Senior Software Engineer

Senior Software Engineer – Full Stack

Location: Mumbai | Full-time

About IDfy

IDfy is a digital identity and background verification company helping businesses prevent fraud and streamline onboarding. Our services include KYC, background checks, document verification, and risk assessment powered by AI and machine learning.

About Privy

Privy by IDfy is India's first consent governance and data privacy compliance platform, simplifying adherence to the DPDP Act. We're building at the intersection of privacy tech, AI-driven compliance, and data discovery, enabling organizations to manage personal data, digital experiences, and regulatory processes intelligently.

Join us to help shape the future of privacy infrastructure—think Aadhaar or UPI, but for data protection. You'll work with a passionate team, solve real-world challenges, and build systems that will serve as critical infrastructure in the privacy-first era.

Role Overview

We're on a mission to scale rapidly over the next two years—and we need a Senior Full Stack Engineer to power this growth. If you're passionate about designing scalable systems, writing clean code, and shipping products that matter, we want you on our team.

Key Responsibilities

Frontend

• Design and implement modular, reusable, and performant frontend components.
• Build responsive and dynamic user interfaces using JavaScript (ES6+), and modern frameworks like React or Vue.
• Optimize performance with techniques like lazy loading, code splitting, and virtual scrolling.
• Leverage browser APIs and handle advanced cases (e.g., iframe embedding, secure cross-domain communication).
• Implement secure cookie handling (e.g., HttpOnly, SameSite, Secure).

Backend

• Design and implement RESTful APIs; familiarity with backend frameworks (Elixir/Phoenix is a plus).
• Develop scalable, secure, and maintainable backend services.
• Integrate authentication protocols such as JWT and OAuth.
• Ensure API performance and reliability across systems.

General

• Collaborate cross-functionally with product, design, and engineering teams.
• Debug complex issues and optimize performance across the stack.
• Stay up to date with emerging tools, trends, and best practices in full stack development.

Required Skills

Frontend

• Strong JavaScript (ES6+) and TypeScript proficiency.
• Experience with modern frameworks: React, Vue.js, Angular, or SolidJS.
• Deep understanding of DOM, events, accessibility, and semantic HTML.
• Advanced CSS knowledge: Flexbox, Grid, animations, pre-processors (SASS/LESS).

Performance Optimization

• Experience with bundlers like Webpack, Vite, or Rollup.
• Hands-on with tree shaking, code splitting, asset optimization.
• Expertise in rendering large datasets with techniques like virtual DOM/windowing.

Backend

• Experience with any backend language; bonus for Elixir/Phoenix.
• Strong grasp of REST principles and API design.
• Understanding of database design and querying.

Security & Browser APIs

• In-depth knowledge of browser APIs: Web Storage, Service Workers, Canvas, etc.
• Secure cross-domain communication and authentication practices.

General

• Solid understanding of the JavaScript event loop.
• Strong debugging and troubleshooting skills.
• Familiarity with Agile methodologies and CI/CD pipelines.
• Excellent written and verbal communication.

Why Join Us

• Work on critical infrastructure for India's privacy future.
• Solve meaningful, real-world challenges at scale.
• Be part of a high-impact, fast-paced team with ambitious goals.