It’s About You.

Big ideas are only as good as the people behind them - that’s why UFirst, an earliest stage accelerator, is about you and your unique needs. The 8-week program backs each UFirst Fellow with dynamic capital, access to pivotal startup resources, personalized mentorship, and curated workshops - all while working from our Boston office!

Apply Now!

How We Help Bold Earliest Stage Founders


• Funding ranging from $30K to $500K depending on your unique needs
• Showcase your company and get access to top investors across the country


• Right expertise, from the right people, at the right time
• Paired with experienced mentors
• Join our Core Community and engage in future invite-only Underscore events


• Resources to set your company up for success
• Office space in Boston
• Discounted services and enterprise software
• Cloud credits


• Workshops and events with leading operators from our Core Community
• Practical case studies and lessons via Startup Secrets
• Board meeting with the Underscore investment team

Are you the bold founder we’re looking for?

Whether you’re a student hoping to spend your summer working on your idea, thinking about leaving your current job to start something new or wanting to best position your company before raising your Series A, UFirst is for you! Recognizing that everyone’s journey starts somewhere, Underscore is here to help you build and scale.

Do You Want to…

  • Build a compelling value proposition & positioning
  • Hire A+ talent and build a strong organizational culture
  • Craft a game-changing business model
  • Perfect your go-to-market strategy
  • Develop your product roadmap for the next stage
  • Learn funding strategies to go the distance
  • Strengthen yourself as a leader

UFirst Accelerator

Program Timeline

Frequently Asked Questions

Does my company need to be incorporated to participate?

Yes, all companies need to be incorporated as a c-corp.

Who is the ideal UFirst Fellow?

We’re looking for Boston-based, uniquely qualified founders who are self-aware and have a can-do attitude. Whether still ideating or preparing for their Series A, UFirst’s dynamic approach tailors the experience to you and your company’s stage.

I have applied, now what?

With applications being reviewed on a rolling basis, an Underscore team member will reach out to engage further if we see a potential fit. In the meantime, feel free to check out our Core Events and continue building with guidance from Startup Secrets!

Apply Now!