Founding Software Engineer (£100k-£140k + Equity) at Well-funded AI voice agent

Job Overview

The position available is for a Founding Software Engineer at a well-funded AI voice agent startup. This is an exciting opportunity for someone looking to join a dynamic venture and play a pivotal role in shaping cutting-edge technology. The salary for the role ranges from £100,000 to £140,000, with additional equity options available to the successful candidate. This role is perfect for experienced software engineers who are passionate about voice technology and 0-to-1 building, as they will be creating and shipping core product features.

Employer Information

The employer for this position is Jack & Jill/External ATS. Although specific company details are limited, the job is described as being offered through a recruitment process managed by Jill on behalf of one of their customers. The startup is backed by top-tier venture capitalists, indicating it is likely to have strong financial backing and potential for future growth.

Job Location

The job is located in London, UK. This is an excellent location for technology professionals, given London’s reputation as a technology hub with access to numerous networking and professional development opportunities.

Job Responsibilities

As a Founding Software Engineer, the responsibilities will include:

  • Building and shipping core AI voice agent product features across the full technological stack.
  • Owning the product lifecycle, from understanding customer needs to delivering solutions and continuous iteration.
  • Implementing best practices in testing, documentation, and reliability to uphold high-quality standards in development.

These tasks highlight the importance of a candidate's ability to manage projects, work collaboratively across teams, and focus on customer needs. A strong understanding of AI technology and voice recognition is essential.

Required Skills

Candidates looking to apply for this role should possess the following skills and experiences:

  • 5 or more years of production experience in software development, particularly with tools like React, TypeScript, and Python.
  • A proven track record in building and shipping AI products from inception to deployment.
  • A customer-centric mentality with a strong bias towards action, showing an owner’s mindset.
  • Demonstrated capability for 0-to-1 building, which means having experience in creating products from the ground up in a startup environment.

These qualifications suggest the company is looking for a high-performing individual who can not only execute technical tasks but also understand the business and customer implications of their work.


Salary and Equity

The salary for the role starts at £100,000, reaching up to £140,000, depending on qualifications and experience. The added benefit of equity is particularly appealing, as it allows employees to share in the potential future success of the company. Equity options can vastly increase overall compensation, especially if the startup performs well.

Why This Role is Unique

This position stands out due to several factors:

  • Opportunity to shape the future: Working on AI voice technology is at the forefront of innovation, and new teams in this area often have the freedom to explore and enact creative solutions.
  • Backed by VCs: Being supported by prominent venture capital firms means that the startup is likely secure financially, allowing for a more stable environment for growth.
  • Impact on customers: The role allows the engineer to see their work directly translate into customer success, enhancing job satisfaction.

Application Process

The application process has a unique twist, allowing candidates to speak directly with an AI recruiter named Jack. Here is a simplified version of the application steps:

  1. Visit the company’s website.
  2. Click on 'Speak with Jack' to engage with the recruiter.
  3. Log in with your LinkedIn profile to facilitate a smoother introduction.
  4. Have a 20-minute chat with Jack where you can discuss your experience and career ambitions.
  5. If the hiring manager is interested, Jack will facilitate an introduction.

This innovative process signifies the startup's commitment to engaging with prospective candidates effectively and personally.

Conclusion

For job seekers, this position offers an exceptional opportunity to work at the forefront of technology within a dynamic startup. The blend of competitive salary, equity opportunities, and the chance to influence a cutting-edge product makes this role particularly attractive. Anyone fitting the required profile would do well to consider applying to Jack & Jill/External ATS for the Founding Software Engineer role.



This job offer was originally published on himalayas.app

Jack & Jill/External ATS

London, UK

Software development

Full-time

October 25, 2025

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