A fast-growing Legal and Financial Services company based in Liverpool is requires a hands-on Lead Integration Engineer & Developer to take ownership of their growing integration platform connecting core internal systems with external partners and services. This is a high-impact role combining deep technical delivery with architectural leadership. Youll spend a significant portion of your time building production systems, while also shaping the future of their integration ecosystem. The platform is built around HubSpot and a modern event-driven architecture in AWS, and youll play a key role in defining how they design APIs, process events, and scale integrations across the business. The role is paying £90,000-£100,000 plus good benefits and is a hybrid role (3 days in the office 2 working from home), but with attendance in the central Liverpool office encouraged given the nature of the role and the team management aspect. Technology Environment Core Stack AWS (Lambda, API Gateway, EventBridge, SQS, SNS) Node.js / TypeScript and Python Data & Infrastructure DynamoDB, RDS Infrastructure as Code (Terraform, CDK, CloudFormation) CloudWatch and observability tooling Integrations HubSpot (CRM) Internal microservices and external APIs Required Experience Significant experience in backend or platform engineering Strong hands-on AWS experience (serverless preferred) Proven experience with distributed, event-driven systems Experience integrating with third-party APIs End-to-end ownership of systems (design/build/operate) Technical Expertise Event-driven architecture (EventBridge, SQS, SNS, Kafka) Reliability patterns (retries, idempotency, DLQs) Observability and debugging in distributed systems Data modelling and schema evolution Leadership & Collaboration Ability to lead technical design and influence architecture Experience mentoring engineers Strong communication across technical and non-technical teams Comfortable in a fast-paced, evolving environment Desirable Experience with HubSpot or CRM integrations Ownership of internal integration platforms High-volume event ingestion or real-time pipelines Containerisation (Docker, ECS, Kubernetes) Observability tools (Datadog, OpenTelemetry)