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Toufic Sleiman, Senior Software Engineer

Toufic Sleiman

Senior Software Engineer·CADD Emirates

United Arab Emirates

Master's degree, Cyber Security

Work experience

Total years of experience: 10 years, 6 months

Senior Software Engineer

December 2023 - Present

CADD Emirates

Dubai, United Arab Emirates

December 2023 - Present

Outsourcing for Sharjah Prevention and Safety Authority (Government)

- Streamlined migration of legacy systems to modern platform, improving efficiency and integration.
- Collaborated with stakeholders to translate business requirements into technical solutions.
- Developed full-stack applications using Java 17, Spring Boot, Docker, Redis, PHP, MySQL, SQL Server.
- Managed server deployments on Windows Server and Linux environments.
Company industry:
IT Services

Senior Backend Engineer

April 2023 - Present

Super Future

Dubai, United Arab Emirates

April 2023 - Present

Blockchain cryptocurrency VPN platform

- Architected complete backend infrastructure for VPN with subscription/payment microservices.
- Integrated Apple Pay → 23% increase in subscription renewal conversions and revenue.
- Built using Java 17, Spring Boot, Elasticsearch, MySQL, MongoDB, Redis on Apache Tomcat.
- Configured OpenVPN and FreeRadius servers; managed DevOps pipeline with GitLab, Jenkins, Nacos.
Company industry:
IT Services
Job role:
Information Technology

Senior Software Engineer

November 2018 - April 2023

Neorcha

Beirut, Lebanon

November 2018 - April 2023

Hotel and POS system integrations

- Migrated J2EE monolith to AWS microservices with JWT auth and multi-tenancy → 80% customer growth.
- Optimized schedulers → 30% performance improvement.
- Led team and created technical documentation → 20% efficiency increase.
- Developed REST/SOAP APIs, admin portal with AngularJS, and real-time WebSocket communication.
- Managed deployments using AWS (EC2, Lambda, S3, CloudWatch, CodeCommit), GitLab, Redmine, DataDog.
- Served customers across UAE, Iraq, Egypt, Germany, and France with 100% satisfaction rate.
Company industry:
IT Services
Job role:
Information Technology

Full Stack Software Engineer

April 2017 - November 2018

Applink

Beirut, Lebanon

April 2017 - November 2018

Public VPN platform

- Developed microservices using Java, Spring Boot, Hibernate on Eureka server.
- Created VPN desktop (WPF/C#) and Android applications; configured VPN servers with VMware ESXi.
- Integrated Google Ads, Analytics, payment gateways (Apple/Google Play, 2checkout, Coingate), and marketing tools
- (Intercom, Mailgun, Affiliate) → 12% revenue boost, 20% user retention increase.
- Collaborated with 3 outsourcing teams across UAE, Singapore, Pakistan, Russia → 98% satisfaction
Company industry:
IT Services
Job role:
Information Technology

Dotnet Net Software Developer

October 2015 - January 2017

Exquitech

Beirut, Lebanon

October 2015 - January 2017

Microsoft partner providing customized solutions

- Developed restaurant franchise inventory management system using ASP.NET (C#, VB), SQL Server.
- Automated web page generation via database tables → 40% decrease in development time.
- Deployed projects on Windows Server IIS.
Company industry:
IT Services
Job role:
Information Technology

Education

Lebanese University, Faculty of Science

January 2017

January 2017

Master's degree, Cyber Security

Lebanon

Lebanese University, Faculty of Science

January 2015

January 2015

Bachelor's degree, Computer Science

Lebanon

Skills

HTML CSS
Expert
HTML CSS
Expert
AngularJS
Expert
AngularJS
Expert
Spring
Expert
Spring
Expert
Java
Expert
Java
Expert
SQL
Expert
SQL
Expert
REST / SOAP APIs
Expert
REST / SOAP APIs
Expert
Bootstrap
Expert
Bootstrap
Expert
CSS
Expert
CSS
Expert
Javascript
Expert
Javascript
Expert
Spring Framework / Boot / Security / Batch
Expert
Spring Framework / Boot / Security / Batch
Expert
Ajax
Expert
Ajax
Expert
SQL
Expert
SQL
Expert
HTML / HTML5
Expert
HTML / HTML5
Expert
Microservices
Expert
Microservices
Expert
NoSQL
Intermediate
NoSQL
Intermediate
XML / JSON
Expert
XML / JSON
Expert
Java
Expert
Java
Expert
AngularJs
Expert
AngularJs
Expert
JQuery
Expert
JQuery
Expert
CLOUD MIGRATION
Intermediate
CLOUD MIGRATION
Intermediate
BUSINESS EXPANSION
Intermediate
BUSINESS EXPANSION
Intermediate
COMPUTER PERFORMANCE
Intermediate
COMPUTER PERFORMANCE
Intermediate
FULL STACK DEVELOPMENT
Intermediate
FULL STACK DEVELOPMENT
Intermediate
LEADERSHIP
Intermediate
LEADERSHIP
Intermediate
MICROSERVICES DEVELOPMENT
Intermediate
MICROSERVICES DEVELOPMENT
Intermediate
PROGRAM OPTIMIZATION
Intermediate
PROGRAM OPTIMIZATION
Intermediate
SOFTWARE ENGINEERING
Intermediate
SOFTWARE ENGINEERING
Intermediate
SOFTWARE MODERNIZATION
Intermediate
SOFTWARE MODERNIZATION
Intermediate
USER FLOWS
Intermediate
USER FLOWS
Intermediate
VB.NET
Expert
VB.NET
Expert
ASP.NET
Expert
ASP.NET
Expert
PHP
Expert
PHP
Expert

Social profiles

Languages

Arabic

Native Speaker

English

Expert

French

Intermediate

Hobbies and interests

Gym
Reading