---
title: 'IMS Core Engineer at OXIO Corporation'
canonical: 'https://feeny.ai/job/ims-core-engineer-oxio-corporation-remote-hzm087yhrpsw'
type: 'job'
last_seen: '2026-09-14'
---

# IMS Core Engineer at OXIO Corporation

- **Company:** OXIO Corporation
- **Location:** Remote
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-06-23
- **Last confirmed live:** 2026-09-14
- **Apply:** https://jobs.ashbyhq.com/oxio/83962376-f876-4bab-bb5f-69a23ecda7f8

## Job description

IMS Core Engineer / Architect

The IMS/VoLTE Integration Engineer will analyze, prepare, implement and verify the configuration and integration of a node, network and/or system. Your scope of work could include the scenarios of introduction, upgrade expansion, functionality and capacity. Your work will in part form our customer legacy.

Key responsibilities : As part of the mobile core team, you will take care of our IMS mobile platform; you will have the following responsibilities:

- Manage networks and nodes within the IMS domain for our 2.5G, 3G & 4G networks (SIP, H323, IMS/IMT, VoLTE, VoWiFi)
- Using dashboards (and building new ones) to clearly and quickly discover issues and patterns
- Accountable and responsible to follow the communications procedures in place when handling an incident. Communication is both internal within our company and external to our third-party providers.
- Maintenance, troubleshooting, security audits, and emergency response
- Undertake fault handling and corrective actions on node, service and infrastructure level
- Handle project activities, implementing / adapting (new) IMS E2E service functionalities, nodes, services
- When needed, cover the 7x24 monitoring shift responsibilities (On call support, Baby Sitting activities etc.)
- Wireshark tracing of critical infrastructure to debug issues
- Provide input, implement and verify improvements in processes and work instructions ·
- Verify and implement configuration changes
- Work to identify and drive improvement

## Key Qualifications

At least 10 years’ experience in the core network domain with a mobile networks

- Holding a BSc degree in Telecommunication or Computer Science (post-graduate studies are a bonus) and 10+ years core telecommunications network experience.
- Working knowledge of telecom networks like 2G, 2.5G, 3G and LTE (MME, SGW, PGW, and MME).
- Great Conceptual understanding of IMS evolution and trends - IMS Subsystems, functionalities and IMS services call flows.
- Great knowledge of IMS network topology (their various interfaces), Core IMS Parameters and Features.
- Worked on different type of Core Nodes, CSFB, IMS (P-CSCF, I-CSCF, S-CSCF, MTAS, HSS, CUDB, MGCF, etc.).
- Experience with SS7, ISUP, BICC, SIP, H248, Diameter signaling & protocols configuration change IMS based services is necessary.
- Operation and maintenance of IMS platforms for Alarms, faults/abnormal conditions handling, Analysis of traces, High troubleshooting skills, system backup/restore from backup files, Fault Diagnostics, Preventive Maintenance & upgrades of IMS nodes.
- Configuration preparation & implementation for configuration changes requests for IMS nodes and Integration for all nodes (S-CSCF, I-CSCF, MTAS, HSS, CUDB, etc.) as well.
- Hands on with sniffers, Wireshark and testing tools in advanced mode.
- Hands on with Linux/Unix based systems (you can find your way around a linux shell).
- Understanding of 3GPP, ITU-T and ANSI standards.
- Understanding of roaming agreements and IR.21, including IREG testing.
- VoLTE Troubleshooting and call trace analysis.
- Strong writing and documentation skills are needed to develop reports.
- Adaptability and responding to change.
- Be able to work under pressure.
- You are fluent in English (written and spoken).
- Ready to work on morning/afternoon shifts.
- Good interaction with external customers and internal teams.

## Nice to have

- 2+ years scripting experience (Python, Bash, etc.)

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 hr@oxio.io for more information.

## About OXIO Corporation

## Company Overview
- **One-liner**: OXIO is the world’s first Telecom-as-a-Service (TaaS) platform, enabling companies to build, manage and customize programmable, cloud-native connectivity for MVNOs, mobile operators and enterprises.
- **Entity Type**: Private (funding stage not publicly disclosed)
- **Headquarters**: New York, New York, USA (with additional offices in Mexico City and Montreal)
- **Founded**: 2018
- **Founders**: Nicolas Girard

## Core Business
- **Primary industry/industries**: Telecommunications / Telecom-as-a-Service (TaaS) / Cloud Communications
- **Target customers**: B2B – MVNOs, mobile network operators, enterprises (including M2M/IoT companies, fintech, and regulated industries)
- **Mission or purpose**: “Reimagine telecom for a limitless, connected tomorrow” – building a global, intelligent, secure and reliable connectivity platform that abstracts legacy complexity and unlocks new business models.

