5+ Web performance optimization Jobs in Delhi, NCR and Gurgaon | Web performance optimization Job openings in Delhi, NCR and Gurgaon

Required Skills: Advanced Flutter & Dart Expertise, Scalable Mobile Architecture Design, Performance Optimization & Profiling, OTT & Media App Engineering, Code Quality, Leadership & Cross-Functional Collaboration

Criteria:

• 6+ years of total software development experience with minimum 3+ years in Flutter
• Product-based company experience is mandatory (B2C scale preferred)
• Proven ability to own end-to-end Flutter mobile architecture for high-scale apps
• Strong expertise in Dart, Flutter SDK internals, and advanced state management (Bloc / Riverpod / Provider)
• Hands-on experience with platform channels and native integrations (Android & iOS)
• Deep knowledge of performance optimization: app startup time, FPS, memory leaks, widget rebuilds, rendering pipeline
• Experience with profiling tools (Dart DevTools, Android Profiler, Xcode Instruments)
• Strong skills in offline-first architecture, caching layers, and API integrations
• Ability to optimize video playback, downloads, DRM, and OTT workflows
• Strong command of clean code, SOLID principles, and scalable mobile system design
• Experience reviewing code and mentoring engineers (Senior IC role)

Description

Role Overview

We are looking for an experienced Flutter SDE III who can take complete ownership of architecture, performance optimization, and app scalability for our OTT mobile applications. This is a senior individual contributor role requiring deep technical expertise and the ability to influence design decisions at a product level.

Key Responsibilities

1. Architecture & Design (High-Impact IC Role)

• Own the end-to-end architecture of company’s Flutter mobile applications.

• Design scalable, modular, testable app ecosystems aligned with OTT-specific performance constraints.

• Lead decisions around state management, navigation hierarchy, API structure, offline capabilities, and security.

2. Performance & Device Optimization

• Diagnose and resolve mobile performance bottlenecks, including:

  o App startup time, FPS drops, memory leaks.

  o Heating issues, over-rendering, and expensive widget rebuilds.

  o Battery optimization, efficient network calls, caching strategy.

• Run in-depth profiling using tools like Dart DevTools, Android Profiler, and Xcode Instruments.

3. OTT-Specific Engineering

• Optimize video playback workflows for low-latency streaming.

• Implement efficient background processes for downloads, DRM, content sync, and push notifications.

4. Product & User Experience Ownership

• Collaborate closely with Product, Backend, and Video Engineering teams.

• Convert business/product requirements into high-performance technical solutions.

• Ensure UI/UX consistency across platforms while maintaining performance budgets.

5. Code Quality & Leadership

• Write clean, extensible, and maintainable code with strong adherence to SOLID and reactive programming principles.

• Review code for mid-level and junior engineers; act as a mentor across teams.

• Establish engineering standards, internal frameworks, and reusable components for long-term scalability.

Required Skills & Experience

Technical Must-Haves

• 6+ years of total experience with 3+ years in Flutter for large-scale products.

• Mandatory product-based company background (B2C scale preferred).

• Strong expertise in:

  o Dart, Flutter SDK internals

  o Bloc, Riverpod, Provider, or other state management approaches

  o Custom animations, rendering pipeline, shader-based optimization

  o Platform channels (Android/iOS) and native integrations

  o API integration, caching layers, offline-first architecture

• Strong understanding of mobile system design, scalable architecture, and low-level performance engineering.

Good to Have

• Experience with video streaming apps, OTT platforms, or media-heavy applications.

• Understanding of analytics frameworks (Firebase, Segment, Mixpanel).

• Exposure to CI/CD pipelines, automated testing, and fastlane.

Personality & Mindset

• Product thinking, not just feature-building.

• Ownership-driven with strong ability to take strategic technical decisions.

• Comfortable working in a fast-paced 0→1 and scale-up environment.

Why Join company?

• Work on a high-growth OTT app with millions of users.

• Opportunity to own the core mobile experience end-to-end.

• Build impact-heavy features at scale with a lean, highly skilled engineering team.

Role Overview

We are looking for an experienced Node.js Developer with deep expertise in backend engineering and related frameworks. The ideal candidate will be a strong problem solver, effective communicator, and proven mentor capable of leading development initiatives while ensuring code quality, scalability, and performance optimization.

