Jan

Senior Backend Engineer | Amazon SP/ADS-API Integrations | 18+ Years PHP/MySQL Sys

Verified

mark as hired

Overview

Looking for part-time work (5 hours/day)

at $18.25/hour ($2,200.00/month)

BS Computer Science

Last Active

July 2nd, 2026 (5 days ago)

Member Since

February 13th, 2011

Profile Description

With over 18 years of experience in building scalable, web-based information systems, I bring deep expertise in PHP, MySQL, and full-cycle software development (SDLC). My career began at a university, where I led the design, development, and deployment of a comprehensive suite of Management Information Systems—including Enrollment, Student Information, Facilities Reservation, OPAC, Payroll, and Gradebook—built entirely in pure PHP without frameworks, demonstrating advanced skills in custom backend architecture, database optimization, and secure application development.
As an IT instructor, I delivered a broad curriculum spanning programming fundamentals, object-oriented programming (OOP), web application development (HTML, CSS, JavaScript), systems analysis and design, and office productivity tools. This academic foundation sharpened my ability to architect, document, and implement complex, user-focused software solutions.
I later joined an outsourcing firm, contributing to high-impact international projects for enterprise clients. Key achievements include developing process and request management systems for Fujitsu Australia’s data centers, as well as building web applications for lead generation/ ---------- eting, intellectual property management, photo galleries, and job boards using PHP frameworks such as Yii and CodeIgniter, applying MVC design patterns, RESTful API integration, and agile development practices.
Continuously committed to learning and innovation, I have recently expanded into Python and D ---------- go, creating automation tools, data scrapers, and bots for platforms such as Amazon, Shopify, Etsy, and Instagram. I also have hands-on experience configuring and integrating business intelligence and workflow automation tools including Odoo (ERP/CRM), Metabase (data analytics/visualization), ClickUp (project management), Airtable, Baserow, and Make (Integromat).
I am now seeking opportunities to contribute to the design and development of large-scale enterprise information systems, where I can leverage my expertise in software architecture, database engineering, API integrations, cloud-based deployments, and process automation to drive meaningful business transformation and digital innovations.

Top Skills

E-Commerce » Amazon » Feed Analysis

Experience: 2 - 5 years

E-Commerce » Amazon » Catalog Management

Experience: 2 - 5 years

E-Commerce » Amazon » Listing Management

Experience: 2 - 5 years

Other Skills

Advertising » Amazon Ads

Experience: 2 - 5 years

Web Programming » PHP » Yii

Experience: 10+ years

Web Programming » PHP » Laravel

Experience: 2 - 5 years

Software » Python

Experience: 2 - 5 years

Web Programming » CMS » Shopify

Experience: 2 - 5 years

Web Programming » Javascript » React JS

Experience: 1 - 2 years

Office and Administration » Data analysis » Data scraping

Experience: 2 - 5 years

Software » Make.com

Experience: 1 - 2 years

Software » API Integration

Experience: 2 - 5 years

Basic Information

Age: 41

Gender: Male

Website: Sign Up with Pro Account to View

Address: Sibulan, Negros Oriental

Tests Taken: IQ
Score: 125: DISC
Dominance: 9
Influence: 7
Steadiness: 38
Compliance: 45: English
C2(Advanced/Mastery)

Government ID: Sign Up with Pro Account to View

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BENCHMARKS

Loading Time: Base Classes	0.0008
Controller Execution Time ( Jobseekers / Info )	0.0452
Total Execution Time	0.0467

GET DATA

No GET data exists

MEMORY USAGE

1,648,960 bytes

POST DATA

No POST data exists

URI STRING

jobseekers/info/44818

CLASS/METHOD

jobseekers/info

DATABASE: onlinejobs (Jobseekers:$db) QUERIES: 29 (0.0289 seconds) (Show)

