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Job Post: Full-Stack Developer Needed for Persistent Bug Fix (Replit) Project Summary: I need an expert full-stack developer to perform a one-time, comprehensive fix for a persistent and recurring bug in my StorePro POS application, which is hosted on Replit. I require a final, stable solution that will not introduce any new regressions. The Problem: My application has been experiencing the same set of critical bugs that have not been resolved by previous attempts. The issues are full-stack in nature, affecting both the front-end user experience and the back-end database operations. Front-End Issues: The "Sales" page catalogue shows "All Products (0)" and "No products found," despite the product database being populated. The "Transactions" page displays a blank screen with a TypeError: [login to view URL] is not a function. The authentication page is being bypassed, leading to incorrect user states. Back-End Issues: A persistent SQL syntax error in the updateProduct function prevents transactions from being completed. The API response structure for products is being sent as an object {success: true, products: [...]} instead of a direct array, causing front-end data parsing failures. Required Skills: Proven expertise as a Full-Stack Software Engineer. In-depth knowledge of React and Node.js. Strong debugging skills with PostgreSQL and database queries (specifically fixing SQL syntax errors). Experience with Replit and its environment is essential. Ability to perform a comprehensive root-cause analysis and provide a permanent fix. To Apply: Please provide a brief summary of your relevant experience and explain your proposed approach to resolving these issues once and for all. I am looking for a reliable, expert solution.
Project ID: 39745973
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53 freelancers are bidding on average $166 USD for this job

Hello dennisn75, I'm writing with great interest regarding your project, "Full-Stack Developer for StorePro POS Repair." I've carefully reviewed your need for an expert to resolve the persistent, critical full-stack bugs in your Replit-hosted StorePro POS, including the front-end display and transaction issues, and the core back-end SQL syntax errors. My expertise as a Full-Stack Software Engineer, with strong skills in React, Node.js, and in-depth PostgreSQL debugging, aligns perfectly with your requirements. I also have proven experience with Replit environments and performing comprehensive root-cause analysis to deliver permanent solutions. My approach will involve a systematic diagnosis, starting from the back-end to rectify the SQL syntax and API response structure, then ensuring the front-end correctly processes data, and finally securing the authentication flow, guaranteeing a stable, regression-free fix. I am confident I can deliver the reliable, expert solution you need. Let's connect to discuss this further. Sincerely, Navneet
$250 USD in 7 days
7.7
7.7

Hello, Thank you so much for posting this opportunity. It sounds like a great fit, and I’d love to be part of it! I’ve worked on similar projects before, and I’m confident I can bring real value to your project. I’m passionate about what I do and always aim to deliver work that’s not only high-quality but also makes things easier and smoother for my clients. Feel free to take a quick look at my profile to see some of the work I’ve done in the past. If it feels like a good match, I’d be happy to chat further about your project and how I can help bring it to life. I’m available to get started right away and will give this project my full attention from day one. Let’s connect and see how we can make this a success together! Looking forward to hearing from you soon. With Regards! Abhishek Saini
$250 USD in 7 days
6.6
6.6

Hello @dennisn75 , I can help you fix the full-stack issues in your StorePro POS app on Replit. I’ve worked with React, Node.js, and PostgreSQL for several years and have solved similar problems involving broken APIs, frontend data issues, and SQL errors. From what you described, the bugs seem to come from mismatched API responses and database query errors, which are affecting both the frontend display and backend logic. I’ll go through each part of the app, find the root cause, and fix the problems without creating new issues. To make things easier, I can also do a quick cleanup of the code where needed and provide a summary of what was fixed. Let me know if you'd like to move forward and I can get started soon. Warm regards, Zain
$200 USD in 2 days
6.3
6.3

I wholeheartedly believe I am the right fit for your project based on my extensive experience and expertise in Full-Stack Software Engineering, particularly in JavaScript, MySQL, and PHP -- which are all important requirements for this project. My proficiency stretches beyond fixing bugs; I also specialize in optimizing performance and enhancing front-end user experience while ensuring the back-end database operations run smoothly. I have a proven track record of resolving complex and persistent issues like the ones you've described. Before I implement any fixes, I conduct scrupulous root cause analysis to ensure we don't patch problems but truly mend them. In order to accomplish that for your StorePro POS application, my strategy would be to first dissect each bug individually, applying necessary debugging techniques and implementing appropriate measures to eliminate not just these bugs but also reduce the possibility of similar issues cropping up in the future. In addition to my skills, I am well-versed with Replit - a crucial component of your project hosting. I believe this in-depth familiarity will aid in successfully deploying a final stable solution that doesn’t introduce any regression. As a bonus marker of competence, let me assure you that all my previous clients enjoy seamless operations post-deployment, thanks to my one-year free support—all of which you will have access to if you entrust me with your StorePro POS application.
$140 USD in 7 days
5.4
5.4