Key Responsibilities

• Lead and contribute to multiple backend development projects ensuring high-quality delivery.
• Collaborate with business analysts, architects, and cross-functional teams to define technical specifications and gather requirements.
• Design and implement scalable, secure, and high-performance applications using Node.js and related frameworks.
• Develop detailed HLD (High-Level Design) and LLD (Low-Level Design) solutions.
• Mentor and guide junior developers, fostering knowledge sharing and growth.
• Participate in peer code reviews, ensuring adherence to best practices and coding standards.
• Optimize performance, concurrency, and scalability of applications.
• Implement CI/CD pipelines and ensure smooth deployment processes.
• Support and troubleshoot production issues, providing L3 support as required.
• Continuously research, evaluate, and integrate new technologies to improve applications and processes.
• Establish and enforce engineering best practices within the team.
• Actively participate in recruitment and talent-building initiatives.

Required Skills & Qualifications

• 5–10 years of strong professional experience in Node.js and frameworks like Express.js.
• Proficiency in MERN stack (preferred but must be heavy on Node.js).
• Strong understanding of multi-threading, concurrency, and performance optimization.
• Solid debugging, troubleshooting, and performance profiling expertise.
• Hands-on experience with source control systems (Git) and CI/CD environments.
• Familiarity with Agile methodologies (Scrum/Kanban).
• Strong knowledge of object-oriented and service-oriented application development.
• Excellent communication, leadership, and collaboration skills.
• Proven ability to work independently and in team settings with high ownership.

Job Title : Frontend Developer (React + Three.js)

Location : Noida

Experience : 2+ Years

Job Description :

We are looking for a Frontend Developer with strong skills in React.js and Three.js to build interactive, high-performance 3D web applications. The role involves creating smooth 3D experiences, optimizing performance, and collaborating with cross-functional teams.

Key Responsibilities :

• Develop responsive and dynamic UIs with React.js/Next.js.
• Implement and optimize 3D visualizations using Three.js/WebGL.
• Manage 3D assets (GLTF/GLB, textures, compression).
• Ensure performance optimization, cross-browser compatibility, and scalability.
• Collaborate with designers and backend teams to deliver seamless experiences.

Required Skills :

• JavaScript/TypeScript, React.js/Next.js
• Three.js / WebGL for 3D rendering & interactions
• State management (Redux, Zustand, Context API)
• 3D asset pipeline (GLTF/GLB, textures, compression tools)
• Performance optimization (profiling, draw calls, FPS tuning)
• API integration (REST/GraphQL)
• Version control (Git)

Responsibilities

• Help define Technical Roadmap and own the entire product delivery end to
• Work very closely with various business stakeholders to drive the execution of multiple business plans and
• Improve, optimize and identify opportunities for efficient software development processes
• Hire, Develop and Retain a strong team of
• Keep abreast of the changes in the industry and champion new technologies and development processes within the team
• Thinking backwards from a customer POV and relentlessly pursuing customer's cause in tech and product

• A graduation/post graduation degree in Computer Science (IITs, IIITs and NITs preferred)
• 7-12 years of strong experience in various frontend development technologies which includes Javascript (core and oops), Nodejs, Html, Css
• Expertise in 
• Any UI framework React/Vue 
• State Management libraries like redux
• Build tools (webpack, grunt, gulp etc)
• Experience with 
• best practices for JS development using jslint, testing frameworks etc.
• package managers like npm or yarn
• Experience working with agile teams and making rapid decisions in dynamic and disruptive environments.
• 2+ years of leading and managing a team consisting of backend, frontend and QA.
• Hands on writing and reviewing code
• Exceptional design and architectural skills.
• Strong communication skills.

Good to have

• Experience with AWS, Microfrontend, Nginx, CDN caching
• Exposure to Performance optimization techniques/tools (caching, cdn, lighthouse, optimization)
• Experience with Dockers & Containerization
• Knowledge of tools and best practices for Linting, Compiling, Minifying, Jenkins etc.
• Experience with "Micro Frontend architecture" & “Backend For Frontend”

What you need to have: