Principal Engineer
Posted Today by Formula.
£75 Per hour
Outside
Hybrid
London Area, United Kingdom
Summary: The Principal Engineer role involves defining the architectural vision for a large-scale API ecosystem within a globally scaled technology business. This hands-on position requires expertise in designing cloud-native distributed systems and leading initiatives in security, performance, and maintainability. The role also emphasizes the integration of AI capabilities into engineering workflows and the promotion of best practices such as TDD and CI/CD. The position is hybrid and offers a contract length of 3 months rolling, with an outside IR35 status.
Key Responsibilities:
- Defining and driving the architectural vision for a large-scale API ecosystem
- Designing cloud-native distributed systems at scale
- Building high-throughput event-driven services
- Leading on security, observability, performance, and maintainability
- Championing TDD, CI/CD, Infrastructure as Code, and automated testing
- Embedding AI-powered capabilities into engineering workflows
Key Skills:
- TypeScript
- Node.js
- AWS (EKS, Lambda, Aurora RDS)
- Kubernetes
- GraphQL
- Kafka
- Terraform
- DataDog
- Salesforce or enterprise CRM experience is a strong advantage
Salary (Rate): £75.00/hr
City: London
Country: United Kingdom
Working Arrangements: hybrid
IR35 Status: outside IR35
Seniority Level: undetermined
Industry: IT
Principal Engineer : Rate TBC : Outside IR35 : Hybrid London : 3 months rolling
A globally scaled technology business is seeking a Principal Engineer to define the next generation of its API platform. Operating at significant scale, this is a hands-on engagement with real influence over the architectural direction of a critical engineering pillar.
Key responsibilities as a Principal Engineer:
- Defining and driving the architectural vision for a large-scale API ecosystem
- Designing cloud-native distributed systems at scale
- Building high-throughput event-driven services
- Leading on security, observability, performance, and maintainability
- Championing TDD, CI/CD, Infrastructure as Code, and automated testing
- Embedding AI-powered capabilities into engineering workflows
Skills and requirements:
- TypeScript
- Node.js
- AWS (EKS, Lambda, Aurora RDS)
- Kubernetes
- GraphQL
- Kafka
- Terraform
- DataDog
- Salesforce or enterprise CRM experience is a strong advantage
Contract details:
- IR35: Outside IR35 (Rate TBC)
- Contract length: 3 months rolling
- Location: London (Hybrid)
- Start date: ASAP
Apply now or reach out directly to find out more. Due to the high volume of applications, not all applicants will receive feedback.