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Principal Engineer – Technology Consulting – Java / Spring London, Leeds, Manchester or Newcastle | Permanent | Hybrid (3 days onsite)£87,000–£118,000 + up to 20% bonus + exceptional benefits Join a forward-thinking technology consultancy as a Principal Engineer and take the lead on delivering complex, high-impact solutions for clients across the UK. This is a unique opportunity to combine deep technical expertise with leadership, working hands-on with modern technologies while shaping engineering standards and mentoring high-performing teams. This role sits within a growing Software Engineering function and offers the chance to work across a variety of industries and projects. You’ll collaborate with architects, consultants, and stakeholders to design and deliver scalable, secure, and innovative systems — all while contributing to a strong internal engineering culture. Within this role: Leading engineering delivery on complex client engagementsSetting and embedding best practices: CI/CD, cloud-native, DevOps, test automation, AI-assisted developmentMentoring and managing engineers, shaping frameworks and engineering cultureStaying hands-on with coding, prototyping, and emerging technologiesCollaborating with clients and stakeholders to design end-to-end solutions What we’re looking for: Proven experience leading engineering teams and delivering enterprise-grade solutionsDeep expertise in Java and SpringStrong background in API and data engineeringProficiency with cloud platforms (AWS, Azure, or GCP)Passion for mentoring, coaching, and continuous improvementEligible for UK security clearance Benefits: Core Benefits: Up