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Terence Taih

Terence Taih

Senior Java Developer

Vietnam - Tests: 2 - Portfolio: 1

I'm a Senior developer with more than 5 experience years on enterprise-grade development. My strongest skill is Java. I have worked with many Java framework from web to database. - Web: Play framework, Tapestry framework, Struts, Spring MVC. - Database: Hibernate (MySQL), Hector (Cassandra), Morphia (Mongo), Redis - Cache: Hazelcast, MemCache. - Search: Elastic search, Apache Lucene - API: Resteasy, Jersey - Beside them, I usually work with: Linux, Jetty, Tomcat, JBoss, Nginx, Amazon EC2, Amazon S3, Amazon CDN, OAuth, Restful API, Web service, Json processing (org.json, jackson) - And have worked with (administration and query ) both database SQL (MSSQL, MySQL, ...) and NoSQL (Cassandra, Mongo, Redis …). About another language, I can code with Nodejs well. I already build project with Nodejs, express and MongoDB. I'm looking for long-time contract, in challenge/interesting project, get exciting experiences to archive my dream: To become an excellent software architect. I will try my best to perform projects, meet all requirements and believe on making customers satisfied.

96% Job Success
$15.00 /hr
218 hours

Jake B.

Jake B.


United States - Tests: 1 - Portfolio: 9

I am an established web-developer and systems administrator with a focus on full-stack LAMP development. As a programmer I have experience with PHP based frameworks such as laravel and wordpress. My work is clean, responsive, well documented and SEO friendly. I have spent much of my time working on and leading teams and have experience with version control and other collaboration tools. As a systems administrator I have built and maintained clusters on AWS and Softlayer. I have expertise in the areas of disaster recovery, database management, resource allocation, log management and architecture for small and medium sized clusters. I have a network of graphic designers and frontend developers that I can call upon if need be. I have formal training in project management with a focus on the agile and waterfall methodologies. Feel free to check out my website at for more examples of my work. Technologies I have recently done projects with: Laravel 4 and 5, Twitter Bootstrap, Wordpress, Angular JS, Jquery, PHP, Python, Java, Mongo DB, MYSQL, Javascript, CSS, LESS, HTML 5, Git, Jira, Amazon Merchant Services

83% Job Success
$75.00 /hr
80 hours

Zachary I.

Zachary I.

Node.js, ElasticSearch, & Angular Specialist

Canada - Tests: 4 - Portfolio: 6

I'm a battle hardened full stack developer who delivers high quality work and valuable feedback in bringing your idea to life. I'm commonly working with tools like Node, Angular, MongoDB, ElasticSearch and RabbitMQ. I am most comfortable working on projects with a unique challenge that isn't solvable by html alone. I've worked on applications in, web scraping. financial trading, gaming & betting, business intelligence, and community driven sites with complex relational data. I am best suited in a full-stack role building business class or highly interactive websites/applications from the ground up. Like most developers, I've worked with an obsessive amount of API's, SDK's, and frameworks like; Salesfoce, MetaTrader, DigitalOcean, Amazon, Insightly, GoogleApps, Twillo, Mailgun, Bitcoin Blockchains, Stripe, Linkedin, Firebase,, Spark, and many more. I enjoy using API's as much as I enjoy developing them. You can find me on github at

92% Job Success
$35.00 /hr
161 hours

Roman P.

Roman P.

Senior Developer

Russia - Tests: 3 - Portfolio: 2

I am senior PHP Developer more than 8 years. More than 100 projects of varying complexity were done by me or under my leadership. I prefer to build projects from scratch, create project's architecture. What will you get by hiring me: 1. I have a lot of experience in designing applications, I will help to make the product specification, and avoid many problems in the future. 2. I perfectionist and get everything to work without bugs. 3. Always online. I am available most of the time of day, so respond promptly to your messages. 4. I always meet your needs and deadlines. 5. I have experience with git and many bug-tracking systems and I will share current progress with you such often as you want. Listed below are my experience and skills. — ZF2, CodeIgnitor but most likely Symfony2, — JavaScript; — MySQL, Oracle, PostgreSQL; — Git; — PHPUnit — CMS: Modx, Bitrix, Joomla, Prestashop — phantomJS, selenium — Redmine, Jira; — Perl, Ruby — Administration: Linux, Mac OS. I have a Specialist (Russian academic degree more than Bachelors) in Software Engineering from Rostov State University.

