Nabil Halim, Java Backend Senior & Cloud-Native

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Description

Senior Java Developer with 5+ years of experience in backend development (Spring Boot, Spring Reactor, REST, Angular).

Hands-on experience with event-driven architectures using Kafka at Sigfox — processing millions of daily IoT messages.

Cloud-Native operational practice: Kubernetes (CKAD), Terraform, ArgoCD, CI/CD Jenkins/GitHub Actions.

CKAD certified. Immediately available, 100% remote.

Languages

French
Native or bilingual
English
Fluent
Arabic
Native or bilingual

Workplace preferences

Can work on-site

Toulouse (up to 50km)

SIGFOX (Global IoT Network),
Java Software Engineer
TELECOMMUNICATIONS
July 2019 - July 2021 (2 years)
Toulouse, France
• - Designed reactive microservices using Spring Reactor and Kafka to handle millions of daily IoT messages.
• - Facilitated migration to a fully cloud-native architecture by adopting an API-first and event-driven model.
• - Increased throughput by 300% by optimizing IoT message reception with Kafka.
• - Collaborated with DevOps teams for seamless integration and application performance monitoring.
Lyra (Payment Leader France),
Freelance Software Engineer
January 2022 - April 2023 (1 year and 3 months)
Labège, France
• - Led the transformation of monolithic applications to a cloud-native microservices architecture.
• - Orchestrated Jenkins pipelines for deployment automation and used Ansible for environment configuration.
• - Deployed Docker solutions for fluid application containerization.
Java NestJs Node.js Ansible Docker
AI-Powered CV Optimization Platform
Developer
November 2025 - Today (9 months)
• - Designed and developed Cloudflare Workers ORM,
• - Implemented a comprehensive monetization system: freemium, credits, Stripe subscriptions with geo-localized pricing, and a referral program.
• - Sole developer on all 3 codebases (extension, backend, landing page) — from architecture to production deployment. AI integration (OpenAI & Anthropic) API's

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Certifed Kubernetes Application Developer (CKAD)
Cloud Native Computing Foundation
Certifed Kubernetes Application Developer (CKAD)
Bachelor Degree
Adrar Digit@l Academy, Pôle Numérique de l'ADRAR
Bachelor Degree