Senior Java Backend Developer
Back-end Engineer
Available for hire
Years of
experience
5+ years
Experience
level
Senior
Available
for
Full-time, Contract
Available from
03 Nov 2026
I’m a Senior Java Backend Engineer with 5+ years of experience building scalable microservices and production APIs using Java, Spring Boot, REST, JPA, PostgreSQL, Docker, Kubernetes and CI/CD. I enjoy solving complex backend problems, improving system reliability, and taking ownership from development to deployment. I’m looking for a challenging role where I can contribute to impactful products while continuing to grow technically.
Skills
Languages
No languages.
Employment History
Backend Engineer at
Byrsa Tech
Current
2021
-
Now
Cloud Infrastructure Migration
● Led migration of 8+ microservices from Clever Cloud to Scaleway Kubernetes, owning containerization
and infrastructure strategy.
● Reduced deployment time 70% by building automated CI/CD pipelines (Jenkins).
● Optimized Kubernetes resource allocation and autoscaling, increasing system stability during peak
load.
● Practiced TDD to write comprehensive unit/integration tests (JUnit, Mockito, Testcontainers),
safeguarding service behavior throughout migration.
Defmarket - Benefits App
● Architected OAuth2 authentication and Role-Based Access Control (RBAC) for a production platform
serving 10,000+ users, strengthening security and access governance.
● Reduced API response time by 35% through query optimization and caching strategies.
● Integrated Stripe payment processing to handle high transaction volumes securely and reliably.
OAuth2 Authorization Server
● Architected and delivered a centralized OAuth2 authentication platform securing 5+ production
applications and processing over 50,000 authentication requests per day.
● Integrated RabbitMQ for asynchronous communication between the authorization server and
connected applications.
Real Estate Management Web App
● Designed and developed a backend-driven web platform with server-side rendering, optimizing data
fetching and response times.
● Reduced page load time by 50% through optimized architecture and rendering strategy.
● Implemented a scalable filtering system supporting thousands of listings with efficient query handling.
Education
Software Engineer at
International Institute of Technology
2018
-
2021
Bachelor's Degree in Computer Science and Multimedia at
Higher Institute of Computer Science and Multimedia Sfax
2018
-
2018