• Must have good communication skills.

Roles & Responsibilities:

• Should be responsible for developing websites and Web Based Applications using Open
• Source systems.
• Monitor, manage, and maintain the server environments where PHP Laravel applications are
• hosted, ensuring optimal performance, security, and availability.
• Integrate third-party APIs and services as needed.
• Strong communication and interpersonal skills, with the ability to work effectively in a
• collaborative team environment.
• Actively participate in quality assurance activities including design and code reviews, unit
• testing, defect fixes, and operational readiness.
• Diagnose and resolve server-related issues, including those impacting the performance of
• Laravel applications. This includes debugging server errors, analyzing logs, and identifying
• root causes of downtime or slow response times.
• Manage development projects from inception to completion autonomously and
• independently
• Provide administrative support, tools, and documentation for specific development projects.
• Design applications and database structures for performance and scalability.
• Deliver accurate project requirements and timeline estimates, providing regular feedback
• and consistently meeting project deadlines.
• Designing and implementing web-based back-end components that are high-performing and
• scalable.
• Participating and improving development processes and tools for other development teams.
• Playing a lead role in software design, architecture, requirements analysis, investigation of
• leading-edge technologies, and software development.
• Contribute with ideas and efforts towards the project and work as part of a team to find
• solutions to various problems. 

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

Minimum of 6 years of experience in software development. Proficiency in developing declarative and component-based SPAs using Vue.js. Experience with front-end technologies such as HTML, CSS, JavaScript, and TypeScript. Expertise in Vue.js, including Vuex for state management and Vue Router for navigation. Strong understanding of Java and experience with Spring Boot framework. Knowledge of RESTful APIs and microservices architecture. Knowledge of Spring Security framework for implementing authentication and authorization in Spring-based applications. Experience with Keycloak and access management solutions for securing web applications. Understanding of OAuth and OpenID Connect protocols for single sign-on (SSO) authentication. Ability to integrate and configure Keycloak with Spring Boot applications to manage user authentication and authorization. Experience with JSON Web Tokens (JWT) for secure transmission of authentication data between client and server. Bachelor's degree in Computer Science, Engineering, or related field.

• Proven experience as a Full Stack Developer or similar role
• Experience developing desktop and mobile applications
• Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery)
• Minimum 1 years of experiance in ROR or Angular.
• Excellent communication and teamwork skills
• Great attention to detail
• An analytical mind

• Collaborate with multiple stakeholders to understand the business context
• Take responsibility for developing product features
• Implement development best practices

• Rich experience in Javascript and front end frameworks like React, Angular or Vue
• Build a backend APIs using Java, Node, Python or GoLang
• Proficiency in leveraging Cloud Native components in AWS, Azure or GCP
• Experience in building scalable applications using Microservices principles is a plus
• Experience in designing for performance is a big plus
• Ability to write high quality code
• Experience in polygot persistence using databases like relational (MySQL, Postgres) and NoSQL (MongoDB, Cassandra, DynamoDB, Redis etc)
• Familiarity with DevOps tools and technologies is a plus
• Passion for continuous learning of new technologies