PHP, MySQL: debugging, stability, performance enhancement and upgrade

종료 등록 시간: 3년 전 착불
종료 착불

BACKGROUND

We have a three-tier application that was launched in 2013 but shelved in 2016. It runs on AWS EC2's, ubuntu 12.04 + PHP 5.3.10 + Zend 2.3.0 + MySQL 5.5.32 (now out of date).

We have looked at restarting it and refreshing it but have found some issues (the original development team has since dispersed).

REQUIREMENT / DELIVERABLES

We are looking for a reliable team or person that can:

1) Review the existing code and determine the reasons for why it now runs so slowly (this should NOT require code change, it must logically be a configuration issue). Must be able to get the average response time to under 1.5secs (as it was previously).

2) Review the existing code-base and look at how best to upgrade it (ie. PHP, MySQL), then complete an upgrade (longer term goal)

This requires an analytical team with a solid understanding of older PHP/MySQL/server configuration. Sloppy lazy coding/fixes, or people who take shortcuts are not welcome.

Each delivery will need to be fully documented with a list of before and after changes.

Step 1 should be relatively quick for an experienced system admin/developer.

Step 2 can be spread over a longer period and may require further discussion.

Completion of all steps to a high standard with a high degree of professionalism will result in a longer term contract for ongoing maintenance, enhancement and upgrade.

PAYMENT

Targets and fixed payments will be agreed on a time and materials basis for each phase, and will not be paid unless targets can be validated. Failure to deliver to target or by deadline will result in the contract being terminated with no payment.

Partial delivery of a step by definition is not a working delivery. There will be no payment for partial delivery under any circumstances.

MINIMUM SKILLSET

Preference will be given to those with experience in professional working environments (eg. large multi-national companies, banks, tier-1 technology companies etc).

1) Do not apply if you do not have experience in the above, or if you are an amateur.

2) Do not apply if you have a project completion rate below 95%

3) Do not apply if you have a rating below 4.5

4) Do not apply if you are unreliable

MySQL 리눅스 PHP

프로젝트 ID: #25748952

프로젝트 소개

22 건(제안서) 재택 근무형 프로젝트 서비스 이용 중: 3년 전

이 일자리에 대한 프리랜서 22 명의 평균 입찰가: $1058

mmadi

Hello David W., I have read the job description and I am interested in this job. I have 10 years experience in developing products using Linux, MySQL, PHP. I have read your requirements and am ready to start working 기타

$1050 USD (24일 이내)
(50 리뷰)
7.1
bindmission

Hello Hope you are doing well. I have 7 years of experience in Linux and system administration. I am an expert on PHP/MySQL and server management. Me and my team can provide on going support. We can discuss more o 기타

$750 USD (1일 이내)
(449 리뷰)
7.2
dkarataev

Hey! I am skilled PHP (Laravel/CodeIgnite/Symphony) coder with skills including MySQL, PHP and Linux. Please contact me to discuss more about this project. Thanks

$1250 USD (6일 이내)
(47 리뷰)
7.6
benliao

Hello, sir. How are you? I have just read your project description and I can help you as my rich experiences. I have rich experiences in php and mysql I will give you the perfect result you are satisfied with. My clie 기타

$1125 USD (10일 이내)
(21 리뷰)
5.6
manojsainig

Hi, I specialize in delivering quality services with respect to strict deadlines.I have 7 years of huge experience with Advanced PHP development experience and familiarity with framework(Laravel, Symfony and Codeignite 기타

$1500 USD (25일 이내)
(24 리뷰)
5.6
aribafreelance20

Hi Dear as i read your details I understood you have a project which is running in product environment. My team can review your code to find out why it is slow , in these cases most of the time the problem is the d 기타

$1200 USD (5일 이내)
(15 리뷰)
5.5
mikalai94

Hello. I've clearly read your requirements and it's very interesting. Your requirements are very professional and bidder's limit is very strict. The irony is that i am new freelancer, but i am matched your condition. I 기타

$750 USD (10일 이내)
(13 리뷰)
5.2
nizamfarhas

Hello Your requirements: "PHP, MySQL: debugging, stability, performance enhancement and upgrade" I'm a senior PHP developer with 9 years of experience and I'm very familiar with API integration. As you will see in my 기타

$900 USD (3일 이내)
(20 리뷰)
5.5
vitalysamsonovd

Hello, How are you? I just reviewed your project description and very interested in your job now. I hope to discuss more via chat. Thanks.

$1125 USD (7일 이내)
(7 리뷰)
4.9
Swatintf

Hello I have experienced PHP Laravel/Codeigniter developer and I am ready to work for your PHP Backend developer to make backend resources for your mobile apps. Let me know if you are interested in my profile. Waitin 기타

$1200 USD (7일 이내)
(11 리뷰)
5.3
body767

Hello, I have 14 years experience building dynamic and responsive websites using HTML, PHP, MySQL, CSS3, jQuery, and AJAX. My areas of expertise are in building web apps using PHP, MySQL,Wordpress, Laravel 5-6 and Boot 기타

$750 USD (7일 이내)
(18 리뷰)
4.5
murugesan24

Hi, I have gone through your requirement and looks challenging. I am very confident that I will be able to meet your expectation. Having over 25 years of experience in software development, I have worked on various mul 기타

$1125 USD (7일 이내)
(7 리뷰)
4.4
sakivgupta2

Hello I have checked the job description I have some queries about your Project Let me know when you are available to discuss further Thanks Vikas

$1125 USD (7일 이내)
(1 리뷰)
3.4
vijaykumaristpl

I am an expert in database design, and web-application development. I have over 25 years experience developing and delivering technology solutions for some of the largest business organisations in the world. I have han 기타

$1250 USD (7일 이내)
(0 리뷰)
0.0