## Products & Services
- **BrandVNO® (MVNO Platform)**: A no-code, Telecom-as-a-Service platform that allows companies to launch, manage and scale their own mobile network (MVNO) without carrier contracts or telecom expertise. Includes eSIM activation, plan management, and customer controls. [oxio.com](https://oxio.com/)
- **OXIO APIs**: Modular, interoperable APIs for programmatic management of telecom operations – provisioning, billing, network control, and real-time analytics. [oxio.com](https://oxio.com/)
- **AI-Powered Business Intelligence**: Actionable dashboards and AI-driven insights on subscriber behavior, retention, fraud detection, and marketing optimization. [oxio.com](https://oxio.com/)
- **Global M2M Connectivity**: Universal SIM and multi-network connectivity for machine-to-machine deployments (IoT), with built-in fraud prevention and large-scale device management. [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)
- **eSIM Authentication**: Network-level, cryptographically secure identity verification as a replacement for legacy 2FA/OTP. [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)
- **Managed Compliance & Security**: Pre-built regulatory frameworks (e.g., for financial communications) and FCC-approved wholesale network. [oxio.com](https://oxio.com/)

## Market Standing
- **Valuation/Market Cap**: Not publicly available
- **Key Metric**: Surpassed **2 million activated lines** on the OXIO network (as of end of 2025) [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)
- **Notable Investors/Partners**: AWS (strategic partnership), Mavenir (VoLTE certification and technology partnership), FCC (license holder – first cloud-native, multi-carrier wholesale network approved by the regulator) [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)
- **Growth Signals**: 
  - Named #48 on Forbes Top Startup Employers of 2023 [oxio.com/join-the-team/](https://oxio.com/join-the-team/)
  - Frost & Sullivan Global TaaS Transformational Innovation Leadership Award (2025) [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)
  - Winner of Cloud Innovation category at Global Connectivity Awards 2025 [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)
  - Named to The Fast Mode 100 – Top Solution Providers of 2025 [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)
  - 20% growth in M2M activations in H2 2025 [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)
  - New senior leadership hires from Verizon, AT&T, and other telecom powerhouses [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)

## Competitive Advantages
- **First-of-its-kind TaaS platform**: Cloud-native, programmable core that replaces legacy MVNE infrastructure with a modern API-first approach – enabling use cases that were previously impossible (borderless MVNOs, network-level compliance for regulated industries).
- **Multi-network abstraction**: A single integration gives global roaming on multiple carriers without managing separate contracts, SIM SKUs, or local compliance.
- **FCC license as a cloud-native wholesale network**: Trusted regulatory approval that reduces time-to-market for customers.
- **AI built into the network**: Business intelligence and fraud detection at the network layer, not bolted on.
- **No vendor lock-in**: Fully interoperable APIs; customers can blend plans across networks and borders.

## Strategic Focus
- **Global expansion**: Deepening presence in the US and entering new international markets; supporting borderless MVNOs and M2M deployments.
- **Platform innovation**: Expanding BrandVNO capabilities (including full turnkey managed MVNO service) and investing in AI-driven network operations.
- **New use cases**: Regulated financial communications (compliance at network layer), modern identity verification via eSIM, and enterprise fraud prevention for M2M ecosystems. [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)

## Why Work Here
- **Culture**: Emphasis on openness, diversity, and innovation – “no idea is too big or too small.” Employees are encouraged to ask questions and challenge norms. [oxio.com/join-the-team/](https://oxio.com/join-the-team/)
- **Remote/Hybrid/Office**: Offices in New York, Mexico City, and Montreal; the culture includes in-person team events and company off-sites, suggesting a hybrid or office-centric model (check job postings for specific roles).
- **Perks**: Stock options, comprehensive benefits, employee referral program, retirement/pension plans, office lunches and snacks, and company-paid holidays. [oxio.com/join-the-team/](https://oxio.com/join-the-team/)
- **Career impact**: Described as a “career-defining opportunity” – employees work on cutting-edge telecom infrastructure that is disrupting a legacy industry. Named a Forbes Top Startup Employer.
- **Engineering focus**: Active job postings for Backend Engineers, Staff Data Platform Engineer, Site Reliability Engineer, and QA Tester – indicating a strong engineering-driven culture with modern stack (cloud-native, APIs, AI). [linkedin.com/company/oxiocorp](https://www.linkedin.com/company/oxiocorp)

## Sources
1. [oxio.com/company](https://oxio.com/company/)
2. [oxio.com](https://oxio.com/)
3. [oxio.com/join-the-team](https://oxio.com/join-the-team/)
4. [linkedin.com/company/oxiocorp](https://www.linkedin.com/company/oxiocorp)
5. [oxio.com/company/press-room/](https://oxio.com/company/press-room/oxio-sets-the-foundation-for-global-growth-as-taas-adoption-accelerates/)

## Other roles at OXIO Corporation

- [Site Reliability Engineer](https://feeny.ai/job/site-reliability-engineer-oxio-corporation-remote-8g3r3m2mk6sa)
- [Director, Customer Service Operations](https://feeny.ai/job/director-customer-service-operations-oxio-corporation-united-states-ztn0y52jcehd) — United States
- [Office Manager, Mexico City](https://feeny.ai/job/office-manager-mexico-city-oxio-corporation-mexico-city-6bqansf63jpt) — Mexico City, Mexico
- [Technical Lead / Exec IT Support](https://feeny.ai/job/technical-lead-exec-it-support-oxio-corporation-new-york-wmmbjbmtza98) — New York, NY
- [HLR / HSS / UDM Architect](https://feeny.ai/job/hlr-hss-udm-architect-oxio-corporation-remote-dyx12w5bhtt0)
- [Senior Mobile Core Architect](https://feeny.ai/job/senior-mobile-core-architect-oxio-corporation-remote-38cqc7zq2c0d)
- [Mobile Telecom Support Engineer](https://feeny.ai/job/mobile-telecom-support-engineer-oxio-corporation-remote-xtqzm9rncbdj)
- [Staff Data Engineer](https://feeny.ai/job/staff-data-engineer-oxio-corporation-remote-shmnm2qbx286)
- [Product Manager](https://feeny.ai/job/product-manager-oxio-corporation-remote-fw1aecye560d)
- [Solutions Architect](https://feeny.ai/job/solutions-architect-oxio-corporation-remote-7avqw3e6j5c6)