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I’m upgrading the core functionality of my platform and need a developer who can focus on three areas: robust user authentication, seamless payment processing, and insightful data-analytics integration. 1. User authentication My current login flow is basic and I’d like to expand it. Email + password is a must, but I’m open to adding social logins or even 2-factor security if you feel it strengthens the stack without over-engineering things. 2. Payment processing Transactions will run directly inside the app, so I need secure, PCI-compliant payment handling with clear error reporting and webhook support for status updates. Experience with Stripe or a comparable gateway is preferred. 3. Data analytics integration I want actionable metrics—not vanity numbers. Help me wire up an analytics solution (Google Analytics 4, Mixpanel, or another option you recommend) that tracks user behaviour from sign-up through checkout and surfaces it in easy-to-read dashboards. Acceptance criteria • Auth flow is live, tested, and secure. • Payments process end-to-end in both sandbox and production modes. • Analytics events fire accurately and appear in the chosen dashboard. Code should be clean, documented, and committed to my Git repo via pull requests so I can review each milestone. Let me know which frameworks, SDKs, or APIs you plan to use and a realistic timeline to get this shipped.
Project ID: 40730398
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183 freelancers are bidding on average €25 EUR/hour for this job

Hello, I understand that you are looking to enhance your platform's user authentication, payment processing, and data analytics integration. As a developer specializing in full-stack solutions, I can offer a comprehensive approach to address your needs. For user authentication, I will implement a robust system that includes email + password login along with optional social logins and 2-factor authentication for added security without complicating the user experience. In terms of payment processing, I have expertise in integrating secure, PCI-compliant solutions like Stripe to ensure seamless transactions within your app. I will also set up clear error reporting and webhook support for real-time status updates. Regarding data analytics integration, I will configure a solution such as Google Analytics 4 or Mixpanel to provide actionable insights into user behavior from sign-up to checkout, presented in user-friendly dashboards. I am committed to delivering clean, well-documented code through Git repositories for your review at each milestone. My approach will prioritize security, usability, and performance to meet your acceptance criteria effectively. Feel free to review my portfolio here: https://www.freelancer.com/u/Microlent If you have any questions or would like to discuss further, please don't hesitate to start a chat. Sincerely, Rajesh
€18 EUR in 40 days
9.5
9.5

As someone who has built a robust portfolio of high-quality apps and websites, I'm more than equipped to tackle the challenges presented in your project. I am highly proficient in API integration, which will allow me to not only enhance your current user authentication system with those highly-requested features like social logins and two-factor security but also seamlessly integrate whatever payment processing system you desire. Having prior experience with payment gateways like Stripe will also ensure PCI-compliance and smooth, error-free transactions. Additionally, in my career, I've always had a keen interest in data analytics. I understand the importance of actionable insights and can leverage this knowledge to set up immersive analytics solutions tailored exactly to your needs. Whether it's Google Analytics or Mixpanel or an even better recommendation specific to your platform, I've got you covered. Tracking user behavior and surfacing these metrics through user-friendly dashboards is called second nature for me. Finally, my attitude towards development aligns perfectly with what you seek - clean code, clear documentation, rigorous testing procedures via pull requests so you review every milestone.
€27 EUR in 40 days
9.5
9.5

Login → payment → analytics should feel like one reliable system, not three disconnected features. I can strengthen your platform with secure authentication, Stripe/payment webhooks, and end-to-end analytics tracking without adding unnecessary complexity. I will handle auth security, payment error handling, webhook flows, GA4/Mixpanel events, testing, documentation, and clean Git PRs across sandbox and production. Quick Questions Is the current platform built with PHP, JavaScript, or a specific framework? Are Stripe and your analytics account already configured? I can start with the existing codebase and improve it cleanly.
€18 EUR in 40 days
8.2
8.2

Hi, To upgrade the core functionality of your platform, I will enhance user authentication, implement secure payment processing, and integrate insightful data analytics. For user authentication, I will implement a system using JWT for token-based authentication, allowing for email/password login and the addition of social logins through OAuth 2.0. I will also consider integrating 2-factor authentication using Google Authenticator to enhance security without complicating the user experience. For payment processing, I will utilize the Stripe API to handle transactions securely, ensuring PCI compliance. I will set up webhooks for real-time transaction status updates and implement error reporting to provide clear feedback during the payment process. For data analytics, I recommend using Google Analytics 4 to track user behavior from sign-up to checkout. I will configure event tracking and create custom dashboards to present actionable metrics, ensuring that the data collected is meaningful and easy to interpret. I will need access to your Git repository to commit code and a list of any existing frameworks or libraries you are currently using. Additionally, please confirm if you have a preferred analytics solution or if I should proceed with Google Analytics 4. Thanks!
€25 EUR in 40 days
8.3
8.3

