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Jonathan Siles

@jonathansiles

Senior Middleware Engineer at Bananagun who built an integration pipeline that cut manual order processing by around 70%.

United Kingdom

Message

At Bananagun, I designed and built a middleware layer connecting legacy ERP systems with cloud services. For a client’s order processing, I developed integration pipelines between its CRM and fulfillment system, reducing manual intervention by around 70%.

Earlier, I built middleware integrations at TechNexia and Google, including an orchestration layer for billing services and microservices at Google. I also built an Order Sync Pipeline project that kept a client’s Shopify inventory in sync with its ERP, using RabbitMQ, Node.js, and idempotency keys to handle duplicate and out-of-order messages.

Experience

Work history, roles, and key accomplishments

Current

Senior Middleware Integration Engineer

Current

Bananagun

Mar 2022 - Present (4 years 7 months)

Designed and built a middleware layer connecting legacy ERP systems with cloud services using Apache Camel and RabbitMQ. Automated order processing between CRM and fulfillment systems, cutting manual intervention by 70% and reducing errors.

Apache Camel RabbitMQ Docker Kubernetes Prometheus Grafana Gitlab CI CI CD Process Automation System Integration

Middleware Integration Engineer

TechNexia

Jul 2019 - Feb 2022 (2 years 7 months)

Built an integration layer connecting a legacy ERP with a cloud-based CRM using Apache Camel and RabbitMQ, cutting manual data entry by 60%. Set up CI/CD pipelines with Jenkins and Docker and monitored services with Grafana and Prometheus.

Apache Camel RabbitMQ Jenkins Docker Grafana Prometheus CI CD Process Automation System Integration

Middleware Engineer

Google

May 2016 - Jun 2019 (3 years 1 month)

Built an orchestration layer connecting legacy billing services with microservices using Apache Kafka and Kubernetes. Automated reconciliation workflows, reducing operational errors by 40% and cutting release cycles from two weeks to three days.

Kafka Kubernetes CI CD Process Automation System Integration DevOps

Junior Middleware Integration Engineer

Codelaris

Jan 2015 - Apr 2016 (1 year 3 months)

Helped build a middleware layer connecting internal services with third-party APIs using Python and REST. Set up automated deployment pipelines with Jenkins and Docker and orchestrated data flows between systems.

Python REST APIs Jenkins Docker Process Automation System Integration