15+ Web performance optimization Jobs in India

Job Title : Senior Node.js Developer

Experience : 5 to 10 Years

Location : Gurugram (5 days WFO) | Initial 15 days in Udaipur (expenses covered)

Notice Period : 1 Month or less

Role Overview :

We are hiring a Senior Node.js Developer to lead and deliver scalable solutions, drive best practices, and mentor engineers. Strong Node.js expertise is mandatory (MERN experience welcome with Node.js depth).

Mandatory Skills :

Node.js, Express.js, Data Structures & Algorithms, System Design (HLD/LLD), CI/CD, Git, Agile, Async programming, Debugging & Performance Optimization.

Key Responsibilities :

• Lead development and ensure high‑quality delivery.
• Gather requirements, design (HLD/LLD), and implement solutions.
• Optimize performance, scalability, and integrations.
• Mentor team members and support hiring.
• Collaborate in Agile teams and enforce coding best practices.

Required Skills :

• 5 to 10 Years in backend with Node.js/Express.js.
• Strong in DSA, problem‑solving, and system design.
• Experience with CI/CD, Git, and Agile methodologies.
• Expertise in async programming, debugging, and performance tuning.
• Excellent communication and collaboration skills.

Nice to Have : MERN stack exposure, cloud (AWS/Azure/GCP), Docker, caching/queues.

Interview Process :

1. AI Technical Interview
2. System Design Round (HLD & LLD)
3. Data Structures & Algorithms
4. HR Interview

Location :

• Primary : Gurugram (Digital Greens, Sector 61)
• Initial 15 days : Udaipur (A‑square, Shobhagpura)

Note : Preference for Gurugram/NCR candidates. Stable profiles only.

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.

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 : Applied AI Engineer (AI/ML & LLM Deployment)

Experience : 4+ Years

Location : Remote

Job Summary :

We are looking for an Applied AI Engineer with strong expertise in Large Language Models (LLMs) to design, optimize, and deploy advanced AI solutions. The role focuses on LLM integration, fine-tuning, and performance optimization for scalable production use.

Mandatory Skills :

LLM Integration, Prompt Engineering, LangChain/LlamaIndex, Fine-tuning & LoRA, Model Quantization, Local Deployment, Tokenizers, Performance Optimization.

Key Responsibilities :

• Integrate GPT-4, Claude, and open-source LLMs into applications.
• Design and implement prompt engineering for context-specific, tone-appropriate outputs.
• Build AI pipelines using LangChain, LlamaIndex, or similar frameworks.
• Perform fine-tuning and LoRA (Low-Rank Adaptation) to customize models.
• Apply model quantization (GGML, GPTQ, bitsandbytes) for efficient deployment.
• Deploy models with Hugging Face Transformers, vLLM, llama.cpp.
• Optimize tokenization and inference performance for low latency.

Required Skills :

• Strong hands-on experience with LLMs (OpenAI GPT-4, Claude, open-source models).
• Proficiency in Prompt Engineering and tone-specific output design.
• Experience with LangChain, LlamaIndex, or other orchestration frameworks.
• Knowledge of fine-tuning, LoRA techniques, and quantization methods.
• Familiarity with deployment frameworks (Transformers, vLLM, llama.cpp).
• Strong understanding of tokenizers and efficient text preprocessing.
• Ability to optimize models for real-time, low-latency inference.
• Solid programming skills in Python and experience with PyTorch/TensorFlow.

Nice to Have :

• Exposure to MLOps tools (Docker, Kubernetes, CI/CD for AI).
• Experience with evaluation frameworks for LLMs.
• Knowledge of multi-modal models (text, vision, audio).

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)

Job Title : SAP ABAP Technical Consultant

Experience : 17 Years (12+ Years Relevant)

Location : Bengaluru

Work Mode : Full-Time | UK Hours

Mandatory Skills :

ABAP RICEFW, OData & SAP Gateway, ABAP on HANA (CDS, AMDP), Debugging & Performance Optimization.

Good-to-Have : SAP BTP (CAP), SAP PI/PO or CPI, ABAP Workflow, RESTful ABAP Programming.

Key Responsibilities :

• Design, develop, and customize ABAP programs to enhance SAP functionalities.
• Build and optimize ABAP on HANA objects (CDS Views, AMDP).
• Handle data migrations, integrations, and OData services for Fiori apps.
• Develop RICEFW objects and collaborate on BTP/CAP extensions.
• Ensure compliance with SKAT and Nordic localization requirements.