Hi, I can handle the three core areas of your platform: authentication, secure payment processing and actionable analytics, while keeping the implementation clean and easy to review. For authentication, I’ll implement secure email/password login and can add social login or 2FA if it fits the existing architecture without unnecessary complexity. For payments, I’d use Stripe or the appropriate gateway for your current stack, including secure checkout, sandbox/production configuration, webhook handling, payment-status updates and clear error handling. For analytics, I’ll set up GA4 or Mixpanel with a proper event structure covering the user journey from registration through checkout, so you can measure meaningful actions rather than just page views. I’ll work through your Git repository using pull requests for each milestone, with testing and documentation included. I’ll also verify the complete authentication, payment and analytics flows before final delivery. I can review your existing stack first and confirm the exact SDKs/APIs and milestone plan before implementation.
€27 EUR in 40 days
8.1
8.1

Hi, I understand you need to strengthen your platform in three connected areas: secure email/password authentication, reliable in-app payments, and useful tracking from sign-up through checkout. I can plan the flow so these parts work together without adding unnecessary complexity. I would use a clean backend structure with Java or PHP as suitable for your current stack, JavaScript for the user-facing integration, and the payment provider’s SDK and webhooks for safe status updates. I will also set up sandbox and production handling, clear error responses, tested analytics events, and a simple dashboard that helps you see where users drop off. Each milestone can be committed through pull requests with notes and tests for review. What backend framework, database, and payment gateway are currently used, and should social login or two-factor authentication be included in the first release? I will first review your existing authentication and payment code, then build and test each part step by step before production release.
€21 EUR in 33 days
7.4
7.4

Hi, I can help you with "Enhance Platform Auth & Payments" as per your given project description. We can discuss more in detail during a chat conversation when you are available. I've worked on many PHP projects in recent times. So I am confident on achieving your expected Goals. Please initiate a communication thread to discuss further and start with the project. ⭐ 5.0/5 from a recent client: "A more professional version: “Excellent work! The job was completed within the committed timeline. Great quality, professionalism, and timely delivery. Highly appreciated and recommended.”" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
€22 EUR in 1 day
7.7
7.7

You’re not just adding features here—you’re strengthening three areas that can break trust fast if they’re loosely connected: login security, in-app payments, and decision-grade analytics. The main thing I’d avoid is overbuilding the stack while still leaving blind spots around webhook failures, auth edge cases, or missing conversion events. My first step would be to review the existing flow and then implement only the right layers needed for secure access, stable transactions, and usable reporting. I’ve done similar work around Stripe payment flows, event tracking, and authentication updates where the client needed production-safe handling plus clear documentation in Git. PR-based collaboration works well for this kind of job because each layer can be reviewed and tested in sequence. - What does your current auth system use today: custom auth, Firebase, Auth0, or something else? - Should analytics cover just signup-to-checkout, or do you also want post-purchase events and retention behaviour included? - Do you already have sandbox and live payment credentials ready for staging and release?
€20 EUR in 40 days
7.8
7.8

Hello, AUTHENTICATION, PAYMENT & ANALYTICS {{{ I HAVE CREATED SIMILAR INTEGRATIONS BEFORE AND I CAN SHOW YOU }}} I have 11+ years of development experience and can upgrade your platform with secure email/password authentication, optional social login/2FA, reliable payment processing, and event-based analytics. I will implement Stripe with secure transactions, webhook handling, error management, and sandbox/production testing. I will also configure GA4 or Mixpanel to track the complete user journey from signup to checkout and provide clear actionable dashboards. The work will be tested, documented, and committed to your Git repository through pull requests for milestone-wise review. I WILL PROVIDE 2 YEARS OF FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE. Thanks, Christina
€18 EUR in 40 days
7.5
7.5

Ready to start now --- I can enhance the core functionality of your platform specifically focus on three areas that you mentioned in description. Give me chance to show you 100% result. Thanks
€18 EUR in 40 days
6.7
6.7

