Senior Integration Engineer

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

A key part of HL’s technology and transformation strategy is the delivery of modern, cloud native integration and data capabilities that can be adopted across the business. These capabilities enable HL’s transformation journeys by providing scalable, secure, and reusable integrations, APIs, and data products that act as trusted sources of business information.
The Senior Integration Engineer role has a dual focus:
• Designing and building cloud native integrations and APIs on AWS
• Engineering data pipelines and hubs that support data reuse and provide reliable, well governed data assets
• Liaising with wider Product engineering and business teams to drive integration builds and patterns for adoption across the organisation.
This role sits within the Integration team and works closely with Data Platform, Architecture, and Product teams to deliver end to end integration and data hub solutions.

What you’ll be doing

Business Engagement & Strategic Integration Direction

• Engage closely with business stakeholders and cross‑functional technical teams to understand current and future integration needs
• Help define and shape forward looking integration and API patterns that scale across the organisation
• Translate business objectives into pragmatic integrations and data solutions, ensuring delivery is value‑led rather than purely technology‑driven
• Influence integration architecture decisions by balancing strategic direction, delivery feasibility, and measurable business outcomes
• Act as a trusted technical partner to the business, clearly articulating trade‑offs, benefits, and opportunities related to integration approaches

Cloud‑Native Integration & API Engineering

• Lead the design and implementation of cloud‑native integration solutions using modern AWS services and patterns
• Build and maintain secure, scalable, and reusable APIs that expose core business and data capabilities
• Apply API‑first and contract‑driven design principles to support long‑term reusability and governance
• Implement synchronous, asynchronous, and event‑driven integration patterns as appropriate

Data Engineering & Data Hub Delivery

• Own and lead the engineering delivery of core data hubs and integration‑led data pipelines
• Design and implement reliable, high‑quality data pipelines aligned with HL’s SDLC and architectural principles
• Collaborate with the Data Platform team to ensure solutions align with AWS and Snowflake standards
• Contribute to the consolidation and distribution of key data domains into reusable data products

Quality, Testing & DevOps

• Design and implement automated testing strategies across integrations, APIs, and data pipelines
• Drive towards a gold‑standard, fully automated testing suite, including unit, integration, data quality, and contract testing
• Embed build, test, and deployment processes into CI/CD pipelines using DevOps best practices
• Ensure solutions are observable and production‑ready through logging, monitoring, alerting, and resilience patterns

Collaboration & Technical Leadership

• Work across integration, data, and platform teams to enable consistent engineering patterns and standards
• Support HL’s transformation programmes by leading solutions for  reliable, real‑time, and batch data movement
• Influence integration and data engineering best practices across the team
• Provide technical leadership and mentoring to other engineers where required

About you

Key Skills & Experience

Cloud & Infrastructure

• Strong experience designing and delivering solutions on AWS, including services such as:
  • API Gateway, Lambda, EventBridge, SQS/SNS
  • CloudWatch, IAM, VPC networking concepts
• Infrastructure‑as‑Code using Terraform, including:
  • Reusable modules
  • Environment promotion and configuration management
  • Secure, automated deployments

Integration & API Engineering

• Hands‑on experience building APIs and integration services using TypeScript
• Strong understanding of API‑first, RESTful, and event‑driven architectures
• Experience with schema versioning, contract testing, and backward‑compatibility strategies

Data Engineering

• Experience building and operating data pipelines on cloud data platforms
• Strong working knowledge of dbt for data transformations, testing, and documentation
• Familiarity with Snowflake data modelling, optimisation, and cost‑aware design
• Understanding of data quality, lineage, and observability concepts

DevOps & Engineering Excellence

• CI/CD pipeline implementation for applications, infrastructure, and data workloads
• Strong focus on test automation and engineering quality
• Ability to operate production systems, including incident support and root‑cause analysis

Collaboration & Technical Leadership

• Comfortable working across integration, data, and platform teams
• Able to influence architecture and engineering standards
• Willing to mentor and support less‑experienced engineers
• Pragmatic, delivery‑focused mindset with strong ownership of outcomes

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?

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Hargreaves Lansdown 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.