Senior QA Automation Engineer

About Sensia

We bring together the best of the best: the pioneering process automation, real-time control and IoT technologies of Rockwell Automation, combined with the unmatched measurement and instrument, software and analytics capabilities of Schlumberger.  Sensia is further strengthened by the oil and gas domain expertise and artificial lift experience shared by Rockwell Automation and Schlumberger. The result is Sensia – the leading automation specialist in oil and gas production, transportation and processing with a team of more than 1,000 experts serving customers globally in more than 80 countries. As the first fully integrated oilfield automation solutions provider, Sensia makes the production, transportation and processing of oil and gas simpler, safer, more secure, more productive and better understood from end to end. Now every oil and gas company can experience the advantages of industrial-scale digitalization and seamless automation, enabling each asset to operate more productively and more profitably.

We are also looking for the best of the best to join our team. If you have top-tier talent with a collaborative mindset, exceptional problem-solving skills, and the ability to generate innovative, out-of-the-box solutions. We would love to have you join our team!

Job Description

Role Overview

Extend existing test suite to work with new replacement application written in .NET, ensuring consistency of behavior and feature parity.  Additionally, maintain an automated test suite for the companion Nuxt-based operational/configuration web UI.

Key Responsibilities

• Maintain and extend automated test coverage for a large legacy JavaScript/TypeScript codebase targeting embedded Linux devices and cloud containers.
• Integrate automated tests into the continuous integration and delivery (CI/CD) pipelines
• Set up and manage test environments to accurately represent the production environment
• Troubleshoot and resolve bugs as they arise from the globally deployed population of devices and users
• Stabilize legacy Javascript/TypeScript product quality, add & perform characterization tests where needed
• Support the transition to a new .NET-based application by ensuring feature parity and consistent behavior through automated regression testing.
• Manage and maintain test data, including generating or acquiring representative data sets.
• Define and track quality assurance test metrics and report outcomes. Update test cases in requirement tracking tools for traceability.
• Write and maintain detailed test documentation, including test plans, test cases, and test scripts explanation.

• ·Maintain, extend and optimize automation test suite for Nuxt web UI admin screens for configuration, monitoring, and diagnostics; optimize rendering and bundle size for lowpower devices.
• Validate UI performance and rendering efficiency on resource-constrained edge devices.

• Use knowledge of TCP/IP networking to troubleshoot issues that arise from high-latency, small-MTU, high-packet-loss metered networks and, when necessary, modify code to better handle these networks
• Maintain automated tests to validate Modbus RTU/TCP communications and ensure stability under high-latency, low-bandwidth, and high-packet-loss network conditions.

• Maintain automated tests for legacy communication interfaces (e.g., OSISoft/Aveva PI, KepServerEX)
• Use deep knowledge of TCP/IP networking to simulate and troubleshoot issues in metered or unstable network environments
• Contribute to protocol compliance and reliability testing across industrial integration points

•          Support and validate optimization efforts for CPU and memory utilization and refactor code to minimize flash wear
•         Support and validate device health/status “scraping” code that collects device temperature, signal strength, memory and CPU usage, docker stats, etc.
•          Support and validate device health/status “scraping” code that monitors network status, internal modem status (mmcli, nmcli) and external modem status (JSON-RPC or SSH-based status retrieval)
•          Support and validate integration with external industrial routers (e.g., Teltonika RUT series) when internal modems aren’t applicable; align with project‑specific approvals and wiring practices. 
•          Testing with real hardware and physical devices

• Consider and support security best-practices; least privilege, secret handling, signed artifacts
• Analyze and validate implementation for unplanned power loss and degraded communication links, targeting graceful recovery and minimal data loss

• Experience in developing and maintaining test automation frameworks and scripts using industry-standard tools and libraries. Ability to write efficient, scalable, and maintainable code for automated tests.
• Excellent problem-solving skills and ability to work independently and collaboratively
• Excellent communication skills, both written and verbal:
  • Strong English proficiency and the ability to clearly communicate and understand abstract concepts
  • Ability to effectively interact with team members and stakeholders.
  • Ability to work collaboratively in cross-functional teams and contribute to problem-solving processes.
• Passionate about troubleshooting and debugging issues
• Experience with common test frameworks and proficiency in Python, JavaScript, C# for test automation.
• Modbus RTU/TCP expertise; serial bus troubleshooting (RS‑485/RS‑232)
• Networking knowledge, dealing with high-latency networks, small MTUs, packet loss, and metered networks
• Experience with IoT device testing and validation, including hardware, firmware, and software components. Developed automated test cases/scripts based on requirements or acceptance criteria.
• Proficiency in test management and bug tracking tools. Understanding of test case management, test execution tracking, and defect lifecycle processes.
• Experience in testing distributed applications and their interactions across microservices architecture.
• Experience with build process automation, CI/CD pipelines and tools such as Jenkins, Artifactory, and Bitbucket.

• Experience working with Agile toolsets and technologies such as Jira, Confluence, and Bitbucket.
• Ability to independently deploy and install cloud-native microservices on platforms.

• Familiarity with industry IoT standards and protocol such as MQTT/SparkplugB, ZeroMQ, ProtoBuf, Kafka, and HTTP
• Strong experience of Linux, Bash, Shell scripting, Docker, TCP/IP Networking, Kubernetes, and excellent debugging skills
• ·Cellular on Linux: hands‑on with mmcli (modem state, APN/profile, SIM/PIN ops) and nmcli (connections, metrics, metered profiles, link selection). (Internal playbooks reference nmcli for link testing.) 
• ·3+ years working with Docker or other containerization technologies
• ·CI/CD & Release: multi‑OS runners, artifact signing, SBOMs/vuln scanning
• ·Proficiency in JavaScript/TypeScript and .NET is plus