Mobile Telecom Support Engineer

oxio; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

OXIO is seeking a seasoned Mobile Telecom Support Engineer to strengthen its telecom team. This hands-on role focuses on monitoring, troubleshooting, and escalating real-time core network issues, collaborating with the core engineering team and Level 1/2 support groups to keep services running smoothly.

You will maintain and improve the network, develop dashboards, and provide NOC support, fault investigation, and troubleshooting.

Qualifications

• 10+ years in a telecom environment with L3 support or similar roles.
• Signalling analysis across 2G/3G/4G/VoLTE networks.
• Strong knowledge of OSI, TCP/IP (IPv4/IPv6).
• Experience analyzing signalling traces with Wireshark.
• SS7 signalling troubleshooting experience.
• Proficiency with Grafana, Prometheus, ElasticSearch.
• Basic Python and Linux/Bash scripting.
• Willingness to work on a 24/7 on-call roster.
• Excellent written and spoken English.

Responsibilities

• Monitor, troubleshoot, and escalate real-time core network or infrastructure issues.
• Collaborate with global operators and internal teams to perform live tests and root-cause analysis.
• Create on-demand dashboards to track metrics and validate service restoration.
• Provide technical support to NOC engineers and telecom escalation groups.
• Represent the telecom team in interactions with MNOs.

Skills

Mobile networks

Call trace analysis

OSI model

TCP/IP networking

SS7 signaling

Python/Linux Bash

On-call readiness

English communication

Tools

Grafana

Prometheus

ElasticSearch

Wireshark

Job description

Mobile Telecom Support Engineer

We’re looking for a Mobile Support engineer to help grow our telecom team. This role will be hands on and you will work with our telecom team, core engineering team, and Level 1/2 customer support escalation groups, in order to monitor, troubleshoot, and properly escalat? real-time core network or infrastructure issues that could affect customers.

Your role will be part of the telecom team within a dynamic and busy telecom company and will work alongside individuals who are highly experienced and experts in their field. This is a great opportunity for someone who wants to learn all about mobile telecom networks.

You will maintain and improve the OXIO’s network and provide technical support, fault investigation and troubleshooting of all issues on the network. You will keep the performance of our telecom network at optimum levels by ensuring that network/application problems are detected and corrected according to agreed KPI and SLA.

Key responsibilities :

Technical

• Good understanding of Mobile Networks 2G/3G/4G/5G

• Troubleshooting complex issues by analyzing end to end call traces in several protocols and interfaces (MAP, TCAP, RANAP, DIAMETER, SIP, GTP, GTPv2, S1AP, SGsAP,IuCS, IuPS, Gr, Gn/Gp, S6a, S11, S5/S8, Gm, Rx, Cx etc.)

• Troubleshooting International Roaming issues (voice and data) reported by outbound subscribers.

• Working together with worldwide mobile operator engineers to make live tests and perform analysis to find the root cause

• Creating on-demand dashboards to monitor specific metrics or to validate restoring of services after failures

• Technical support to NOC engineers to analyze and solve issues.

• Liase with MNOs to represent the telecom team on the country.

Management

• Responsive to L3 telecom incidents, NOC hotline calls and emails

• Performs L3-level troubleshooting and resolves or escalates on telecom matters.

• Development of KPIs and other metrics to monitor key aspects in mobile network performance

• Development of training material related to signalling / troubleshooting / best practices

• Report and coordinate faults rectification with other operators and service providers

• Ability to troubleshoot, document, and assess proper escalation channel and team or group.

Key qualifications :

• 10+ years experience working in a telecom environment doing L3 support or similar roles

• Protocol signalling analysis and troubleshooting in different protocols and interfaces of 2G/3G/4G/VoLTE networks

• Solid understanding of OSI model and TCP/IP networking, both IPv4 and IPv6.

• Analysis of signalling traces using Wireshark

• SS7 signalling network troubleshooting

• Proficiency with Grafana, Prometheus, ElasticSearch

• Basic Python / Linux / Bash knowledge

• Ability to work on a 24/7 on-call rotating roster

• Excellent written and verbal communication skills

• Excellent interpersonal skills

• Proficient English written and spoken

OXIO is committed to fostering a diverse, equitable, and inclusive workplace where all employees feel valued and empowered. We believe that diversity in all its forms drives innovation and creativity, and we strive to create an environment that reflects and celebrates the unique backgrounds, perspectives, and talents of our employees. We do not discriminate against any employee or applicant for employment based on race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age, disability, genetic information, veteran status, or any other characteristic protected by applicable federal, state, or local law. We are dedicated to providing a work environment free from discrimination and harassment. We committed to ensuring that all qualified applicants have an equal opportunity to apply for job openings. If you need assistance or an accommodation due to a disability, please contact us at [e-mail] for more information.