A Malware Developer is an individual who creates malicious software, such as viruses, worms, Trojans, and ransomware, to exploit vulnerabilities in systems, networks, or applications. These individuals may work for cybercriminal organizations, nation-state groups, or ethical hacking teams for research and defensive purposes. Their job often involves coding in languages like C, C++, Python, or Assembly and using various obfuscation techniques to evade detection. While illegal in most cases, cybersecurity professionals may study malware development to better understand and defend against cyber threats.