UI Engineer (Cybersecurity)

Location: London, UK; hybrid work with three days per week in the London office

Company

hirify.global Technologies builds Acra, an infrastructure-agnostic secure-enclave platform for protecting critical government and commercial workflows.

What you will do

• Architect and build high-performance, accessible, secure interfaces across React/TypeScript web applications and native mobile clients using Swift/iOS or Kotlin/Android.
• Own client applications end to end, including technical design, component implementation, testing, deployment, observability, and production operations.
• Integrate RESTful and WebSocket/event-driven APIs with real-time streaming, optimistic updates, and offline or low-bandwidth resilience.
• Develop scalable design systems and establish frontend and mobile testing practices across unit, component, and end-to-end tests.
• Address secure token handling, biometric authentication, encrypted local caches, certificate pinning, zero-trust sessions, and client-side data leakage prevention.
• Partner with product, UX, backend, and security specialists while optimizing performance across browsers and mobile hardware.

Requirements

• Strong professional experience building production-grade web applications with modern React and TypeScript.
• Hands-on native mobile development experience with Swift/iOS or Kotlin/Android, or proven experience bridging cross-platform architectures with native modules.
• Deep understanding of UI architecture, state management, and responsive design systems.
• Experience consuming, designing, and optimizing REST, WebSocket, or GraphQL APIs for client performance and intermittent connectivity.
• Familiarity with client-side security fundamentals, including content security policies, token management, secure device storage, and client-layer threat modeling.
• End-to-end feature ownership from Figma designs through deployment and post-release monitoring.
• Disciplined automated testing experience with tools such as Jest, React Testing Library, XCTest/Espresso, Playwright, or Cypress.
• Excellent debugging skills across browsers, native mobile runtimes, device profiles, and network conditions.
• Product-minded judgment, strong ownership, independence, and comfort with technical ambiguity and fast feedback loops.

Nice to have

• Experience with secure or regulated environments such as defence, government, cybersecurity, fintech, or critical infrastructure.
• Familiarity with WebAssembly, client-side cryptography, or zero-knowledge protocols.
• Native mobile deployment, MDM enterprise distribution, or App Store/Play Store governance experience.
• Experience with real-time collaborative interfaces, mapping/GIS visualisations, or tactical telemetry dashboards.
• Familiarity with container-based frontend workflows, mobile CI/CD pipelines, or frontend observability tools.
• Experience with systems requiring auditability, WCAG 2.1+ accessibility compliance, and operational evidence.

Culture & Benefits

• Hybrid work setup with collaboration in the London office three days per week.
• Equity, competitive salary, employer pension contributions, and private health insurance.
• Company retreats and meetups designed to support work-life balance.
• Inclusive, compassionate, and flexible culture focused on employee empowerment and collaboration.