$40.00 /hr
232 hours

Venelin I.

Venelin I.

Full Stack Developer - MEAN(Node Angular)/Ruby on Rails/WordPress/PHP

Bulgaria - Tests: 10 - Portfolio: 16

I am a full stack web developer with more than 15 years of experience. My dream here is to transform my skills and experience I gained offline into great web solution that satisfy you customers' requirements, make you feel unique and make your business lead the industry and market. *Lead Web developer/Project manager (with 3+ years of career in US ,Canada and Australia companies) -Javascript Architect with Strong Front-end skills: Angular.js Backbone.js , Knockout.js , Ember.js, React.js /Flux -Twitter Bootstrap, Zurb Foundation, Kendo UI -MEAN(mongo express angular Node.js) stack developer -5 years of full stack Ruby on Rails development -14 years of web sites development based on PHP/Ajax/jQuery/HTML5/CSS3 -6 years of WordPress themes and plugins development -7 years of C#, ASP.NET MVC 4,5 ,Umbraco development -Well versed in using Laravel/Code Igniter /Symfony /Yii /Zend Framework -Adopting agile methodology in software development -Artificial Intelligence expert -ERP/CRM Expert -Professional Linux/UNIX system administrator -Various language skills -C/C++/C#, .NET/Java/Perl/Python, Objective-C/Android You can always expect something new, something different from me! I enjoy challenges and believe in hard work, integrity and positivism. I will be there for you whenever you want to get your idea materialized or start out something new! Thanks.

73% Job Success
$55.56 /hr
4,195 hours

Usman T.

Usman T. Agency Contractor

Expert Application Developer Android, iOS, Web

Pakistan - Tests: 8 - Portfolio: 12

Over the last 10 years, I have developed a wide range of websites using HMTL, PHP, and MySQL including sites for a big social networks, startup companies and small businesses. My core competency lies in complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business. I do have extensive experience in optimizing the website, i do have a very good skill to deploy a website on multiserver deployment environment. I also have a team of very talented developers working with my agency, and whoever is doing project I always ensure that my "Clients" always gets the best service, if I have to jump in to help I do not have any problems to get my hands dirty, that is why I have over 90% returning customers. So hire me and my team and become part of a family that will never disappoint you. For the optimization purpose i do have a experience with memcached, sphinx search engine, no sql databases like redis, and having experience with documented databases like mongo db.


$30.00 /hr
899 hours

Azwar K.

