Senior Software Engineer

Hargreaves Lansdown — United Kingdom · Posted ~2 hours ago

Senior Full-time Hybrid

Skills

React REST APIs GraphQL software development debugging code review software architecture REST

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Summary ✨ AI‑Generated

Join a product engineering team as a senior software engineer responsible for building and evolving a high-quality web application. You will work with modern frontend and API technologies, diagnose issues across the stack, contribute to architecture and code reviews, and own features from concept to release.

Highlights

Own features from concept through release, build and maintain high-quality web applications, collaborate across product and engineering disciplines, influence architecture, and help establish strong engineering standards.

Description

You'll contribute to the design, development, and maintenance of a critical part of our platform, helping deliver seamless and high‑quality user experiences across our applications. You'll work closely with product, design, and backend teams to build new features, improve performance, and ensure technical excellence in everything you deliver. You'll take ownership of your work from concept to release, write clean and maintainable code, participate in code reviews, and help drive consistent engineering standards across the team. You'll also diagnose and resolve complex issues, contribute to architectural decisions, and play an active role in shaping the evolution of our platform. What You'll Do Build and maintain a high‑quality React application. Integrate with RESTful and GraphQL APIs. Diagnose, debug, and resolve issues across the stack, ensuring a smooth and reliable user experience. Participate in code reviews, offering constructive feedback and helping improve overall code quality. Work cross‑functionally with designers, PMs, and QA to deliver features end‑to‑end. Support continuous improvement efforts by sharing knowledge, proposing enhancements, and adopting best practices. Contribute to architectural discussions and help shape the technical direction of our app. What We're Looking For 8+ years of professional web development experience, with 5+ years using React. Experience in a senior role and mentoring junior engineers. Strong proficiency in React, including hooks, functional components, and state‑management patterns. Solid understanding of TypeScript and type‑safe frontend development. Strong understanding of secure web development, especially within financial or regulated environments. Strong debugging and performance‑optimization skills in modern browsers. Excellent communication skills and experience working in agile environments. Comfort writing unit and integration tests using Jest, React Testing Library, or Cypress/Playwright. Nice to Have Hands‑on experience with AWS services relevant to frontend workflows (e.g, S3, API Gateway, Lambda). Experience in fintech or banking applications. Familiarity with feature driven modular architecture. Familiarity with Module Federation and micro frontend architecture Interview Process Stage 1 - Discussion with the hiring manager (30 mins) A brief conversation to explore your background, motivations, and fit for the team and role. Stage 2 - Take home technical test (self paced) A small technical test designed to showcase your knowledge of skillset of React & TypeScript Stage 3 - Technical Interview (90 mins) A hands‑on deep dive into your React expertise, covering coding, architecture, and problem‑solving. We will also discuss your take home test. Be ready to share your screen during the technical discussion part of the interview. Stage 4 - Final Interview (30 mins) A final call with a member of our Engineering leadership team