Xavier Salvador Nomen
Verified Expert in Engineering
Software Engineer and Full-stack Developer
Barcelona, Spain
Toptal member since September 8, 2022
As a software engineer with a degree in mathematics from the Polytechnic University of Catalonia, Xavier provides technology solutions that solve customer needs. He has worked on multiple projects, from an electronic voting system for Scytl to web applications for Deutsche Börse. Co-workers and managers define Xavier as an efficient, responsible, committed person with a great capacity for adaptation.
Portfolio
Experience
- SQL - 5 years
- Spring Boot - 5 years
- Hibernate - 5 years
- REST APIs - 5 years
- Java - 5 years
- Microservices - 4 years
- Java Message Service (JMS) - 3 years
- Amazon Web Services (AWS) - 2 years
Preferred Environment
Linux, IntelliJ IDEA
The most amazing...
...thing I've done is work as a back-end developer for an electronic voting company on the French elections.
Work Experience
Senior Back-end Developer
Deutsche Börse Group
- Created an internal management tool with multiple REST APIs and Camel consumers.
- Developed a web application that managed and replicated information to other external services.
- Tracked and fixed bugs reported from the ST and PT environments.
- Served as a second developer on a system modernization project.
- Modeled a SQL database schema with multiple audit data.
- Handled insertion, update, deletion, and search of dynamic data.
Senior Full-stack Developer
Masvoz (acquired by Enreach)
- Developed authentication and authorization services with OAuth 2.0 protocol.
- Led and was part of a Scrum team as a scrum master and back-end developer.
- Integrated a chat feature with Google Dialogflow, which is used by the front end in JavaScript and React, WhatsApp, and email based on a microservices architecture.
- Migrated existing legacy services to microservices in AWS.
- Designed architecture and schema of MySQL and PostgreSQL databases.
Java Back-end Developer
Scytl
- Developed and integrated electronic voting platforms using REST APIs, JUnit tests, and microservices in Java 8.
- Served as the first developer on a US election results project.
- Created some automated Ansible deployment scripts.
- Designed and elaborated dashboards in Splunk using queries.
- Tracked and fixed bugs after reading dashboards and logs.
- Maintained and improved a SQL database deployed on OpenStack.
Junior Full-stack Developer
BaseTIS
- Developed a business-to-business (B2B) web and mobile application using Java.
- Tracked and fixed bugs reported by our clients in meetings.
- Participated in definition meetings as well as retrospectives.
- Managed a database creating schema and SQL queries.
Experience
Multichannel Chatbot
https://enreach.es/Education
Bachelor's Degree in Mathematics
Polytechnic University of Catalonia - Barcelona, Spain
Certifications
EF SET English Certificate | C2 Proficient (73/100)
EF Education First
Skills
Libraries/APIs
REST APIs, Java Message Service (JMS), Jenkins Pipeline, Velocity.js
Tools
Apache Maven, Git, Jira, Jenkins, Apache Tomcat, WildFly, Subversion (SVN), Keycloak, ActiveMQ, MATLAB, LaTeX, Ansible, Splunk
Languages
Java, Java 11, SQL, Bash Script, Java 8, Java 6, JavaScript, HTML, AMPL, C++, Python
Frameworks
Spring Boot, Hibernate, JUnit, Spring, Angular, Camel
Paradigms
Microservices, Scrum, Kanban
Platforms
Linux, Java EE (Jakarta EE), JBoss, Amazon Web Services (AWS), Azure, Oracle, Windows, Docker, Heroku, Android, OpenStack
Storage
MySQL, H2 Database, PostgreSQL, MongoDB
Other
Back-end, APIs, Consul, Teams
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