Lead Integration Engineer & Developer

Role Overview

We’re looking for a senior, hands-on Lead Integration Engineer & Developer to further develop and evolve our integration platform—connecting core internal services with external systems and partners.

This is a high-impact individual contributor role combining deep technical expertise with architectural leadership. You’ll spend a significant portion of your time writing production code, while also setting direction, defining standards, and mentoring engineers across the integration domain.

Our platform is centred around HubSpot and a growing ecosystem of internal services and partner integrations, built on a modern event-driven architecture in AWS.

You’ll play a key role in shaping how we design APIs, handle events, ensure reliability, and scale integrations across the business.

What You’ll Be Doing

Own the Integration Architecture

• Design and evolve the architecture for a scalable integration platform (Hubspot)
• Define patterns for event-driven workflows and asynchronous processing
• Establish best practices for reliability (idempotency, retries, failure handling, data consistency)
• Set standards for how internal services integrate with external APIs and third-party systems

Build the Platform (Hands-On)

This is a hands-on engineering role. You will actively design, build, and operate production systems.

• Develop serverless services using AWS (Lambda, API Gateway)
• Build event-driven pipelines using EventBridge, SQS, and SNS
• Implement robust API integrations and webhook processing
• Design and implement data mapping and transformation between systems

Integrate External Systems

• Build and maintain integrations with platforms such as HubSpot and other partner systems
• Design resilient, scalable API integrations
• Manage schema evolution and ensure long-term integration stability

Improve Reliability & Observability

• Implement monitoring, alerting, and observability across integration workflows
• Diagnose and resolve complex issues in distributed systems
• Continuously improve failure recovery and system resilience
• Apply best practices such as dead-letter queues, retries, and idempotent processing

Technical Leadership

• Define and promote engineering best practices across the integration domain
• Mentor and support engineers working on integration services
• Influence architectural decisions across teams and services
• Act as a subject matter expert for event-driven and distributed systems

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, or CloudFormation)
• CloudWatch and observability tooling

Integrations

• HubSpot (CRM)
• Internal microservices and external partner APIs

What We’re Looking For

Required Experience

• 7+ years of backend or platform engineering experience
• Strong hands-on experience building production systems in AWS (serverless preferred)
• Proven experience designing and operating distributed, event-driven systems
• Experience building and maintaining API integrations with third-party platforms
• Experience owning systems end-to-end (design, delivery, operation, and iteration)

Technical Expertise

• Event-driven architectures and messaging systems (e.g. EventBridge, SQS, SNS, Kafka)
• Designing for failure retries, idempotency, backoff strategies, DLQs
• Observability, monitoring, and debugging in distributed systems
• Data modelling, transformation, and schema evolution across systems

Leadership & Collaboration

• Demonstrated ability to lead technical design and influence architecture
• Experience mentoring engineers and raising engineering standards
• Strong communication skills, with the ability to work across technical and non-technical stakeholders
• Comfortable operating in a fast-moving, evolving environment

Desirable Experience

• Experience integrating with CRM platforms (HubSpot preferred)
• Experience building or owning internal integration platforms
• Experience handling high-volume event ingestion or real-time data pipelines
• Familiarity with containerised services (e.g. Docker, ECS, Kubernetes)
• Experience with modern observability platforms (e.g. Datadog, OpenTelemetry)

Success in This Role

In your first 6–12 months, you will:

• Establish clear architectural patterns and standards for integrations
• Deliver scalable, reliable event-driven integration workflows
• Improve resilience across the platform
• Become a trusted technical leader within the business
• Ensure Data produced is sufficient for Board level analytics

Why Join Us?

• Opportunity to shape and lead enterprise-wide analytics strategy
• High visibility role with direct impact on business outcomes
• Collaborative, forward-thinking culture focused on innovation and growth