Principal Engineer; Solutions Architect Frontend & Mobile

Position: Principal Engineer (Solutions Architect) - (Frontend & Mobile)
About HL And The Opportunity We're building the next generation platform for one of the UK's largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets. This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. You will contribute in building in our next generation Unified Client Experience (UCX) frontend platforms that will streamline client journeys across a range of products and services, in both web and mobile domains.

It's an opportunity to design, architect and build a modern web and mobile applications using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation, transforming client journeys and delivering on HL's vision to give people financial freedom. You will work with like-minded people from business, product and engineering functions to develop and refine client journeys covering onboarding, KYC, account management and investment workflows in a secure and compliant environment.

By joining us, you'll help deliver innovative and scalable solutions that make investing easier and more accessible to millions of users across the UK. Be part of HL's future. Be part of the future of investing. Shape it with us. What You'll Be Doing Set technical direction:
Define & maintain Frontend / Web and mobile software architecture and patterns, engineering standards and the 'right way' to build greenfield HL state of the art web and mobile applications. Own a technical 'opinionated' architecture for front end and mobile applications: shape application designs, rail guards and make trade-offs and prevent regret spend. Define scalable and reusable UI component-based architecture, state management, routing/navigation, error handling, data fetching and modularization strategy.

Design, publish and own engineering standards including coding standards, CI/CD strategy, deployment blueprint, testing automation strategy, observability design and security baseline. Design Integration strategies for HL web and mobile apps with existing and new systems to deliver a seamless client experience across a range of products and services. Tackle high-impact problems: performance bottlenecks, reliability issues, scaling limits, complex integration, tech debt hotspots.

Lead through influence:
Align stakeholders, run design reviews, drive decisions, own technical governance and unblock delivery teams. Mentor and level-up others:
Coach senior/leads and set strong bar for engineering excellence. R&D:
Stay at the forefront of the React/React Native ecosystem, evaluating new technologies, industry practises and guide the engineering delivery teams with adoption. About You 10 years of experience with Web / Frontend & Mobile software engineering and at least 4 years in a Principal Engineering or Solution Architect role or similar Deep understanding of Front End / Web and Mobile architecture approaches and design patterns including micro front ends, module federation, stateless, SPA and others Advanced knowledge of React and React Native Eco system and AWS technology stack.

Strong API/integration experience: REST / Graph

QL, auth flows, contract design and resilience patterns Well versed in latest CI/CD practises and tools, deployment methodologies and experienced in tools to enforce quality standards. Mastery of Webpack/Metro configurations, Babel and Type Script Expertise in complex state management and understanding the nuances between DOM based and Native based styling/layouts. Demonstrated ability to create clear and well written documentation for architecture, design patterns, rail guards and lead design governance.

Strong communication and articulation skills, capable of independently navigating an organization and able to negotiate and lead discussions across various levels and departments to develop consensus. Interview Process 3 Stage Interview Stage 1 - Discussion with our Hiring Manager (30mins): A chance to talk with our Hiring Manager in more detail about the role, our tech stack and some of the problems we solve every day.

Here, we'll dig a bit more into some of your experiences, understand the processes you're familiar with and the technologies you've used to deliver end user value. Stage 2 - Technical (70mins):
For the technical part, we'd like you to sit down with some of your potential peers to work through a technical solution or a coding problem. We'll be looking together at where a sample piece of technology / code has issues and how we might address them. Stage 3 - Culture Fit (30mins):
In our Cultural Fit interview, we'll be looking to learn more about your past experiences, what keeps you motivated, where we may be able to help you improve further, key decisions you've helped to make and issues you've resolved. Salary & Package We offer a competitive salary, depending on experience, alongside a generous…