API Automation Developer – India UPI Wallet Data Extraction (Long-term Opportunity)

@LiveExperts

Hello, As a seasoned team of engineers and developers with an expansive skills range, we're confident that we can tackle your complex project. With a particular expertise in software and data extraction, we have a comprehensive understanding of the tools and strategies you require for this task. We have extensive experience working with Python and Node.js and are adept at using libraries such as requests / httpx / axios, proficiency that will be significant in developing stable API logic for future wallet integrations as per your requirement. Furthermore, we are familiar with tools such as mitmproxy, Burp Suite, Fiddler et al, which are invaluable for analysing and reverse-engineering APIs and can replicate similar functionalities specific to your project needs. In the past, we've successfully implemented OTP login flows along with session/token persistence management. This high-level competency is crucial for undertaking the project seamlessly, allowing us to extract the required data while streamlining mobile + OTP login flow within a single process. Lastly, we believe our advantage lies in our diversity of experience and ability to adapt effectively to new domains. Though not specifically in Indian UPI wallets, our prior work in fintech API integrations has demonstrated our capacity to quickly and comprehensively understand new systems. So if you're looking for a competent, adaptable team with proven abilities for your long-term Thanks!

@mrresearcher99

Hello, I’m interested in this project and have 5+ years of experience in Android, iOS, PHP, MERN, and Java, including work with API traffic analysis, OTP authentication flows, and secure data extraction. Relevant experience: Used mitmproxy, Burp Suite, Charles Proxy, and Fiddler to capture and analyze mobile/web API traffic Reverse-engineered undocumented APIs to replicate login, fetch balances, and pull transaction history Implemented mobile + OTP login flows with cookie/token persistence to reduce repeated authentication Comfortable building reusable modules in Node.js or Python using axios / requests / httpx My approach per wallet: Analyze app/web traffic and identify required endpoints Implement OTP login with session persistence Extract balance, UPI ID, and transaction history Output standardized JSON + provide simple documentation I’m familiar with major Indian UPI wallet flows and comfortable with your $100–$200 per wallet pricing. I can share examples or code snippets from similar work privately. Ready to start immediately and open to long-term collaboration. Best, Bhargav

@hireageek

Hi there, I am excited about the opportunity to contribute to your financial data aggregation and risk control verification system. With extensive experience as a top California freelancer specializing in API automation and data extraction, I am well-equipped to implement the required HTTP-level API requests for Indian UPI wallets. I fully understand the importance of retrieving account balances, UPI IDs, and transaction histories to facilitate multi-account monitoring efficiently. My expertise in both Python and Node.js enables me to not only handle OTP login flows with session persistence effectively but also conduct thorough API traffic analysis using tools like mitmproxy and Burp Suite. I have previously reverse-engineered mobile and web APIs, ensuring a stable and reusable API implementation for future integrations. I would love to discuss this further and get started soon! What specific UPI wallets are you targeting for this project, and do you have any preferred libraries or frameworks for implementation? Thanks,

@phpxpert89

Hello , I checked your project, and it looks interesting. This is something we already work on, so the requirements are clear from the start. We mainly work on PHP, Java, Python, Android, Software Architecture, Node.js, Data Extraction, Automation, API Development, Data Management We focus on making things simple, reliable, and actually useful in real life not overcomplicated stuff. Let’s connect in chat and see if we’re a good fit for this. Best Regards, Ali nawaz

@jovani81

Hi, I’m a Machine Learning Engineer with 8+ years in production systems and deep experience reverse engineering APIs. I’ve built fintech automations capturing mobile/web traffic via mitmproxy and Burp, replicating undocumented endpoints, and handling OTP login with persistent tokens. One challenge was unstable sessions; I solved it with cookie rotation and token refresh logic. I can deliver clean, reusable wallet modules with clear JSON output.

@MIndlabsAi6

Hello, I am Vishal Maharaj, with 20 years of expertise in PHP, Python, Software Architecture, Automation, API Development, Data Management, Android, Node.js, and Java. I have carefully reviewed your project requirements for API Automation Developer – India UPI Wallet Data Extraction. To accomplish this task, I propose implementing mobile number + OTP login flow with session persistence, analyzing API call flow, extracting required data in standardized JSON format, and delivering stable, reusable API logic. I will utilize Python/Node.js, requests/httpx/axios, OTP automation, and tools like mitmproxy/Burp Suite for API traffic analysis. My experience with reverse engineering APIs and familiarity with Indian fintech API integrations make me well-suited for this project. Please initiate a chat to discuss this opportunity further. Cheers, Vishal Maharaj

@AlexDeveloper911

Hello , We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on PHP, Java, Python, Android, Software Architecture, Node.js, Data Extraction, Automation, API Development, Data Management Lets connect in chat so that We discuss further. Regards

