Anywhere within Spain, Spain | Posted on 31/07/2026

We're looking for a Senior Core NetworkEngineer with strong Configuration Management expertise to take on a technicalleadership role in one of the most ambitious Core Network programmes in Europe,working directly with one of the continent's leading telecommunicationsoperators.

This is a hands-on leadership positionwithin a small, high-impact team. You'll set the technical direction, defendyour decisions in front of demanding stakeholders, and lead a squad that countson you to have their back. If you enjoy environments where your judgementcarries weight and your decisions actually ship, this role is built for you.

What you'll do

- Own the technical design of Configuration Management capabilitieswithin a complex, multi-vendor Core Network environment, ensuring scalabilityand resilience.
- Lead a delivery squad: you set direction and review design, whileyour team handles day-to-day platform coding.
- Make and defend technical decisions in front of the customer's CoreEngineering team.
- Drive the translation of operator change practices — change windows,CMDB updates, rollback expectations — into automated, auditable gates.
- Own vendor and data-model engagement across Ericsson, Huawei andother in-scope vendors, including YANG modules and NETCONF exports.
- Be the technical escalation point for the account, from vendorengagement to lab access and integration with the customer's change-managementsystems.

Requirements

- Solid experience running a Configuration Management tooling stackfor mobile Core — Cisco NSO, HPE Service Director, Ericsson ENM or anequivalent home-grown platform: golden configurations, drift detection,templating.
- A real track record managing configuration change on live Core :change windows, governance, rollback strategy, post-change KPI validation, andthe discipline that 24x7 environments demand.




- Working fluency with NETCONF and YANG — you've personally runget-config and edit-config against live nodes and know how to read a schemadeviation.
- Hands-on experience with at least one 5G SA Core (Ericsson, Nokia orHuawei), plus solid conceptual grounding across 5G SBA and 4G EPC architecture.
- A track record leading a delivery squad through a customer-facingservice delivery , integration or first-of-kind deployment.
- Fluent English; working Spanish is a strong plus, as customersessions run in both languages.

Nice to have

None of this is mandatory on day one; a strong Core lead will pick it up quickly working alongside our platform team.

- GitOps operations and the YANG toolchain (libyang, pyang, yangdiffor similar).
- Reading-level Python and Kubernetes literacy — enough to review pullrequests and pair with engineers on tricky paths.
- Multi-element orchestration experience (Cisco NSO or HPE ServiceDirector).
- 3GPP interface familiarity, prior tenure at a Tier-1 Europeanoperator, VoLTE/IMS exposure, or contribution to IETF/3GPP/ETSI standards work.
- Competitive salary, health insurance and Adaptable Compensation Plan as an enterprise benefit
- Annual training budget to help you staytechnologically up to date and grow professionally
- Time flexibility : our life is not just aworking day; we give you flexibility both in entry and exit. In addition, we enjoya reduced working day on Fridays and Summer (July and August)
- Our projects are cutting-edge in technology and are in both nationaland international environments, making your growth global
- We provide a flexible working model , adapted to the needs of each role and team, with options from remote to hybrid or office-basedarrangements.
- Our employee satisfaction survey tells us that we have a great work environment and great professionals in the company. Do you want to check it? Join us!

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📌 Senior Core Network Engineer (España)
🏢 Future Connections
📍 España