Business Development Associate

Business Development Associate
Sunstone Credit  ·  New York City
Location: Sunstone's New York City Office (Hybrid — Tue–Thu in-office)
Compensation: $125k+ (Base and Bonus)

About Us
Sunstone Credit is on a mission to revolutionize commercial solar finance.
 
Sitting at the intersection of climate, finance and technology, Sunstone is opening the door to a previously underserved segment in the solar industry by offering financing solutions that help businesses save money and reduce their carbon footprint by going solar.
 
Founded in 2021 by successful serial founders, Sunstone has a strong backing from top VC firms and financial institutions that position our company for explosive growth in 2026 and beyond.  
 
We have partners and customers that are diverse, and we are building a team that reflects that. Our team members collaborate and innovate from our HQ in NYC’s Flatiron District and every one of our colleagues shares in Sunstone’s success with meaningful equity ownership.
 
Climate change is the greatest challenge humanity has ever faced. We are doing our part to stop it. This is not just a job, it’s a mission – true believers only. Come join our team!

About the Role

Sunstone is seeking a Business Development Associate to join our team. Sunstone's partners are solar installers and developers selling solar systems to and installing solar systems for businesses. You will play a key role in expanding Sunstone’s commercial impact by owning and developing a portfolio of partner accounts. Your focus will be to deepen relationships, drive product adoption, and uncover new opportunities for mutual growth.

This role is ideal for a self-starter who thrives in ambiguity and is motivated to improve what exists rather than accept the status quo. You’ll bring a high level of ownership to your accounts, balancing strategic thinking with day-to-day execution. Success in this role requires hyper-responsiveness, exceptional organization, curiosity, and resilience.

You can expect significant autonomy in a fast-moving, evolving industry, with the opportunity to shape both your role and our partner strategy as Sunstone grows. Join us in building an agile, partner-focused, values-driven company.
 

Key Responsibilities:

1. Account Management:
   • Manage a high volume of simultaneous deals at various stages, maintaining accuracy and urgency across all of them — tracking every commitment, deadline, and follow-up.
   • Juggle competing priorities across dozens of active accounts daily, knowing when to escalate and when to execute independently.
   • Develop a deep understanding of each account's structure, priorities, and business objectives by asking thoughtful, sometimes challenging questions and probing beyond surface-level needs.
   • Proactively engage partners to ensure a seamless experience for new loan applications, coordinating with internal cross-functional teams to support the successful execution of Sunstone-approved projects.
   • Build and maintain strong, trust-based relationships with key stakeholders across each account.
   • Serve as the primary point of contact — ensuring questions and issues are addressed accurately and quickly via email, phone, or text (Sunstone number provided).
2. Account Development:
   • Identify opportunities for account expansion and increased product adoption, partnering closely with director-level BD team members to develop and execute growth strategies.
   • Leverage Sunstone's thought leadership — including webinars, best practices, and market insights — to deepen engagement with both new and existing partner contacts.

Qualifications

1. At least two years of professional experience in a B2B customer-facing role. Finance or solar background preferred but not required.
2. Proven ability to thrive in high-volume environments — you get energized, not overwhelmed, when the inbox is full and the phone won't stop.
3. Exceptional attention to detail even when moving fast — you catch the typo in the term sheet and the missed callback on a busy Friday.
4. Driven, resilient, and goal-focused. Unafraid to spend significant time calling, researching, and managing a large portfolio of accounts simultaneously.
5. Engaging, confident, and energetic, with the ability to create rapport and inspire action quickly.
6. Highly organized and responsive, committed to providing a great experience for partners while representing Sunstone.
7. Strong written and verbal communication skills — able to convey professionalism, personality, and brand identity via phone, email, and text.
8. Demonstrated commitment to mission-driven work.
9. Bachelor's degree or associate degree desired.