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The design stage of the first phase of the Square Kilometre Array (SKA) telescopes has been recently completed by the SKA Organisation (SKAO). This marks the initial step towards an ambitious vision of designing, constructing, and operating telescopes with an equivalent collecting area of one square kilometre. At the completion of this design stage the project has entered a bridging period to manage work until construction funds are available. During this period many of the software teams from the design stage have been engaged in prototyping lean-agile processes, structures, and practices. By the end of the period the goal is to have pivoted from a document based, stage-gated set of processes arranged around design consortia to a code based, value-flow driven, lean-agile set of processes unified around the Scaled Agile Framework. Two years since the start of this transformation this paper reflects on these processes. We highlight some practices that have been found helpful, as well as the challenges faced. The implementation status is described, along with the main technical and cultural implications, and the preliminary results of adopting a lean-agile culture within the SKA Organisation.
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