Mobile core Solution Engineer

We are looking for a Mobile Core Solution Engineer to join our SIM for Things (SFT) team. In this role, you will drive the analysis, end-to-end design, development, and delivery of core mobile network solutions for global IoT connectivity. You will bridge high-level technical architecture with hands-on delivery, aligning solutions with business, operational, regulatory, cost, and time-to-market objectives.

Working across cross-functional teams, you will evaluate technology options, balance vendor capabilities with in-house integration, and take end-to-end ownership from requirements engineering to production rollout. You will play a pivotal role in performing technical assessments, executing complex call-flow analyses, and guiding platform evolutions.

Tasks Description:

Review, validate, and design technical solutions to ensure alignment with business, regulatory, operational, budget, and time-to-market constraints.
Lead technical platform development, contribute to product roadmaps, and perform technical assessments for network evolutions.
Drive end-to-end implementation projects across the lifecycle, coordinating with stakeholders on solution design, rollout, integration, and operational handoff.
Balance third-party/vendor capabilities with internal software development and integration efforts.
Draft and review detailed functional and technical specifications, integration guidelines, and RFP documents.
Perform architecture and impact analyses, defining operational methods, procedures, and documentation for product, marketing, and operations teams.
Apply deep call-flow analysis and troubleshooting expertise to solve complex core network, protocol, and interoperability issues.
Act as a technical authority and reference point for internal and external stakeholders, providing expert guidance and building trust across teams.

Experience & technical expertise:

Degree in Telecommunications, Computer Science, IT Engineering, or equivalent experience.
6+ years of professional experience in telecom, IT, or mobile connectivity environments, with a strong blend of design and implementation skills.
Solid end-to-end understanding of mobile core network architectures (2G, 3G, 4G LTE, and 5G Core) across traditional and cloud environments (AWS, Azure, or Google Cloud).
Strong protocol and signaling expertise across HTTP, SS7, Diameter, MAP, INAP, and GTP.
Hands-on familiarity with SIM/eSIM ecosystems, including eUICC, SM-DP/SM-SR, SM-DP+, SIM applets, and Over-The-Air (OTA) provisioning.
Proven experience conducting end-to-end call-flow analysis, network troubleshooting, and integration testing.
Broad understanding of the international carrier landscape, IoT/M2M platforms, roaming, and MVNO/MVNE environments.

Nice to have:

Direct experience with specific mobile core components (e.g., P-GW/GGSN, HSS/HLR, PCRF, UPF, AMF, SMF).
Prior experience delivering complex telecom solutions on time and within scope.
Familiarity with containerized microservices and cloud-native network deployments.

Soft skills

Strong technical communication, negotiation, and presentation skills—able to bridge technical detail and business context.
Self-driven, autonomous contractor mindset with high ownership and a commitment to delivery timelines.
Structured, analytical problem solver comfortable navigating technical complexity.
Excellent team player experienced in working within international, multi-cultural environments.
Proactive approach to risk management, platform optimization, and stakeholder alignment.