Head of Engineering

Location

Lviv & London (hybrid / flexible)

Who are we?

Pebbles Ai is an AI-native product company building the most advanced Go-To-Market Operating System (GTMOS™) for B2B teams, powered by proprietary Neurosymbolic AI.

We are an Anglo-Ukrainian company, built between Lviv and London, combining world-class engineering with sharp commercial execution. Our ambition is bold: to build a category-defining Future of Work company and reach an IPO by 2031, following the path of Grammarly, MacPaw, and GitLab.

Despite being founded in 2023, Pebbles Ai is already featured by Forbes Innovation, TechRadar, Tech.eu, accelerated by Mountainside Ventures, and backed by Google for Startups AI.

What do we do?

We are building a Go-To-Market OS that unifies revenue, sales, marketing, and operations workflows into one intelligent platform.

At the core is a production-grade Neurosymbolic AI engine, designed specifically for GTM workflows not generic LLM wrappers, not research toys, but AI that works in real businesses.

The product already exists. The AI engine exists. Real users are onboarded. Early revenue is coming in.

Now we scale.

Why do we do it?

Because B2B teams are drowning in disconnected tools, dashboards, and manual decision-making.

Our mission is to replace fragmented GTM stacks with a single intelligent system that:

Understands business context Explains decisions (not just predicts) Drives real revenue outcomes

We’re not building AI for AI’s sake. We’re building infrastructure for how modern B2B companies operate.

How do we do it?

Deep, long-term R&D (2.5+ years already invested) A Neurosymbolic AI approach that balances reasoning + ML Tight integration between AI services and core backend Strong engineering standards: observability, scalability, reliability Product-led growth mindset from day one

This is a real product company, not an agency and not a lab.

Who works for us?

You’ll join a small, elite, senior team:

• Core product & engineering (9 people)
• 3 AI Engineers 2 AI Researchers 1 AI Director 1 Frontend Lead 1 QA Lead 1 Technical Product Lead
• With ~15 people including external partners.
• No bureaucracy. No dead weight. High trust, high standards.

Why is there a vacancy?

We’ve reached the point where scaling the platform requires a senior technical owner.

The foundations are built. Now we need a Head of Engineering who can:

Own execution Make hard architectural decisions Grow into the CTO role through real ownership, not a title gift.

Who are we looking for?

A senior engineering leader who wants to:

Build something meaningful Own outcomes, not just tickets Grow into a CTO role through execution Leave a legacy, not just collect a paycheck. This role is not for people who want comfort, low pressure, or just management.

What professional skills are important to us?

Must-have:

• Senior engineering leadership experience (Head of Eng / EM / Tech Lead)
• Strong system architecture judgment
• Proven delivery under pressure
• Hands-on backend experience with Java Spring Boot or Python
• Ability to confidently work in both stacks
• Production cloud experience (GCP, Kubernetes, CI/CD, observability)
• Excellent communication skills and fluent English
• Ownership mindset, calm decision-making, low-ego collaboration

Nice-to-have:

• AI-native / LLM-powered product experience
• Vector databases, embeddings, retrieval systems
• Domain-Driven Design in production

• Startup or scale-up background

What will you do on the project?

From day one:

• Own engineering delivery and roadmap
• Ensure platform stability and scalability
• Make final architecture decisions
• Define engineering standards (testing, security, releases)
• Balance speed vs long-term maintainability
• Stay close to the code when it matters

Platform & AI:

• Own backend architecture (Java + Python services)
• Define scaling strategy (monolith vs microservices)
• Partner with AI team on production-grade AI features
• Ensure AI is reliable, explainable, and business-driven

Leadership:

• Work directly with the CEO and investors
• Translate complex tech decisions into clear business language
• Support customer implementations and integrations

Initial role split:

• 70% hands-on execution, 20% technical strategy, 10% leadership
• Over time transition toward full CTO scope.

What conditions do we offer?

• Competitive early-stage startup salary
• Rapid salary growth post-VC round (up to 2× market)
• Annual bonus tied to revenue and retention
• Equity (above market)
• Direct access to top-tier investors and mentors
• Company-covered travel to London
• Protection from military drafting (documentation support)
• Clear, explicit path to CTO

What is our hiring process?

Fast, human, and respectful:

1. Intro conversation

2. Deep technical & leadership discussion

3. Final alignment with CEO

4. Offer