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Freelance Integration Testing Developer - Rajesh Dhiman
Freelance Integration Testing Developer5.0 (24 reviews)

Is your AI-powered MVP built on a fragile 'vibe-coded' foundation? Are you struggling to scale a prototype that was built with lightning speed but is now plagued by bugs, security holes, and technical debt? I transform brittle AI prototypes into robust, **production-ready applications**. As a senior AI engineer specializing in the **Node.js** and **React** ecosystem, I bridge the gap between rapid, AI-assisted development and the disciplined engineering required for scalable, secure software. But robust software is only half the battle. The other half is making it *work for your business*. I design and implement **intelligent automation workflows** that connect your apps, eliminate manual tasks, and free up your team to focus on high-impact work. Whether you need to rescue a failing project, automate a core business process, or build a scalable MVP from the ground up, I provide the expert oversight to ensure your AI initiatives deliver real, measurable value. **My Core Services:** * **🤖 AI Code Rescue & Remediation:** I conduct deep **AI code audits** to debug, refactor, and secure fragile codebases (especially those built with LangChain.js). I turn unmaintainable prototypes into stable, scalable assets ready for real users. * **⚙️ Intelligent Workflow Automation & Integration:** I design and build digital assembly lines for your business. I offer a full spectrum of automation solutions: * **Rapid Integration:** Using **Zapier, Make.com & n8n** to connect your existing tools and solve immediate process bottlenecks. * **Custom API Development:** Building custom **Node.js** APIs and webhooks to connect proprietary systems or handle complex logic that no-code tools can't. * **AI-Powered Decisions:** Infusing your workflows with intelligence using the **OpenAI API** to triage support tickets, qualify sales leads, or generate content automatically. * **🚀 Custom AI Solution Development:** I architect and build bespoke AI solutions from scratch, from **Custom GPTs** and intelligent **AI Agents** to complex RAG (Retrieval-Augmented Generation) pipelines that leverage your private data. * **👨‍🏫 AI Engineer & Career Mentorship:** I provide 1-on-1 coaching to help developers navigate the AI landscape, master tools like LangChain.js, and build a successful career in AI engineering and automation. **My Tech Stack:** * **Languages:** Node.js, TypeScript, JavaScript * **Frameworks:** React, Next.js, Express.js, NestJS * **AI / LLM:** LangChain.js, OpenAI API, LlamaIndex, Vector Databases (Pinecone, Qdrant) * **Automation Platforms:** Zapier, Make.com, n8n Ready to move past the prototype phase and build a real business? **Send me a message with your project details or book a session to get started.** --- ### Service Packages * **Package 1: AI Code Audit & Production-Ready Roadmap** * **Description:** Have an AI-generated MVP that feels unstable? I'll perform a comprehensive review of your codebase. You'll receive a detailed report identifying security vulnerabilities, performance bottlenecks, and a concrete, actionable roadmap to make your application **production-ready**. This is the perfect first step to de-risk your project. * **Package 2: Intelligent Automation Workflow** * **Description:** Let's put a core business process on autopilot. We'll map out a high-impact workflow and I'll build a robust automation to solve it. Ideal for **automating lead qualification**, **triaging customer support tickets**, or **streamlining content pipelines** using the best tool for the job—Zapier, Make, or custom Node.js scripts. * **Package 3: Scalable AI MVP Development** * **Description:** Need to build an MVP the *right* way? I'll architect and develop a **scalable MVP** from day one, using professional, spec-driven development practices. We'll build a strong foundation with clean, documented code and a modern stack (Node.js, React) to avoid the technical debt that plagues "vibe-coded" projects.

Freelance Integration Testing Developer - syed saqib ghawas
Freelance Integration Testing Developer4.9 (316 reviews)

Hello I have been working in the market for the past 10 years. in the field of Database, SQL, Oracle, SQL Server, MySQL, NOSQL,DWH,ETL ,reporting and BI tools. Have knowledge of multiples domain areas such as Finance & banking ,Telecom, health care, Tax & Legal and FMCG

Freelance Integration Testing Developer - Rengaraj
Freelance Integration Testing Developer5.0 (2 reviews)

I have experience in Python for more than 10+ years. I have been using Python in Embedded systems. I have experience in Making Test setup for various Embedded device for automation testing.

