Principal Engineer

Principal Engineer

Hybrid Working - London - 2 days a week on site.

Financial Services

Lorien's leading banking client is looking for a strong Principal Engineer to join a high-profile transformation programme delivering a next-generation cloud-native customer onboarding platform.

This is a hands-on technical leadership role, combining architecture, engineering excellence, and team mentorship to help deliver a business-critical platform.

While experience within Banking or Financial Services is preferred, we are also keen to speak with candidates from technology-driven organisations, start-ups, scale-ups, or other complex engineering environments with experience building modern cloud-native platforms

The ideal candidate for this position has strong expertise in Cloud-Native Microservice Development (Python/Java), Containerisation (Docker/ECS/EKS), and GitLab, CI/CD, Terraform.

This role is based in London.

This role will be Via Umbrella.

Working in a Hybrid Model of 2 days a week on site.

Key Experience

• Provide technical leadership across multiple engineering squads, driving engineering standards and best practices.
• Design and develop cloud-native microservices using Python and/or Java.
• Lead architecture and design for distributed, event-driven systems.
• Champion modern DevOps, CI/CD, Infrastructure as Code, and cloud engineering practices.
• Mentor and coach a team of approximately 10 junior engineers, conducting code reviews and supporting technical development.
• Collaborate with architects, product owners, and senior stakeholders to ensure successful programme delivery.
• Drive production readiness through observability, resilience, automated testing, and secure engineering practices.

Key Skills

• Experience operating as a Principal Engineer, Staff Engineer, or equivalent senior technical leader.
• Strong hands-on development experience with Python and/or Java.
• Expertise in AWS, Docker, ECS/EKS (Kubernetes), and cloud-native microservices.
• Experience with Apache Kafka and event-driven architectures.
• Strong knowledge of GitLab CI/CD, Terraform, Infrastructure as Code, and Continuous Delivery.
• Proven ability to establish engineering standards, improve code quality, and influence technical direction.
• Experience mentoring, coaching, and developing engineering teams.

IND_PC3

Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.