Required Skills :

• Strong expertise in ABAP RICEFW development (Reports, Interfaces, Conversions, Enhancements, Forms).
• Hands-on experience with OData services & SAP Gateway for Fiori applications.
• Proficiency in ABAP on HANA (CDS Views, AMDP, performance optimization, advanced debugging).
• Experience in data migration & third-party integrations.
• Knowledge of BTP extensions (CAP) and modern SAP development frameworks.
• Familiarity with SAP PI/PO or CPI for system integrations.
• Understanding of SAP Workflow solutions and RESTful ABAP Programming Model.
• Ability to ensure compliance & localization (SKAT, Nordic tax authority standards).

About the role

Our UX is a key differentiator. We invest heavily in UI, aiming for a snappy and intuitive experience. We believe in Product-Led Growth, which holds that even enterprise adoption of software tools begins with individual users. The key to achieving this is creating a user experience that prompts customers to respond quickly. We are investing in amazing UX at every touchpoint: website, help docs, dev docs, community, contacting support, asking sales for a demo, etc. This work is high-impact as it affects not only the immediate business goals of driving sign-ups but will have a long-lasting impact on our brand.

About the role

Our UX is a key differentiator. We invest heavily in UI, aiming for a snappy and intuitive experience. We believe in Product-Led Growth, which holds that even enterprise adoption of software tools begins with individual users. The key to achieving this is creating a user experience that prompts customers to respond quickly. We are investing in amazing UX at every touchpoint: website, help docs, dev docs, community, contacting support, asking sales for a demo, etc. This work is high-impact as it affects not only the immediate business goals of driving sign-ups but will have a long-lasting impact on our brand.

What it means to be an early engineer

Being part of the founding team, you will have the opportunity to shape the future of sustainable energy. Together, we’re going to face the hardest technical challenges this journey has to offer head-on. As the team grows, you’ll be the battle-hardened expert that everyone looks to for guidance. Your role will be pivotal in building a mission-critical analytics platform that encompasses predictive ML models, real-time analytics, and user-friendly dashboards.

As a Frontend Engineer, here’s what you’ll be doing

• Develop our web applications using React, Redux, Next.js, HTML, CSS
• Build scalable and interactive data visualization components for complex analytics
• Integrate external tools for product analytics
• Create and execute test plans and test cases ensuring high-quality user experiences
• Quickly develop proof of concepts (POCs) for new features or product ideas
• Regularly update and maintain website content and assets

We are excited about you because you have:

• Proven 4+ years of experience as a Frontend Developer with a strong portfolio of web applications developed using React, Next.js, and other similar technologies
• Strong understanding of HTML and various CSS Frameworks
• Familiarity with integrating advanced charting libraries, maps, calendars, and other third-party components into web applications
• Proven expertise in handling browser components DOM, Cookie, Session etc
• Proficiency in frontend testing methodologies for flawless user experience and optimizing web application performance
• Good understanding of website management and maintenance, SEO, CMS, etc.

You’ll be a great fit if:

• You have 4+ experience in building frontend applications
• Previously worked in a startup environment and have a high degree of ownership and appetite for ambiguity
• Like being a part of a high-performing team focussed on fast-paced execution at the same time detail-oriented
• A relentless desire to solve customer problems and chase down answers

Why choose Our Client?

We're the leader in battery analytics and are backed by prominent investors like YC. Today, we're the only company single-mindedly focused on enabling the world's transition to electric vehicles. We are among the most innovative companies that use data to uncover insights about electric vehicles and batteries. More importantly, you will have the opportunity to implement your tech skills to solve real-world issues like climate change. Let's do something great together.

Why choose Our Client?

Certa (getcerta.com) is a Silicon Valley-based tech product start-up that is automating the vendor, supplier, and other stakeholder onboarding processes (think background checks, agreements, and the works) for companies across industries and geographies. With multiple Fortune 500 and Fortune 1000 clients, at Certa's tech team, you will be working on stuff that is changing the way huge companies do business.

Must Haves:

• Experience developing enterprise-grade quality software.
• 3+ years of experience building large-scale front-end applications using React.
• 3+ years of experience using type-safe JavaScript-based languages, such as TypeScript.
• Understanding of modern frontend ecosystems, including Bundling(preferably using vite), Linting, Testing and Releasing
• Success with mentoring mid-level & junior Engineers.
• Experience in Agile software development methodologies.
• Experience writing automated tests (e.g., Vitetest, Cypress, Jest, Testing Library).
• Experience in building, scaling & maintaining a design system from scratch.
• Experience in improving rendering as well as delivery performance for front-end applications.
• Experience in writing semantic HTML.
• Experience in building scalable, responsive, and cross-browser-compatible web applications.
• Experience in a peak-performance organization, preferably a tech startup.
• Experience working with a remote team.
• Data analysis experience, and understanding of how analytics can help with product decisions.

Bonus:

• Experience building integrations and data synchronizations with event pub/sub-models.
• Experience with WebGL
• Experience in building offline applications using Web Workers
• Open source contributions.
• Running his/her own blog.
• Experience with building 100% keyboard and screen reader-accessible applications.
• Experience setting up and customizing JavaScript tooling and building systems.