Freelance Integration Testing Developer - Christian Ray Leovido
Freelance Integration Testing Developer5.0 (89 reviews)

Software Contractor and Senior iOS Engineer (Swift, RxSwift, SwiftUI, Combine, UIKit) Mentoring and focusing on the essentials, foundations and best practices of Software engineering and development. Swift, SwiftUI, clean code, Test Driven Development, Design Patterns, Software principles. Expert with MVVM, VIPER and The Composable Architecture (TCA) and more architectures. Building and deploying Startup and Enterprise apps to the App Store. Born in Spain🇪🇸, living in the UK🇬🇧, originally from the Philippines🇵🇭. - 8+ years of commercial experience building iOS applications in Swift. - Full Stack Developer. MERN stack. Cypress, Jest - 3 years of experience with React Native and bridging applications from Swift to React Native. _________________ Are you a freelancer looking to build a new app? Do you need a prototype for an app? Do you have a design and need a developer to build your app? Are you a company looking to outsource or build an app? Let's talk if you answered yes to any of the above questions. I provide solutions for startups offering the best options to save you time and keep your business growing. _________________ **Paradigms**: Object-oriented and Functional/Reactive programming. Creating meaningful and enjoyable UI transitions to keep the user engaged and access their data in real-time. Worked on production apps extensively with: - Swift - SwiftUI - Combine - Async/await - RxSwift - Firebase - Node.js - Cocoapods - Swift Package Manager Fundamental knowledge and teaching software architectures: - **MVC** (Model, View, Controller) - **MVVM** (Model, View, View Model) - **TCA** (The Composable Architecture) Software design principles: SOLID to improve orthogonality, flexibility and reusability of components. Communication of **data** from view controllers to any other view such as UIAlertController, container views, UITableViewCells, UICollectionViewCells, etc. Options to communicate data can be achieved through the use of weak delegates + Segues with Storyboards. Other options include using Databases. **Storage** - Firebase Real-time database, Firestore. - MongoDB, - UserDefaults - CoreData - Custom API (Facebook, Google, Github, your website, etc.) Alternatively offering a different solution programmatically without using Segues from Storyboards to increase performance and code maintainability. Several presentation styles, modals, over current context, custom, etc. with animations. Native components are the way to go with performance and maintenance. Working with UIKit, Foundation, SwiftUI - UITableView + Headers + Footers and custom UITableViewCell - UICollectionView + Headers + Custom UICollectionViewCell - UICollectionViewFlowLayout - Managing the Delegate and Data Source into their own components for efficient unit testing. - SwiftUI Lists and Stacks - iOS 13 and 14 Compositional Layouts in UICollectionView SwiftUI focuses on a declarative way of writing code. Teaching about the essentials of Functional Programming. **Networking** Native iOS - URLSession - Combine Third-party, external - Alamofire - Moya - PromiseKit **Testing frameworks** - XCTest (iOS native) - Quick - Nimble ____ I have experience creating Full stack applications connecting different services and stacks together. From iOS to Firebase, a custom backend and connecting 3rd party APIs to your application. 5+ years of experience building commercial and business iOS apps using different Software Architectures such as MVC and MVVM and following the SOLID principles. Adhering to Test-driven development along with pipeline automation and working closely with the Directors, team and customers to build a stable app on every release. Delivering high-quality products for easy maintenance, robustness, and readability along with applying the Agile principles. iOS networking and REST API implementations to gather data from the backend or other third-party providers.

Freelance Integration Testing Developer - Bhavani Ravi
Freelance Integration Testing Developer5.0 (29 reviews)

I'm a Pythonista who builds backend systems, Devops Automation, and Data Pipelines. I have also contributed to open-source projects like Pandas and Airflow. I am a LinkedIn learning instructor and also run my own PythonToProject 5-week Online Bootcamp. I am a tech speaker and have presented at Pycon Australia, India and Berlin Buzzwords

Freelance Integration Testing Developer - VIVEK SINGH
Freelance Integration Testing Developer5.0 (13 reviews)

Polyglot programmer with experience in developing and delivering end-to-end software which includes development and deployment. **Agile Software Engineer and Certified Kubernetes Application Developer**. My mantra is to ```Learn as much as you can``` Things in which I can help you out with: - **System design** - **Best coding practices** - **Micro-services Architecture** - **Some DevOps magic** - **Kubernetes Application Developer** - **Job Preparation** - **Career progression** - **Study Assignments** I will help you out in integrating any technology easier and faster. I have this belief to make the code as simple as possible which can be easily understandable by many.

