Senior Platform Engineer

Senior Platform Engineer

Join a growing tech business at the forefront of secure digital innovation. This role sits at the heart of building and evolving high-performance platform capabilities that power mission-critical systems across Defence and National Security.

Role Overview

Location: Hampshire

Package: Competitive salary + benefits

Industry: Defence & Secure Technology

What You’ll Be Doing

• Designing and delivering scalable, secure, and resilient platform solutions across cloud and on-premise environments.
• Building and maintaining CI/CD pipelines, observability tools, and automation frameworks to drive consistent, high-quality delivery.
• Working closely with SRE and operations teams to ensure system reliability, performance, and availability.
• Acting as a subject matter expert for platform technologies, guiding architectural decisions and mentoring engineers.
• Evaluating and adopting new technologies to strengthen platform innovation and long-term scalability.
• Supporting governance, incident response, and strategic platform planning across hybrid environments.

Main Skills Needed

• Proven background in platform engineering, DevOps, or infrastructure development.
• Hands-on experience with Kubernetes, cloud platforms (AWS, Azure, or GCP), and Infrastructure as Code (Terraform, Ansible, etc.).
• Strong knowledge of CI/CD tooling, monitoring, and automation practices.
• Understanding of platform security, compliance, and operational resilience.
• Confident communicator with experience collaborating across technical and business teams.
• Eligibility for SC clearance (UK sole nationals only) — DV clearance desirable.

What’s in It for You

• Work in a high-trust, secure environment where innovation and collaboration drive everything.
• Opportunity to shape next-generation platforms in the Defence and Security space.
• Supportive culture built around agility, quality, and inclusivity.
• Access to cutting-edge tools and the backing of a globally recognised technology group.
• Hybrid working with flexibility and genuine career progression.

Think it could be a fit? We’d love to hear from you.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

By applying you are confirming you are happy to be added to the Addition Solutions mailing list regarding future suitable positions. You can opt out of this at any time simply by contacting one of our consultants.