Red 6 is an innovative Augmented Reality (AR) technology startup leading the way in synthetic air combat training. Our primary technology, supporting our ATARS product, enables pilots to simulate the cognitive challenges of flying while accessing realistic, scalable training in dynamic outdoor environments. We are seeking a Principal Software Engineer to play a key role in designing and delivering next-generation AR pilot training systems. This position is highly hands-on, driving complex software development while also providing functional leadership to a small team of engineers. You will work across rendering systems, game engine infrastructure, and simulation environments to deliver high-impact features for our military customers. In addition to your technical contributions, you will guide and mentor four engineers, ensuring alignment with program goals, technical standards, and delivery timelines. This role is ideal for someone who thrives as an individual contributor while also shaping a high-performance team.