Freelance Integration Testing Developer - Guillaume Faas
Freelance Integration Testing Developer5.0 (10 reviews)

Building software has always been a passion of mine. This is still true after almost 15 years of experience in various environments and business sectors. I've never really considered it work but "problems to solve". Yes, I love puzzles or anything that requires you to turn your head around. Passion also means curiosity and hunger for knowledge. I regularly read blogs, articles, and books and practice katas by myself. Some of my favourite authors are Robert C. Martin (aka Uncle Bob) and Mark Seemann. Continuous improvement is a mindset I consider essential. If I had to pick one priority when building a product, I would choose quality. This has always been what I put first. I'm not satisfied when "It Works", it must also be done well. I always tried to improve the team I joined wherever I've been. Whether by providing experience, a fresh eye, ideas, or mentoring younger peers. About mentoring, sharing knowledge represents a key aspect of my participation in a team. I do believe that knowledge is useless if you keep it to yourself. We need to use our knowledge to teach and inspire others, the same way others have inspired us. Putting this all together, it’s quite clear I advocate Software Craftsmanship. Hearing about this ideology for the first time has been one of the biggest milestones in my career. It is the perfect match for what I consider important in terms of mindset. Since then, I’ve continuously tried to spread the ideology by sharing ideas and methodologies. Feel free to take a look at my GitHub account: https://github.com/Tr00d You'll find katas I do for fun or coaching purposes, but you'll mostly see how I code.

Freelance Integration Testing Developer - Joel Longanecker
Freelance Integration Testing Developer5.0 (6 reviews)

I have been working in .net and javascript since 2008. I am a senior developer looking to mentor students and other new programmers. Let me help you understand the things that are driving you crazy.

Freelance Integration Testing Developer - Riya Bhandekar
Freelance Integration Testing Developer

Dedicated professional with demonstrated strengths in Software Design, Architecture and independently working on all phases of software development. Good at troubleshooting problems and building successful solutions. Usually spend 80-90% of time on hands-on coding work. Excellent at developing proof-of-concepts and learning new technologies. Dependable employee seeking opportunity to expand skills and contribute to company success. Considered hardworking, ethical and detail-oriented. Passionate and skilled blockchain developer with a strong focus on **Ethereum blockchain and smart contract design, development, and integration with front-end Web3 applications**. Proficient in Java, JavaScript, Solidity, and various development tools such as Hardhat, Mocha, Remix IDE, Visual Studio IDE, Truffle, Ganache, and MetaMask, with a proven track record of debugging and resolving complex code errors. Hands-on experience in front-end Web3 development using Node, ReactJS, NextJS, and Ethers.js/Web3.js. Worked on ERC Token development and various token protocols like **Token swapping using UNISWAP**, and handling token purchase and transfer. Independently developed a **web wallet, Crypto Keeper**, similar to the MetaMask wallet. Recently working on integrating the **WalletConnect protocol** into Crypto Keeper, so that we can pay with cryptocurrency from any DAPP. Hands-on completion of multiple Udemy courses across different areas of blockchain technology with a strong GitHub project portfolio. Proud holder of an **online professional certificate in Blockchain from the Indian Institute of Technology Kanpur, INDIA** (Online Blockchain Course \[2025\] - in collaboration with SimpliLearn). Developed multi-technology blockchain projects and capstone projects for this certification, including domains like Solidity smart contracts and Hyperledger Chaincode. Committed to advancing technological innovation and contributing to transformative solutions. Enthusiastic about utilizing technical expertise to elevate mission-driven projects and foster impactful advancements in blockchain technology. My profile [Riya Bhandekar | LinkedIn](https://www.linkedin.com/in/riya-bhandekar-5ba01956/)

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Frequently asked questions

How long do Integration Testing projects normally take?

The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Integration Testing project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Integration Testing request on Codementor, check out our article.

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We don’t charge anything when you post a freelance hiring request for Integration Testing developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.

What makes Codementor Integration Testing developers different?

We do a comprehensive technical and communications screen of all Integration Testing developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Integration Testing developers’ user satisfaction rates.

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