Azwar K. Agency Contractor

Web & Mobile Developer . eCommerce . WP . Angular . Node . Meteor JS

Canada - Tests: 2 - Portfolio: 13

Over the last 12 years I have designed & developed web & mobile applications for 100s of agency partners & clients. Some of the most notable projects I have worked on include work for brands like Motorola, GM, IBM, Blackberry (RIM), Davis & Henderson, Public Storage, Microsoft, AMD, Maytag, Oklahoma City, Canada's government, York University . Florida International University and University of Toronto. Objective: My goal is to utilize my experience, communication skills & problem solving skills to deliver value and build awesomeness. Profile Summary: - eCommerce solutions bring in over $4,000,000 in revenue to clients - 100,000+ mobile application downloads through the iOS & Google play stores. - Designed & Developed applications used by over 15,000,000 annual users - Membership sites with over 20,000 registered users Try me for a week risk free with full protection under upWork's money back guarantee. Technologies I have worked with include: Magento, WordPress, LAMP, PHP, Laravel, python, mongo, mongodb, MEAN (Mongo Express JS Angular Js Node JS), javascript, sql, postgres, postgresql, mysql, wordpress, html, html5, jquery, highchart js, Highstock js, php yii, cake php, laravel, twitter bootstrap, node js, amazon aws, angular, backbone, java play framework, agile scrum methodology, jira, confluence, project management, consulting, management consulting, startups developer, web engineering, cake php, phalcon php, code igniter, woocommerece, ecommerce, membermouse , bbpress, forums, salesforce api, stocks api, api development, ETL layer, linux / unix administration, shell scripting, automation, ruby on rails, django framework, semantics, sparql, i18n, internationalization and localization, user management software, user subscriptions, paid & unpaid memberships, scrapy framework, web scraping, web crawling.

Associated with: 247 Labs Team

94% Job Success
$59.99 /hr
3,581 hours

Andrei Volkov

Andrei Volkov Agency Contractor

Linux specialist (Sec/Opt/Dev, C/Perl/Python/PHP/BASH)

Belarus - Tests: 5 - Portfolio: 13

Important: ------------------- Enhanced shield of your Web application with mod_security! Should be always. It is task #1 after installation ANY web application! ------------------- About Me and more: ------------------- I have over 16 years of work experience with Linux systems. This is the list of software and technologies with which I deal. This list is not full and expands day by day. I always can find right decisions if I found some problems. And I am always interested in looking for mostly economical and productive solutions. Of course, Cpanel, WHM, Webmin, Plesk .... I know how are working these web-wrappers and I support their. I can will tune and to make the checking of these wrappers. But that more important !! I can work without this))) Directly use configuration files of services and etc etc. Usually, it is better way on dedicated servers. ) TCP, IPv4 , IPv6, IPX ... - WiFi, WEP, WPA, WPA2 ... - SElinux, Apparmor, Smack, Tomoyo ... - LAMP ( Apache, Nginx, PHP, Perl, Mysql, Mongo), REDMINE ... - Cpanel, Zpanel, ISP ... - MySQL clustering and replication DNS servers ... - SENDMAIL, EXIM, POSTFIX (POSTFIXADMIN,MYSQL,DOVECOT,POLICYD) ... - HPC system: Torque, Maui, Moab for HPC clusters, Infiniband, FC interconnect, iSCSI, SCST, DRBD, OFED, OPENMPI ... - OpenLDAP ... - VPN with OpenVPN, PPTP, StrongVPN ... - Nagios, Zabbix, Ganglia, OSSEC ... - SVN, CVS, GIT ... - KVM, Xen, OpenStack, Proxmox ... - NBD, RAID, LVM ... etc etc During these years I have been in a large number of tasks related to administration of network devices, as well as with simple and complex server systems. I manage servers for the HPC tasks and for network infrastructure of Internet and Intranet - DNS,DHCP,*FTP,HTTP(S),MAIL etc etc. The main goals - the monitoring of the performance and the security. I also implement tasks of data backup and troubleshooting, support for the users. I have comprehensive work skills with systems based on Debian, Redhat, CentOS, SLES, OpenSuse. I've got more than 8 years of experience in developing the different software with use of C, Perl, Python, Bash, HTML on system and user levels. For example, very important skill in developing and the modification of RPM packages (rpmbuild, rebuild, kernels), custom kernels and etc etc. ------------------- Often: ------------------- How the standart service for VPS's and VDS's projects and dedicated servers: IDS, IPS, the control of contents of log's files, the control of load of the cpu, the memory, the hard disks; the backups of the databases and the files; install or update software, consultations. Emergency call via sms to cell phone. ------------------- STOP Windows and U/K/buntu etc. TIPS WITHOUT PAYMENT: ------------------- 1. VERY OFFTEN: IF YOURS WP WAS HACKED 1. disable plugins 2. execute # diff -r dir1 dir2 3. repeat for plugins if you have last version of WP code: ~ 80% cases - problems: plugin low quality (look on author: from where and who is) ~ 15% cases - problems: theme low quality (look on author: from where and who is) ~ 5% 0day of WP also you need disable all shell function in php and enable suphp/suexec modes. STOP Windows and U/K/buntu etc. TIPS WITHOUT PAYMENT: ------------------- 1. I am getting a lot questions about reliability and quality distributives/clones Ubuntu. Results on practice - Ubuntu clones - worst for server. It is truth. If you $buntu guy, I can't help you right now. I only can recommend Debian way for server. =============== 3. Nginx of course is good program. For small/middle vps. But in serious projects - apache. Nginx will be suitable for frontend. It is only practice. Always for all web application should be mod_security module. Firewall of level of web application on 7 level of OSI. Each web application/site should be under own user in environment of vps or on dedicated servers. =============== 4. By topic Wordpress. For optimisation services of OS , namely system IO(type of disks or partitions) and DB(type of engines of tables), need to use empty installation (default variants). Most problems of work WP contains in itself - customized plugins or themes. For analyze pages need begin with such services as =============== Sunday - day of rest. Or in emergency case - payment with double rate. best regards, Andrei / PS: With love from USSR. ;-)

