Senior QA Automation Engineer with Python and STC

Luxoft Germany; Bengaluru; On-site; INR 1,500,000 - 2,300,000; Full time

Job summary

Luxoft Germany is seeking an experienced QA Automation Engineer for a networking verification project in Bengaluru. You will design and execute long-running soak tests using Spirent TestCenter, automate API/CLI tests with Python, and integrate tests into CI/CD pipelines.

You will work with cross-functional teams to diagnose issues, reproduce hardware/firmware defects, and improve test coverage across L2/L3 protocols.

Qualifications

• 6+ years QA background, 4+ years in networking test domains.
• 4+ years API/CLI testing in Agile/SCRUM; Python preferred.
• Experience automating Spirent TestCenter with Python API (StcPython, py-stcrestclient) or HLTAPI.
• Experience with STC Lab Server architecture and test session management.
• Developing long-running soak automation with robust results collection and reporting.
• Hands-on with L2/L3 protocols via STC and ability to emulate router topologies.
• Familiarity with RFC 2544/2889 benchmarking for throughput and latency.
• Experience using AI tooling to improve productivity and delivery.

Responsibilities

• Design, implement and maintain long-running soak test scenarios using Spirent TestCenter APIs.
• Derive automation requirements from functional specs and hardware validation reports.
• Collaborate with development to translate requirements into automated test suites.
• Develop end-to-end solution validation automation and integrate into CI/CD.
• Implement and debug Python test scripts on Linux platforms.
• Analyze automation failures and triage root causes with engineering.
• Integrate test suites into CI/CD pipelines.
• Collaborate with hardware/software teams to triage failures and drive quality.
• Reproduce hardware/firmware defects through systematic test isolation.
• Leverage AI tooling for code generation, reviews, and automation.
• Review customer deployments and test gaps to improve coverage.

Skills

QA Automation

Networking testing

Python

STC Python API

Stcrestclient/py-stcrestclient

Long-running tests

CI/CD

Lab Server

RFC 2544 benchmarking

AI tooling

Performance/convergence testing

Troubleshooting

Test reporting

Tools

Spirent TestCenter

Python scripting

HLTAPI

REST-based STC API

L2/L3 protocols (Ethernet, VLAN/QinQ, BGP, OSPF, IS-IS, VXLAN, EVPN)

Linux (Ubuntu, Debian)

Jenkins/GitLab

JIRA/Confluence

Job description

Project description

Project Description: Product verification & testing for an L1-L3 Traffic Generator Solution for a Global Networking Testing and Validation equipment provider.

Our team: A team of networking enthusiasts willing to contribute to customer success.

Technologies used: Networking protocols, traffic generation tools, Windows/Linux servers, network virtualization, network management tools, microservices.

Opportunities: Networking and testing certifications, collaboration with an international team of professionals, working with the latest networking technologies and concepts, access to training.

Responsibilities

• Design, implement and maintain long-running automated test scenarios (soak tests spanning days/weeks) using Spirent TestCenter APIs, covering performance, scalability, convergence, and protocol stability under sustained traffic load.
• Derive automation requirements from manual functional test specifications and hardware validation reports.
• Collaborate with development team to translate software requirements into high-quality test automation suites.
• Develop automation for the end-to-end solution validation and integrate the automation for seamless validation.
• Implement, execute and debug Python automated test scripts on Linux-based platform.
• Analyze and manage automated regression test execution failures.
• Debug and troubleshoot complex issues and work closely with the engineering team on the failures and validate the fixes.
• Integrate test suites into CI/CD pipelines.
• Collaborate closely with hardware and software development teams to triage test failures and drive quality improvement.
• Reproduce and root-cause hardware/firmware defects through systematic test isolation.
• Make use of AI tooling (e.g. Claude Code, agentic AI) given customer-specific heavy usage patterns.
• Review customer deployments and customer-found issues and address any gaps in the test coverage.

SKILLS

Must have

• Overall QA background of 6+ years, with 4+ years in testing networking domain-related applications.
• QA Automation experience in an Agile/SCRUM team, focused on API and/or CLI testing (4+ years); Python strongly preferred (other comparable languages considered).
• Automated Testing for API or CLI 4+ years, including experience in test harness or framework development.
• Hands-on experience automating Spirent TestCenter (STC) using its Python API — specifically StcPython native API, the REST-based stcrestclient library (py-stcrestclient), or HLTAPI (High Level Test API); ability to script traffic port configuration, device emulation, traffic stream setup, result subscription and statistics retrieval.
• Familiarity with STC Lab Server architecture: connecting to chassis, managing test sessions, and executing automated sequences without GUI dependency.
• Experience writing and maintaining long-running automation suites (soak tests of days/weeks duration) with robust result collection, error handling, and reporting.
• Working knowledge of L2/L3 protocols exercised through STC: Ethernet, VLAN/QinQ, BGP (v4/v6), OSPF (v2/v3), IS-IS, MPLS/LDP, BFD, and data-center protocols such as VXLAN and EVPN; ability to configure emulated/simulated router topologies for scale and convergence testing.
• Familiarity with RFC 2544 / RFC 2889 benchmarking methodology for throughput, latency, frame loss and back-to-back testing.
• Practical experience with AI tooling in day-to-day activities to improve productivity and delivery quality (code generation, code review, automation, agentic AI, MCP usage, etc.).
• Experience in performance, scale, and convergence testing; ability to analyze and improve performance and convergence at system level.
• Ability to develop and publish solution validation documents and test reports.
• Strong verbal and written communication skills; able to communicate effectively across QA and development teams.
• Highly motivated, self-driven, and able to collaborate cross-functionally to meet challenging goals.

Nice to have

• Knowledge Linux OS variants (Ubuntu, Debian).
• CI/CD (Jenkins, GitLab, or similar) and issue tracking tools (JIRA, Confluence).
• Knowledge of STC Tcl API or legacy Tcl/HLTAPI scripting (useful for migrating existing test suites to Python).
• Familiarity with additional traffic generation or network testing tools (e.g., IXIA/Keysight, Wireshark, Iperf).