Finding a full-stack developer entails a number of steps, from determining your specific requirements to screening potential candidates. Here’s a step-by-step guide to assist you in the process:

1. Determine Your Requirements:

   • What specific technologies are you working with or planning to use?
   • Do you have a preference for a particular programming language or framework?
   • How much experience do you want the developer to have?
   • Are you open to remote candidates or prefer someone local?

2. Write a Clear Job Description:

   • Clearly outline the responsibilities of the role.
   • Specify the technical skills and experience required.
   • Mention any soft skills or cultural fit aspects you’re looking for.
   • Include details about compensation, benefits, and other perks.

3. Use Multiple Platforms:

   • Job portals: Websites like LinkedIn, Indeed, Glassdoor, or Stack Overflow Jobs are popular.
   • Recruitment agencies: They have a database of potential candidates and can help you in the initial screening process.
   • Referrals: Ask your network or your current employees for referrals.
   • Freelancer platforms: Websites like Upwork or Toptal can be useful if you’re open to hiring on a contract basis.

4. Screening Process:

   • Initial Screening: Filter out resumes that don’t meet your criteria.
   • Technical Assessment: You can use platforms like HackerRank or Codility for coding tests.
   • Interviews: Conduct multiple rounds including technical deep-dives and cultural fit assessments.
   • Project or Task: Consider giving a small project or task to gauge their practical skills.

5. Avoiding Spam Issues When Reaching Out:

   • As per your additional info, when reaching out to potential candidates via email, especially in bulk, here are some tips to avoid your emails being marked as spam:
     • Use a reputable email service provider.
     • Personalize your emails. Avoid generic mass emails.
     • Avoid spammy subject lines.
     • Include a clear unsubscribe option.
     • Make sure your email list is clean and updated.
     • Regularly check feedback loops and remove any emails that bounce.
     • Comply with all regulations regarding unsolicited emails.

6. Make an Offer:

   • Once you find a suitable candidate, extend a formal job offer.
   • Ensure that the offer is competitive and in line with industry standards.

7. Onboard and Integrate:

   • Once hired, ensure a smooth onboarding process.
   • Introduce them to your team and provide all necessary resources and training.

Remember, the key to finding the right full-stack developer is a combination of clear communication about what you need, a thorough screening process, and offering a competitive package.