Computer software design, computer programming, and maintenance of computer software; Computer software development and computer programming development for others; Design and development of computer hardware and software; Design and development of software in the field of mobile applications; Design of optical and microoptical components; Design of optical components; Design of telecommunications apparatus and equipment; Research relating to mechanical engineering; Software authoring; Software development and product development consulting in the field of engraving; Technical support services, namely, remote and on-site infrastructure management services for monitoring, administration and management of public and private cloud computing IT and application systems; Technical support services, namely, troubleshooting in the nature of diagnosing computer hardware and software problems; Updating of smartphone software