developer
US /dɪˈvel.ə.pɚ/
UK /dɪˈvel.ə.pɚ/

1.
a person or company that creates new products, especially computer software, or new buildings or areas of land for people to use
:
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She works as a software developer for a tech company.
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The city approved the new project by the real estate developer.
2.
a chemical used in photography to make an image visible on film or paper
:
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He poured the developer into the tray to process the film.
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The photographic developer needs to be at a specific temperature.