Magento expert, WordPress expert, Woocommerce expert

1000+ successfully completed projects speak for me!

Hire me


Things that I'm good at.

Bug fixing
10 latest projects successfully completed by me for my clients from United States:
  1. Bug in Magento E-Commerce Shop regarding Digital Products
    Sergey fixed on short notice a Problem in our Magento System, even when he was in touch with the system for the first time within hours. Highly recommended.
  2. Ajax JQuery
    Sergey did a very thorough job. He is precise and was on time. The add to cart adjustment on my site was done professionally and in a short turn around time. [28 July, 2018] Sergey did an excellent job adjusting add to cart functionality with the woocommerce shortcodes.
  3. Fix R+L Carriers Freight Shipping M2 Extension
    He is really fast and very knowledgeable. He understands clearly what we need and create solutions exactly fit us. We will hire him again and again. Thank you!
  4. Fix a webpage
    Sergey helped resolve a very time-sensitive code problem. Super impressive.
  5. Maintenance for a Drupal website must be Drupal Expert
  6. Troubleshoot Magento 1.9 and Paypal IPN message
    Our project sounded simple but it was actually very difficult....Another development team actually gave up. I watched Sergey bouncing around our site and server for more than 12 hours. He really put in the work and in the end he squashed that bug! I think this guy thrives on the challenge. I am paying him double even though he never asked. I think that speaks for his work.
  7. Fix Search Filter Problems with WP Listings
    He fixed our issues quickly and within budget.
  8. Custom Woocommerce / ACF integration with Woo Gallery
    Very good experience. Sergey was very easy to work with. Will definitely hire him again!
  9. Make Changes to WP Listings Search Form and Search Results Page - 30/04/2018 14:57 EDT
    Smooth and successful
  10. Module Update Brought Down My Drupal Web Site, Please Fix - 26/04/2018 18:17 EDT
    100% satisfied.

About Me

Here are some things that you should know about me.

Sergey I.Grachyov

Magento Certified Developer
My name is Sergey [Magento Certified Developer, MCDBA, MCAD(dot)NET].
I am a freelance programmer from Saint Petersburg, Russia. Time zone: GMT +3.
I am an individual, I am NOT A COMPANY in any meaning. I work alone and never distribute my work to other freelancers. I've been working as a freelancer since 2002 and I have 1000+ successfully completed projects for my clients around the world. These projects, include reviews from my past clients, are public available on the major freelance marketplaces. I am especially good when I need to fix complex bugs/errors/issues.
I can work via or via for $33/hour, 30-40 hours per week, include weekend.
My profile at as it was on January 25, 2017

My profile at (screenshot)

My profile at as it was on January 26, 2017

My profile at (screenshot)

