Responsibilities: Act as the lead OSS solution architect across the full pre-sales lifecycle – from opportunity qualification and technical discovery through proof-of-concept, proposal, and contract award – partnering closely with Sales leadership to shape, qualify, and grow the regional pipeline. Own and orchestrate end-to-end responses to RFx (RFI / RFP / RFQ), including solution design, compliance and traceability matrices, win themes, technical narratives, effort and Bill-of-Materials estim…