Herbert Wagner started engine developments at Junkers in 1936, placing Adolf Müller in overall charge of the project.
In October 1939, under pressure from the RLM, Junkers moved all their engine work to Jumo's Dessau factories from their main plants at Magdeburg.
In the HeS 30, the rotor and stators shared compression about 50-50, a design originally provided by Rudolph Friedrich of Junkers.
Overall the engine had a five-stage compressor providing air at a compression ratio of 3:1 to ten flame cans, which powered a single-stage turbine.
The turbine was also unique for the era, using a set of guide vanes that were adjustable for various operating speeds.
In addition to problems with the move, the compressor turned out to provide more mass flow than initially suspected, forcing a redesign of the turbine.
Helmut Schelp, in charge of engine development at the RLM, refused to give Heinkel a production contract, an event Hans von Ohain claims brought Ernst Heinkel near tears.