Principal Engineer / Developer (Full Stack TypeScript React Node) London / WFH to £110kOpportunity to progress your career in a hands-on technical leadership role at a well established consumer facing financial services company that help people to manage debt, as they go through a technical transformation and scale-up following recent investment. What's in it for you:Salary to £110kBonus25 days holidayPensionEmployee Assistance Programme Onsite gym and well-being championsX2 volunteering days per year Opportunity to make an impact as part of new team in a role you can shape Your role:As a Principal Engineer you will act as a technical authority and role model for engineers across engineering teams / Agile Squads, helping them with design, problem solving and complex technical decisions. You'll lead and own technical transformation and architectural initiatives, in close collaboration with the Enterprise Architect, helping to shape and evolve the platform, services and system boundaries as the company scales whilst mentoring engineers and driving high standards of quality, security, reliability and operability across the stack.Collaborating with Engineering Leads you'll help teams to navigate change, migration and transition of critical live systems and lead the way in leveraging AI and automation tools.Location / WFH:You'll be based in fantastic new offices in London that offer a wide range of facilities including wellness rooms and onsite gym for three days a week with flexibility to work from home twice a week. About you:You have advanced full stack development skills including TypeScript backends, microservices, APIs, React and ideally React Native too (although you can pick this up on the job)You have experience of leading and mentoring engineers to drive technical excellence and a culture of collaboration You have a strong understanding of distributed systems, RDBMS (Oracle) and data modelling trade-offs You have experience of integrating AI and agentic systems into business workflows and appsYou have a good understanding of cloud native architecture and modern engineering practices such as CI/CD, Test Automation, monitoring and observability You have experience of transitioning systems or platforms including dual running and incremental swich overs You're collaborative and pragmatic, comfortable working closely with Product Managers to explain technical aspects and trade-offs to shape delivery plans that balance speed, quality and riskApply now to find out more about this Principal Engineer / Developer (Full Stack TypeScript React Node) opportunity.JBRP1_UKTJ