0.0004	`SELECT * FROM exrates WHERE rate_name = 'USD-PHP'`
0.0021	SELECT * FROM `jobseekers` WHERE `jobseeker_id` = '44818' LIMIT 1
0.0068	SELECT * FROM `jobseeker_meta` WHERE `jobseeker_id` = '44818'
0.0014	SELECT `j`., `jj`. FROM `jobseekers` `j` INNER JOIN `jobseekers_jobdata` `jj` ON `j`.`jobseeker_id` = `jj`.`jobseeker_id` WHERE `j`.`jobseeker_id` = '44818'
0.0002	SELECT * FROM `jobseekers_trust` WHERE `jobseeker_id` IS NULL
0.0003	SELECT * FROM `jobseekers` WHERE `jobseeker_id` = '44818' AND `is_private` = 1
0.0011	`SELECT * FROM employment WHERE jobseeker_id = '44818' AND hired > -1`
0.0027	`SELECT employers.contact_name, ec.employer_id, ec.jobseekers_id, ec.is_jobseeker_reply, ec.employer_date, ec.employer_comment, ec.lastmodified FROM employers LEFT JOIN employer_comment ec on employers.employer_id = ec.employer_id WHERE ec.jobseekers_id = '44818' AND employers.deactivate = 0 ORDER BY employer_comment_id DESC`
0.0002	`SELECT * FROM skill_categories ORDER BY cat_order ASC`
0.0004	`SELECT * FROM skill_subcategories ORDER BY subcategory ASC`
0.0002	`SELECT * FROM jobseekers_jobdata WHERE jobseeker_id = 44818 LIMIT 1`
0.0013	`SELECT * FROM jobseekers_skills WHERE jobseeker_id = 44818 LIMIT 1`
0.0006	`SELECT * FROM jobseekers j, jobseekers_jobdata jj,jobseekers_skills js WHERE j.jobseeker_id = '44818' AND j.jobseeker_id = jj.jobseeker_id AND jj.jobseeker_id = js.jobseeker_id`
0.0003	`SELECT *, DATEDIFF('2026-07-07',rebill_date) duration_rebill FROM employers WHERE employer_id = ''`
0.0002	`SELECT * FROM employer_comment WHERE employer_id = ''`
0.0032	SELECT `facebook`, `manual_fb_score` FROM `jobseekers_trust` WHERE `jobseeker_id` = '44818'
0.0026	SELECT * FROM `skills_categories` WHERE `is_approved` = 1 ORDER BY `name`
0.0018	SELECT `jsct`., `jsct`.`id` as `jsct_id`, `sct`. FROM `jobseekers_skills_categories` `jsct` LEFT JOIN `skills_categories` `sct` ON `sct`.`id` = `jsct`.`skill_category_id` WHERE `sct`.`is_approved` = 1 AND `jsct`.`jobseeker_id` = '44818' ORDER BY `jsct`.`rate` DESC
0.0004	SELECT * FROM `jobseekers_trust` WHERE `jobseeker_id` = '44818'
0.0002	`SELECT user_level, rebill_date, jobseekers_seen, jobseekers_seen_override from employers WHERE employer_id = ''`
0.0003	SELECT * FROM `testimonial_videos` WHERE `placement` = 1 OR `placement` = 0 ORDER BY RAND()
0.0003	SELECT * FROM `testimonial_videos` WHERE `placement` = 2 OR `placement` = 0 ORDER BY RAND()
0.0003	`select * from teasers`
0.0002	SELECT * FROM `employers` WHERE `employer_id` IS NULL LIMIT 1
0.0002	`SELECT user_level, rebill_date, jobseekers_seen, jobseekers_seen_override from employers WHERE employer_id = ''`
0.0003	SELECT * FROM `employers` WHERE `employer_id` IS NULL LIMIT 1
0.0003	`SELECT user_level, rebill_date, jobseekers_seen, jobseekers_seen_override from employers WHERE employer_id = ''`
0.0002	`SELECT user_level, rebill_date, jobseekers_seen, jobseekers_seen_override from employers WHERE employer_id = ''`
0.0002	`SELECT * FROM notes WHERE employer_id = '0'`

HTTP HEADERS (Show)

SESSION DATA (Show)

__ci_last_regenerate	1783458617
last_page	https://v1.stage.onlinejobs.ph/jobseekers/info/44818
csrf-token	1ce9ca3ea16318053c90f1b5916cc42c

CONFIG VARIABLES (Show)