Hello, With 10+ years of experience as a Full-Stack Engineer (React, Node.js, PostgreSQL), I can deliver a permanent fix for your StorePro POS on Replit. I’ve resolved similar cross-layer issues where API inconsistencies, SQL errors, and front-end parsing mismatches caused recurring bugs. My focus will be on root-cause analysis, not just patching symptoms—so your app runs stably without regressions. My approach: Front-End: Debug React components to fix the “All Products (0)” and transaction TypeError issues by aligning data structures with expected array formats. Enforce correct state handling to restore authentication flow. Back-End: Correct the SQL syntax in updateProduct, optimize queries, and normalize API responses (returning product arrays in the expected schema). Integration: Align front-end parsing logic with API output, ensuring catalogue and transaction pages display correctly. Testing: Replicate your environment in Replit, run full regression tests across Sales, Transactions, and Auth flows. Confirm stable behavior with populated DB. Delivery: Clean, documented fixes with clear notes on root causes and changes made. I guarantee a stable, production-ready solution with zero bypasses or recurring bugs. Let’s connect and finalize a reliable fix for your POS. Regards, Karthik
$240 USD in 7 days
4.8
4.8

Hello dennisn75, I’ve reviewed your project description and believe I’m an excellent fit for this role. I recently completed a similar project just a month ago. My background covers PHP, JavaScript, MySQL, Debugging, Node.js, PostgreSQL, Full Stack Development, API Development. Let's connect in chat so that we discuss this further. Thank You
$130 USD in 7 days
4.0
4.0

Hello, I understand that you are seeking an expert full-stack developer to address persistent bugs in your StorePro POS application hosted on Replit. As a seasoned Full Stack Developer with proficiency in JavaScript, MySQL, Node.js, and PHP, I am well-equipped to tackle the front-end and back-end challenges you have outlined. My approach involves conducting a thorough root-cause analysis to identify the underlying issues causing the bugs. Leveraging my extensive experience in React and Node.js, I will implement robust solutions to ensure a stable and error-free application. Moreover, my expertise in debugging SQL syntax errors and optimizing database queries will be instrumental in resolving the back-end issues. I am eager to collaborate with you on this project and ensure effective communication throughout the process. Please feel free to reach out with any technical questions or concerns. Looking forward to delivering a reliable and expert solution for your StorePro POS application. Best regards, Umar
$150 USD in 7 days
3.5
3.5

Hi, I’m an experienced React.js developer with a strong background in building responsive, high-performance web applications. I’ve worked on projects involving [Redux, Firebase, REST APIs, TailwindCSS, Node.js backend, etc.] and can ensure clean, maintainable code.
$140 USD in 7 days
3.7
3.7

Hello Dennis, I understand the critical nature of the bugs affecting your StorePro POS application. With my expertise in full-stack development, particularly in React and Node.js, I've successfully tackled similar issues, ensuring both frontend and backend stability. For instance, I've resolved complex bugs in previous projects, enhancing user experience and backend functionality. My approach to your situation would involve conducting a thorough root-cause analysis, followed by implementing necessary fixes without introducing new regressions. I'll ensure that the product catalog displays accurately, correct the TypeError on the Transactions page, and resolve the SQL syntax error in the updateProduct function, along with fixing the API response structure. Could you share any existing documentation of the application that might help in diagnosing these issues quickly? Thanks, Bryson
$150 USD in 5 days
4.6
4.6

Hi dennisn75, Excited to assist with resolving the persistent bugs in your StorePro POS application hosted on Replit. Could you share more details about the previous attempts made to fix these issues? Here’s what I’ll deliver: - Conduct a thorough analysis of the front-end issues affecting the user experience on the Sales and Transactions pages. - Debug the back-end SQL syntax error in the updateProduct function to ensure smooth transaction processes. - Rectify the API response structure to prevent data parsing failures on the front end. - Provide a stable solution that guarantees no new regressions post-fix. After my work, you can expect a fully functional StorePro POS application with seamless front-end and back-end operations, free from the recurring bugs. I am Umer Farooq, an Experienced Website Designer/Developer with over 7 years of Experience in React, Node.js, PostgreSQL, and Replit. I am confident in my ability to deliver quality work and 100% satisfaction. Let me know if you’re open to a quick chat. I’d be glad to walk you through how I’d approach this. Looking for a kind response. Thanks, Umer Farooq For More About Me & My Portfolio Visit: https://www.freelancer.com/u/umerfar48
$250 USD in 15 days
3.2
3.2

Hello Dennis, I can provide a reliable solution for the persistent bugs in your StorePro POS application hosted on Replit. With over 6 years of experience as a full-stack developer, I specialize in resolving complex issues across both front-end and back-end operations. I have extensive expertise in React and Node.js, along with strong debugging skills in PostgreSQL. I understand the critical nature of the issues you're facing, especially the SQL syntax errors and API response structure that are causing disruptions. My approach will involve a comprehensive root-cause analysis, addressing both the front-end and back-end problems to deliver a stable, long-lasting fix. I am confident that my skills make me the best fit for your project. Thanks, Billy Bryan
$250 USD in 2 days
3.3
3.3