Hi there, I see that you're looking to enhance your platform with robust user authentication and seamless payment processing. For the user authentication, I can implement a secure flow that includes email/password as well as social logins and 2-factor authentication, leveraging my experience with secure frameworks. For payment processing, I’m well-versed in Stripe's API, ensuring full PCI compliance and effective error reporting. I can also integrate a data analytics tool like Google Analytics 4 to track user behavior accurately from sign-up to checkout. All code will be organized and documented, and I will keep you updated through Git commits for each milestone. Happy to discuss the frameworks and timeline further. Regards, Ali
€18 EUR in 1 day
6.5
6.5

You mention this upgrade covers three areas, but only two are named: auth and payments. Given Google Analytics and data analytics are in your skill list, I'd bet the third is visibility. Most auth and payment upgrades fail quietly. The flows work, but conversion and abandonment data goes missing, so you can't tell what actually improved. I've built payment and auth systems at fintech scale, on the same PHP stack you're using. Stripe webhooks, idempotent charge handling, session management, plus analytics wired in from day one so you see exactly where users drop off. That last piece is usually the difference between a rewrite that helps and one that just rearranges things. I'd start by mapping what exists today and where data is already captured, then build the new flows around what's measurable rather than assumptions. The budget range fits a focused engagement: tackle one area at a time, ordered by what the data says hurts most. Which of the three areas would you want me to start with?
€18 EUR in 7 days
6.6
6.6

Hi, I can help upgrade your platform with secure auth, reliable payments, and analytics that track the full user journey. I’ll keep the auth flow clean with email/password, and add 2FA or social login only if it adds real value. For payments, I’d use Stripe with webhook handling, sandbox/live testing, and clear error reporting. For analytics, I can set up GA4 or Mixpanel and define events from sign-up to checkout so the dashboard shows useful metrics. I’ll work in milestones with documented PRs and a realistic timeline. Regards, Parvesh M.
€18 EUR in 21 days
6.3
6.3

Hello!⚡ Thank you for the clear brief — strengthening auth, wiring secure in-app payments, and adding analytics that show real behaviour rather than vanity numbers is exactly the kind of full-stack work I do. I recently upgraded a platform's login, added Stripe with webhooks, and set up a sign-up-to-checkout funnel in analytics — all committed via reviewable PRs, so this maps closely to what you need. How I'd approach yours: 1. Expand auth — hardened email/password, optional social logins and 2FA, kept simple, not over-engineered. 2. Add PCI-compliant Stripe payments using Elements so card data never touches your server, with clear error reporting. 3. Wire webhooks for reliable status updates, and prove payments end to end in both sandbox and production. 4. Integrate GA4 or Mixpanel to track the sign-up-through-checkout journey, surfacing actionable metrics in clean dashboards. 5. Keep code clean and documented, committed to your repo as per-milestone pull requests you can review. 6. Confirm the exact SDKs and APIs and a realistic timeline before I start. I'd gladly share my stack choices and milestone plan up front, and make this a success with you. Thanks. Hassan
€30 EUR in 40 days
6.5
6.5

As a seasoned full-stack developer, I bring a comprehensive set of skills to the table that make me an ideal fit for your project. I've built robust websites and mobile apps using frameworks such as JavaScript, React, Node.js, PHP/Laravel as well as familiarized with payment processing gateways like Stripe. My previous engagements have often demanded similar tasks that your project has outlined like enhancing user authentication, integrating analytics solutions(seamless payment processing). This equipped me to troubleshoot potential difficulties I could encounter in your project early on. One major advantage of working with me is my dedication to delivering clean, maintainable, and scalable code that goes hand-in-hand with superb documentation. Be assured, every milestone will be committed to your Git repo via pull requests for detailed evaluation. Additionally, I’ve got a deep understanding of user data analytics and I know what’s meaningful and what qualifies as mere vanity numbers. I will deliver an analytics solution that will effectively track user behavior throughout their journey on your platform.
€18 EUR in 40 days
6.5
6.5

Hello! I'm a full-stack developer with experience building authentication, PCI-compliant payments, and analytics into production platforms. I'll handle all three workstreams with clean code and milestone PRs. Here's how I can help: - Expand your auth flow: email + password, optional social logins, and 2FA where it genuinely strengthens security without overengineering - Integrate PCI-compliant payments with Stripe (or a comparable gateway), including error reporting and webhooks for status updates - Wire up analytics (GA4, Mixpanel, or a recommended option) to track the full journey from sign-up to checkout, with clear dashboards My typical stack: Node.js or PHP backend with Stripe SDK, plus GA4 or Mixpanel for events. I'll commit to your Git repo via pull requests so you can review each milestone. Proposed milestones: 1. Auth flow live and tested 2. Payment end-to-end in sandbox, then production 3. Analytics events firing accurately and visible in the dashboard Share your current stack, repo access, and any existing auth/payment code, and I'll confirm a realistic timeline before starting. Let's ship this cleanly.
€27 EUR in 40 days
6.1
6.1

