Legacy PHP/MySQL CRM: Feature Updates & Bug Fixes

@n2rtechnologies

Hello, I understand you're seeking a PHP Developer to enhance your internal custom-built CRM with feature updates and bug fixes. My extensive experience in refining and optimizing CRM systems positions me well to tackle your project's specific needs. I can deliver a thorough analysis of the existing system, implement necessary updates, and ensure that all bugs are fixed efficiently. With a focus on improving user experience and enhancing functionality, I will work closely with you to prioritize features that align with your business goals. My commitment to quality and timely delivery will ensure that your CRM not only meets but exceeds your expectations. I look forward to the opportunity to discuss how I can contribute to the success of your project. Regards, Nurul Hasan

@nikhilgarg96

Having vast experience with legacy systems and expertise in procedural PHP, I am confident in my ability to tackle your project. My approach to unearthing and comprehending unfamiliar codebases is thorough and attentive, ensuring I can make the necessary updates and fixes without impeding the existing functionality. I've honed my skills over years working with PHP, and specifically on monolithic systems. For instance, just recently I had the opportunity to refactor a custom-built CRM for a major insurance company likewise operating in the U.S., improving functionality and debugging numerous long-standing issues. The project was not only on par with what you require but also required me to efficiently optimize the codebase; an area I thrived in. Thanks....

@ambientinfotech

Hello We understand you need new CRM features added to your existing PHP/MySQL system, including advanced customer search, smart filters, and bulk messaging, while keeping the current structure stable. We can extend your legacy codebase with clean, well-integrated functionality, ensuring smooth performance, secure data handling, and a user-friendly interface for daily operations. Best regards, Ambient Infotech

@giaphung2k1

Hello Expert PHP/MySQL developer for your legacy CRM. I'll efficiently handle bug fixes and feature updates, ensuring stability, security, and optimal performance. My focus is delivering reliable, precise solutions that enhance your system's longevity and value. Let's discuss your project's specific requirements. Giáp Văn Hưng

@csajit

PHP Programmer with 12+ years of experience. I'm ready to take up this job and get it done. Please PM me to discuss further. If you can share detailed requirement, that would be really great. Hourly Rate: $30/hr Exp: 12+ years.

@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, JavaScript, MySQL, HTML, Web Development, jQuery 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

@abhisaini0188

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

@anshumanvermaUK

Hi I have strong experience maintaining and extending procedural PHP legacy monoliths (PHP 7 + MySQLi) with mixed HTML/PHP/JS and no framework structure. I’ve worked on live CRM systems where I added new modules, optimized slow SQL reports, and refactored complex business logic (including pricing/discount rules) without breaking production workflows. In one similar project, I improved reporting performance by rewriting heavy joins and modularizing core calculation logic while keeping the original architecture intact. Hourly Rate: $11/hour Thanks Anshuman

@rambagdi

Hello, I hope you're doing well. I'm a senior full-stack web developer with 12+ years of experience building robust, scalable, and user-friendly websites and web applications. I specialize in: Backend: PHP (Laravel, CodeIgniter, CakePHP), Python, Node.js Frontend: HTML, CSS, JavaScript, React.js, Vue.js, Angular, jQuery CMS & eCommerce: WordPress, WIX, Magento, Shopify, OpenCart, Joomla Tools: MySQL, Git, JSON, XML, Bootstrap, Bullhorn, REST APIs CRM: Bullhorn, Infusion Soft, Apollo Over the years, I've successfully delivered e-commerce platforms, job portals, social networking sites, business websites, and more. I focus on clean code, responsive design, and efficient performance. Looking forward to working with you. Best regards, Ram Bagdi

@SajidaSaqira

Hello, I am a seasoned PHP Developer with a strong background in legacy codebases and procedural PHP. I have a proven track record of successfully updating and refining CRM systems for businesses in various industries. You can find examples of my work in my portfolio: https://www.freelancer.com/u/SajidaSaqira/SS-Technologies I understand the importance of maintaining and patching legacy code without disrupting existing production functionality. I am confident in my ability to navigate and refactor undocumented code, ensuring a seamless transition with the updates and bug fixes required for the CRM system. I am particularly interested in the client profile enhancements, reporting module updates, and refactoring the discount mechanism outlined in your project description. My experience with similar projects has equipped me with the skills necessary to tackle these tasks effectively. I look forward to discussing how I can contribute to enhancing your CRM system. Let's connect to further explore how we can work together. Best regards, Sajida Saqira

@fullstack0407

Your project is exactly the kind of legacy system work I specialize in stabilizing, refining, and safely extending procedural PHP monoliths without disrupting live production environments. I have extensive experience working with PHP 5.x–7.x procedural codebases using mysqli_*, mixed PHP/HTML structures, and jQuery-heavy front ends. I’m very comfortable navigating undocumented, spaghetti-style applications and introducing structured improvements incrementally—without attempting risky full rewrites.

