Senior Full Stack Engineer — Architect AI‑Driven Systems

Atos SE; Greater London; On-site; GBP 70,000 - 110,000; Full time

Benefits offered by this job

25 days annual leave

Life Assurance

Income Protection

Pension contribution matched up to 10%

Flexible benefits

Job summary

Atos SE is seeking a Senior Full Stack Engineer to design and deliver complex software across multiple tech stacks. You will collaborate with clients and internal stakeholders, guiding hands-on development while shaping architecture and delivery.

The role sits within our Gen AI practice, contributing to high-impact AI-enabled platforms and large-scale system migrations. You will work across technologies, translating requirements into robust solutions, mentoring peers, and driving end-to-end

Qualifications

• Solid understanding of maintainable code and software architecture.
• Experience working across multiple technology stacks.
• Strong knowledge of library-appropriate, strongly typed languages (C++, Java, C#, Go, Rust) and front-end frameworks.

Responsibilities

• Design, build, and deploy scalable, high-quality systems.
• Translate business and client requirements into technical solutions.
• Work directly with clients, moving quickly from concept to production.
• Lead by example through hands-on development.
• Contribute to architectural decisions across multiple teams.
• Support and mentor engineers while remaining involved in delivery.

Skills

Full stack development

Architectural design

Client communication

Hands-on leadership

Multi-stack experience

Mentoring engineers

Tools

C++

Java

C#

Go

Rust

Job description

Atos SE is seeking a Senior Full Stack Engineer to design and deliver complex software across multiple tech stacks. You will collaborate with clients and internal stakeholders, guiding hands-on development while shaping architecture and delivery.

The role sits within our Gen AI practice, contributing to high-impact AI-enabled platforms and large-scale system migrations. You will work across technologies, translating requirements into robust solutions, mentoring peers, and driving end-to-end