Senior Brownfield Project Maintenance Engineer

Primarily looking for contract work (short-term or long-term) for brownfield projects needing general maintenance (refactoring, optimizing, fixing, identifying root causes of bugs/vulnerabilities). Can fill niches where LLMs are prohibited, have failed, or are inefficient/expensive. Also capable of working with unfamiliar, obscure, or poorly documented codebases/tech-stacks, provided time for study/training is compensated.