@AlexDeveloper911

Hello , 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, HTML, Web Development, jQuery Please come over chat and discuss your requirement in a detailed way. Regards

@AnumFatima210

Hello , I came across your project Legacy PHP/MySQL CRM: Feature Updates & Bug Fixes 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, JavaScript, MySQL, HTML, Web Development, jQuery 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

@arshman18

Greetings, I see you need help updating and refining your CRM for your insurance services business. Sounds like a crucial project, especially since it's already in production. I’d approach this by first diving into the legacy code to understand its structure and layout. I have extensive experience working with procedural PHP and optimizing SQL queries, which will be essential for enhancing client profiles and refining the reporting module without disrupting current functionalities. In a previous project, I successfully overhauled a similar CRM system, adding new features while ensuring that existing processes remained intact. I’m comfortable managing undocumented code, so I can help navigate through the spaghetti code and implement your requested updates efficiently. Could you share more about the specific filters and columns you envision for the reporting module? Best regards,

@mdjafferali

Hi I am php developer having 9+ years of experiences I will update your existing crm system as per your requirements Please start chat with me for further discussion Thnaks Jaffer I.

@markupdudes

Hi there, I’ve reviewed the requirements for your legacy PHP/MySQL CRM updates and bug fixes, and I’m confident I can help enhance and stabilize your system without disrupting its current live functionality. With extensive experience in procedural PHP and deep knowledge of navigating and refactoring complex, undocumented codebases, I specialize in preserving business-critical operations while implementing improvements. For your project, I will carefully expand the client profile page with the requested new fields and sections, update reporting modules by adding precise filters and columns with SQL optimization for better performance, and overhaul the discount mechanism to support dynamic and multiple discount types, ensuring robust bug fixes. I propose starting with a thorough code assessment in the first couple of days, followed by iterative updates and testing. This approach will keep production stable and track progress clearly. I’m available to begin immediately and aim to complete the work within 10-14 days. Could you share access details or examples of your current SQL queries and discount rules for a deeper understanding? Best regards,

@parthv78

Hello, I’m Parthkumar Virani, a PHP developer with 5+ years of experience, including deep work on legacy procedural PHP + MySQL monoliths running in production environments. I’m fully comfortable working in spaghetti-style, mixed HTML/PHP/JS codebases using mysqli, and improving functionality without risking system stability. Relevant Experience I’ve maintained and extended legacy CRMs for service and insurance-related businesses where: • Reports were built via raw SQL into HTML tables • Business rules (pricing/discounts) were embedded in procedural files • No documentation existed • Changes had to be deployed safely without full rewrites I approach such systems carefully—mapping flows first, isolating logic changes, and testing edge cases thoroughly. Scope Handling Client Profile Enhancements • Add new fields and multi-address relationships • Implement change/activity logs • Add notes/comments section • Maintain backward compatibility Reporting Updates • Add filters (Date, Status, Manager) • Add new columns • Optimize slow queries (indexes, joins, execution plan review) Discount Refactor • Support fixed, percentage & combined discounts • Add dynamic conditions • Fix logic gaps & edge cases safely Looking forward to contributing to your CRM’s stability and evolution. Best regards, Parthkumar Virani

@zhens2

Hi! With profound experience in PHP development spanning over 8 years, I am confident that I can satisfactorily address your project requirements. Working exclusively with procedural PHP legacy monoliths over these years, I've developed a deep understanding of the challenges and best practices surrounding navigating, maintaining, and patching existing codes. As highlighted in your description, being able to refactor and update your CRM without breaking it is a skill that I have honed and would be invaluable in ensuring a smooth transition as we improve and optimize your system. Considering the intricate nature of your CRM system given its direct impact on your business operations, it requires not only technical prowess but also intense attention-to-detail which I am highly particular about. My hourly rate is [insert hourly rate here]. With an estimated work duration of 1-2 weeks, if granted the opportunity, I pledge to provide quality assistance whilst diligently respecting both project terms and timeframe. As for potential long-term partnership opportunities beyond this initial hurdle, should you find satisfaction with my work, I am more than willing and able to offer continuous support. What are you waiting for? Let's put our minds together and unlock the full potential of your CRM!

@shashilal

Hello Sir, I’ve reviewed your project requirements and I’m confident I can help you build a reliable, scalable PHP-based web solution that meets your business goals. I am an MCA-qualified PHP Web Developer with 10+ years of hands-on experience, delivering custom web applications, CRM systems, e-commerce platforms, and API-driven solutions for clients across different industries. Why I’m a good fit for this project: 10+ years of professional PHP development experience Strong expertise in Core PHP, Laravel, Codeignator, Wordpress, MySQL,PostgreSQL, REST APIs Focus on clean code, security, and performance optimization Experience working with long-term clients and maintaining existing systems Test thoroughly before delivery Provide post-deployment support if required I have successfully delivered similar projects and can share work samples or a live demo upon request. Let’s discuss your project in detail so I can suggest the best technical approach and timeline. Looking forward to working with you. Best regards, Shashi N MCA | Senior PHP Web Developer