Email Checker Development with Java/Python

I'm in need of a seasoned professional with extensive experience in Java or Python to develop an efficient email checker. The primary purpose of this tool is to filter and group emails.

Key Requirements:
- Development of a fast-running, headless email checker using Openbullet
- Incorporation of 2Captcha via manual captcha solving
- Use of residential proxies for the operation

Ideal Skills and Experience:
- Proficient in Java or Python
- Previous experience with Openbullet
- Familiarity with 2Captcha
- Expertise in using residential proxies
- Ability to build a fast, efficient tool