Software Integration & Test Engineer

SOFTWARE INTEGRATION & TEST ENGINEER Mesh Optical Technologies was founded on the belief that optical photons will be at the center of advanced technologies in the coming century. Making advanced technology ubiquitous means building at scale, and that’s exactly what we’re doing at Mesh. We are seeking a Software Integration & Test Engineer to own the software that automates, controls, and monitors our production lines and test infrastructure. You will build the systems that drive production equipment, orchestrate test execution, and ensure every process step is observable, traceable, and reliable at volume. RESPONSIBILITIES Own the software that automates production lines and controls hardware interfaces between factory tools, stations, instruments, and workflows Own the software that automates end-of-line production test systems and development lab test environments, ensuring deterministic execution and reliable results at throughput Develop and maintain test automation frameworks used for qualification, validation, and manufacturing, including instrument control, sequencing, and pass/fail determination Build and maintain data acquisition pipelines for test results, process logs, and system metrics, ensuring production data is captured, stored, and accessible for analysis Implement health monitoring, fault detection, and alerting across manufacturing and test software systems Support root-cause analysis for line interruptions, process excursions, test escapes, and automation failures Work closely with process and manufacturing engineering to ensure every process parameter is fully observable, controllable, and traceable across the line Support CI-driven test and integration environments that validate hardware, firmware, and software changes prior to production deployment Extend automation and control systems to support new product introductions, process changes, and production ramps Interface with mechanical, electrical, optical, and manufacturing engineering teams to resolve integration issues that span hardware and software boundaries BASIC QUALIFICATIONS Bachelor's or Master's degree in computer engineering, computer science, electrical engineering, or a related discipline 1+ years of hands-on software development experience (internships, co-ops, and substantive project experience qualify) Strong proficiency in Python, with experience writing production-quality code Experience developing and operating software in Linux environments Familiarity with CI systems, automated testing pipelines, and deployment workflows Demonstrated engineering intuition, critical thinking, and comfort with ambiguity Willingness to work extended hours and weekends as needed PREFERRED SKILLS AND EXPERIENCE Experience interfacing software with manufacturing equipment, instrumentation, or controls systems (e.g., instrument control via GPIB, USB, serial, or Ethernet) Strong proficiency in C or C++ in addition to Python Strong understanding of networking fundamentals (TCP/IP, serial protocols, device communication) Experience with data acquisition, time-series data, or production database systems Experience designing software systems for observability, fault tolerance, and long-term maintainability Experience with hardware-in-the-loop testing, test automation frameworks, or automated validation systems Background in hardware-centric or high-volume manufacturing environments Experience with containerization, infrastructure-as-code, or deployment automation Familiarity with MES systems, production traceability, or factory data infrastructure Experience with version control (Git) and collaborative software development workflows COMPENSATION AND BENEFITS: Pay range: Software Integration & Test Engineer: $115,000.00 - $140,000.00/per year Title and base salary are determined on a case by case basis commensurate with experience and merit. In addition to base salary, compensation for this role includes: Eligibility for long-term incentives including company stock options and discretionary bonuses awarded for exceptional achievements. Comprehensive medical, vision, and dental insurance with significant cost covered by the company for yourself and dependents. Paid parental leave and flexible PTO (3 weeks accrued vacation and 10 company holidays per year). 401(k) retirement plan access. Relocation assistance to sunny Los Angeles.