Technical Lead, AI Email App - Build Reliable AI Workflows

ActAI; Greater London; On-site; GBP 100,000 - 140,000; Full time

Job summary

ActAI is seeking a Technical Lead, AI Email App, to own the engineering layer that turns AI capability into a reliable product. You will shape architecture across backend services, APIs, and client applications, while leading a small team of senior engineers.

This hands-on leadership role keeps you close to the code, making critical architectural decisions and ensuring fast, reliable, and coherent systems as they scale. Candidates should thrive on ownership and shipping impactful features.

Qualifications

• Significant experience leading application or product engineering for complex systems.
• Hands-on background building and shipping backend systems used in production.
• Experience building AI-powered products or systems that integrate with modern ML/LLM capabilities.

Responsibilities

• Own the application engineering strategy and execution across backend, mobile, and desktop.
• Design reliable systems for AI-powered workflows, including state, orchestration, tool use, retries, fallbacks, and failure handling.
• Build the APIs and abstractions that connect AI systems to real-world product experiences.
• Lead a small, senior engineering team and raise the technical bar through design reviews, code reviews, and hands-on mentorship.

Skills

Lead engineering

Backend systems

AI/ML experience

Technical judgment

Tools

APIs design

Observability

Job description

ActAI is seeking a Technical Lead, AI Email App, to own the engineering layer that turns AI capability into a reliable product. You will shape architecture across backend services, APIs, and client applications, while leading a small team of senior engineers.

This hands-on leadership role keeps you close to the code, making critical architectural decisions and ensuring fast, reliable, and coherent systems as they scale. Candidates should thrive on ownership and shipping impactful features.