Refinement of the custom legacy CRM (PHP + MySQL)

Hello! I have over 20 years of experience as a web developer (PHP/ASP/C#/MySQL/MSSQL). In my last job, I spent more than 5 years developing a corporate CRM, initially as a monolith on PHP/MySQL and then as microservices on vue.js+node.js/postgresql. The CRM had many integrations with third-party services via API. Rate - $12/hour. I would be happy to collaborate.

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Good day!
Experience is available.
Rate - $15 per hour.
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Good day. I started with PHP 5 and before the appearance of frameworks at all, so I have significant experience working with pure PHP (and pure JavaScript as well). I also developed some components for teaser networks in pure PHP (where maximum performance is required). The rate is $15/hour, $120/day. I indicated the price in the proposal for a day, if you will pay in hryvnias and the commission is on you. There are payment options in cryptocurrency or Payoneer.

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Hello. I can do your project. I have experience. Write to me and we will agree. Rate 200 UAH/hour.

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Good. Experience in programming in PHP for more than 20 years. Rate - $15 per hour.

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Hello. I work with PHP/JavaScript. I am ready to collaborate. Please contact me.

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Hello.

1 - $18 per hour.
2 - Yes, a lot of custom systems.

I have over 10 years of fullstack experience working on various projects since the times when there was no MVC, etc.
I work carefully - refactoring to avoid breaking old functions.
You mentioned that the project is for 1-2 weeks - it's hard to estimate the completion time without access to the code, but I will do my best to meet these deadlines.
Always available, ready for long-term support of the project if needed.
…
Feel free to reach out, I would be happy to collaborate.

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Good day.
I am ready to take on the project. I have experience working with procedural legacy PHP without frameworks (php7, mysqli, mixed PHP/HTML/JS code). I have worked on refining existing CRM systems without stopping production.

Rate: $15/hour
Experience with legacy PHP: yes, regularly

I work carefully and attentively, understanding the importance of the stability of the working system.
I am ready to discuss the details.

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Show the project code
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Let me see the code

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Good day, I have extensive experience in completing old handwritten projects, so I am ready to work on your website quickly and efficiently. Write to me, we will discuss the details.
1. 15 dollars per hour;
2. Constantly;
3. Possibly in private.

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Hello! I will complete your task quickly and efficiently.

1. $20
2. Yes, I was
3. I will provide the website in private

My portfolio: https://freelancehunt.com/ua/freelancer/romas6ka.html#portfolio
Write to me, I will start working today. I will be happy to collaborate with you!

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Hello!

I am a Full-Stack Software Engineer with over 7 years of experience in developing websites, SaaS solutions, complex web platforms, and MVPs for startups - from idea and architecture to production and support.

I work not only as a developer but also with a focus on business logic, scalability, and long-term support of solutions. My portfolio includes examples of implemented projects of varying complexity.

Technology stack:
PHP (Laravel, Symfony, Yii2),
Frontend: JavaScript (Vue.js, React.js), HTML5, CSS3,
… Databases: MySQL, PostgreSQL.

Regarding timelines and costs - at this stage, it is difficult to accurately assess them without clarifying the requirements. To form a reasonable estimate, it is usually necessary to understand:
- the goals of the project;
- key functionality;
- expected load and integrations;
- priorities (quick launch vs scaling).

I suggest starting with a brief clarification of requirements or a call/email - after that, I will be able to provide a realistic estimate on timelines, budget, and implementation options.

I would be happy to discuss the details.

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Good day, Konstantin. I have extensive experience in CRM development and working with legacy projects. I have experience in gradual integration of the framework into the project. The rate is approximately $20/hour (need to look at the code). I can provide a project example in a private message.

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Hello. I have extensive experience in development with php+mysql. I am good at understanding other people's code. Feel free to contact me. I will figure it out and improve it.

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Hello,

I have over 9 years of full stack development experience, including extensive work with procedural PHP systems without frameworks. I have maintained and extended legacy monoliths built on PHP 5 and 7 with mysqli queries scattered across mixed PHP, HTML, and JavaScript files, so I am very comfortable working in this type of environment without rewriting the entire system.

I have strong SQL skills and hands on experience optimizing complex queries, adding filters, restructuring reports, and improving performance in production systems. I have also redesigned business logic modules such as pricing and discount engines, implementing fixed, percentage, and conditional rules based on client type, amount, date, and service categories while ensuring backward compatibility.

In previous projects, I worked on an internal CRM for a financial services company where I extended client profiles, added logging and history tracking, improved reporting modules, and refactored calculation logic without disrupting daily operations. The system was also a procedural PHP monolith, and stability was critical.

My hourly rate is 35 USD. I am detail oriented, careful with production systems, and focused on making targeted, safe improvements rather than unnecessary rewrites. I am available to start immediately and can commit for the full 1 to 2 week period, with interest in continued collaboration.
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Looking forward to your response.