To discover and engage with influencers in a specific industry niche, you would typically use a mix of manual research and automated tools. Manual research can involve searching through social media platforms, using relevant keywords and hashtags. Automated tools, on the other hand, leverage big data and machine learning algorithms to streamline the discovery process. Influencer marketing platforms like HypeAuditor, Upfluence, or Flinque come with powerful search functionalities and audience analytics, helping you find relevant influencers quickly and scientifically.

1. Keyword and Hashtag Search: Begin by identifying relevant keywords and hashtags that pertain to your industry. Use these keywords to search on social media platforms to find potential influencers.

2. Influencer Marketing Platforms: Platforms like Flinque offer advanced search functions that let you find influencers based on niche, audience demographics, reach, and engagement rates. This can help you find influencers who are highly relevant to your industry.

3. Analytics: Once you have a list of potential influencers, use the analytics features of these platforms to study their audience. Look at demographic information, interests, and engagement levels to ensure that the influencer’s audience aligns with your target market.

4. Engagement: Reach out to prospective influencers through their preferred contact method. Be professional and clear about what you are offering and what you expect in return.

Remember, every industry and brand will have different requirements, and the best choice of tools and strategies really depends on your specific needs. In general, a balance of manual research and automation through tools like Flinque can provide you with a comprehensive view of your potential influencers and their audiences. This allows you to execute a more effective and targeted influencer marketing campaign.