Technical support at the code level and development of the current project

Goal: Technical support is required at the code level and the development of the current working, implemented project - HR management software.
Tasks:Work with a large legacy project that was written by one developerProvide technical supportEliminate possible errorsImplement all requests for improvement and development of the system.Knowledge:RubyRuby on RailsKnowledge of algorithms and data structures.Understanding of the principles of working with data, experience with PostgreSQL databasesAccurate knowledge of HTMLknowledge of JavaScript basics to improve the functionality of web applications.Basic understanding of modern JavaScript frameworksKnowledge of the basics of CSS for styling web applicationsAbility to work with CSS preprocessorsAdvanced skills in working on the command line and writing shell scripts to automate tasksUnderstanding the basics of Unix/Linux systems, knowledge of basic commands and utilitiesBasic knowledge of CI/CD processes to automate the build and deployment of applicationsKnowledge of client-server architectureUnderstanding of RESTful API and principles of interaction with the server.
HOURLY RATE NEGOTIABLE