base_url	https://v1.stage.onlinejobs.ph
log_threshold	2
enable_profiler
index_page
uri_protocol	PATH_INFO
url_suffix
language	english
charset	UTF-8
enable_hooks	1
subclass_prefix	MY_
composer_autoload	vendor/autoload.php
permitted_uri_chars	a-z 0-9~%.:_\=\-\+\@?\&
enable_query_strings
controller_trigger	c
function_trigger	m
directory_trigger	d
allow_get_array	1
log_path
log_file_extension
log_file_permissions	420
log_date_format	Y-m-d H:i:s
error_views_path
cache_path
cache_query_string
encryption_key	OdBUArjiWg9I7u7bvAwQ7Fu35VB1kzga
sess_driver	files
sess_cookie_name	ci_session
sess_expiration	2678400
sess_save_path
sess_match_ip
sess_time_to_update	300
sess_regenerate_destroy
cookie_prefix
cookie_domain
cookie_path	/
cookie_secure
cookie_httponly
standardize_newlines
global_xss_filtering	1
csrf_protection
csrf_token_name	csrf_test_name
csrf_cookie_name	csrf_cookie_name
csrf_expire	7200
csrf_regenerate	1
csrf_exclude_uris	Array ( )
compress_output
time_reference	local
rewrite_short_tags
proxy_ips
ojadmin	JpjZkQN5A8l@^L
salt	+UFjSAT49tPZLtmU2CIG2FYN7pRhgsWyLHgSyQa6k3I=
queue_enabled
twilio	Array ( [sid] => AC00c0594045c6eef9407e8fff01f3d467 [token] => f0bfc0b73444a077894a43f5f75e6d41 [length] => 6 [from] => +639221200200 [code_expiry_seconds] => 14400 )
maintenance	Array ( [admin] => Array ( [verification] => ) [announcement_bar] => Array ( [show_slow_issue_message] => ) )
trustpilot	Array ( [to_email] => onlinejobs.ph+3d844ebf71@invite.trustpilot.com )
services	Array ( [google_tag_manager] => Array ( [id] => GTM-T5CQMS6P ) [chatgpt] => Array ( [secret] => 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 ) [claude] => Array ( [secret] => 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 ) )
v2_url	https://v2.onlinejobs.ph
replacemyself_secret_key	Kk1WpgTMkc4wBQOqC5rqCssdLhACKrsJeTtO1ywUkT4=
app	Array ( [app] => Array ( [command] => Array ( [map] => Array ( [OnlineJobs\Mailer\Command\SendEmailCommand] => OnlineJobs\Mailer\Handler\SendEmailHandler [OnlineJobs\Mail\Command\SendEmailCommand] => OnlineJobs\Mail\Handler\SendEmailHandler [OnlineJobs\Mail\Command\QueueEmailPendingCommand] => OnlineJobs\Mail\Handler\QueueEmailPendingHandler [OnlineJobs\Mail\Command\QueueJobEmailPendingCommand] => OnlineJobs\Mail\Handler\QueueJobEmailPendingHandler [OnlineJobs\Mail\Command\QueueUnapprovedEmailCommand] => OnlineJobs\Mail\Handler\QueueUnapprovedEmailHandler [OnlineJobs\Mail\Command\ProcessEmailQueueCommand] => OnlineJobs\Mail\Handler\ProcessEmailQueueHandler [OnlineJobs\Mail\Command\PutJobseekerEmailOnHoldCommand] => OnlineJobs\Mail\Handler\PutJobseekerEmailOnHoldHandler [OnlineJobs\Purchase\Command\RealEstateVaCourseCommand] => OnlineJobs\Purchase\Handler\RealEstateVaCourseHandler [OnlineJobs\Test\Command\HelloCommand] => OnlineJobs\Test\Handler\HelloHandler ) [middleware] => Array ( ) ) [providers] => Array ( [0] => OnlineJobs\Bus\BusServiceProvider [1] => OnlineJobs\Database\DbServiceProvider [2] => OnlineJobs\Mailer\MailerServiceProvider [3] => OnlineJobs\Support\SupportServiceProvider [4] => OnlineJobs\Employer\ServiceProvider [5] => OnlineJobs\Jobseeker\ServiceProvider [6] => OnlineJobs\Mail\ServiceProvider [7] => OnlineJobs\Postal\ServiceProvider [8] => OnlineJobs\Queue\ServiceProvider [9] => OnlineJobs\Courier\ServiceProvider [10] => OnlineJobs\Job\ServiceProvider [11] => OnlineJobs\Purchase\ServiceProvider ) ) )
meta	Array ( [facebook] => Array ( [input] => 1 [connect] => 2 [timezone] => 3 [url] => 30 [id] => 31 [photo] => 32 [name] => 33 [email] => 34 [review] => 35 ) [trust] => Array ( [government_id] => 4 [utility_bill] => 5 [selfie_photo] => 6 [profile_picture] => 7 [phone_number] => 8 [facebook] => 9 ) [verify] => Array ( [profile_picture] => 10 [government_id] => 11 [selfie_photo] => 12 [utility_bill] => 13 [address] => 14 [name] => 15 [reviewed] => 16 [government_group] => 28 [address_group] => 29 [mobile] => 38 ) [address] => Array ( [complete] => 17 [room_unit_no] => 20 [house_no] => 21 [street] => 22 [subdivision] => 23 [barangay] => 24 [city] => 25 [province] => 26 [postcode] => 27 ) [reviewed] => Array ( [similar_names] => 1 ) [name] => 18 [phone] => 19 [sms_verification_code] => 36 [resend_verification_code] => 37 [address_read] => 39 [first_name] => 100 [middle_name] => 101 [last_name] => 102 [edit] => Array ( [government_id_group] => 40 [address_group] => 41 [mobile_group] => 42 ) [salary_re_entry] => 103 [id_proof_recalibrate] => 104 [email] => 44 [mobile_verification_type] => 45 )
honeypot	Array ( [name_field] => my_name [enabled] => 1 )

HTTP_ACCEPT	/
HTTP_USER_AGENT	Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
HTTP_CONNECTION	Upgrade
SERVER_PORT	80
SERVER_NAME	v1.stage.onlinejobs.ph
REMOTE_ADDR	127.0.0.1
SERVER_SOFTWARE	Apache/2.4.58 (Ubuntu)
HTTP_ACCEPT_LANGUAGE
SCRIPT_NAME	/index.php
REQUEST_METHOD	GET
HTTP_HOST
REMOTE_HOST
CONTENT_TYPE
SERVER_PROTOCOL	HTTP/1.1
QUERY_STRING
HTTP_ACCEPT_ENCODING	gzip, br, zstd, deflate
HTTP_X_FORWARDED_FOR	216.73.216.215
HTTP_DNT