Banner for in app marketing

I am looking for a talented designer to create a custom banner for in-app marketing. The banner will be used to highlight a new feature and should be bold and colorful. The dimensions of the banner are custom, so the ideal candidate should have experience creating designs that are adaptable to different sizes.

Skills and Experience:
- Strong graphic design skills
- Experience creating custom banners for in-app marketing
- Proficient in design software such as Photoshop or Illustrator
- Ability to create bold and colorful designs that can adapt to different sizes
- Strong attention to detail and ability to meet deadlines