Principal Engineer (AWS & Java)

London Source: WhatJobs

See advert for pay

Overview

In this role you will be the most senior hands-on technical expert for the Risk Screening platform, translating architectural intent into robust production systems. You’ll own non-functional characteristics like latency, scalability, and reliability, ensuring designs are realized and validated in production. You’ll lead complex, high-impact changes with Java and AWS, collaborating with architects and engineering teams to uphold standards. This is a high-visibility, technical leadership role with broad influence and a focus on long-term sustainability.

Pay / Benefits

healthcare
retirement planning
paid volunteering days
wellbeing initiatives
tailored benefits

Responsibilities

Act as the senior technical authority for implementation within the Risk Screening platform
Collaborate with enterprise and solution architects to validate designs and guide development
Lead the implementation of complex, business-critical changes with emphasis on quality, performance and maintainability
Provide hands-on Java expertise (concurrency, performance, API design)
Define and validate non-functional requirements (latency, throughput, scalability, reliability)
Drive cloud scaling and capacity management for predictable performance under varying loads
Work with large databases/data stores on performance and operational management
Solve complex, multi-component problems and serve as escalation for system-level issues
Guide teams on AWS best practices, elastic scaling, and cost-efficient cloud usage
Coach and mentor engineers, promoting engineering standards and practical excellence
Partner with SRE and operations teams to improve operability and reduce customer impact
Review critical changes for non-functional requirements around security, reliability and performance
Influence engineering culture through leadership-by-example

Key requirements

Extensive experience as a Principal Engineer or equivalent in large-scale production systems
Deep, hands-on Java expertise (Java 11+; JVM, concurrency, performance optimization)
Strong experience building/running distributed systems at scale (performance, scalability)
Proven ability to work with large databases/data platforms (performance tuning, operational management)
Solid production operations understanding (observability, incident management, reliability engineering)
Ability to influence teams through technical credibility
Experience with AWS in real-world operations and cloud scaling
Track record of delivering robust, secure production systems