Linux Specialist | Systems Engineer | IT Consultant
Highly qualified Linux Systems Engineer, with more than 17 years of work experience in companies from the Telecom, Financial Markets, Internet Services and Software Development areas. I hold a BSc. and Licentiate Degrees in Computer Science, a Postgraduate Diploma in Computer Networks, and also relevant certifications and courses such as RHCE, RHCSA, LPIC-I and LPIC-II.
Freelancing and Consulting Services
I offer freelancing and consulting services in Linux Systems Engineering & Administration, DevOps and IT Security. The services can be hired locally, depending on the location, or remotely, worldwide via the Internet. Below are some examples of services I have successfully carried out for some companies, with the main related technologies (but not limited to them).
Linux and network services tuning for specific scenarios (low latency, high throughput etc.)
play_arrowContainers and Virtualization:
Docker
VMware
Linux KVM & Red Hat Virtualization
Linux Containers (LXC)
play_arrowHigh Availability (HA) and High Performance Clusters (HPC):
HPC for scientific processing (GPU hardware, MPI, LAMMPS, Torque, Maui)
Pacemaker & Corosync
Red Hat Global File System 2 (GFS2)
Red Hat Gluster Storage
MySQL, PostgreSQL and MongoDB HA and sharding
play_arrowServer and network infrastructure:
Planning, analysis, deployment and monitoring of datacenter infrastructures
Systems management tools (Red Hat Satellite)
Monitoring tools (Nagios, Cacti)
Experience with major hardware vendors (HP, Dell, Cisco and IBM)
play_arrowCapacity planning:
Proactive sizing and monitoring of servers, network services, storage and data links capacities, considering the expected growth of the company
For companies already facing bottlenecks, resizing of the existing infrastructure with zero or minimal, planned downtime
play_arrowBackup and Disaster Recovery:
Development and deployment of backup and DR strategies, ensuring business continuity
play_arrowSolutions for automation and monitoring of software development steps, reducing the amount of time and effort to place new builds into production:
Containers (Docker)
Containers orchestration (Kubernetes, Red Hat OpenShift)
Automation engines (Ansible, Chef, Puppet)
Automation servers (Jenkins)
Monitoring (Nagios)
play_arrowFor companies which can't afford a dedicated IT security team, or need a liaison between the security and systems engineering teams, the following services are offered:
Hardening of Linux operating systems, including the development and enforcement of a common security baseline
Development and deployment of Linux-based security solutions, such as firewalls, IDS/IPS, anti-spam and content filtering
Penetration tests (pen-tests) using several techniques, to ensure systems security
Auditing of operating systems and softwares in order to identify potential security issues from unhardened systems, bad user practices and weak secure programming techniques
Development and enforcement of global security policies
Work with me
Interested in hiring my services? Want to know more about my experience, qualifications and recommendations? Just send me an e-mail, or connect with me on LinkedIn! Hiring a consultant or freelancer is the smartest choice for many situations:
Faster and cheaper than hiring new employees or consulting enterprises
Quickly adjust to current staffing and business needs
Get expert advice on critical project phases
Solve one-time demands in a more efficient and simpler way
Since the job usually requires access to critical systems, including superuser level, I can sign non-disclosure agreements (NDAs) and provide all the documentation your company needs beforehand.
