As a photonics engineer, you work with photo energy and technology to create new products and improve existing goods, such as barcode scanners, lasers, and fiber optics. Research and development are your primary responsibilities, but your other job duties include creating design plans for product innovations, testing and revising prototypes, determining solutions for existing issues, and seeking cost-effective alternatives for current technology. You need strong scientific and mathematical reasoning along with computer skills to perform well as a photonics engineer.