Marcelo Félix

Voice Eng @telnyx

Contact

LinkedIn:marcelofelix

GitHub:marcelofpfelix

Website:marcelofelix.com

Info

Working remote at Europe

Portuguese

Proficient in English

SW Eng (Backend | VoIP)

DevOps (SRE | Cloud)

You can always find this CV updated at https://marcelofelix.com/profile.

Profile

Telco and CS Engineer working in VoIP Operations, with a background in Software Programming and Networking. Broad knowledge, from Real-Time Protocols to Infra, with troubleshooting experience. Eager to learn more about SRE, Linux, Networking, VoIP, DevOps, Coding, Monitoring, Cloud Computing, Automation, Microservices and Containers. Enthusiastic about open source, writing and experimenting in a Homelab.

Professional Experience12y 7m

Telnyx

Voice Engineer

Remote, May 2021 - Present, 5y 3m

DevOps Engineeer, specialised in RTC communications (SIP proxies), using kamailio and developing in python, go.

Talkdesk

VoIP Network Engineer

Remote, Nov 2018 - Mai 2021, 2y 6m

Professional Services and Support Eng Voice specialist responsible to diagnose and solve complex Call Quality issues in CCaaS and SIP trunk setups between multiple SBC/PBX and a CPaaS, with E2E troubleshooting and Service Delivery.

Celfocus

VoIP Service Operations

Lisboa, 2014 - Nov 2018, 4y 10m

Capgemini and CELFocus project in the Unified Communications team, with Vodafone One Net and GCC service. SRE-style operations for Red Hat Linux, SIP Trunks, PBX, Weblogic, ActiveMQ JMS Broker and NOKIA mCAS. Development of tools and scripting with bash and python for monitoring and automation. Tier 2 support, fault/change management, release acceptance, on-call, networking troubleshooting, REST/SOAP Web Services, VoIP and SIP flows in the IMS Network.

Skills

Software Eng programming in Python, Go, Bash, git.
Linux (RedHat/Debian), Docker containers and Kubernetes Administration.
Automation and CI/CD with Ansible, Packer, Vagrant and Jenkins.
Monitoring with ElasticSearch, Prometheus and Grafana.
Understanding of Networking (TCP/IP), routing and switching.
Experience in RTC SIP/RTP Protocols, IMS Network, WebRTC, SIP Servers/Proxies (Kamailio).
Interaction with PostgresDB, InfluxDB and OracleDB.
Homelab with Proxmox VE virtualization.

Education

Técnico - Universidade de Lisboa

Master in Computers Science & Electrical Engineering

Lisboa

Specialisation in Telecommunications and Computer Science Knowledge of Fundamentals of Communications, Propagation and Radiation, and Telecommunication Networks and Systems. Development of programming skills in C, JAVA and MATLAB. SQL, DB modeling and Entity relationship diagrams. Additional basic knowledge of Mathematica, HTML5, Javascript and PHP.

Certifications

WebLogic Server 12c Administrator

Oracle

Organizations

Best

Sprint course

Lyon, May 2013

Course about telecommunications, with students around Europe.

SystemsGroup

Finance Board

Lisboa, 2010 - 2011

Youth Association with IT services and aim to support entrepreneurship and the creation of junior companies.

República "A Desordem dos Engenheiros"

Secretary / President

Lisboa, 2008 - 2013

A fraternity house connected to Instituto Superior Técnico. I was involved with financial, human and material resources, diplomatic relationships with other fraternities and institutions, and organized events.

Volunteering

Colégio Maria Auxiliadora

Volunteer lead

Namaacha, Aug 2014

The leader in a short-term GASTagus project: management of a five-volunteer team, supervisor of project design and implementation, and cooperation with local NGOs.

ACRIDES

Volunteer / Volunteer lead

Praia, Aug 2012 / Aug 2013

Volunteer in the GASTagus project in the outskirts of Praia: cooperation with a local NGDO, ACRIDES, giving training to children, teenagers and adults in education for development, and leader in the next year.

Leigos para o Desenvolvimento

Volunteer

Lisboa, 2012

Supporting immigrant children in school underachievement and integration at Centro S. Pedro Claver.

GASTagus

Volunteer / Collaborator / Collaborator lead

Lisboa, 2011 - 2014

NGDO where I received 120 hours of training in education for development and fundraising. Collaborator responsible for volunteer recruitment and training, plus financial and logistic coordination for short-term international youth volunteer projects.