We are a software development company with only 8 employees but all of us are seniors in different fields. We have developed 2 products from scratch for a big international company with over 35k employee (6-12 months developments). One of them is an app which is mandatory to use for all of the 35k employees. We passed all request from integration with Active Directory, SAP, GDPR, Russian legislation, Penetration tests and a lot of paperwork which are highly demanded if you are working with an international company.
Great question! This is a similar issue all enterprise-focused companies face, which I've experienced many times.
I'd recommend creating content that leverages your experience:
1. Create detailed case studies about each of your large projects, featuring the customers branding clearly. Seek permission before doing this,
2. Create white papers for each of your key learnings from the project. For example, I'd love to know how Russian law impacted your project - "Developing software that complies with Russian data protection law in 2019'
3. Create short blogs which summarise the white paper, ideally with a video. Offer the whitepaper as a download in exchange for an email.
4. Promote the blog posts on LinkedIn with paid advertising, aimed at your ideal customers.
Happy to jump on a call and discuss how I've successfully used to approach to win customers.