Our new Back End Senior Developer will be responsible for:-Designing, refactoring, and improving the functionality of our applications-Writing high quality, objectoriented backend code-Working closely with team members to deliver features that meet requirements-Tracking down and fixing bugs-Adding proactive and positive energy to our rapidly growing companySkills At a minimum, we require that you have:-Lot of experience with PHP web application development-Extensive knowledge in objectoriented programming (OOP)-Experience with MySQL/MariaDB (including joins, schema design and indexing)-Experience with version control like git, subversion, etc-Ability to work well in a team environment-Solid English communication skillsYou get bonus points for having:-Experience with other programming languages like Java, Ruby, Python, node.js, etc.-Experience with javascript, and javascript Frameworks (like jquery, angular, react, etc)-Experience with design patterns-Experience on high traffic sites-Experience with ModelViewController (MVC) frameworks-Experience developing in a Linux/Unix environment-Experience with batch process-Experience with NoSQL databases (like MongoDB, ElasticSearch, Cassandra, Redis,etc)-Experience with caching layers-Experience with bug tracking tools like Jira, Redmine, Bugzilla, etc-A great sense of humorExtras:-We offer a competitive salary-This position is based in our office in Buenos Aires, but we have flexible policies aroundoccasionally working remotely if needed-A company laptop and phone reimbursement (if required)-Nonstop availability of competitors for PlayStation 4-Weekly team lunches (from asado to empanadas, there is something for everyone)-Great candy corner, with plenty of snacks, drinks, fruits, etc.-Regular after offices in a great area of the city (Palermo), where the office is located-