Chief Technology Officer (CTO) at High-Growth AI Start-up
Chief Technology Officer (CTO) at High-Growth AI Start-up

Chief Technology Officer (CTO) at High-Growth AI Start-up

London Full-Time 43200 - 72000 ÂŁ / year (est.) Home office possible
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At a Glance

  • Tasks: Lead tech development and scale our innovative AI start-up.
  • Company: Join a fast-growing AI start-up with 50,000+ active users and strong investor backing.
  • Benefits: Enjoy remote work flexibility, meaningful equity, and a competitive compensation package.
  • Why this job: Shape the future of technology in a values-driven culture with high impact and growth potential.
  • Qualifications: Experience in scaling teams and systems, with a strategic mindset for product development.
  • Other info: Remote-first position, ideally suited for candidates in European time zones or East Coast USA.

The predicted salary is between 43200 - 72000 ÂŁ per year.

We’re seeking a Founding Chief Technology Officer (CTO) to join a fast-growing, well-funded AI start-up. With 50,000+ active users already and backing from leading investors, we’re entering an exciting new phase and we’re looking for a world-class CTO to drive our technology forward.

This is more than a technical leadership role; it’s a rare opportunity to shape the architecture, team, and product DNA of a company.

About the Role: As our Chief Technology Officer, you’ll be responsible for leading the development and scaling of our technology stack, shaping our engineering culture, and helping guide the strategic direction of the business alongside the CEO and founding team. This is a founding-level position where your decisions will directly influence the success and trajectory of the company. We’re not looking for someone to maintain legacy systems; we’re looking for a builder who can lay down the tracks as the train accelerates.

Key Challenges & Responsibilities:

  • Defining and Executing a Modern, Future-Proof Tech Stack: Modern, scalable architectures tailored to real-time AI applications. Own the full stack: from backend and infrastructure to AI model serving and frontend frameworks. Select and implement the right tools, cloud platforms, CI/CD systems, and monitoring solutions.
  • Building and Leading a World-Class Engineering Team: Recruit, mentor, and retain exceptional engineers across AI/ML, full stack, DevOps, and product engineering. Instil a high-performance culture rooted in accountability, creativity, and ethical innovation. Design org structure, hiring plans, and team processes for long-term growth and execution.
  • Strategic Product & Technical Leadership: Partner closely with the CEO and other founders to influence product direction, prioritise roadmaps, and communicate plans to investors and stakeholders. Bring a product-first mindset: balance innovation with usability, and ensure tech decisions align with business goals and user experience. Represent the tech vision externally as needed (e.g. investor discussions, industry events).

What We’re Looking For:

  • Engineering & Leadership Experience: You’ve scaled teams and systems through significant growth phases (from early product to tens or hundreds of thousands of users). Some experience in building consumer products would be ideal. Proven ability to lead and inspire teams in fast-paced, high-growth environments.
  • Product & Strategic Thinking: You’re not just a technologist; you’re a strategic thinker who understands the “why” behind the product. You think holistically about user experience, conversion, retention, and how tech drives engagement. Experience working in or adjacent to creator platforms, entertainment tech, or consumer media is a major plus.

Why This Role?

  • Massive Growth Opportunity: Join a start-up at an inflection point, with strong early traction and ample capital to scale.
  • Category-Defining Mission: High Agency, High Impact: You’ll shape the entire engineering org from day one, with full ownership of systems, hiring, and culture.
  • Meaningful Equity: As a founding exec, you’ll receive a significant equity stake in a company with real product-market fit and ambitious long-term goals.
  • Values-Driven Culture: We care about what we’re building and why. Every decision — product, people, and platform — is made with integrity and clarity of mission.

Location: Remote-first, with preference for European time zones or East Coast USA

Compensation: Significant Equity - Plus substantial base and package, inline with other Leading Venture Backed Businesses.

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Contact Detail:

Blockchain 121 Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Chief Technology Officer (CTO) at High-Growth AI Start-up

✨Tip Number 1

Network with professionals in the AI and tech start-up space. Attend industry events, webinars, and meetups to connect with potential colleagues and investors. Building relationships can give you insights into the company culture and expectations.

✨Tip Number 2

Showcase your leadership experience by discussing specific examples of how you've scaled teams and systems in previous roles. Highlight your ability to inspire and mentor engineers, as this is crucial for a CTO position.

✨Tip Number 3

Familiarise yourself with the latest trends in AI and consumer technology. Being well-versed in current technologies and methodologies will help you articulate your vision for the tech stack and product direction during discussions.

✨Tip Number 4

Prepare to discuss your strategic thinking process. Be ready to explain how you balance innovation with usability and how your tech decisions align with business goals. This will demonstrate your holistic understanding of the role.

We think you need these skills to ace Chief Technology Officer (CTO) at High-Growth AI Start-up

Technical Leadership
AI/ML Expertise
Full Stack Development
Cloud Platforms Management
CI/CD Implementation
Team Building and Mentoring
Strategic Product Development
User Experience Design
High-Performance Culture Instillation
Stakeholder Communication
Agile Methodologies
Data-Driven Decision Making
Scalability Solutions
Innovation Management
Ethical Technology Practices

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience in scaling teams and systems, particularly in high-growth environments. Emphasise any relevant experience in AI/ML and consumer products to align with the company's needs.

Craft a Compelling Cover Letter: In your cover letter, express your passion for technology and leadership. Discuss how your strategic thinking aligns with the company's mission and how you can contribute to shaping their engineering culture.

Showcase Relevant Projects: Include specific examples of projects where you've defined and executed modern tech stacks or led engineering teams. Highlight your role in product development and how it drove user engagement and retention.

Prepare for Technical and Strategic Questions: Anticipate questions about your technical expertise and strategic vision. Be ready to discuss how you would approach building a world-class engineering team and your thoughts on future-proofing technology in a fast-paced environment.

How to prepare for a job interview at Blockchain 121

✨Showcase Your Vision

As a CTO, it's crucial to demonstrate your strategic thinking. Be prepared to discuss your vision for the technology stack and how it aligns with the company's goals. Highlight your experience in building scalable systems and how you plan to lead the engineering team towards that vision.

✨Emphasise Team Building Skills

This role requires not just technical expertise but also strong leadership abilities. Share examples of how you've successfully recruited, mentored, and retained top talent in previous roles. Discuss your approach to fostering a high-performance culture and how you plan to instil that within the new team.

✨Demonstrate Product Understanding

Be ready to talk about your experience with consumer products and how technology can enhance user experience. Discuss specific instances where your tech decisions positively impacted product engagement, conversion, or retention. This will show that you understand the 'why' behind the product.

✨Prepare for Strategic Discussions

Since you'll be working closely with the CEO and other founders, prepare to discuss how you would influence product direction and prioritise roadmaps. Think about how you would communicate technical plans to investors and stakeholders, showcasing your ability to represent the tech vision externally.

Chief Technology Officer (CTO) at High-Growth AI Start-up
Blockchain 121
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