Suljettu

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

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 It runs on AWS EC2's, ubuntu 12.04 + PHP 5.3.10 + Zend 2.3.0 + MySQL 5.5.32 (now out of date).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

Taidot: MySQL, Linux, PHP

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Tietoa työnantajasta:
( 12 arvostelua ) London, United Kingdom

Projektin tunnus: #25748952

29 freelanceria on tarjonnut keskimäärin 1082$ tähän työhön

nddungha

Hello, Could you send me the application so that I can take a quick look? Then, we can discuss further the possible tasks to optimize the loading speed. My English is fluent, so feel free to contact me in the chat. Lisää

$1250 USD 10 päivässä
(297 arvostelua)
7.9
contriverz

<< I am fulfilling all your requirements so can we have a quick discussion through chat? >> Hi there, After reading your offer, this looks like a perfect fit for my skill sets so May I discuss with you for further d Lisää

$1000 USD 5 päivässä
(112 arvostelua)
7.7
shaktistanwar

Hi I am a technical evangelist, developer and can do this task for you. I have more than 15 years of experience in software development and am a Microsoft certified professional. I have strong work experience in Dynami Lisää

$1125 USD 7 päivässä
(41 arvostelua)
7.2
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 Lisää

$1050 USD 24 päivässä
(47 arvostelua)
7.1
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 6 päivässä
(47 arvostelua)
7.6
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 Lisää

$750 USD 1 päivässä
(302 arvostelua)
6.8
hawkscodeau

Hello, I have 8+ years in web design & development with good experience in following skills ... HTML, HTML5 CSS, CSS3 & LESS CMS - Wordpress, WooCommerce, OpenCart, PrestaShop PHP, C#, YII, ASP.net, Codeigniter, Cak Lisää

$1000 USD 10 päivässä
(13 arvostelua)
6.5
crystalhitesh

Dear Client, It's great to speak with you about your new project..!! With more than 7 years of experience in all framework of PHP(Laravel/Yii/Codeignitor/Zend) Here, I mentioned last performed work by me, please rev Lisää

$800 USD 7 päivässä
(119 arvostelua)
6.4
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 Lisää

$1125 USD 10 päivässä
(19 arvostelua)
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 Lisää

$1500 USD 25 päivässä
(24 arvostelua)
5.5
sapnathakur14

Hello, Warm Greetings!!     I read your job description completely and I found my skills relevant to your project. I am a professional web developer with 4+ years of programming experience for a multitude of different Lisää

$1000 USD 14 päivässä
(7 arvostelua)
5.3
cuczoran

Hi, as a well-experienced PHP expert, I can do this perfectly as well as you want. I had ever worked on so many web projects using php frameworks like Laravel, CodeIgniter or Core PHP. I have full experiences with html Lisää

$1125 USD 7 päivässä
(6 arvostelua)
5.2
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 Lisää

$1200 USD 7 päivässä
(9 arvostelua)
5.2
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 Lisää

$750 USD 7 päivässä
(11 arvostelua)
4.1
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 Lisää

$1200 USD 5 päivässä
(7 arvostelua)
4.2
mquesada90

Hello, Thank you for your posting. I am Marvin and I have a lot of experiences in server configuration and optimization. As a certified software engineer, I am willing to work with you in this and further projects. Ple Lisää

$1400 USD 7 päivässä
(9 arvostelua)
4.8
realcredits1118

Hi, dear client. I'd really like to work with you on this one if possible! I have carefully read your project post PHP, MySQL: debugging, stability, performance enhancement and upgrade, and want to make you an offer an Lisää

$1000 USD 7 päivässä
(3 arvostelua)
3.9
shynar88

~Dear client~ I can complete ❤️ your web project ❤️ perfectly. ~~~~ I have just read your requirements carefully and I am sure I can give you the greatest result. For this, I think we can discuss more through via cha Lisää

$1125 USD 7 päivässä
(3 arvostelua)
3.8
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 Lisää

$900 USD 3 päivässä
(11 arvostelua)
4.8
leadingmetier

Hello, I have 8+ years in web design & development with good experience in following skills ... HTML, HTML5 CSS, CSS3 & LESS CMS - Wordpress, WooCommerce, OpenCart, PrestaShop PHP, C#, YII, ASP.net, Codeigniter, Cak Lisää

$1000 USD 10 päivässä
(4 arvostelua)
3.3