Senior Frontend Engineer

Delta6Labs; Dadri; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

Delta6Labs in Noida, India, is seeking a Senior Frontend Engineer with a strong background in blockchain, Web3, and fintech platforms. You will craft responsive UIs, implement smooth animations, review projects, and ensure high performance aligned with business goals.

Responsibilities include leading frontend architecture decisions, mentoring engineers, and optimizing Core Web Vitals, accessibility, SEO, and security.

Qualifications

• Minimum 5 years frontend development experience.
• Proficient in React/Next.js with strong JS/TS skills.
• Solid understanding of SSR/SEO, Core Web Vitals, and performance optimization.
• Experience with REST APIs and real-time apps via WebSockets.
• Familiarity with Vercel deployment and modern Git workflows.

Responsibilities

• Lead design, development, and delivery of large-scale web apps using React/Next.js.
• Make frontend architecture decisions and define engineering best practices.
• Create reusable, maintainable frontends and optimize performance.
• Facilitate estimation, sprint planning, and code reviews.
• Mentor junior and mid-level engineers and drive technical excellence.
• Optimize performance, security, scalability, and SEO (Core Web Vitals).
• Resolve production issues and implement lasting improvements.

Skills

5+ years frontend

React 4+ years

JavaScript/TypeScript

SSR/SEO

REST API/WebSockets

Vercel deployment

Git workflows

Tools

Vercel deployment

Git workflows

CI/CD pipelines

Job description

• Careers
• Senior Frontend Engineer

Senior Frontend Engineer

Open

We are looking for a skilled and passionate Sr. Frontend Engineer with a strong understanding of Blockchain, Web3, and Fintech platforms. The role involves developing responsive UIs, implementing smooth animations, reviewing existing projects, and ensuring high performance. Candidates should bring strong frontend development skills and the ability to deliver user-friendly, scalable, and efficient solutions aligned with business requirements.

Responsibilities

• Lead the design, development, and delivery of large-scale web applications using React.js and Next.js.
• Make frontend architecture decisions and define engineering best practices.
• Create Frontend Solutions that are reusable and maintainable as well as High-performing.
• Facilitating technical talks, estimation, sprint planning, and code review.
• Mentor and provide guidance to junior and mid-level engineers.
• Optimize performance, security, scalability, SEO, and Core Web Vitals.
• Resolve complex production problems, and you will create lasting improvements.

Mandatory Skills

• Frontend development experience, min 5 years
• React – 4+ Years of hands‑on experience. JS or Next. js.
• Experience in JavaScript (ES6+), TypeScript, HTML5, and CSS3.
• Knowledge of SSR, SSG, ISR, SEO optimization, and next. JS architecture.
• Working with Redux Toolkit, Zustand, or similar state management solutions.
• Hands‑on experience with REST API, WebSockets, and real-time applications
• Well‑versed in frontend optimization, browser performance rendering, and Core Web Vitals.
• Lead code reviews, mentor developers, and ensure best practices while making technical decisions
• Have analytical, debugging, and problem‑solving skills.
• Extensive experience with Vercel deployment, CI/CD pipeline, and Git workflows.

Preferred Skills

• Work background in Fintech, Trading Platforms, Crypto, or Blockchain apps.
• Familiarity with Micro frontend architecture and Module Federation.
• Handle Google Analytics, GTM, Mixpanel, CleverTap, or similar analytics tools.
• Familiarity with Jest, Cypress, Playwright, or React Testing Library.
• AWS, Cloudflare, CDN performance optimization, and high-traffic experience applications

Job Summary

Location Noida, India

Job Type Full-time

Date Posted June 26, 2026

Experience 4+ Years

Working Hours 9:00 AM - 6:00 PM