CV - José Manuel Barrio Linares

Core Contributor & Maintainer (Open Source)

• Core contributor and maintainer of the C3 compiler toolchain (c3c), authoring the alternative C code generation backend and cross-compilation SDK fetchers.
• Authored standard library modules: Deflate/ZIP compression, streaming XML 1.0 parser, JSON reflection unmarshaler, and regular expressions.
• Contributed platform extensions and stability improvements to std::gfx, including Wayland wlr-layer-shell protocol support and event loop integration.
• Developed the compiler documentation generator (docgen) and the web playground (play.c3-lang.org).

Linux Systems Administrator & DevOps Consultant

• Linux systems administration, kernel tuning, and security hardening across Debian, Ubuntu, Arch, RockyLinux, CentOS, RedHat, and SUSE.
• Infrastructure automation and orchestration with Bash, Python, Docker, Kubernetes, Ansible, and Terraform.
• Telemetry and monitoring architecture using Zabbix, Prometheus, Grafana, Netdata, and Cacti.
• SQL database administration, performance optimization, and backup auditing.
• AI workflow integration, local model runtime deployments, and InfoSEC advisory.

Linux Sysadmin and MySQL Databases.
Managed backups, service optimization and audits.
In charge of maintaining a platform for SMS and AdSense.
Developed Web APIs, with an average of 6000 hits/sec per service, php and python.
Metal and virtual Amazon AWS instances. (Linux/CentOS, scripting: bash, python, perl)
Zabbix (and Nagios) monitoring server
Kannel SMS platform for receiving, processing and sending messages
HAProxy, Squid, Varnish, Memcache, Redis, MongoDB, Nginx, MariaDB, PHP, Python, Perl

Web development, layout and maintenance for the IBM PartnerWorld platform.

Development of JavaScript components for functionality and compatibility improvements.
Development of web-based management systems.
SEO development for web positioning.
Quality and user experience improvements.

ABAP programmer
ABAP Programmer and Analyst. SAP system.

Freelance programmer. Development of websites and applications.
Hosting, Email, DNS administrator. Linux and Windows Servers

ABAP Consultant Programmer
As an analyst, I had programmer responsibilities as well as managing interoperability between clients and programmers.

I’ve also learned by taking internal courses as a Project Manager among others, and being responsible for training by managing courses in various areas for employees and clients of the company. This has given me good experience in Project Leading and resource management.

Consultant dedicated to the implementation of different SAP modules, such as SD, FI, CO, MM, BW and Netweaver.

Projects: Quilmes, Alto Paraná, Editorial Médica Panamericana, Sandoz, Telefónica, OCASA Logística, Mercado Libre, APTAR, Beiersdorf, Syngenta.

SQL Programmer, VB .Net

Project Manager Assistant and Accountant. Performing various project management and coordination tasks with the team of programmers in Microsoft technologies (Alto Paraná Project).

Systems Administrator (Windows Server, Red Hat Linux)

Technical Support, maintenance of the company computer systems. Mail Exchange Server, IIS 6 Webserver and Apache. File Server Services/Permissions, Hardware and Software, repair and installation. Centralized Firewall, Antivirus and Antispam. SAP Servers and Oracle Databases.