Founding Sales Development Representative at VC Backed Startup

Founding Sales Development Representative at VC Backed Startup (£40-80K OTE)

Jumpstart, London, England, United Kingdom

Accelerate your sales career at a startup. At Jumpstart, we help ambitious salespeople land roles at the UK’s most exciting VC-backed startups and ensure they thrive in their roles.

This isn’t just another SDR job. As a Founding SDR
, you’ll join a startup at a critical stage, working directly with founders or early sales leaders to shape how sales gets done. You’ll get real ownership from day one, learn fast, and accelerate your sales career.

Why Jumpstart?

• Work with high-growth, VC-backed startups – connect directly with the UK’s most exciting startups.
• Chat directly with founders & sales leads – get fast responses and direct outreach from founders who are actively hiring.
• 1:1 interview training & support – tailored prep with startup sales leaders so you can go into every interview with confidence.
• Community & mentorship – join a network of Jumpstart alumni and mentors to help you smash targets and accelerate your career once in role.

What you’ll do:

While the exact role varies by startup, typical Founding SDR responsibilities include:

• Build and own the top of the sales funnel: prospecting, outreach, and qualifying leads.
• Work directly with founders/sales leads to shape messaging and sales playbooks.
• Learn fast, experiment, and adapt – there will be no rigid playbooks, your ideas will directly influence how sales is done.
• Play an integral role in a startup’s growth in an environment where every new lead is a big win.
• Grow into more senior roles as the business scales (i.e. Account Executive, Account Manager, or Sales Lead).

Is this you?

We’re looking for people who:

• Have 1–3 years of sales experience in tech/startups
  .
• Are motivated by exceeding targets & can demonstrate how you’ve done this before.
• Are confident speaking with decision‑makers and can build rapport quickly.
• Are highly ambitious & looking for a career that gives you real ownership.

Extra points if you’ve:

• Worked in a startup or high‑growth environment before.
• Have side hustles, projects or other achievements that show your drive.

The important stuff

• Average base salaries
  : £40–80K OTE (depending on startup & role seniority).
• Startups
  :
  Seed to Series A, with ~50% of roles not advertised elsewhere
  .

Need convincing? Hear from our alumni.

How it works

• Apply in under a minute on our website.
• Short virtual interview with the Jumpstart team.
• Create your profile & get exclusive access to high‑growth startup sales roles.

On average, it takes ~4 weeks to land an offer and you can do the process alongside your current role.

👉 Want to be a Founding SDR at one of the UK’s most exciting startups?

Apply today and we’ll get you in front of the right founders, fast.