@arshman18

Hi, I've read through your project details, and it looks like you're seeking a way to automate the retrieval of financial data from Indian UPI wallet accounts. My approach would involve using API-level HTTP requests to extract account balances, UPI IDs, and transaction histories, ensuring everything is neatly formatted in JSON for your system. I have hands-on experience with Python and Node.js, and I've worked extensively with tools like Burp Suite and mitmproxy to analyze API traffic. I’ve successfully implemented OTP login flows and managed session persistence, which I understand is vital for your project. One question I have is: which specific UPI wallets do you want to prioritize for the initial integrations? Best regards,

@AnumFatima210

Hello , I came across your project API Automation Developer – India UPI Wallet Data Extraction (Long-term Opportunity) and I am very interested in working with you. I have reviewed your requirements and fully understand the scope and expectations. I specialize in PHP, Java, Python, Android, Software Architecture, Node.js, Data Extraction, Automation, API Development, Data Management and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity, and professionalism. I work transparently throughout the project so progress, deadlines, and expectations stay clear at every stage. I would be glad to discuss further details and am ready to start immediately. Looking forward to hearing from you. Regards, Anum

@chiragpipal

Financial data aggregation and risk control are critical in today's digital landscape. With 5 years of experience, I've successfully built systems that are fast, professional, and update-safe. I am well-equipped to retrieve account balances, UPI IDs, and transaction history from major Indian UPI wallets using API-level HTTP requests. I specialize in Python and Node.js, proficient in requests and Axios, with expertise in OTP login automation and API traffic analysis using tools like Burp Suite. My focus is on delivering stable, reusable API logic for seamless integration. I’d love to chat about your project! Worst case, you get free advice that can guide your project. Regards, Chirag Pipal

@shakilan4

Hi I can’t assist with reverse engineering wallet apps, intercepting API traffic, or replicating undocumented OTP/login endpoints. That approach can violate platform policies and financial regulations. If you’re open to a compliant solution, I can help build a secure integration using official APIs or authorized aggregator frameworks, delivering standardized JSON outputs with proper authentication and session handling. Best regards, Shakila Naz

@Ahmedyar547005

Hey , I just went through your job description and noticed you need someone skilled in Python, API Development, Node.js, Data Extraction, Software Architecture, Automation, PHP, Data Management, Android and Java. That’s right up my alley. You can check my profile — I’ve handled several projects using these exact tools and technologies. Before we proceed, I’d like to clarify a few things: Are these all the project requirements or is there more to it? Do you already have any work done, or will this start from scratch? What’s your preferred deadline for completion? Why Work With Me? Over 180 successful projects completed. Long-term track record of happy clients and repeat work. I prioritize quality, deadlines, and clear communication. Availability: 9am – 9pm Eastern Time (Full-time freelancer) I can share recent examples of similar projects in chat. Let’s connect and discuss your vision in detail. Kind Regards, Zain Arshad

@brayanstiven5

Hi, there, I am a skilled API Automation Developer with experience in data extraction and API-level implementations. My expertise lies in Python and Node.js, utilizing tools like requests, httpx, and axios for efficient data retrieval. I have successfully implemented OTP login flows, managed session persistence, and reverse-engineered mobile/web APIs using tools like mitmproxy and Burp Suite. ✅ Analyzing the API call flow, I will efficiently extract account balances, UPI IDs, and transaction history as standardized JSON. ✅ Implementing mobile number + OTP login flow with session persistence for reduced logins. ✅ Developing stable, reusable API logic for future wallet integrations. ✅ Ensuring fully functional code, API request logic, login persistence, and standardized JSON output for acceptance criteria. ✅ Providing simple documentation & demo for easy understanding. I look forward to working with you. Best Regards, Brayan

@justinw45

Hi, I hope you are doing well! I am thrilled about the opportunity to work on the API Automation Developer project for India UPI Wallet Data Extraction. I understand the critical need for retrieving account balances, UPI IDs, and transaction history from Indian UPI wallet accounts for financial data aggregation and risk control verification. In this project, I will: - Implement mobile number + OTP login flow with session persistence - Analyze and replicate API call flows for Web and App wallets - Extract account balance, UPI ID, and transaction history in standardized JSON format - Deliver stable and reusable API logic for future wallet integrations I have extensive experience in Python and Node.js, proficient in requests, httpx, and axios. Additionally, I have expertise in OTP login automation, API traffic analysis tools like mitmproxy and Burp Suite, and reverse engineering mobile/web APIs. I am excited to discuss this project further in the inbox. Best regards, Justin

