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Software Engineer with 8+ years of experience building enterprise web applications across frontend, backend, APIs, automation, and cloud delivery. Hands-on background with JavaScript, TypeScript, React, Redux, Node.js, Express.js, MongoDB, REST APIs, responsive UI development, and scalable backend services, supported by Java/Spring Boot and cloud platforms. Built reusable application components and automation workflows that improved validation coverage by 70%+, reduced manual regression effort by 50%, and shortened release cycles by 40%. Strong in debugging, code reviews, asynchronous collaboration, performance tuning, and understanding AI-assisted code while keeping application behavior and code quality reliable.…Software Engineer with 8+ years of experience building enterprise web applications across frontend, backend, APIs, automation, and cloud delivery. Hands-on background with JavaScript, TypeScript, React, Redux, Node.js, Express.js, MongoDB, REST APIs, responsive UI development, and scalable backend services, supported by Java/Spring Boot and cloud platforms. Built reusable application components and automation workflows that improved validation coverage by 70%+, reduced manual regression effort by 50%, and shortened release cycles by 40%. Strong in debugging, code reviews, asynchronous collaboration, performance tuning, and understanding AI-assisted code while keeping application behavior and code quality reliable.

Arjavkumar Virani

Full Stack Developer, Back-End Developer, Front-End Developer, +5

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Software Engineer with 8+ years of experience building enterprise web applications across frontend, backend, APIs, automation, and cloud delivery. Hands-on background with JavaScript, TypeScript, React, Redux, Node.js, Express.js, MongoDB, REST APIs, responsive UI development, and scalable backend services, supported by Java/Spring Boot and cloud platforms. Built reusable application components and automation workflows that improved validation coverage by 70%+, reduced manual regression effort by 50%, and shortened release cycles by 40%. Strong in debugging, code reviews, asynchronous collaboration, performance tuning, and understanding AI-assisted code while keeping application behavior and code quality reliable.…Software Engineer with 8+ years of experience building enterprise web applications across frontend, backend, APIs, automation, and cloud delivery. Hands-on background with JavaScript, TypeScript, React, Redux, Node.js, Express.js, MongoDB, REST APIs, responsive UI development, and scalable backend services, supported by Java/Spring Boot and cloud platforms. Built reusable application components and automation workflows that improved validation coverage by 70%+, reduced manual regression effort by 50%, and shortened release cycles by 40%. Strong in debugging, code reviews, asynchronous collaboration, performance tuning, and understanding AI-assisted code while keeping application behavior and code quality reliable.

Available to hire

Software Engineer with 8+ years of experience building enterprise web applications across frontend, backend, APIs, automation, and cloud delivery. Hands-on background with JavaScript, TypeScript, React, Redux, Node.js, Express.js, MongoDB, REST APIs, responsive UI development, and scalable backend services, supported by Java/Spring Boot and cloud platforms.

Built reusable application components and automation workflows that improved validation coverage by 70%+, reduced manual regression effort by 50%, and shortened release cycles by 40%. Strong in debugging, code reviews, asynchronous collaboration, performance tuning, and understanding AI-assisted code while keeping application behavior and code quality reliable.

Skills

Experience Level

Expert

Expert

Expert

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Expert

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Expert

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Intermediate

Intermediate

Language

Gujarati

Fluent

Hindi

Fluent

English

Fluent

Javanese

Advanced

Work Experience

Senior Software Engineer at Cognizant

November 1, 2024 - Present

Designed and built enterprise application features and microservices across TypeScript-based automation, backend services, APIs, cloud data workflows, and CI/CD delivery. Integrated AI-driven development workflows using LLMs and implemented a custom MCP server for context-aware LLM automation and automated unit-test generation for Django, improving repeatable validation coverage by 70%. Maintained an end-to-end validation framework using TypeScript/WebdriverIO/Appium for web, Android, and REST journeys in a single run. Set up nightly CI with Bitbucket Pipelines and Sauce Labs including database validations (PostgreSQL and MSSQL), reducing manual regression effort ~50%. Implemented AI-assisted DevSecOps practices using Claude, GitHub Advanced Security, GitHub Actions, and Jenkins, and built cloud ETL solutions across AWS/Azure using Databricks, Azure Data Factory, SSIS, Spark, and HDFS. Developed and debugged test suites using Selenium/TestNG/JUnit with root-cause analysis across logs,

Senior Project Associate at Cognizant

November 1, 2024 - November 12, 2025

Led a 2TB+ user data migration from MySQL to MongoDB with an optimized document model and compound indexes, enabling 40% faster queries. Prototyped a Vue.js + Django payment prototype integrated with Stripe, reducing processing time from 2.4s to 1.8s (25% faster). Implemented Docker Compose for streamlined onboarding (2 hours to 90 minutes). Built an AI tool for model fine-tuning and Retrieval-Augmented Generation (RAG) handling 500K+ monthly queries with 95% accuracy, reducing setup time by 60%.

