Hedi Harzallah
Verified Expert in Engineering
DevOps Engineer and Developer
Paris, France
Toptal member since August 5, 2022
Hedi is passionate about new technologies and has a strong record of successful projects in cloud, web development and data science. After previous experiences as team lead, assistant professor, and technical architect, he is part of the SRE team in Talend, where he has built and maintained a multi-could infrastructure supporting SaaS services. In all his jobs, Hedi has shown good interpersonal skills and has been proactively working toward delivering quality projects while respecting deadlines.
Portfolio
Experience
- Linux - 16 years
- DevOps - 6 years
- CI/CD Pipelines - 6 years
- Cloud - 6 years
- Terraform - 5 years
- Kubernetes - 5 years
- Site Reliability Engineering (SRE) - 1 year
Availability
Preferred Environment
Amazon Web Services (AWS), Kubernetes, Terraform, DevOps, CI/CD Pipelines, Site Reliability Engineering (SRE), Flux, GitOps, Linux, Python 3
The most amazing...
...experience I've had is contributing to the availability of SaaS products of Gartner magic quadrant company as an SRE engineer.
Work Experience
Site Reliability Engineer (SRE)
Talend
- Automated migration tasks, synced with the product team and PMs, and managed major version product migration.
- Built and ran Talend Cloud observability infrastructure, including Terraform, Kubernetes, AWS, Prometheus, Thanos, Kibana, Grafana, and Tempo.
- Assisted the development team in the set up of observability best practices.
Principal Cloud DevOps Engineer
Proxym Group
- Managed the generalization and dissemination of DevOps, Cloud, and CI/CD culture and practices.
- Designed system and web architecture and performed technical follow-up on projects.
- Led technical follow-up of prototypes and PoC developed internally.
- Audited projects and assisted and supported the development teams.
Team Lead
Valomnia
- Designed and set up the solution's architecture. Performed feasibility study and estimation.
- Developed prototypes and assisted the product owner in the product backlog set up.
- Led the development, code review, and implementation of internal processes.
Assistant Professor
University of Sousse
- Imparted lectures in multiple engineering schools and conducted numerous courses, including machine learning, computer vision, Symfony web development, and C programming.
- Tutored students at the end of studies projects and research projects.
- Led a master's degree with tasks of student selection and meeting management.
R&D Engineer
Milpix
- Stabilized, maintained, and improved the image search engine.
- Conducted feasibility studies and assisted pre-sales efforts through the development of prototypes.
- Developed APIS and technical documentation writing.
PhD Candidate
Inria
- Studied state of the art in the fields of artificial intelligence and computer vision.
- Ranked first in the worldwide object detection reference challenge.
- Published in a class A conference and was accepted for an oral session (3% acceptance rate).
- Led large-scale experimentation on a cluster of hundreds of nodes.
Experience
Talend Cloud
https://www.talend.com/I participated in the product availability, stability, and automation of operations and implementation of observability best practices. I was part of the SRE team, handling all Talend Cloud infrastructure deployed over AWS and Azure, focusing on the observability infrastructure (logging, monitoring, and tracing).
All infrastructure was provisioned as code via Terraform or Ansible, and CI/CD pipelines were implemented via Jenkins and GitHub Actions.
Special Olympics World Games
https://www.specialolympics.org/what-we-do/games-and-competition/world-games/world-games-abu-dhabi-2019Dubai Municipality Platform
https://www.dm.gov.ae/Greenmetrics
Scope
• Feasibility study, prototyping, and cost calculation
• Design of system architecture
• Development team follow-up, participation in technical decisions, and unblocking the team
• Design and implementation of CI/CD pipelines in GitLab
• Containerization of the application
• Highly available deployment on AWS
Quartus
https://www.quartus-residentiel.fr/Techy
Education
PhD Degree in Computer Science
Université de Grenoble - Grenoble, France
Engineer's Degree in Computer Science
National School of Computer Science - Tunis, Tunisia
Certifications
Prometheus Certified Associate (PCA)
The Linux Foundation
Google Cloud Certified — Associate Cloud Engineer
Google Cloud
AWS Solutions Architect Professional
Amazon Web Services
Certified Terraform Associate
HashiCorp
Certified Kubernetes Administrator
CNCF
AWS Certified Solutions Architect Associate
AWS
Skills
Libraries/APIs
Thanos, OpenCV, Node.js
Tools
Terraform, Amazon EKS, GitLab CI/CD, Helm, Docker Compose, AWS IAM, Amazon Elastic Container Registry (ECR), Amazon Virtual Private Cloud (VPC), Git, GitHub, Docker Hub, Ansible, Logstash, Jenkins, Jira, Kibana, Amazon Elastic Container Service (ECS), Grafana, Amazon Simple Queue Service (SQS), Amazon CloudWatch, AWS Batch, Traefik, Azure Kubernetes Service (AKS), MATLAB, Sentry, AWS CloudFormation, CircleCI, Keycloak, Beanstalk
Languages
Bash, Bash Script, Python 3, PHP, C++, JavaScript, Python, Java, TypeScript
Paradigms
DevOps, Continuous Integration (CI), Continuous Delivery (CD), Web Architecture
Platforms
Kubernetes, Linux, Docker, Amazon Web Services (AWS), Amazon EC2, Opsgenie, Google Cloud Platform (GCP), Apache Kafka, Azure, OpenStack, Blockchain
Storage
Amazon S3 (AWS S3), MySQL, PostgreSQL, NoSQL, Elasticsearch, Cassandra, Redis, OVH, Datadog, Data Pipelines
Frameworks
Flux, Spring Boot, NestJS
Other
CI/CD Pipelines, Site Reliability Engineering (SRE), Computer Science, Cloud, AWS Cloud Architecture, Cloud Architecture, AWS Certified Solution Architect, GitOps, System Architecture, Web Development, Prometheus, GitHub Actions, Artificial Intelligence (AI), Amazon RDS, DNS, Security, Networking, API Gateways, Content Delivery Networks (CDN), Amazon Kinesis, Computer Vision, Big Data, AWS CodePipeline, Network Security, Web Security, Monitoring, Observation, Data Engineering
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