Fredy Barrios
Development
Bogota DC, Colombia
Skills
Cloud Computing
About
Fredy Dario Barrios Fuentes's skills align with Consultants and Specialists (Information and Communication Technology). Fredy also has skills associated with Network Specialists (Information and Communication Technology). Fredy Dario Barrios Fuentes has 17 years of work experience, with 12 years of management experience, including a mid-level position.
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Work Experience
Consulting Delivery Engineer
October 2020 - February 2022
- Assist PMO and project management plan, following standard and agile methodolies. Interacton with foreign English teams to plan, coordinate and difined expected required solution Support the solution networking design layer 2 and layer 3 Handle tickets and solve incidents scaled by the customer Troubleshooting SIP protocol checking the traces, DNS and DHCP issues DNS check and lookups verifications with wiresharkt traces to resolve problems in the Genesys platform implementation FW and traffic verification to achive the integration of the platform, checking source - destination traffic (IP - Port) AWS platform checks in the instances, Network Load Balancers, VPC-VPN and S3. Autoscaling EC2 metrics verifications, S3 and VPC configuration. Terraform verification, building CI/CD leading QA team.
VoLTE Integrartion Engineer
Nokia Colombia
May 2019 - May 2020
- Management and support for delivery activities and implementation of VoLTE sites in an agile way. Routing verification with the different VLANs cheking the connectivity for each service User plan, management plane and control plane. Supporting OSS Management system problems, being the communication channel towards care area so that there is functionality between applications and OSS Virtual machines integration processes. Integration SRAN activities, attache DNS, checking BTSMED connectivity, SW upgrade, iOMS deletation. SQL queries. AWS S3 pulling data to build reports
RAN Engineer
CPIM NOKIA Argentina
January 2018 - December 2018
- RNC Multicontroller commissioning and integration (All interfaces), routing verification with static and OSPF routing protocols Troubleshooting emergency cases handling the incidents scale by the customer NOKIA Case Took solving problems (NCT Resolve) HP IP routing implementation with Nokia applications, image NE virtualization Megamon and Emil integration with the IP - MPLS Network configurating the switches HP and checking the connectivity to the Cisco equipment Radio access NE verification after SW upgrades issues with problem in normal operations. Lead test programm for 3G Network:system and UE Measurements, Physical and Logical Channel Structures, Intra- system & Inter-system handover, Radio Resource Management behavior. BSC interface Abis, Gb, integration. BSC interface cutovers. Test cases tracing fishing macro, Nethawk M5 analyzing IP traffic for the different interfases and services Trouble shooting faults by applying standard resolving processes
access -NSS Packet and circuit NOC Engineer
BSS Radio
July 2007 - December 2011
- Supervising the networks elements over SS7 and SIGTRAN stack protocols, RANAP, BSSAP, MAP, BICC, SIP, MGCP, SIP (for Huawei, Ericsson, NSN and Cisco equipment) Work on ticket reports when there are fail events for BTS, Nobe B, BSC, RNC, MSC, MSS, MGW, SGSN, GGSN or HLR. Follow the process to solve the fails, escalate and troubleshoot the problem in time: Cell unavailable, BSC handover congestion, attach congestion, LAPD down, transmission problems, PCU locked, e.t.c. Signaling link down, location update unsuccessful, Send information Deny, DPC unavailable, M3UA association down, MTP3 route unavailable, e.t.c. Troubleshooting signaling and protocol problems that affect the BSS and NSS network, taken traces in the user attach and location update by Traffica or LMT (Huawei in RNC or SGSN GGSN - analyzing mobile management (MM) and mobile session (SM) for PS core, analyzing ISUP, MAP and BICC for CS in MSX for Huawei) in addition new configurations in MSS Ericsson. M2000, N2000 Management system administrator Singalling and hardware reset for DPC and SS7 route problems. Configuring in Huawei and Ericsson equipments: Emergency numbers, MSS, MSX. Configuration of new Node B and BTS in the MSS or MSX Links and signaling links configuration.
Engineer (Remote Engineer for Banco Occidente client)
NOC
January 2007 - July 2007
- Giving support to Banco Occidente customer, solving problems in the data network over MPLS structure, handling CISCO equipments, trouble shooting in routing (OSPF, BGP). Test connectivity and qualify of service for client's the remote offices WAN, configuring QoS service, access list, NAT, and other routing protocols like RIP. Handling CISCO routers and Switches equipments. DNS checks and lookups to reachs the URLs and destination.
Resident Engineer ETB
SERDAN
September 2006 - January 2007
- DIAN Implementation configuration of the network DIAN for interconnection of the WAN offices. Give support to DIAN network in regard to the services of ETB to DIAN. Make management and supervision of the CISCO data network CISCO (ciscoworks, router and switches). Analyst of traffic and interoperability of the local networks (LAN). Support of VRF - MPLS client DIAN, last mile connections, over frame relay and metro Ethernet. CISCO equipment configuration according to the needs of the customer. Be involved in the execution team I achieve understand the important and crucial is execution stage in the project to reach the goals in the agreement. I learned during this stage how the program has to be accomplished in each of its fases, managing the resources productively and analysing risks facing them effectively. I started gain skills related customer communication giving reports agreed and technical support about the implementation.
NOKIA RAN Engineer - Nokia LAB Lead Engineer
CPIM NOKIA Argentina
March 2012 - Present
- to October
Latam Operation Manager
February 2022 - Present
- - September 30 2022 Be involved in the operation implementation projects assisting the delivery task through requesting needs to providers. Assist for the resolution problems communicating to the interconnection providers the issues that affect the operation. Follow up meetings with interconnection provider and internal projects. SQL queries to look for the information and problem resolution AWS VPN checks and verification to scale with the provider. AWS change IP security groups, Terraform EC2s - IAM policies scripting. Grafana monitoring of database resources.
IMS Cloud Solution Architect
Ericsson Colombia
May 2023 - Present
- Support cloud NFVI solutions for IMS services, participating in emergency cases and checks LLD and give the E2E end to end perspective. Diverse multiteams work, contribution and cooperation to discuss cloud solutions. Supporting Ericsson EIA implementation over Kubernetes and kubespray solution. Jenkins automation for collection and AI analysis. Contribute to specific cloud solutions to fill the requiments and interconnect the VNF services to the Ericsson cloud native infrastructure.
Education
Nokia link Academy
LSI school
certification