Associated with: UPWORK.LINK

100% Job Success
$16.00 /hr
1,023 hours

Alex K.

Alex K. Agency Contractor

Python/Django, Node.Js/Js(Express,Angular,cet), PHP, MODx, html5, css

Russia - Tests: 13 - Portfolio: 1

Over the last 8+ years of experience in web developing industry. I have experience in following fields: PHP (Zend Framework, MODx, Slim(MF), Paris+Idiorm, Twig Template Engine etc), Python (Django, core), Databases(MySQL, MSSql, mongo), Nodejs, Flash (Actionscript 2/3, Flex 4), CSS, (X)HTML(5), Javascript(JQuery, JQueryUI, Angularjs), Git. Solid administration skills: linux, apache, nginx, php-fpm, git, gitlab, redmin, mysql, mongodb, nodejs, postgresql, zabbix, vagrant, chef. My objectives is constatly growing and participate in the interesting projects. I'll do my best.

Associated with: Web Development & Design & Administration Team Agency

100% Job Success
$25.00 /hr
492 hours

Gaston P.

Gaston P. Agency Contractor

VOIP Cloud, Plivo, Twilio,AWS, Flask, Python, Developer and Architect

Argentina - Tests: 6

Hi, my name is Gaston Pisacco, I live in Buenos Aires and have long experience with large deployments and high availability apps and technologies like python, j2ee, provisioning systems , messaging middleware , devops, AWS, Unix/Linux admin and legacy systems integration all of them developed while working on first line companies like Network Solutions, IBM, Telefonica and Citibank. I've long experience developing large scale software, I spend several years working in the telco industry and have experience integrating IVR with CRM systems. I've experience integrating phone and apps, most of them integrating Plivo or Twilio with Asterisk and internal apps as SugarCRM/Zendesk to retrieve users/tickets info and IVR workflow managements (actually I wrote a workflow engine based on Amazon SWF to handle IVR integration including a workflow editing javascript front end). I also have experience using WebRTC since it's beta times, so integration could be 100% web based solution Also I have several years of work in big telcos integrating software with pstn, isdn and legacy traditional telephony systems I've lead development and sysadmin teams during several years and I speak English, Spanish and some basic Portuguese. I like cutting edge technology, innovative solutions, travel and work with offshore teams. I can program java,perl, python, java script ,bash among other languages, help you with your apps and infrastructure architecture, adapt them to run on cloud infrastructure like Google App Engine or Amazon AWS.

Associated with: Droptek Talents

86% Job Success
$38.89 /hr
1,162 hours