Software Engineer - AI, Cloud & Quantum-Safe Systems

Arqit; Belfast City District; On-site; GBP 55,000 - 90,000; Full time

Job summary

Arqit is expanding its engineering team in Belfast, UK, delivering world‑class quantum‑safe encryption solutions. You will join a close‑knit product squad, refine system designs with senior engineers, and apply AI tooling across the full software lifecycle.

Expect fast decision cycles, strong autonomy, and opportunities to mentor and grow. The role focuses on building scalable services, collaborating across teams, and delivering high‑quality software in a dynamic, global environment while

Qualifications

• Experienced building scalable enterprise software.
• Experience with cloud IaaS/PaaS environments.
• Practical use of AI tooling in the SDLC.
• Proficient in Java, Kotlin, Rust, Python or C++.
• Experience with containers and cross‑platform development.
• Knowledge of Linux environments is beneficial.

Responsibilities

• Join a fast‑moving product team delivering code to customers in weeks.
• Collaborate with architects and senior developers to refine designs.
• Apply AI tooling across design, coding, testing and deployment.
• Monitor production changes and resolve issues to ensure resiliency.
• Respond to issues from internal teams or customers.
• Work within an agile framework delivering value in short cycles.

Skills

Enterprise software

Cloud IaaS/PaaS

AI tooling in SDLC

Java

Kotlin

Rust

Python

C++

Containers

Linux

Cross-platform

Tools

Containers

Virtualisation

Linux

Job description

Arqit is expanding its engineering team in Belfast, UK, delivering world‑class quantum‑safe encryption solutions. You will join a close‑knit product squad, refine system designs with senior engineers, and apply AI tooling across the full software lifecycle.

Expect fast decision cycles, strong autonomy, and opportunities to mentor and grow. The role focuses on building scalable services, collaborating across teams, and delivering high‑quality software in a dynamic, global environment while