Job Title : Solution Architect – Denodo

Experience : 10+ Years

Location : Remote / Work from Home

Notice Period : Immediate joiners preferred

Job Overview :

We are looking for an experienced Solution Architect – Denodo to lead the design and implementation of data virtualization solutions. In this role, you will work closely with cross-functional teams to ensure our data architecture aligns with strategic business goals. The ideal candidate will bring deep expertise in Denodo, strong technical leadership, and a passion for driving data-driven decisions.

Mandatory Skills : Denodo, Data Virtualization, Data Architecture, SQL, Data Modeling, ETL, Data Integration, Performance Optimization, Communication Skills.

Key Responsibilities :

• Architect and design scalable data virtualization solutions using Denodo.
• Collaborate with business analysts and engineering teams to understand requirements and define technical specifications.
• Ensure adherence to best practices in data governance, performance, and security.
• Integrate Denodo with diverse data sources and optimize system performance.
• Mentor and train team members on Denodo platform capabilities.
• Lead tool evaluations and recommend suitable data integration technologies.
• Stay updated with emerging trends in data virtualization and integration.

Required Qualifications :

• Bachelor’s degree in Computer Science, IT, or a related field.
• 10+ Years of experience in data architecture and integration.
• Proven expertise in Denodo and data virtualization frameworks.
• Strong proficiency in SQL and data modeling.
• Hands-on experience with ETL processes and data integration tools.
• Excellent communication, presentation, and stakeholder management skills.
• Ability to lead technical discussions and influence architectural decisions.
• Denodo or data architecture certifications are a strong plus.

Job Title : React.js Developer with PWA Studio

Location : Remote

Experience : 10+ Years

Job Description :

We are looking for a highly experienced Frontend Developer with a strong background in React.js and PWA Studio to work on cutting-edge eCommerce solutions built on the Magento platform.

This role requires deep expertise in Progressive Web App development (PWA), frontend architecture, and performance optimization.

Mandatory Skills :

React.js, Next.js, PWA Studio, Magento 2.x integration, JavaScript (ES6+), HTML5, CSS3, Redux, RESTful APIs, GraphQL, Git, performance optimization, responsive design.

Key Responsibilities :

• Design and develop high-performance, scalable front-end solutions using React.js and Next.js.
• Build and optimize Progressive Web Apps (PWAs) using Magento PWA Studio.
• Collaborate with backend developers to integrate with Magento 2.x APIs and ensure seamless user experiences.
• Implement and maintain responsive UI components using HTML5, CSS3, JavaScript (ES6+), React, and Redux.
• Optimize application performance using tools like Lighthouse, Webpack, and advanced code-splitting techniques.
• Develop and maintain robust CI/CD pipelines and manage deployments via Vercel.
• Ensure high code quality by writing unit and integration tests using frameworks such as Jest, Mocha, or Cypress.
• Work closely with product and design teams in an Agile environment to deliver user-centric solutions.

Mandatory Skills :

• 10+ years of frontend development experience.
• Expert in React.js, Next.js, and JavaScript (ES6+).
• Hands-on experience with Magento PWA Studio.
• Proficient in HTML5, CSS3, Redux, and responsive design.
• Deep understanding of RESTful APIs and GraphQL.
• Strong knowledge of Git and version control best practices.
• Solid experience in performance optimization for web applications.

Good to Have :

• Experience with Magento 2.x backend.
• Prior experience deploying frontend apps with Vercel.
• Familiarity with serverless architecture and CI/CD in cloud environments.

Roles & Responsibilities:

• Creating and executing a strong performance marketing strategy & execution plan.
• Developing and managing digital prospecting and remarketing campaigns
• Managing budgets and campaigns across all digital channels to drive strong return on investment and efficient CAC
• Ensuring successful planning, execution, optimization for key traffic KPIs via paid, organic & own media channels
• Identifying and testing new channels to continue to meet or exceed established critical metrics
• Working closely with the management to share funnel conversion improvement ideas, feedback & present results

Scope:

The key skills and expertise needed are:

1. eCommerce/Retail experience can be optional but needs to have experience with any high volume customer facing web/mobile site

2. Web Development, Front End Development, AND In the browser performance profiling

3. Java, Spring Boot, React, Node, Redux, Webpack, Microservices, AND experience with AWS technologies to make the overall application stack more resilient

4. Performance Profiling of web/mobile experiences and experience with working in CICD environment

5. Experience working with Web based and mobile ecommerce sites or similar public facing websites with high customer volume

6. Needs to be able to work at the code level doing performance profile to evaluate how the website and associated digital platform is built to find performance improvement opportunities

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: