About the role#
Leadbay is building the first MCP-native company. We help sales teams move beyond generic workflows by building custom, agentic systems that qualify leads and improve efficiency. As a Forward Deployed Engineer, you will work directly with our founders to land accounts, understand growth strategies, and build the specific tools our customers need to succeed. This is a role for those who want to build alongside founders and gain experience in the YC ecosystem.
What you'll do#
- Land small accounts through 30-minute calls and demonstrate how to build previously impossible workflows.
- Work with large accounts to understand their growth strategy and build custom workflows in their offices.
- Build necessary features and tools within our MCP product and acquisition funnel.
- Use MCP to improve your own efficiency and serve as an example of an effective sales rep.
- Create agentic systems that help customers scale their addressable market and lead qualification.
- Spend your first 90 days meeting users, building a library of successful workflows, and developing your own skillset to engage with larger customers.
What you'll need#
- Technical capability and social skills. You must be comfortable speaking with executives and writing Python code.
- Experience with Python and a demonstrated interest in building AI skills.
- Ability to communicate effectively with CEOs and C-level leadership.
- A preference for shipping functional work quickly over waiting for perfect solutions.
- A proactive mindset, as you will need to make judgment calls and find answers independently.
- Academic background in Computer Science, Business Administration, Data Science, Electrical Engineering, Mechanical Engineering, Industrial Engineering, Marketing, or Operations Management.
Location & details#
- This is an on-site, full-time internship based in San Francisco, California.
- The position operates on a rolling term.
- Compensation is 1.5K to 2K EUR per month.
- Applicants must be US citizens or hold a valid visa.
About Leadbay (YC F25)
Leadbay provides lead qualification tools for agentic workflows. The company focuses on identifying and qualifying leads for small and medium-sized businesses that have low data or signal. Clients include L'Oreal, Saint-Gobain, and Nespresso B2B. The firm is based in San Francisco and maintains a team of 27 employees.
How to get in at Leadbay (YC F25)
Securing an internship at Leadbay requires speed because the team is small and roles fill quickly. Intern Insider sends an instant alert the moment a role matching your target is published anywhere, so you apply among the first, as early applicants get seen before the pile grows. This gives you a meaningful edge when competing for limited spots at a lean startup. You can also improve your chances by connecting with the people actually making the hiring decisions. Intern Insider surfaces the recruiters behind the company's roles so you can reach out directly to ask about the role or a referral, which materially improves response rates. A direct message often cuts through the noise of a standard application queue.


