Connectivity Test Engineer

Location: Bucharest, Romania

Employment Type: FULL_TIME

Experience Level: Senior

Language: English: C1 Advanced

About the Position

Join DXC Luxoft as a Connectivity Test Engineer in Bucharest, Romania, to verify TCAM cellular modem behavior across 2G, 3G, LTE, and 5G technologies.

Responsibilities

• 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 technologies
  • Verify 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

• Test Automation & CI

  • 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

• Simulator & Lab Operations

  • 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

• SME Contributions

  • 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

Requirements

• Must Have

  • Hands-on experience with Robot Framework for test automation
  • Python scripting - test frameworks, simulator services, data processing
  • Solid understanding of cellular technologies: GSM, 3G, LTE, 5G
  • Knowledge of mobile network protocols: NAS signaling, EMM, IMS, VoLTE
  • Experience working with CI/CD pipelines (Git, Gerrit or similar, Jenkins)
  • Ability to read and interpret 3GPP specifications
  • Experience with defect tracking and work management in 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)
  • Experience with 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

We Offer

• Competitive salary
• Opportunity to work in a dynamic and innovative environment
• Professional growth and development opportunities

About the Company

DXC Luxoft is a leading provider of software engineering services, specializing in the automotive industry. We are committed to delivering high-quality solutions and fostering a culture of continuous improvement and innovation.