Lead Technical Architect

TN United Kingdom; Croydon; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading technical consultancy is seeking a Lead Technical Architect to design and implement advanced cloud infrastructure solutions. The ideal candidate will have expertise in cloud security, AWS, and microservices, and will provide technical leadership. The role offers flexibility with hybrid working options, competitive salary, and a supportive environment for career progression.

Benefits

Flexi-time

Hybrid working

Learning & Development budget

Social events

Matched pension and healthcare

Qualifications

• Experience designing large-scale cloud systems, especially AWS.
• Extensive knowledge of cloud security architecture.

Responsibilities

• Lead design of cloud-based systems using AWS and microservices.
• Develop security architectures ensuring compliance with regulations.

Skills

Cloud Security

Leadership

Communication

Java

Docker

Kubernetes

Event-Driven Architecture

CI/CD

Education

AWS Certifications

TOGAF

Tools

Terraform

CloudFormation

Prometheus

Grafana

ELK Stack

Job description

Lead Technical Architect

Bristol, UK ● Bromley, UK ● Cheltenham, UK ● Croydon, UK Req #1104 09 May 2025

About us:

We are the Information Intelligence Group (IIG) of CACI UK, a specialist technical consultancy providing bespoke solutions to solve complex operational problems. Due to growth within our Central Government business, we are seeking an experienced Technical Architect.

Role Location:

You can work from any of our 6 UK offices (including Bristol, Cheltenham & London) or from home; regular visits to our London team are required.

About the Role:

We seek a highly skilled Lead Technical Architect with expertise in cloud-based architectures. You will design, implement, and oversee advanced cloud infrastructure solutions for mission-critical systems, leveraging your knowledge of security architecture on cloud platforms to provide technical leadership in building scalable, secure, and resilient cloud-native systems based on AWS, Kubernetes, Kafka, microservices, Java, and event-driven design.

Key Responsibilities:

1. Cloud Architecture Design: Lead the design of cloud-based systems using AWS, microservices, event-driven architectures, and serverless computing to meet business needs.
2. Cloud Security: Develop and implement security architectures ensuring data protection, regulatory compliance (e.g., GDPR, HIPAA), and industry best practices (AWS IAM, encryption, VPC, monitoring, auditing).
3. Containerisation & Orchestration: Architect and oversee Kubernetes environments for high availability, scalability, and fault tolerance.
4. Event-Driven Systems: Lead the design of Kafka-based messaging frameworks for real-time data processing across distributed microservices.
5. Microservices Architecture: Oversee development of Java-based microservices, establishing best practices for modularity and scalability.
6. Technical Leadership: Provide mentorship and guidance to architecture and development teams.
7. Security & Compliance: Ensure architectures comply with industry regulations (GDPR, HIPAA) and security policies.
8. CI/CD & Automation: Promote CI/CD pipelines, infrastructure as code (Terraform, CloudFormation), and automation.
9. Stakeholder Collaboration: Work with DevOps, engineering, product management, and stakeholders to align architectural strategies.
10. Performance & Cost Optimization: Drive performance tuning, cost management, and resource optimization strategies.
11. Risk Management: Identify and mitigate technical risks.
12. Documentation & Standards: Maintain architectural standards, design patterns, and documentation.

The Fit:

Ideal candidates will have experience in designing and implementing large-scale cloud systems, especially AWS, with skills including:

• Extensive cloud security architecture knowledge (IAM, network security, encryption)
• Proficiency with Docker and Kubernetes
• Experience with Kafka and event-driven architectures
• Strong Java backend development background
• Knowledge of CI/CD, infrastructure as code (Terraform, CloudFormation)
• Excellent communication and leadership skills
• Experience with monitoring tools (Prometheus, Grafana, ELK Stack)
• Familiarity with serverless (AWS Lambda)
• Preferred AWS certifications (Solutions Architect, Security – Specialty)
• Understanding of architectural standards like TOGAF

Security Clearance: Due to industry requirements, the candidate must be a British citizen, have lived in the UK for the last 5 years, and be able to obtain high-level security clearance.

Why work for us?

IIG offers a culture akin to a small business within a larger organization, with competitive salary and benefits, including:

• Flexi-time
• Hybrid working
• Learning & Development budget
• Social events
• Matched pension and healthcare

We support career progression, innovation, and a diverse, inclusive environment.

Equal Opportunities:

CACI is committed to diversity and inclusion, providing reasonable adjustments during recruitment and supporting candidates with disabilities.

Other Details:

• Pay Type: Salary
• Locations: Bristol, Bromley, Cheltenham, Croydon