Senior Project Associate at Cognizant

November 1, 2024 - November 7, 2025

Led 2TB+ user data migration from MySQL to MongoDB with an optimized document model and compound indexes, accelerating queries by 40%. Pioneered a Vue.js + Django prototype integrated with Stripe to enhance payment processing efficiency, reducing processing time from 2.4s to 1.8s (25% faster). Created Docker Compose setup, cutting developer onboarding time from 2 hours to 90 minutes. Founded an AI tool enabling users to customize models via fine-tuning and Retrieval-Augmented Generation (RAG), handling 500K+ monthly queries with 95% accuracy and cutting setup time by 60%.

Senior Full Stack Developer at Infosys

October 1, 2024 - October 1, 2024

Led T-Mobile Customer Care Tool (Node.js + React) serving 50K+ daily agent sessions with 99.99% uptime, coordinating with stakeholders to align requirements. Guided teams through CloudWatch and Dynatrace integration, enabling auto-scaling that handled 3x traffic spikes without downtime. Automated CI/CD pipelines, reducing deployment time from 45 minutes to 7 minutes (84% faster). Optimized DIRECTV APIs, cutting content load time by 32% for 10M+ monthly users. Orchestrated authentication, S3 file uploads, profile management, analytics, and data pipelines, improving user experience by 45%. AWS Lambdas to maintain 500GB+ database tables and built a staging environment with an Electron app, supporting 500+ daily test cycles. Supervised AWS API Gateway, Lambda, RDS, and Node.js scaling, expanding GPU miner support from 200 to 2,000 units (900% growth).

Senior Full Stack Developer at Infosys

July 1, 2022 - October 1, 2024

Developed core application features for the MyRogers customer platform using React, Redux, Java/Spring Boot, and REST APIs across account management, billing, notifications, and customer-service workflows. Built responsive React/Redux interfaces with reusable components, routing, forms, client-side validation, and cross-browser support. Developed Spring Boot REST APIs using Java 8+ features including streams/lambdas, DTO mapping, bean validation, and centralized exception handling. Integrated and tested REST and SOAP services using Postman, REST Assured, and SoapUI, supporting more reliable service validation and improving regression/release cycles by ~40%. Built Ruby on Rails scripts and utilities for high-volume data transformation and migration reconciliation with SQL queries to validate source/target datasets, support dry runs, rollback checks, and post-release verification. Extended automated coverage for mobile journeys using Selenium WebDriver and Appium with Page Object Model p

Blockchain and Full Stack Developer at Audace Labs

June 1, 2022 - June 1, 2022

Developed and audited TribeOne smart contracts (exchange agent, reinsurance pool, risk pool, synthetic pool) using Solidity, Hardhat and OpenZeppelin, mitigating vulnerabilities like reentrancy and gas limit issues, achieving 20% lower gas costs. Diagnosed and resolved backend issues in TribeOne, proposing and implementing optimizations that lifted performance by 25%. Integrated React frontend with TribeOne smart contracts via Web3.js, enabling seamless Web2/Web3 interaction, improving user transaction speed by 30%, and enhancing security with validated inputs. Crafted backend API schemas and a mock API, accelerating frontend development by 40%.

Full Stack Developer at Systenity Infomedia

May 1, 2021 - May 1, 2021

Revamped 8-language portal, boosting page throughput from 42 RPS to 71 RPS (69% gain). Architected GCP + Supabase backend, achieving 99.9% uptime over 24 months. Released TypeScript migration across 120K LOC, cutting runtime errors by 41% through collaborative code reviews. Replaced REST with GraphQL API, reducing frontend data calls by 30% (1.2s → 0.8s).

Backend Engineer at Systenity Infomedia

January 1, 2020 - June 1, 2022

Developed and maintained backend applications using ASP.NET and C#, including RESTful APIs and backend services for frontend and third-party integrations. Built and optimized SQL Server queries, stored procedures, and data-access logic for transactional and reporting workflows. Implemented authentication/authorization, validation, exception handling, and logging to improve security and reliability. Optimized API performance and database queries to address production bottlenecks. Integrated external services handling JSON/XML payloads and error-recovery scenarios. Wrote unit and integration tests to reduce regression defects and collaborated with frontend and QA teams to translate requirements into reliable backend solutions, participating in code reviews and release support.

Full Stack Developer at Intelli Sai Consulting

December 1, 2018 - December 1, 2018

Built 6 Java/JS web apps forming foundation for React/Vue adoption in later roles. Designed MySQL schemas supporting 100K+ daily records with 99% uptime. Analyzed and fixed 15+ critical bugs, reducing monthly incidents from 22 to 3 (86% drop).

Full Stack Developer at Intelli Sai Consulting

January 1, 2017 - December 1, 2018

Developed full-stack web applications using Node.js, Express.js, React, and JavaScript with responsive UIs and scalable backend services. Designed and implemented RESTful APIs, business logic, and server-side integrations for web application workflows and third-party services. Built reusable React components and managed frontend state while integrating with Node.js backend APIs. Worked with relational and NoSQL databases to design schemas, optimize queries, and ensure reliable application data processing. Collaborated with QA and design teams to troubleshoot issues, improve performance, and deliver production-ready features.