Reviews from my past clients

Full list available in the public profile

10 latest Magento projects successfully completed by me via Freelancer(dot)com:
  1. Magento Fix Javascript JQuery Clash
  2. Check bug in Magento 2.2 website
    "Exceelnce in Magento! Highly recommended. Thank you!"
  3. Magento: Error in data validation
    "Sergey is perfect. Solved a very complex problem. I indicate for sure."
  4. Magento 2 webshop finishing touch
    "Sergey did the job what others on this site couldn't do and did that in 20 hours while he says 2 days! And the delivered work was also very good."
  5. Need a Magento and PHP Expert to Fix Broken Magento ver.
    "Excellent! Very fast and very knowledgeable in Magento."
  6. Magento 2.2.3 - Identify Payment Transaction Delay
    "Sergey is professional, knowledgable and orderly. An obscure Magento 2 misconfiguration was identified exactly according to the procedure Sergey indicated he would take -- a list of items and settings to check. The problem was resolved within a couple of hours even though it was very late at night for Sergey."
  7. I need a magento developer to fix a bug in the delivery system
    "Sergey did the job in amazing time, on the same day he applied for the job, I feel absolutely satisfied."
  8. MAGENTO EXPERT NEEDED - Urgent - Customers Experiencing "Gateway Request Error" During Checkout
    "Sergey was fantastic to work with. Because of his experience and his Magento certifications, he pinpointed my problem and fixed it right away. Thank you!"
  9. Magento 2 fix issue
    "Good job A++++"
  10. Fixing 2 technical Issues with Magento 2 Shop (Shipping calculation and Quickview)
    "Returning Client. After working first time with Sergey, I decided to not waste my time with trial and error freelancers and straight went to him. Work was again, done the same day with great communication and documentation about what exactly was done. First Freelancer I met here in years who provides you with Screenshots and old/new files of the ones he altered. This is the definition of professional!"
10 latest Woocommerce projects successfully completed by me via Freelancer(dot)com:
  1. Woocommerce Bookings fix
    "Very nice! Good communication, fast working, and a very good job! Thanks a lot!"
  2. Display Event Date / Sort by Event date functionality / WooCommerce Shop Page Addition
    "Incredible. Sergey wen't above and beyond, and produced amazing work. I was very impressed with all the work, and will look for him again for future projects."
  3. woocommerce bug fix - system not sending emails
    "Sergey did a great job! was able to fix my bug very fast and sent me all documentation regarding which files he had changed. It was an pleasure working with Sergey, and I will of course hire him for similar projects in the future."
  4. Woocommerce : threshold notification total stock
    "Quick and good job. Thank you for the professionalism. The plugin do exactly what I wanted."
  5. WooCommerce WordPress customize order page summary
    "Excellent freelancer! Understands very well instructions very well and offer great service and awesome features!"
  6. Modify Woocommerce plugin output.
    "Perfect "
  7. I need to allow multiple size selection (bulk) of a variable product in WooCommerce
    "Just Amazing. I don't like to praise much, but to say the least, this guy gave me hope where there was none. His knowledge in PHP/JQuery and javascript in general is just superb. His ability to do things outside the box is outstanding. To say the least, he had performed beyond my expectation. Thank you Sergey!"
  8. WooCommerce Product Overview and Related Products does not work - Theme too old
    "perfect, gladly again."
  9. Edit a booking woocommerce plugin
    "Perfect, he understood directly what I wanted. He did good job and fast, nothing else to say."
  10. Sort a couple of bugs in woocommerce measurement price calculator
    "Sergey sorted some woocommerce issues out that we had been struggling for day with. He's a top freelancer and really knows his stuff"
10 latest WordPress projects successfully completed by me via Freelancer(dot)com:
  1. Project for Sergey G.
    "Very fast, professional and comprehensive work. Highly recommended."
  2. Project for Sergey G.
    "great. Awesome work."
  3. Project for Sergey G.
    "Job completed on time, no fuss"
  4. Google Maps Javascript API Expert Required
    "Amazing Developer and Great Communicator. Solved an issue we had been working on for 2 days within hours! Will definitely use again"
  5. Project for Sergey G.
    "Technically perfect and very fast. What more can you ask for?"
  6. jQuery script only works after page refresh?!
    "Where 4 other freelancers failed to resolve the bug Sergey fixed it!!!"
  7. Display Distance of post from current user / viewer
    "Promissed , delivered."
  8. domain name change for wordpress site
    "Much quicker than I expected, thank you!"
  9. speed up my website
    "Sergey G. is like a magician. He delivered what was promised and even more and all that in under the time planned for the project. I do highly recommend him."
  10. Wordpress Slow To Load - TTFB over 20 seconds - Need developer - I DO NOT NEED A DESIGNER - 30/04/2018 03:50 EDT
    "My first time hiring Sergy, but it won't be the last. Quick, knowledgeable, great communications. I'd highly recommend him."


My thoughts.

Magento Full Page Cache from Potato Commerce

It is version 1.4.0 as I can see from “etc/config.xml”. In the “mysql-slow-queries.log” I can see these SQL statements: # Time: 170719 11:01:35 # User@Host: skipped18_magento[skipped18_magento] @ localhost [] # Query_time: 84.889509 Lock_time: 0.000149 Rows_sent: 1 Rows_examined: 310974362 SET timestamp=1500454895; SELECT COUNT(*) FROM `skipped_po_fpc_popularity` AS `main_table` LEFT JOIN (SELECT request_url, store_id FROM skipped_po_fpc_storage GROUP BY […] “feature”

As you can see from screenshot “Closed – This job posting has been filled and work has been completed.”. AND ??? Is it failed project? Is it successfully completed project? No way to know. And more important – no way to use the link to this project as part of my portfolio. Because “feature” […]

Short description for each second project

“I need a girl for dating and also I want to buy radio lamps.” It is not joke. Please, read 10-20 project descriptions to understand me.

All bids are visible for eveyone

New “feature”

Nowadays, all bids are visible for everyone. Include Google, Bing and other search engines. My screenshot. Please, note: I am not logged in. Just like Google bot. One more screenshot, where I search for “Hello, Greetings, Top most Freelancer to work with and have great reviews too”. I.e. first phrase from the first bid from […] error with online/offline status bug with online status

This url return “online”:false in any case: As for example: {“status”:”success”,”result”:{“online”:false,”last_login”:1494827557}} Please, use your own id to check your status. My status is “online”:false in any case (any computer, any web browser). Support ticket #ROT-837-43885 sent 10 days ago. Result: ” We’ll forward your concern to the Engineering team and we’ll contact you again […]

wordfence WordPress plugin and ‘authenticate’ filter

I am working on this project: “Social Login doesn’t work anymore” and I can find issue with the wordfence WordPress plugin. File “wp-content\plugins\wordfence\lib\wfLog.php”, line #1026, add_filter(‘authenticate’, array($this, ‘checkForBlockedCountry’), 1, 0); As you can see 0 (zero) parameters passed into ‘checkForBlockedCountry’ function. Now about ‘authenticate’ filter: Your hook callback should return either a WP_User object […]


Let's talk. Also, I am contactable via eMail: Sergey at ThisDomainName dot com

As, for example, this is screenshot with list of my current projects, as it was on December 23, 2017: