Senior Software Engineer

Salary: £62,000 - 90,000 per year

Requirements:

• We are looking for a proactive engineer who enjoys solving complex technical challenges and taking ownership of outcomes.
• We are looking for experience with Node.js and TypeScript.
• We are looking for AWS and serverless application development experience.
• We are looking for experience designing and developing REST APIs.
• We are looking for experience with event-driven architectures, such as SNS and SQS or similar.
• We are looking for experience with DynamoDB and JSON data processing.
• We are looking for experience with Infrastructure as Code, such as Terraform, CDK, SST or similar.
• We are looking for experience with CI/CD pipelines and modern software delivery practices.
• We are looking for experience building and integrating APIs.
• We are looking for React and TypeScript experience.
• We are looking for strong communication and collaboration skills.
• GraphQL API design and implementation experience is desirable.
• GraphQL federation and schema design experience is desirable.
• Experience migrating from REST to GraphQL architectures is desirable.
• Experience with Typesense, Elasticsearch or Contentful is desirable.
• Experience with OAuth and authentication flows is desirable.
• Experience with LaunchDarkly or feature management platforms is desirable.
• Experience with Grafana and observability tooling is desirable.
• Experience with cross-account AWS architectures is desirable.
• Experience with TanStack Query, Zustand, Vite and Tailwind CSS is desirable.
• Experience with micro-frontend architectures is desirable.
• Experience with AI-assisted and agentic development workflows is desirable.
• Financial Services experience is desirable.

Responsibilities:

• We design, develop and support scalable backend services and APIs.
• We build AWS serverless applications using modern engineering practices.
• We develop integrations with internal and external systems.
• We enhance platform capabilities for managing and maintaining customer data.
• We improve platform resilience, observability, performance and scalability.
• We contribute across the full stack, including React-based applications where required.
• We take ownership of features throughout the software development lifecycle, from design to production support.
• We participate in architecture discussions, code reviews and technical design sessions.
• We collaborate with Product, Platform and Engineering teams to deliver customer value.
• We promote engineering excellence through automation, continuous improvement and modern development practices.
• We leverage AI and agentic tooling to improve engineering productivity and software delivery.

Technologies:

• AI
• API
• AWS
• Backend
• CI/CD
• CSS
• ElasticSearch
• Frontend
• Grafana
• GraphQL
• Support
• JSON
• OAuth
• REST
• React
• Serverless
• Terraform
• TypeScript
• NodeJS
• Cloud
• DevOps

More:

We are HL, the UKs number 1 investment platform for private investors, based in Bristol. For more than 40 years we have helped investors save time, tax and money on their investments. We offer a permanent, full-time role of 37.5 hours per week, Monday to Friday, with a hybrid flex working pattern and a minimum of 2 days in our Bristol head office, BS2 0TR. We also offer a wide range of benefits, including a discretionary annual bonus, annual pay review, 25 days holiday plus bank holidays and a Christmas closure day, the option to purchase additional holiday, flexible working options, enhanced parental leave, pension contributions up to 11%, income protection and life insurance, private medical insurance, health care cash plans, health screening, confidential support services, Wellhub access, travel-to-work schemes, bike storage and shower facilities, an in-house barista and deli, and two paid volunteering days per year. We are an inclusive employer that values diversity and support flexible or part-time working where possible.

last updated 37 week of 2026