Lead NodeJS Engineer

Title: Lead Backend Engineer (Nodejs)

Salary: Up to £90,000 D.O.E

Location: Belfast (2 days on site)

Are you a Lead Engineer ready to take on more technical leadership and help shape the future of AI-driven software?

if so...

iO Associates is exclusively working with a rapidly scaling AI consultancy headquartered in Belfast that's building secure, high-performance solutions for clients across government, defence, and industry. They're at the forefront of AI innovation, developing platforms that bring trusted, explainable AI into real-world, mission-critical environments.

They're now looking for a Lead Backend Engineer to head up a small, high-performing team, setting standards, driving design decisions, and mentoring others, while staying hands-on with development.

What You'll Be Doing

Lead and mentor a talented backend team, setting coding and design standards.

Develop and maintain scalable backend services and APIs in Node or Python.

Collaborate with cross-functional teams to translate complex requirements into technical solutions.

Ensure code quality, reliability, and performance across all services.

Shape architecture decisions and influence the roadmap for AI-driven products.

What You'll Bring

5+ years of backend development experience with Node.js or Python.

Strong grasp of scalable server-side architecture and cloud-native design.

Proven ability to mentor engineers and lead technical delivery.

Familiarity with AI technologies or interest in working within the AI/ML space.

Excellent communication skills and a collaborative mindset.

Must be eligible for SC Clearance.

Our client has a 2 stage interview process, if you're interested in this role or know anyone who would be, then please apply with an updated CV and reach out to a. methula@io associates.co. uk