End-to-End Test and Integration Engineer for IoT Mobile Core (4G/5G Data, IMS, SMS)

Publication date : Mar 10, 2026, 12:00AM

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About us

Join us at Orange Business!
We are a network and digital integrator that understands the entire value chain of the digital world, freeing our customers to focus on the strategic initiatives that shape their business.
Every day, you will collaborate with a team dedicated to providing consistent, sustainable global solutions, no matter where our customers operate. With over 30,000 employees across Asia, the Americas, Africa, and Europe, we offer a dynamic environment to develop and perfect your skills in a field filled with exciting challenges and opportunities.

About the role

Context
As part of IoT project, aiming at building and operating a dedicated Mobile core for IoT, we are looking for “End-to-End Testers and Integrators” to ensure the E2E integration and service validation of this IoT platform and to ensure some L2/L3 support on E2E services. This platform provides data, voice, and SMS services for IoT and is composed of a 4G/5G mobile core, an IMS voice core, an SMS platform, all deployed within a Kubernetes environment.

Main Responsibilities

• Set-up the required testing environment to be capable to test remotely an IoT platform located in French labs
• Testing and validation of IoT services expected by marketing from and end-to-end perspective
• Define and perform E2E integration tests and service validation tests, after upgrade of platform components (4G/5G mobile core, IMS voice core, SMSC) in coordination with relevant TMC teams.
• Investigation of complex issues related to mobile data/voice cores and SMS, through functional and protocol testing, analyzing of traces and performance indicators, and proposing solutions in collaboration with expert teams for each individual components.
• Support for automating recurring tests using DevOps tools.
• Configuration, and optimization of observability tools (monitoring, logging, alerting) and participation in their integration with operational/supervision tooling.
• Monitoring the performance and stability of various IoT platform instances (qualification/pre-production/production).

About you

Required Skills

• In-depth knowledge of 4G/5G mobile networks and IMS.
• Experience in integrating telco mobile solutions (voice/data/SMS) component by component (horizontal integration).
• Knowledge of Kubernetes and native cloud environments.
• Experience in integrating mobile telco solutions in virtualized or containerized environments (vertical integration).
• Strong analytical and problem-solving skills for complex issues.
• Experience with observability tools (Prometheus, Grafana, ELK, etc.).
• DevOps skills: CI/CD, deployment automation, configuration management.
• Scripting and development skills for automating tests.
• Knowledge of security and incident management.

Profile

• Engineering degree or equivalent in telecommunications, computer science, or related fields.
• Significant experience in integrating and testing mobile data and voice solutions for 4G/5G.
• Knowledge of Kubernetes, Docker, and DevOps practices.
• Ability to work in a team, communicate effectively, and document processes.

You bring rigor, passion for challenges, and determination. You seek the opportunity to expand your expertise, achieve your goals, and thrive.

What we offer

• Global Opportunities: Work in multi-national teams with opportunity to collaborate with colleagues and customers from all over the world.
• Flexible Work Environment: Flexible working hours and possibility to combine work from office and home (hybrid ways of working).
• Professional Development: training programs and upskilling/re-skilling opportunities.
• Career Growth: Internal growth and mobility opportunities within Orange.
• Caring and Daring Culture: Health and well-being programs and benefits, diversity & inclusion initiatives, CSR and employee connect events.
• Reward Programs: Employee Referral Program, Change Maker Awards.

Only your skills matterRegardless of your age, gender identity, race, ethnic origin, religion/belief, sexual orientation, marital status, neurotype, disability, veteran status or appearance, we encourage diversity within our teams because it is a strength for the collective and a vector of innovation. Orange Group is a disabled-friendly company and equal opportunity employer: don't hesitate to tell us about your specific needs.

At Orange, only your skills matter.

Regardless of your age, gender, background, origin, religion, sexual orientation, disability, neurodiversity, or appearance, we actively encourage diversity within our teams, as it is a collective strength and a driver of innovation.Orange is a disability-inclusive employer: please feel free to let us know about any specific needs you may have.