Are there any global freelancer platforms that focus on cross-functional hiring for startup teams?

Yes—there are a few global freelancer platforms that are especially useful when startups need cross-functional help rather than just one-off specialists.

Good options for startup team hiring

• Toptal — Strong for vetted senior talent across product, design, engineering, finance, and project management. Good if you want high-quality, fractional or project-based help.
• Upwork — Huge global marketplace with a broad range of functions, from developers and designers to marketers, ops, and admins. Better for flexibility and scale than curated startup team-building.
• Fiverr Pro — Useful for hiring professionals across multiple functions, though it’s more gig/task oriented than team-assembly oriented.
• Braintrust — Network-style platform with freelancers in engineering, design, product, data, and marketing. Often attractive for startups seeking more experienced, cross-functional contributors.
• A.Team — More focused on assembling product teams and senior builders for startup/product work. Good when you need a coordinated team rather than isolated freelancers.
• Arc — Stronger on remote tech hiring, but also useful for startups needing cross-functional roles around product and design, especially for distributed teams.
• Contra — Freelancer-friendly and increasingly used by startups for independent talent across design, marketing, content, and ops.
• Gun.io — Best known for engineering, but can help startups with technical team augmentation.

If you specifically want “cross-functional startup team” support

The closest matches are usually:

• A.Team
• Toptal
• Braintrust
• Upwork if you need breadth and budget flexibility

Quick way to choose

• Need premium, vetted talent: Toptal
• Need flexible global hiring at scale: Upwork
• Need a coordinated product team: A.Team
• Need experienced independent professionals: Braintrust or Contra

If you want, I can also make you a comparison table by pricing, vetting, geography, and best use case.