⚠️!!NB!! ⚠️ YOU NAME THE PRICE — I’LL DOUBLE THE IMPACT Dennis, I'm Casper, your Full-Stack Software Engineer savior. ?♂️ A few reviews? That’s your edge. While others coast, I'm hungrier. I execute fast, sharp, and with something to prove. Your StorePro POS issues won't stand a chance. React, Node.js, PostgreSQL — handled. I'll diagnose, debug, and deliver a rock-solid fix, ensuring a seamless, bug-free experience for your users. ? Let's talk about your project further! Regards, Casper
$150 USD in 7 days
3.2
3.2

Hi, We are eager to seize this opportunity and will work diligently until you are 100% satisfied with our results. We did the same work 3 months ago. We are an expert team which have many years of experience on PHP, JavaScript, MySQL, Debugging, Node.js, PostgreSQL, Full Stack Development, API Development Let's connect via chat to discuss this further. Thank You
$130 USD in 7 days
2.0
2.0

Hello dennisn75, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on PHP, JavaScript, MySQL, Debugging, Node.js, PostgreSQL, Full Stack Development, API Development Lets connect in chat so that We discuss further. Thank You
$140 USD in 7 days
1.2
1.2

Hi, As an experienced developer, I’ve encountered and resolved numerous full-stack issues similar to the ones you’re currently experiencing in your StorePro POS application. My proficiency in React and Node.js combined with my strong debugging skills in PostgreSQL make me the perfect candidate for this task. With extensive experience working in Replit's environment, I am well-equipped to identify and resolve issues unique to its platform. At TechArt Solutions, we're dedicated to finding not just an immediate solution but a permanent fix. I propose performing a comprehensive root-cause analysis of the bugs you described. This will enable me to address potential regressions and ensure that all fronts of your application, including the front-end user experience and back-end database operations, are stable and efficient once again.
$170 USD in 10 days
0.9
0.9

Hi, I can provide a comprehensive fix for your StorePro POS bugs on Replit, ensuring stability without regressions. I have experience with React, Node.js, PostgreSQL, and debugging full-stack apps in Replit environments. My approach will be to: Debug and correct the front-end state issues (products not showing, transaction errors, auth bypass). Fix the SQL syntax error in updateProduct and validate all database queries. Standardize API response structures so the front-end parses data correctly. Test end-to-end to ensure sales, transactions, and authentication work seamlessly. You’ll receive a final, stable solution with documented fixes. Best, Shakila Naz
$100 USD in 7 days
0.0
0.0

Hi my next Client, You don't have to pay if you are not happy with your requirements, I am the Developer you want to work with! Let's get you going. I understand the critical front-end and back-end issues in your StorePro POS app on Replit. My 15 yrs of experience brings proven expertise in React, Node.js, PostgreSQL, and thorough debugging skills. While new to Freelancer, I ensure a stable and seamless fix with comprehensive root-cause analysis. I would love to chat more about your project! Remember you don't have to pay anything if you are not happy with what I can provide you. Regards, Daniel van Vuuren
$150 USD in 5 days
0.0
0.0

?YOU PAY WHEN YOU ARE HAPPY WITH THE WORK ? I am a person for your project, I will work with you until you are 100% satisfied. I understand the critical nature of the bugs in your StorePro POS application on Replit. Solving the front-end issues like catalogue and transaction displays requires a keen eye for detail. Fixing back-end SQL errors demands expertise in PostgreSQL. While new to freelancer, I am adept at handling similar complexities off-site. I would love to chat more about your project! The worst that can happen is you walk away with a free consultation. Regards, Brandon Booth
$150 USD in 14 days
0.0
0.0

I am a perfect fit for your project, Dennisn. With extensive experience in full-stack development, React, Node.js, and PostgreSQL, I offer the expertise needed to tackle the persistent bugs in your StorePro POS application hosted on Replit. While I am new to freelancer, I have tons of experience and have completed many successful projects off-site. I have a strong track record of resolving complex issues like the front-end catalogue display discrepancies and the back-end SQL syntax errors you are facing. Let's work together to create a stable, seamless, and bug-free solution that ensures a clean and professional user experience for your customers. I would love to chat more about your project! Regards, Lucca Wiehart
$150 USD in 14 days
0.0
0.0

I thrive on challenges like yours and can deliver a clean, professional, user-friendly solution that scales as you grow. I see you need a full-stack developer to fix critical bugs in your StorePro POS application on Replit. I once resolved a similar issue and boosted application stability by 40%. Although new here, I’ve spent 4+ years working with React, Node.js, PostgreSQL, and Replit on similar projects. Could we hop on a 10-minute call to align on your priorities? Regards, Christopher Venter
$150 USD in 30 days
0.0
0.0

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