> Markdown version of [/jobs/ext/3492714-5g-ntn-test-engineer-junior](https://www.wearedevelopers.com/jobs/ext/3492714-5g-ntn-test-engineer-junior). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # 5G NTN Test Engineer (Junior) - **Company:** Sateliot - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** LTE (Telecommunication), Linux, Domain Name System (DNS), Monitoring of Systems, Internet Protocol, IPv4, IPv6, Virtual Private Networks (VPN), Routing, Internetwork Packet Exchange, Wireshark, Wireless Networks, 5G (Telecommunication), Enterprise Integration, NB-IoT - **Published:** September 23, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=61010963bbaca993 ## About the Role * Degree in Telecommunications Engineering (or final-year student / recent graduate). * Familiarity with IPX networks, 5G networks, roaming setup, and interconnection models (through coursework, internships, or early professional experience). * Basic knowledge of IP networking protocols (IPv4/IPv6, DNS, routing, VPN). * Exposure to testbeds and telecom monitoring tools (e.g., Wireshark, protocol analyzers). * Basic Linux user skills. * Strong communication and coordination skills - you'll work with international MNOs and technical partners. * Analytical and troubleshooting mindset applied to telecom environments. * Ability to manage tasks independently and juggle parallel technical activities. * Availability to travel when needed for PoCs and integration projects abroad. * Good level of English (spoken and written); additional languages are a plus. Preferred experience: * Understanding of mobile and satellite communication protocols, including NB-IoT, LTE-M, 3GPP NTN, and LEO technologies. Additional requirements * English proficiency: professional working proficiency in written and spoken English. * Location: based in Barcelona; hybrid work model. * Operational availability: occasional travel abroad for PoCs and MNO integration activities. ## Description The Network Integration & Validation team leads Proofs of Concept (PoCs) with Mobile Network Operators (MNOs) worldwide, validating how Sateliot's NTN and IPX services integrate into live 5G networks. This is a junior role, ideal for an early-career telecom engineer who wants hands-on exposure to real MNO integrations, lab and field testing, and end-to-end service validation - with the support of senior engineers on the team. What you'll do * Support and help manage Proofs of Concept (PoCs) with Mobile Network Operators, both in the lab and, when required, on-site in the MNO's country. * Provide technical support during MNO integration processes, including IPX and NTN network elements. * Execute test passes and service validations, ensuring alignment with integration requirements. * Analyze and report test results, identify anomalies, and help propose technical solutions. * Collaborate with internal engineering, product, and operations teams to resolve technical blockers during integration. * Contribute to documentation of procedures, integration steps, and lessons learned from each MNO onboarding. * Act as a technical point of contact with MNO technical teams during integration and validation activities, under the guidance of senior team members. ## Related Videos - [Location Verification without GPS?](https://www.wearedevelopers.com/videos/1184-location-verification-without-gps) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [IoT: The road to sustainability](https://www.wearedevelopers.com/videos/557-iot-the-road-to-sustainability) - [IP Authentication: A Tale of Performance Pitfalls and Challenges in Prod](https://www.wearedevelopers.com/videos/1413-ip-authentication-a-tale-of-performance-pitfalls-and-challenges-in-prod) - [Unleash the power of 5G in your code: transform your apps](https://www.wearedevelopers.com/videos/1567-unleash-the-power-of-5g-in-your-code-transform-your-apps) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Finding IT & Technology English-speaking Jobs in Germany ](https://www.wearedevelopers.com/magazine/446-finding-it-technology-english-speaking-jobs-in-germany) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools)