Founding Sales Development Representative (SDR)

About Reflex

Reflex helps companies build, deploy, and manage custom applications with AI. Teams securely connect their company data, build on our open-source Python framework, and deploy applications to their users.

Our customers use Reflex to modernize legacy software, build operational tools, and turn company data into applications their teams use every day.

We’re hiring a Founding SDR to help turn that demand into qualified enterprise conversations. You’ll work directly with our CEO and founding Account Executive, with meaningful ownership and room to grow as we build the sales team.

Reflex’s last funding round valued the company at nine figures.

Our founders and team

Reflex was founded by Alek Petuskey and Nikhil Rao with a simple goal: make it easier to build web apps in Python. An internal experiment grew into an open-source framework that now powers over a million applications. Today, we’re bringing that foundation to enterprises so teams can build, deploy, and manage critical applications in one place.

Our founding team includes open-source maintainers, IOI medalists, and people who helped build developer-tool unicorns from their early days. We build in the open and use feedback from our community to shape the product. As our Founding SDR, you’ll work closely with the founders and sales team to turn this adoption into enterprise relationships.

The role

You’ll execute and improve our enterprise prospecting process: research accounts, identify the right people, start conversations, and follow through until qualified prospects meet with our team.

Our founders and sales team will provide the target customer profile, initial account priorities, messaging, and qualification criteria. You’ll own consistent execution and bring back insights that help us improve the approach.

Your prospects will come from inbound interest in our open-source framework and free product, conferences and executive events, referrals, and target account lists developed with the team.

This is a full-time, fully in-person role at our San Francisco office.

What you’ll do

• Run daily prospecting through cold calls, email, and LinkedIn.
• Research target accounts and identify business, operations, IT, and data leaders with relevant needs.
• Follow up promptly with inbound prospects, event contacts, and referrals.
• Qualify interest against clear criteria and book meetings with our sales team.
• Own scheduling, reminders, and rescheduling so booked meetings actually happen.
• Keep contact history, outcomes, and next steps accurate in our CRM.
• Track activity and conversion, share what prospects are saying, and test improvements with the team.
• Use AI and sales tools to accelerate research and execution while keeping outreach accurate and personal.

What we’re looking for

• Around two years of SDR, BDR, or comparable outbound prospecting experience.
• A track record of consistent execution and qualified meeting generation.
• Comfort picking up the phone and starting conversations with senior business leaders.
• Clear, concise writing and the curiosity to ask good questions.
• Strong organization and follow-through across multiple prospects and conversations.
• Experience using a CRM and working within a defined sales process.
• Coachability, persistence, and a willingness to learn from results.
• Someone who enjoys prospecting and wants to become excellent at sales development.

Experience selling B2B software is helpful. You don’t need to be an engineer, but you should be interested in AI and comfortable learning how customers use software to solve business problems.

Your first 30, 60, and 90 days

• First 30 days: Learn the product, customer use cases, and qualification criteria with the founders and founding Account Executive. Shadow sales conversations, practice the pitch, research your initial accounts, and launch your first outreach sequence with feedback from the team.
• By 60 days: Own daily prospecting and follow-up for your assigned accounts and inbound leads. Run outreach across phone, email, and LinkedIn; qualify conversations; and manage meeting handoffs with clear CRM notes. Review replies, attendance, and opportunity conversion with the team to identify what is working.
• By 90 days: Own a repeatable campaign for an agreed customer segment. Document the messaging, objections, follow-up steps, and qualification signals that generate useful conversations. Bring a results-based recommendation for the next campaign and a playbook a future SDR can use.

We’ll agree on activity and qualified-meeting targets during onboarding and adjust them as we learn from actual conversion data.

How we’ll measure success

Your primary outcomes are qualified meetings that happen and progress into real sales opportunities.

We’ll set clear ramp expectations and review outreach activity, replies, meeting attendance, and opportunity conversion together. You’ll know what success looks like and receive direct coaching from the founders and sales team.

Ownership and growth

You’ll help establish the habits and processes that future SDRs use as the team grows.

As you demonstrate results, you’ll have room to own campaigns and customer segments, improve our messaging and prospecting process, and help onboard future teammates. Your conversations will directly inform how we understand customers and bring Reflex to market.

If you want to work closely with founders, see the impact of your work, and earn increasing responsibility in an early sales organization, we’d love to hear from you.