Flagstone

Staff Engineer

Flagstone
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1 month ago
London, United KingdomStaff+

Responsibilities

  • Set front-end and mobile technical strategy across a tribe of 3–5 squads.
  • Lead cross-squad engineering initiatives and shepherd RFCs from proposal to adoption.
  • Build and maintain React and React Native systems while supporting and unblocking engineers.
  • Own cross-platform architecture decisions for web and mobile using React, React Native, and TypeScript.
  • Lead the evolution of the shared web and mobile design system.
  • Coach and mentor engineers in system design, coding standards, and testing.
  • Lead front-end and mobile communities of practice and drive adoption of engineering practices.
  • Identify emerging technologies, build proofs of concept, and create adoption roadmaps.
  • Drive observability, zero-downtime deployments, monitoring, and alerting for front-end applications.
  • Design UI resilience and performance standards across web and mobile.
  • Own threat modelling and security hardening for front-end products.
  • Represent Flagstone through talks, podcasts, published content, and engineering-community engagement.
  • Collaborate with Product Managers, designers, stakeholders, and cross-functional teams.

Requirements

  • Proven experience as a Staff Engineer or equivalent with a front-end and mobile focus.
  • Deep expertise in React, React Native, and TypeScript, including cross-platform architecture.
  • Experience owning and evolving a design system used across web and mobile applications.
  • Strong system architecture and design skills, including SOLID principles, TDD, DDD, and software design patterns.
  • Experience designing for resilience and performance at scale, including graceful degradation, zero-downtime deployments, observability, and performance budgets.
  • Experience with Azure development and cloud-based infrastructure, including CI/CD and pipeline observability.
  • Experience owning threat modelling and security hardening for front-end products, with strong knowledge of OWASP and secure coding practices.
  • Track record of originating and shepherding cross-team initiatives or RFCs through adoption.
  • Strong coaching, mentoring, leadership, problem-solving, strategic-thinking, stakeholder-management, and influencing skills.
  • Comfort representing the company externally through talks, writing, or community engagement.
  • Experience with Agile and Scrum practices.

Benefits

  • Hybrid working with at least one day per week in the London office.
  • Competitive bonus scheme.
  • Flexible benefits budget, including options such as hormone or fertility testing, cancer screening, and neuro-diversity coaching.
  • Salary sacrifice options for electric cars, nursery schemes, home goods, and tech goods.
  • Three-month Around the World work-from-anywhere scheme.
  • Mental wellbeing support through Spill.
  • £1,000 personal development budget.
  • Private healthcare through AXA, including reduced gym memberships and medical-history-disregarded coverage.
  • Medical cash plan covering dental and optical expenses.
  • Life insurance and income protection at four times annual salary.
  • Matched pension contributions up to 5%.
  • 25 days of holiday plus bank holidays, wellbeing days, and volunteering days.
  • Enhanced maternity, paternity, and adoption leave.

Tech Stack

Categories

FrontendMobile
Flagstone

About Flagstone

201-500 employees
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