Head of Engineering (London)

Direct message the job poster from Aries Global

Aries is a rapidly-scaling, founder-led group of profitable software companies at the heart of the $50B+ cloud ecosystem , now transforming the landscape through a shared AI and growth infrastructure . We unify niche SaaS companies under a central platform that unlocks visibility, velocity, and value across our portfolio.

With a permanent capital base and ~$200M invested annually in profitable software, we’re not just chasing trends - we’re building enduring value.

The Role: Founding Head of Engineering

We’re looking for a Founding Head of Engineering to lead the charge in building our central technology platform - someone who thrives in high-feedback, fast-build environments and wants to have a lasting impact on an ambitious company from the ground up.

You’ll architect, build, and manage the team responsible for prototyping and deploying tools that integrate and supercharge performance across our SaaS group. From stitching together 3rd-party APIs to deploying AI agents that drive growth — this is a rare opportunity to shape both product and team from day one.

What You’ll Do:

• Build the Core Aries Platform: Drive the design and development of tools and systems that unify and scale portfolio operations.
• Lead Engineering Execution: Hire, grow, and mentor a central team of high-performing engineers (~20 over 12 months).
• Own Agent Development: Lead development of autonomous and semi-autonomous agents, especially for outbound and inbound GTM workflows.
• Collaborate Across Functions: Work closely with Product, Data, and AI teams to take ideas from concept to working product - fast.
• Integrate & Automate: Stitch together best-in-class tools and platforms via APIs and state machines, creating fast-feedback systems.
• Champion Engineering Excellence: Set technical standards, introduce best practices, and create a culture of velocity, ownership, and continuous learning.

What We’re Looking For:

• Proven track record in engineering leadership within high-growth B2B SaaS environments
• Strong builder: Able to go from 0→1 rapidly, with an eye for experimentation and iteration
• Technical breadth across backend, APIs, systems integration , and ideally some experience with AI workflows or agents
• Experience managing high-output engineering teams and shipping complex systems in production
• A hands-on leader who can write code when needed, but knows how to scale their impact through others
• Deep product sensibility and bias for impact; you’re excited by the intersection of product, growth, and engineering
• A systems thinker: able to map and execute across tools, data flows, and operational complexity

Why Join Aries?

• Join at the founding stage of a company with rocketship growth and deep resources
• Work with a world-class team of founders, engineers, investors, and operators
• Play a key role in shaping the technology stack and culture across a group that’s redefining how software businesses grow
• Access a platform that spans multiple profitable SaaS companies — the scale and impact potential is massive

Let’s Talk

If you're a builder at heart, with a vision for how engineering can transform business, we'd love to speak. This is more than a job — it's a chance to help architect the future of cloud software.

Reach out directly or apply here to start the conversation.

• Seniority level
  Director

• Employment type
  Full-time

• Job function
  Engineering and Management
• Industries
  Software Development

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