Principal Engineer

Principal Engineer l Architecture l Design l Coaching l Typescript l AWS l Kafka l GraphQL l Lambda l £550-£625 per day l Outside IR35 l twice a week in London l 3 months We're hiring a Principal Engineer to step into a critical gap on a large-scale platform rebuild, now moving into production and customer migration.

Maximise your chances of a successful application to this job by ensuring your CV and skills are a good match.

You'll operate as a technical leader across multiple squads, shaping architecture, mentoring leads, and unblocking delivery.

Essential Skills & Experience Proven Principal-level experience (80% Architecture/design
- 20% Coding) Strong in AWS, TypeScript, event-driven systems Experience with high-scale distributed systems Someone collaborative, hands-on, and pragmatic Desirable Salesforce Experience as this is their main CRM system Contract: Rate: £550-£625 per day Contract: Outside IR35 Location: London hybrid
- ideally twice a week Duration: Initial 3 month contract Start date: Immediate If you're interested, please apply or send your cv to and I'll be in touch! xwzovoh Principal Engineer l Architecture l Design l Coaching l Typescript l AWS l Kafka l GraphQL l Lambda l £550-£625 per day l Outside IR35 l twice a week in London l 3 months RSG Plc is acting as an Employment Business in relation to this vacancy.