Senior Software Engineer

Hargreaves Lansdown PLC; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Discretionary annual bonus

25 days holiday + bank holidays

Hybrid working

Pension up to 11%

Private medical insurance

Health care cash plans

Wellbeing support

Volunteer days

Job summary

Hargreaves Lansdown is hiring a senior frontend engineer to design, develop, and maintain a high‑quality React application. You will work with product, design, and backend teams to deliver features end‑to‑end, champion best practices, and contribute to architectural decisions.

We expect 8+ years in web development with strong React and TypeScript skills, plus mentoring experience. The role supports hybrid working with flexible arrangements in the UK.

Qualifications

• 8+ years of professional web development experience.
• Strong React and TypeScript expertise.
• Experience mentoring engineers.
• Security-conscious frontend development.
• Experience with testing and code reviews.
• Familiarity with micro-frontend concepts is a plus.

Responsibilities

• Build and maintain a high-quality React application.
• Integrate with RESTful and GraphQL APIs.
• Diagnose, debug, and resolve issues across the stack for reliability.
• Participate in code reviews to improve quality.
• Collaborate with designers, PMs, and QA end-to-end.
• Promote best practices and architectural decisions.

Skills

React

TypeScript

Hooks

State management

Code reviews

Mentoring

REST/GraphQL APIs

Testing (Jest/RTL/Cypress)

Security

Agile

Tools

AWS

Job description

Excited to grow your career? Our purpose is to make it easy for people to save and invest for a better future. We are looking for great people to join us, so please come and invest in YOUR future at Hargreaves Lansdown. We know that sometimes people can be put off applying for a job if they don't tick every box. If you're excited about working for us and have most of the skills or experience we're looking for, please go ahead and apply. We’d love to hear from you!

About the role

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, with5+ years using React.
• Experience in a senior role and mentoring junior engineers.
• Strong proficiency inReact, including hooks, functional components, and state‑management patterns.
• Solid understanding ofTypeScriptand 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 usingJest, React Testing Library, or Cypress/Playwright.
• Nice to Have Hands‑on experience withAWS servicesrelevant 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.

Why us?

Here at HL, we’re the UK’s number 1 investment platform for private investors, based in Bristol. For more than 40 years we’ve helped investors save time, tax and money on their investments. To achieve our mission, we believe we have a workplace like no other, with constant learning, dynamic teams, and a great ethos. We're steered by core values that promote service, quality, innovation, and opportunity in everything we do.

What's on offer?

• Discretionary annual bonus* and annual pay review
• 25 days* holiday plus bank holidays and 1-day additional Christmas closure
• Option to purchase an additional 5 days holiday**
• Flexible working options available, including hybrid working
• Enhanced parental leave
• Pension scheme up to 11% employer contribution
• Income Protection and Life insurance (4 x salary core level of cover)
• Private medical insurance*
• Health care cash plans - including optical, dental, and outpatient care
• Health screening programme
• Help@hand - confidential support including mental health counselling and remote GP
• Wellhub - unlimited access to fitness providers and wellness coach sessions
• Variety of travel to work schemes with bike storage and shower facilities
• Inhouse barista and deli serving subsidised coffee and sandwiches
• Two paid volunteering days per year * dependant on role level
• ** only available to select during our annual benefits window, in November each year

HargreavesLansdown is an inclusive employer that values diversity in its workforce. We encourage applications from all individuals without regard to race, religion, gender, sexual orientation, national origin, disability or age.

This role may also be available on a flexible working or part time basis – please ask the Recruitment & Onboarding team for more information.

Please note, we are unable to provide employment sponsorship to candidates.

Hargreaves Lansdown is the UK's number one platform for private investors. Our purpose is to empower people to save and invest with confidence, and today, we are trusted with more than £120billion by over 1.7 million clients. We are based in the heart of Bristol now with over 2,000 colleagues. We believe we have a workplace like no other, with constant learning, dynamic teams and a great ethos. We're steered by our core values that promote service, quality, innovation, and opportunity in everything we do.

For more information about careers at HL and to see all our vacancies, please visit our careers website.