Fullstack Engineer - MERN - SR1

About the Job

This is a full-time role for a Senior Fullstack Engineer at Spark Eighteen. We are seeking an experienced and influential developer to lead the design, architecture, and implementation of cutting-edge, end-to-end solutions. This role requires a deep expertise in both frontend (React) and backend (Node.js) technologies, along with the ability to provide strong technical leadership and drive innovation across the full technology stack. The job location is for the Saket office in Delhi NCR.

Responsibilities

• Lead the development of major features and complex project components across the full stack, ensuring high-quality, scalable, and secure delivery.
• Design and architect efficient, maintainable solutions for both client-side and server-side systems.
• Provide technical leadership and mentorship to junior and mid-level developers, fostering a culture of engineering excellence.
• Drive the adoption of new technologies and best practices to enhance application performance, security, and reliability.
• Collaborate closely with product managers, designers, and other engineers to translate business requirements into robust technical solutions.
• Conduct architectural reviews, make strategic technical decisions, and implement risk mitigation strategies for technical challenges.
• Champion code quality initiatives and enforce coding standards across the team.

Requirements

Technical Skills

• 3+ years of professional experience in software development with a strong fullstack background.
• Mastery of HTML5, CSS3, and advanced JavaScript (ES6+), including asynchronous programming.
• Strong proficiency in React or Next.js, with deep experience in state management libraries like Redux or Context API.
• Proven experience with modern frontend build tools (e.g., Webpack, Babel) and testing frameworks (e.g., Jest, Cypress).
• Deep professional experience in Node.js and TypeScript, including advanced patterns and debugging techniques.
• Strong understanding of API security (JWT, OAuth), caching strategies (Redis/Memcached), and data encryption.
• Proficiency with cloud providers (AWS, GCP, Azure), serverless frameworks, and cloud databases (e.g., DynamoDB).
• Thorough understanding of security best practices across the full stack (e.g., XSS, CSRF, TLS/SSL).
• Proficiency with advanced Git workflows, CI/CD pipelines, and collaborative development processes.

Soft Skills

• Excellent cross-functional communication skills, with the ability to articulate complex technical concepts clearly.
• Proven technical leadership and a passion for mentoring and elevating the skills of team members.
• Strategic thinker with robust analytical, problem-solving, and risk assessment capabilities.
• Strong ability to align technical initiatives with broader business strategy.
• A collaborative approach and a commitment to continuous learning and technical excellence.

What We Offer

• Professional Growth: Continuous learning opportunities through diverse projects and mentorship from experienced leaders.
• Global Exposure: Work with clients from 20+ countries, gaining insights into different markets and business cultures.
• Impactful Work: Contribute to projects that make a real difference, with solutions generating over $1B in revenue.
• Work-Life Balance: Flexible arrangements that respect personal wellbeing while fostering productivity.
• Career Advancement: Clear progression pathways as you develop skills within our growing organization.
• Competitive Compensation: Attractive salary packages that recognize your contributions and expertise.

Our Culture

At Spark Eighteen, our culture centers on innovation, excellence, and growth. We believe in:

• Quality-First: Delivering excellence rather than just quick solutions.
• True Partnership: Building relationships based on trust and mutual respect.
• Communication: Prioritizing clear, effective communication across teams.
• Innovation: Encouraging curiosity and creative approaches to problem-solving.
• Continuous Learning: Supporting professional development at all levels.
• Collaboration: Combining diverse perspectives to achieve shared goals.
• Impact: Measuring success by the value we create for clients and users.