Lionel Tesolin, Developer in Málaga, Spain
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Lionel Tesolin

Verified Expert  in Engineering

Software Developer

Málaga, Spain
Toptal Member Since
June 26, 2019

With over 16 years of experience in the IT sector, Lionel has vast expertise that allows him to apply his know-how and experience across a variety of industries. He has a solid technical background and mastering in all areas involving Java, Angular and cloud computing. He's interested in cutting-edge technology, is an active opensource contributor and always striving to be up to date with the latest and innovative development opportunities.


Kubernetes, Spring Boot, Angular, IaaS, Platform as a Service (PaaS), Oracle
Smart GWT, Essbase, Oracle Database, DB, Oracle, Spring Batch, Spring Boot, Java
AngularJS, Flex, Play Framework, Spring, Java




Preferred Environment

Spring Boot, Java, Git, Visual Studio Code (VS Code), Spring Tool Suite (STS), Ubuntu

The most amazing...

...thing I've done was migrate a strategic financial application from a multidimensional language (HOLOS) into a modern Java-based web application.

Work Experience

Sales Consultant

2016 - PRESENT
  • Provided pre-sales technical/functional support to prospective clients and customers while ensuring customer satisfaction with minimal supervision, through online/in-person sales efforts.
  • Acted as a technical resource for less experienced Internet Sales Consultants.
  • Developed and delivered high-quality standard Oracle presentations and demonstrations.
  • Presented and articulated advanced product features and benefits, product future direction and overall Oracle solutions.
  • Designed, validated, and presented Oracle software solutions to include advanced product concepts, future direction, and 3rd party complimentary products.
  • Developed and managed reference sites through high quality technical, professional client relationships.
  • Supported sales team in online/in-person selling efforts with minimal supervision.
  • Developed and delivered proposed solution to customers including demo applications made in Angular 7 and Spring Boot.
  • Developed and delivered internal applications used on Event and Convention to show how to use Oracle Services with Open source framework like, Angular 7, Spring Boot, Kubernetes and Docker.
Technologies: Kubernetes, Spring Boot, Angular, IaaS, Platform as a Service (PaaS), Oracle

Technical Architect

2013 - 2016
  • Created an outage monitor that automatically restart the application on the disaster recovery site.
  • Created batch execution for offline execution of long financial consolidations.
Technologies: Smart GWT, Essbase, Oracle Database, DB, Oracle, Spring Batch, Spring Boot, Java

Technical Expert

2012 - 2013
  • Worked on several projects owned by the Luxembourg Chamber of Deputies including analysis of existing stack, project mavenization, documentation analysis and production, management and deployment on a WebSphere portal.
  • Worked in Royal Bank of Canada as a code reviewer, performance tester, and unit tester. In charge of the redevelopment of a synchronization mechanism that dynamically exchanges notifications of bugs (bug trackers) between two bug tracking tools (Redmine used internally and HPQC used in the bank).
  • Worked on the main fund application based on Java and Apache Synapse.
Technologies: AngularJS, Flex, Play Framework, Spring, Java

Technical Expert

2010 - 2012
IKE Consulting - ING Bank
  • Created several new services exchanging with the mainframe (SOA).
  • Acted as the lead developer of the new internal invoices and payroll management tool for internal employees.
Technologies: Workflow, JDBC, MyBatis, MQSeries, ECM, Microsoft, Apache Tomcat, Blaze, PureMVC, Adobe Flex, Java

Technical Architect

2008 - 2010
Delogica - Banco Inversis
  • Served as the lead architect for the migration of the internal/external portal from Web 1.0 to a modern portal.
  • Developed a new logistic application for CLH (leader company for transportation and storage oil products).
Technologies: TIBCO, jQuery, Adobe Flex, Oracle, Scripting, Ant Design, JAXB, SOAP, WebLogic, Apache Tomcat, Hibernate, Java, Flex


2007 - 2008
  • Developed and sold a digital signage product for hotels and insurance.
  • Rewrote and modernized an existing application in the field of waste collection and recycling and industrial waste.
Technologies: ActionScript 3, AMF, Flex, MySQL, SOAP, Apache Tomcat, Hibernate, Java

Java Expert

2005 - 2007
  • Worked for a global tourism provider as a developer.
Technologies: Oracle, PL/SQL, Oracle Application Server, Hibernate, Axis, JSF, Java

Banco Inversis

Worked on the internal/external customer portal.

Impact Event ChatBot
You can start to chat with this bot (if you know French). It was made for demonstration purpose for the Impact Event in France. It can show event details, take feedback, and send a question to the event speaker in real time. A WebSocket based application is then used by the presenter to answer the questions.
1997 - 2003

Master's Degree in Computer Engineering

Università degli studi di Padova - Padova, Italy

1997 - 2001

Postgraduate Degree in Physics

Università degli studi di Padova - Padova, Italy


Oracle Cloud Infrastructure 2018 Certified Architect Associate



Building Cloud Native Applications using Visual Builder Ed 1 LVC



Lombok, OpenAPI, MyBatis, Sikuli, REST APIs, FlatBuffers, Smart GWT, JDBC, JAXB, jQuery, AMF, Axis, Node.js, JMS, JMX


Amazon Simple Notification Service (Amazon SNS), Amazon Elastic Container Registry (ECR), AWS CloudFormation, MapStruct, Apache Maven, Gradle, Oracle DBaaS, Apache Tomcat, FL Studio, Sahi, Jenkins, Zabbix, Wercker, Git, Spring Tool Suite (STS), MQSeries, Ansible, Docker Swarm, Kibana, Logstash, ActiveMQ, Cron, Unity 5


Guice, Spring Core, Spring Boot, Spring Security, Spring Batch, Spring AOP, Spring JDBC, Spring, Angular, Flex, gRPC, JUnit, Unity, jMonkeyEngine, PureMVC, Play Framework, AngularJS, Adobe Flex, Hibernate, Ant Design, JSF


TypeScript, Java, ActionScript 3, Java 11, PHP 5, Python, C#, JavaScript, XSLT, Bash Script


Aspect-oriented Programming (AOP), Object-oriented Programming (OOP), AOP, Microservices Architecture


Amazon Web Services (AWS), Oracle Cloud Infrastructure (OCI), Godot, Linux, Docker, Ubuntu, Visual Studio Code (VS Code), Oracle Database, Microsoft, Oracle Application Server, Kubernetes, Apache2, Oracle, Oracle Autonomous Data Warehouse


MongoDB, Spring Data JPA, Spring Data REST, Databases, DB, Essbase, MySQL, PL/SQL, JBoss Infinispan, Elasticsearch, Oracle RDBMS, MariaDB, H2, Apache Derby, Oracle Java Cloud Services, Oracle Integration Cloud Service, Oracle Process Cloud Services


Music Composition, Observer Pattern, Function as a Service (FaaS), Platform as a Service (PaaS), IaaS, Blaze, ECM, Workflow, WebLogic, SOAP, Scripting, TIBCO, Collectd, Functions, Oracle Digital Assistant, Oracle BPM, Elliptic Curve Cryptography

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