I can help you upgrade your platform's core functionality by focusing on secure user authentication, reliable payment processing, and actionable data analytics. For user authentication, I will implement a robust email and password flow, with the option to integrate social logins or two-factor security to strengthen the stack without over-engineering. For payments, I will set up secure, PCI-compliant processing utilizing Stripe or a comparable gateway, complete with clear error reporting and webhook support for status updates that work seamlessly in both sandbox and production modes. To track user behavior from sign-up through checkout, I will wire up Google Analytics 4, Mixpanel, or another recommended analytics solution to surface actionable metrics in easy-to-read dashboards. All code will be clean, documented, and delivered through Git pull requests for milestone reviews to ensure every acceptance criterion is fully met. Would you like to discuss the best frameworks and a realistic timeline to get this shipped?
€18 EUR in 7 days
6.0
6.0

As an experienced web developer with a specialization in PHP and API integration, I'm confident I can excel at enhancing your platform's authentication system, optimizing its payment processing, and integrating data analytics. My extensive experience with WordPress, Woocommerce, Shopify, Codeignitor & Laravel, as well as my proficiency in working with various APIs such as Stripe amongst others aligns perfectly with your project requirements. Additionally, SCEA certified in Java web technologies, I have a comprehensive understanding of what it takes to deliver secure digital solutions. Whether it's expanding the login flow by incorporating social logins or employing two-factor security measures while maintaining usability, reliability and security are never compromised in my projects. Data analytics plays a significant role in making better business decisions and I appreciate your focus on actionable metrics. My familiarity with Google Analytics 4 and Mixpanel is solid; I understand not just how to track user behaviour but the importance of surfacing this information in digestible yet insightful ways. You'll find not just clean and well-documented code in my Github commits but a flawlessly integrated, issue-free project that meets acceptance criteria to the tee. Let's collaborate to deliver cutting-edge functionalities while maintaining uncompromised security.
€18 EUR in 40 days
6.3
6.3

I can help strengthen your authentication by adding email/password plus optional social logins like Google or Facebook for smoother access. We can also include two-factor auth using SMS or an authenticator app without making it complicated. For payments, I’ll set up Stripe to process transactions directly in your app, ensuring PCI compliance, clear error messages, and webhook support to update payment status instantly. I recently helped a startup fix webhook handling to prevent missed payment updates, and those practices will apply here. On analytics, I recommend Google Analytics 4 paired with Mixpanel for detailed user behavior tracking from sign-up to checkout. Together, they’ll deliver the actionable insights you want via dashboards tailored to your needs. A quick question: do you have social login providers in mind, or should I suggest based on your user base? Also, do you prefer a self-hosted dashboard option or cloud tools for data visualization? I’ll use well-documented SDKs for auth and Stripe, commit clean code to your repo, and keep milestones clear for easy review. Expect a timeline of 3-4 weeks to complete all three areas with thorough testing. Ready to start once you confirm your preferred social logins and analytics tools.
€18 EUR in 7 days
6.0
6.0

Hello! I see you're looking to enhance the core functionality of your platform, focusing on authentication and payment processing. It's clear you're aiming to create a seamless user experience and strengthen your platform's reliability. To align with your goals, could you clarify what specific enhancements you're envisioning for the auth flow? Additionally, are there particular metrics you're looking to track through Google Analytics? I believe a phased approach could help mitigate risks—starting with a thorough review of your current setup, followed by implementing the enhancements in manageable sprints. I've worked on various projects like a regional tutoring portal, an internal CRM for a property agency, and a React Native field-reporting app. Looking forward to collaborating on this!
€25 EUR in 10 days
6.6
6.6

Provincia di Bergamo, Italy
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₹12500-37500 INR
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€6-12 EUR / hour
$250-750 USD
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€3000-5000 EUR
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₹12500-37500 INR
$250-750 USD
₹12500-37500 INR
$750-1500 USD
$250-750 USD
min ₹2500 INR / hour
₹12500-37500 INR
$250-750 USD