Connectivity Test Engineer

Job title: Connectivity Test Engineer

About the Role You will join a dedicated DXC Luxoft team embedded within the client's connectivity testing department to verify the TCAM cellular modem across simulated networks (2G, 3G, LTE, 5G). The assignment follows an incremental delivery model with quarterly features, onboarding in October 2026 and end date of 31 December 2028.

What You'll Do

• TCAM Verification: verify TCAM cellular modem behavior (TCAM 1.1, 2, 3, 4) in simulated network conditions
• Test voice, SMS, and data services across GSM, 3G, LTE, and 5G
• Validate eCall, legal eCall, and next-generation eCall functionality
• Test DualAPN logic for multiple markets (HU, RO, SK, IS, GR)
• Validate VoLTE/VoNR, IMS Registration, and circuit-switched voice behavior
• Test network reject code handling and modem recovery logic
• Verify eCall-only mode for country-specific regulatory requirements
• Develop and maintain automated test cases using Robot Framework and Python
• Migrate existing test suite to TCAM2; extend coverage to TCAM3 and TCAM4
• Maintain and improve the CI/CD pipeline (Git, Gerrit, Jenkins) — keep the pipeline green
• Integrate test results into CarWeaver verification verdict system
• Manage defects and work items in Jira
• Operate and maintain mobile network simulators: Keysight Anite 9000 (SAS), Keysight UXM E7515A, and R&S CMW/CMX500
• Develop and maintain simulator services in Python
• Ensure simulator availability and reliability for the test team
• Act as subject matter expert during TCAM and mobile network troubleshooting
• Review planned TCAM implementations for Network Friendliness Mode
• Investigate voice-centric to data-centric mode migration requirements
• Contribute to pre-certification testing for new TCAM variants with mobile network operators

What We're Looking For

• Hands-on experience with Robot Framework for test automation
• Python scripting — test frameworks, simulator services, data processing
• Solid understanding of GSM, 3G, LTE, 5G
• Knowledge of NAS signaling, EMM, IMS, VoLTE
• Experience with CI/CD pipelines (Git, Gerrit or similar, Jenkins)
• Ability to read and interpret 3GPP specifications
• Experience with defect tracking and Jira
• Comfortable with Linux-based toolchains and command-line environments
• Direct experience with Keysight Anite 9000, Keysight UXM E7515A, or R&S CMW/CMX500

Nice to Have

• Experience in automotive telematics or connected car platforms
• Familiarity with eCall standards (EN 16072, 3GPP TS 26.267)
• MQTT-based service communication
• Knowledge of CarWeaver or similar verification verdict management tools
• Previous work in an OEM or Tier-1 automotive supplier environment
• Experience with modem configuration and market adaptation testing

Compensation & Benefits

• Relocation options; opportunities to work in an international environment
• Private healthcare insurance with unlimited specialist access; full dental support; travel insurance
• Luxoft Social Benefit Fund, Multisport card, wellness programs, and well-being initiatives
• In-house training, certifications, mentorship, and leadership programs
• Generous leave: 20 or 26 days annual leave, parental and maternity/paternity leave options
• Additional benefits: cafeteria discounts, banking and car leasing offers, and access to self-learning resources
• Remote work within Poland where applicable; friendly, multicultural team