Dear Hiring Manager,

As a GNC Engineer with 7 years of experience in aerospace and space systems settings, I apply with enthusiasm for this opportunity.

Per your requirements, I possess in-depth expertise in spacecraft attitude control sensors and actuators, controller performance analysis, and developing/scaling complex simulations in cloud and cluster computing environments. 

I am currently the Lead GNC Engineer (Launch Vehicle Navigation) at Halliwell Aero Systems. My role is to develop flight software navigation algorithms and sensor architectures for a super confidential launch vehicle program, including testing in hardware-in-the-loop and vehicle ground testing environments. I also oversee sensor hardware checkouts and take part in console operations for vehicle navigation systems. This builds upon my prior role as a GNC Engineer at Infinity, where I had the opportunity to work on tremendously thrilling programs for NASA and Space X contractors.

In addition to my experience, I possess a Bachelor of Aerospace Engineering. I am familiar with all tools and programs outlined in your description, including Linux, Unix, PostgreSQL, MySQL, MongoDB, InfluxDB, Elasticsearch, Julia, Fortran, STK, FreeFlyer, Python, C++, and C.

Halliwell is relocating its Design team to Michigan, so I am seeking a new position closer to home. I thrive on devising elegant solutions to solve complex aerospace and space challenges, which is why this opportunity strongly appeals to me.

Please find attached my résumé for your consideration. Thank you very much for your time. I look forward to hearing from you regarding next steps.

Yours sincerely,

Jeffrey Chang