I have a lot of ideas, and a lot of skills. Where can I find ways to use them to become part of a startup?

I interpret my understanding of what you had written in a short summary:
"you come with skills (coding skills & IT management, i suppose) & ideas where you want to offer yourself to partner with a startup and grow with it - and you like to know how to make this happen"

There are many challenges that need to overcome before we even talk about offering ourselves to a startup:

1. Have you package yourself well so that you can market yourself easier and increase the chance to attract startups to take you in? You can't sell all your skills and ideas - your only saleable items are niche skills and valuable validated ideas.

2. Do you have personas for the startups so that you know who you are looking for?

3. It seems that you are very skillful and have many ideas, but these are professional's qualities and not an entrepreneur's qualities. To join as a team in the startup, you are acting as a partner rather than an employee. Have you conduct an evaluation or seek opinions from others on for entrepreneur's score or capability? In addition, you can't do everything from developing to maintain apps ... you probably will involve strategic planning to grow the startup and lead a small team when the startup grow - did you possess the necessary skills for theses?

4. It is essential to align your goals to your desires and how your involvement with startup affects your family and friends? This is critical to avoid making the wrong choices and developing unnecessary dissonance in the future.

If you have all the above, you know what to do next. Otherwise, contact me where I customise an advisory package based on what answers you have made.

Have you had a look on Google for startup + jobs + equity?

There are sites like https://angel.co/ who call themselves "the world’s largest startup community."

You can find interesting startups that are looking for cofounders and team members who will pay with a combination of salary and equity.

You wouldn't get profits but you would get a (small) share of the business.

Obviously, there's a risk calculation to be done with startups and how much money you may be prepared to lose in lost earnings if things don't go well.

It sounds like you have incredibly valuable skills. I am starting two businesses and would love to chat with you about how you might be able to help. Let me know!

Getting honest feedback, while sometimes painful, is an essential first step in turning your business dream into a reality. After you have developed your core business idea, some market research is in order. In the research process, be sure to focus on more than the success stories. Partnerships will be valuable as you try and grow your business. During this process, you may learn things that will cause you to reshape or reconsider your original idea, which is important during the planning phase. Another vital step in launching a new business is developing a business plan. Business plans can be formal or informal, but they allow you to crystallize the core components of your business before launch. Business Model Generation is another excellent book that breaks down the nitty-gritty details of planning a profitable small business.
You can read more here: https://www.thebalancesmb.com/what-to-do-with-ideas-for-business-1200673
Besides if you do have any questions give me a call: https://clarity.fm/joy-brotonath