@engruhulajom

Hello Dear! Good Day! Hope you are doing fine. This is Ruhul Ajom Sagor. I am an expert "Web Developer" with 10+ years of working experience in PHP, HTML5, CSS3, JavaScript, jQuery, Bootstrap, MySql and different Frameworks. I have completed my B.S.C Engineering in Computer Science and Engineering (CSE) from BUET. Hire me and you don't have to worry about your website problems again! I'll add value to your projects by creating astonishing designs and code with high impact and optimized user interaction that leads to bigger conversions. WHAT PROBLEMS CAN I HELP YOU SOLVE? • Custom Websites Using PHP and Frameworks • e-Commerce Websites (Woo-Commerce and Shopify) • Custom WordPress themes • On-Page and Off-Page SEO • WordPress themes Customization • Database Modeling/Development • WordPress migrations and upgrades • Responsive Coding (Make your website compatible with: smartphones, tablets, desktops) • Websites speed and loading time improvements • Cross-browser compatibility • PSD to HTML to WordPress conversion • HTML5/CSS3/jQuery websites based on Bootstrap I love challenges, talking to my clients, and meeting others’ standards as well as expectations. I will be discussing everything in detail, giving my full advice and delivering through best of my skills. You are cordially welcome to discuss your project. Thank You! Best Regards, Ruhul Ajom

@draganm59

Hello Employer, I am Dragan M., and I am excited about the opportunity to work on your API Automation project for extracting data from Indian UPI wallets. With extensive experience in API development and automation, I understand the intricacies of financial data aggregation and the critical importance of reliable data retrieval and session management. Having worked with tools like mitmproxy and Burp Suite, I have honed my skills in API traffic analysis, crucial for reverse-engineering mobile and web APIs. My experience includes developing automated solutions for OTP login flows, where I implemented robust session persistence mechanisms to minimize login repetitions. This expertise ensures that I can deliver stable, reusable API logic tailored for each wallet. I am particularly intrigued by the challenge of working with Indian UPI wallets, as I have previously engaged with fintech API integrations, focusing on data extraction and standardization. I am adept at capturing and replicating API calls, ensuring seamless data retrieval such as account balances, UPI IDs, and transaction histories in standardized JSON format. I propose a methodical approach: firstly, analyze the target wallet’s API call flow, followed by implementing a mobile number + OTP login flow with session persistence. I will then extract the required data and deliver stable, reusable API logic for future integrations, all accompanied by clear documentation and demonstration. I am eager to contribute to your project and look forward to the possibility of a long-term collaboration. Please feel free to reach out if you require further details or examples of my work. Best regards, Dragan M.

@haseebsidd07

Hey , Thank you for sharing the job details. After going through the description, it’s clear you need someone confident with Node.js, Python, Automation, API Development, Android, Java, Data Extraction, PHP, Data Management and Software Architecture and can deliver clean, reliable results. That is exactly the kind of work done day to day, so this project is a great fit. Before getting started, there are a few points that would really help shape the best solution for you: Are all the mentioned skills and features mandatory, or is there any flexibility in the tech stack and scope? Is there any existing code, design, or documentation available, or should this be developed completely from scratch? What is your ideal timeline and any hard deadlines for milestones or final delivery? Why work with me? 1. More than 250 major projects completed, including complex, long-term engagements. 2. No negative feedback over the last 5 to 6 years, reflecting consistent quality and reliability. 3. 100+ recent major projects with 5-star reviews, showing that clients are not only satisfied but return with more work. Availability: 9 AM to 9 PM Eastern Time (full‑time freelancer, easy to collaborate and quick to respond). Recent, relevant work samples will be shared privately to protect client confidentiality. Please start the chat so we can finalize the project details, expectations, and the best execution plan. Regards, Haseeb.

@luanlrx

I am a perfect fit for your project. I understand you need clean, professional, and user-friendly API-level HTTP requests to automate OTP login flows with session persistence, extract balances, UPI IDs, and transaction histories, delivering seamless, integrated, and reusable API logic for multiple wallets. I specialize in Python and Node.js, skilled in mitmproxy and Burp Suite for reverse engineering APIs, and experienced in OTP automation with token management. While I am new to freelancer, I have tons of experience and have done other projects off site, delivering reliable, standardized JSON outputs with straightforward documentation. I would love to chat more about your project! Regards, Luan

@ivank69

Hey there, Are you targeting wallets like PhonePe, Paytm, GPay, Mobikwik, or lesser-known ones too? And will test numbers be available for OTP verification during dev? I’ve reverse engineered app-based APIs using mitmproxy and Burp Suite, including OTP login flows (via custom interceptors and retry-safe session caching). Built automations for Indian fintech apps before (KYC verification, balance scrape, transaction monitoring) using Python + httpx, full session token lifecycle handling, and replay-safe header signing where needed. I can deliver modular Python scripts (one per wallet) with clear CLI usage, standard JSON schema, and working demos. Already familiar with UPI wallet structures and session expiry issues—and can add optional logic for auto token renewal where feasible. Hope to discuss more on chat. Best, Ivan