Senior Frontend Engineer, Pensions Team – React

InvestEngine

. Build and maintain customer-facing pension journeys in React and TypeScript .

Posted 11/2/2026full-timeRemote • United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and maintaining customer-facing applications using React and TypeScript, with a strong focus on API integration, unit testing, and frontend architecture. Capable of collaborating effectively with cross-functional teams and ensuring high-quality feature delivery.

Highest-signal resume keywords

React DevelopmentTypeScript ProficiencyREST API IntegrationUnit Testing (Jest, React Testing Library)Frontend Architecture Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

ReactTypeScriptREST APIUnit TestingComponent TestingMulti-Step FormsState Management (Effector, Redux)Web AccessibilityFeature FlagsError Monitoring

Soft Skills

Strong OwnershipClear Communication

Tools & Technologies

Claude CodeCodexGrowthBookSentryPlaywright

Industry Keywords

FintechRegulated Industry

Tech Stack

Tools & technologies

JestReactReact NativeReduxTypeScript

About the role

Key responsibilities & impact

Build and maintain customer-facing pension journeys in React and TypeScript
Own features from refinement to production, shipping web in the same sprint as backend
Agree API contracts, states and error handling with backend engineers and designers
Build complex, multi-step forms for account opening, transfers and declarations
Write unit and component tests, and release safely behind feature flags
Monitor features in production and fix issues quickly
Work in a large, long-lived codebase and follow the documented frontend architecture
Use AI coding tools (Claude Code, Codex) in daily work and review their output
Set frontend review and testing practices in the team
Onboard a second frontend engineer
Collaborate with Product, Design, QA, Operations and the wider frontend group
Own the frontend scope of a pension administrator migration, including new account-opening flows, updated legal documents and in-app changes for existing customers

Requirements

What you’ll need

Commercial experience with React and TypeScript as your main tools over the last 2+ years, in a large, long-lived codebase
Production experience with a state manager beyond component state (Effector, Redux or similar)
Solid REST API integration skills, including loading and error states
Experience working closely with backend engineers — discussing and shaping API contracts, not just consuming them
Experience building complex or multi-step forms in production
Unit or component testing as part of your daily work (Jest, React Testing Library or similar)
General understanding of web accessibility (semantic HTML, keyboard navigation, ARIA)
Experience working within a documented frontend architecture
Strong ownership: clarify unclear requirements before starting and see features through to production
Clear communication with engineers and non-technical stakeholders
English B2+ and fluent Russian
Hands-on backend experience — commercial or personal projects (nice to have)
Experience building a Backend for Frontend (BFF) layer (nice to have)
Experience planning frontend architecture and breaking work down for other engineers (nice to have)
Experience with Effector (nice to have)
Playwright or other end-to-end testing tools (nice to have)
Feature flags and error monitoring (GrowthBook, Sentry or similar) (nice to have)
React Native experience (nice to have)
Experience in fintech or another regulated industry (nice to have)

Benefits

Comp & perks

Remote-first and flexible — work from anywhere, at your own pace
Unlimited vacation — take time off when you need it, no fixed limits
Impact from day one — own the web side of a business-critical pensions product
Real ownership — shape how frontend works in the team from the start
Growth — onboard and mentor the next frontend engineer joining the team
Modern tooling — TypeScript, React, Effector, Jest, Playwright, Storybook, Claude Code and Codex
Supportive team — thoughtful, skilled colleagues who care about quality and results