According to the invention, there is provided a novel soybean variety designated RJS28002. This invention thus relates to the seeds of soybean variety RJS28002, to the plants of soybean RJS28002 to plant parts of soybean variety RJS28002 and to methods for producing a soybean plant produced by crossing plants of the soybean variety RJS28002 with another soybean plant, using RJS28002 as either the male or the female parent.