Software Engineer

Hargreaves Lansdown; West of England; On-site; GBP 75,000 - 105,000; Full time

Job summary

Hargreaves Lansdown is seeking a Full Stack Engineer with a strong backend focus to help build and evolve the Onboarding platform. You will work on AWS serverless backend services, APIs and platform capabilities while contributing to frontend applications when required.

You’ll collaborate with Product, Platform and Engineering teams to deliver customer value and drive improvements across the platform, enabling scalable account onboarding experiences for millions of interactions.

Qualifications

• Strong ownership mentality.
• Ability to solve problems independently.
• Comfortable working within distributed systems and cloud-native environments.
• Strong communication and collaboration skills.

Responsibilities

• Design, develop and maintain backend services.
• Build scalable APIs and integrations with internal and external systems.
• Develop AWS serverless applications using modern engineering practices.
• Contribute to platform scalability, resilience, observability and performance.
• Work across the full stack where required.
• Take ownership of features and issues from design through to production.
• Drive engineering improvements, automation and operational excellence.
• Participate in architecture discussions, code reviews and technical design sessions.
• Collaborate closely with Product, Platform and Engineering teams to deliver customer value.
• Support developers in upskilling to transition to cloud-based solutions.

Skills

Node.js

TypeScript

REST API development

AWS

GraphQL

Cloud-native

Observability

Tools

Middy

Terraform

CDK

SST

DynamoDB

SNS/SQS

Job description

Full Stack Engineer with a strong backend focus, working across TypeScript, Node.js, GraphQL and AWS serverless technologies. You'll help build and evolve the Onboarding platform, delivering scalable APIs, cloud-native services and customer journeys that support account onboarding experiences.

We're expanding our Onboarding engineering team and are looking for a Full Stack Engineer with a strong backend focus to help build and evolve one of our key customer discovery platforms.

You'll work primarily on AWS serverless backend services, APIs and platform capabilities, whilst also contributing to frontend applications when required. This is an opportunity to work with modern cloud-native technologies, GraphQL-based architectures, event-driven systems and customer-facing products that play a key role in our digital experience.

We're looking for engineers who enjoy solving complex technical problems, taking ownership of solutions and contributing to the continuous improvement of both technology and engineering practices.

You'll help build customer journeys that enable clients to complete account opening and transfer journeys.

What You'll Be Doing

• Design, develop and maintain backend services
• Build scalable APIs and integrations with internal and external systems.
• Develop AWS serverless applications using modern engineering practices.
• Contribute to platform scalability, resilience, observability and performance.
• Work across the full stack where required
• Take ownership of features and issues from design through to production.
• Drive engineering improvements, automation and operational excellence.
• Participate in architecture discussions, code reviews and technical design sessions.
• Collaborate closely with Product, Platform and Engineering teams to deliver customer value.
• Supported developers in upskilling to facilitate the transition from on-premises services to cloud-based solutions

What We're Looking For

• Strong ownership mentality.
• Ability to solve problems independently.
• Comfortable working within distributed systems and cloud-native environments.
• Strong communication and collaboration skills.
• Passion for building scalable cloud-native applications.
• Curiosity and willingness to learn across the full stack.
• A proactive approach to identifying technical improvements and opportunities for innovation.

Required Skills & Experience

Backend Engineering

• Node.js
• TypeScript
• REST API development
• API integrations
• broad range of AWS technologies
• Event-driven architectures
• Middleware frameworks such as Middy
• JSON data processing

Cloud & Infrastructure

• AWS
• Infrastructure as Code (Terraform, CDK, SST or similar)
• DynamoDB
• SNS / SQS
• Familiarity with core AWS services including IAM, Secrets Manager and Parameter Store
• Experience working with CI/CD pipelines and modern software delivery practices

Full Stack Experience

• Experience working across frontend and backend technologies
• React and TypeScript exposure
• Building customer-facing web applications

Desirable Skills

• GraphQL
  • Designing and implementing GraphQL APIs
  • GraphQL schema design
  • GraphQL federation patterns
  • Transitioning from REST-based architectures to GraphQL
  • Consuming GraphQL services within distributed systems

Search & Content Platforms

• Typesense
• Elasticsearch
• Contentful or other Headless CMS platforms

Modern Engineering Tooling

• LaunchDarkly or feature flagging platforms
• OAuth and authentication flows
• Cross-account AWS patterns
• Analytics integration
• Experience with observability tooling such as Grafana

Frontend Technologies

• TanStack Query
• Zustand
• Vite
• Micro-frontend architectures (e.g. Module Federation)
• Tailwind CSS

Nice to Have

• Financial Services experience

You'll be comfortable taking ownership of features from design through to production, collaborating across engineering disciplines, and proactively identifying opportunities to improve both the platform and the way we work.

You'll contribute to the evolution of Onboarding by delivering reliable, scalable solutions, supporting a culture of engineering excellence, and helping to shape a platform that serves millions of customer interactions.