Sales Development Representative (Internship)

About Lumen Energy

Lumen Energy is building the transaction platform for the electric era. We partner with commercial real estate owners to transform underutilized rooftops into reliable, long-term income streams. Through our proprietary Lux Engine, we deliver investment-grade analysis, foster transparent competition among solar and battery developers, and provide white-glove service. Our platform enables owners to unlock predictable ancillary revenue, achieve sustainability goals, and scale clean energy across their portfolios without disrupting their core business. We collaborate with leading institutional commercial real estate firms and are backed by prominent investors. Our team comprises professionals from diverse backgrounds, united by a mission to power the built world with profitable clean energy.

Responsibilities

• Prospect and research target accounts and contacts; assist in refining our Ideal Customer Profile (ICP).
• Execute daily multi-channel outbound outreach, including cold calls, emails, and LinkedIn messages.
• Manage and execute AiSDR campaigns (setup targets, messaging variants, launches, monitoring, and iteration).
• Lead creative outreach experiments (A/B testing subject lines, openers, CTAs, sequences, personas); document results and recommend future tests.
• Qualify inbound and outbound responses, schedule meetings, and provide context-rich handoffs to the sales team.
• Maintain accurate records of activities, outcomes, and notes in HubSpot; ensure data cleanliness and organization.
• Collaborate with Sales and Marketing teams to improve messaging, objection handling, and outbound templates.

What You Bring

• Strong written and verbal communication skills, with the ability to write concise, personalized outreach.
• Comfort with cold calling and resilience in the face of rejection.
• High sense of ownership, reliability, and follow-through; ability to operate with minimal supervision.
• Highly organized and detail-oriented; disciplined in tracking work and results.

Nice to Have

• Experience with HubSpot (or other CRM), sequencing tools, and list-building/research workflows.
• Familiarity with LinkedIn Sales Navigator.
• Familiarity with the latest AI technologies (e.g., Claude, AiSDR, Notion AI).
• Interest in clean energy, commercial real estate, or B2B sales.

Role Details

• Internship (part-time or full-time).
• Location: Remote (US) or NYC preferred.
• Start Date: ASAP (flexible).