Joshua Grijalva

Telecommunications and fiber optic engineer with 10+ years of experience in FTTH/GPON networks, OSP engineering, fiber deployment, and mobile network infrastructure (2G/3G/4G). Strong expertise in fiber splicing, OTDR testing, RF systems, and large-scale telecom operations. Proven ability to lead field teams, execute high-volume deployments, and improve network reliability, uptime, and operational performance across national-scale telecom environments.

Experienced OSP Design Engineer with a strong background in route planning, GIS mapping, and large-scale FTTH deployments.

Fiber Splicer at Optimum Inc. (contractor for Spectrum) (2025-04 – 2026-06)

• Executed FTTH deployments installing 10+ fiber enclosures weekly across aerial and underground networks.
• Spliced and certified up to 180 fibers per project with 0.01 dB loss or less meeting Spectrum standards.
• Conducted detailed analysis and maintained comprehensive fiber optic network documentation using GIS and ArcGIS tools to support FTTH deployments.
• Experience with Inside Plant (ISP) fiber network operations, including installation, testing, and maintenance, enhancing accuracy and efficiency in network management.
• Performed OTDR testing, DWDM/CWDM validation, troubleshooting, and OSP maintenance.
• Restored critical services during outages via emergency splicing and fault isolation.
• Reduced MTTR by 25% and maintained 99.5%+ network availability.

Telecommunications Engineer – CCTV & Networking at Data Link Services (2023-02 – 2025-02)

• Configured Cisco, Aruba, and Ciena routing, switching, and IP infrastructure.
• Conducted site surveys, RF/fiber feasibility studies, and 5G deployment planning.
• Performed fiber network documentation, data analysis, and GIS mapping using ArcGIS to support network design and deployment projects.
• Developed network designs, azimuth calculations, and engineering documentation.
• Installed CCTV, structured cabling, and IP networking systems (32+ cameras and 4+ DVRs per week).

OSP Design & Technical Coordinator at Telconet Latam (2022-01 – 2023-01)

• Led 30 technicians in FTTH deployment, maintenance, and service restoration.
• Managed fiber network documentation, conducted data analysis, and utilized GIS and ArcGIS tools to support FTTH deployment and maintenance projects.
• Managed Inside Plant (ISP) fiber network installations and maintenance, ensuring reliable service delivery and network performance.
• Delivered 20+ km fiber, 200 poles, 20 nodes, and 300+ last-mile activations.
• Resolved 50+ network outages with NOC/IP teams improving continuity.
• Performed 80+ preventive fiber inspections improving OTN performance.

Senior Network Specialist at National Assembly (2020-07 – 2021-05)

• Managed enterprise network infrastructure across 15 facilities and 200+ access points.
• Performed 30+ preventive maintenance cycles improving availability.
• Resolved 50+ network incidents (routing, connectivity, performance).
• Supported Cisco infrastructure and fiber projects.

Chief Technical / Operations Manager at CNT EP (2018-03 – 2020-06)

• Supervised 50 personnel across access, O&M, and OSP engineering teams, ensuring 100% compliance with ISO 14001 / ISO 45001 safety and environmental standards.
• Managed fiber, copper, and transmission network operations.
• Improved KPIs: ADSL delay from 25.8% to 2.7%, broadband outages from 8.5 to 5.6, GPON compliance to 96.5%.
• Led outage response, maintenance, and field logistics operations.

OSP Design & Access Network Engineer at CNT EP (2015-10 – 2018-02)

• Designed and engineered FTTH/GPON network layouts for 6,000+ homes passed, including feeder and distribution route planning.
• Performed field surveys and feasibility studies to determine optimal aerial/underground fiber paths, pole loading, and conduit capacity.
• Created detailed engineering packages including route maps, splice matrices, and bill of materials (BOM) using AutoCAD and GIS/ArcGIS.
• Developed "as-built" documentation and updated network records post-construction to ensure accurate OSP inventory.
• Coordinated with municipal permitting agencies and right-of-way (ROW) authorities to secure construction approvals.
• Supervised contractor crews to ensure construction adhered to approved design specifications and safety standards (ISO).

Telecommunications Project Supervisor at OTECEL (Movistar) (2012-09 – 2015-09)

• Led deployment of 200+ RBS sites (2G/3G/4G networks).
• Performed RF testing (BER, interference, handover, throughput, calls).
• Managed DC power systems (rectifiers, batteries, inverters) and backhaul.
• Coordinated fiber and microwave transport networks.
• Ensured ISO 14001 / ISO 45001 compliance.

Master's Degree in Telecommunications Engineering – Catholic University of Santiago de Guayaquil

Bachelor's Degree in Telecommunications Engineering – Catholic University of Santiago de Guayaquil