5G Core Test Automation Engineer

Job Description Tester – 5G NTN Core Automation & Simulator Tooling Level: Software / Senior Software Engineer Type: Full‑time Experience: 3+ years Telecom Role Summary Hands‑on Test Engineers responsible for functional, non‑functional, security, and chaos testing of a ground‑up 5G Core with optional exposure to NTN (Non‑Terrestrial Networks). The role includes developing automation suites, UE/gNB/NF simulator tooling, and ensuring the reliability and resilience of cloud‑native 5G core functions deployed on AWS. Key Responsibilities Test Execution Execute functional, performance/load, security, and chaos test cases across lab and pre‑production AWS environments. Validate 5G core call flows: registration, authentication, session establishment/modification/release, mobility, and policy enforcement across AMF/SMF/UPF and related NFs. Verify protocol behaviour for NGAP, GTP‑U, PFCP, NAS, and PDCP‑adjacent handling. Automation & Simulator Tooling Build, extend, and maintain automation suites and UE/gNB/NF simulator tooling under Test Architect guidance. Integrate automated suites into CI/CD pipelines for continuous regression, interoperability, and protocol‑level validation. Chaos & Resilience Testing Execute fault‑injection scenarios: pod/node failure, network partition, latency injection, feeder‑link interruption, and other resilience‑focused tests. Capture resilience metrics and support engineering teams in analysing failure modes. Reporting & Collaboration Log, triage, and track defects; produce detailed test reports, logs, and protocol traces for engineering and customer review. Work closely with developers and architects to reproduce, isolate, and resolve issues. Mandatory Skills & Experience 3+ years Telecom experience with hands‑on 5G network‑function testing (functional + non‑functional). Practical experience with security and chaos testing for distributed, cloud‑native systems. Hands‑on experience with automation and simulator tooling: UE/gNB simulators, traffic generators, protocol test suites. Working knowledge of Kubernetes test environments and CI/CD‑integrated test execution. Scripting proficiency in Python/Bash, with ability to read C/C++ for protocol‑level defect isolation. Familiarity with Robot Framework, PyTest, and packet analysis using Wireshark. Bachelor’s degree in Computer Science, Electronics, Telecommunications, or equivalent. Preferred Qualifications Master’s degree in a relevant engineering discipline. Exposure to validating scalability, resilience, security, and deployment readiness of telecom systems on AWS. NTN (Non‑Terrestrial Network) knowledge or experience is a plus, not mandatory. Experience with observability stacks: Prometheus, Grafana, OpenTelemetry, ELK. Productive use of AI assistants (Claude, Cursor, Codex, etc.) for automation and failure analysis. If interested please share your updated CV to [email protected]