Alexandru Gunescu

In my role as Lead Cloud Architect for BP, oil and gas company I had the mission to migrate the Electric Vehicle Charging SaaS App of the EV Division, from On-Premises and Azure to AWS Cloud, resulting in a hybrid multi-cloud multi-tenant solution.

Addressing the need to ingest near real-time data from physical Charge Point Operators, serving as IoT devices, via the OCPI protocol, we encountered significant delays with batch processing, rendering it inefficient for many use cases. As a consequence, we developed a new streaming data pipeline using AWS MSK for Apache Kafka, while prioritizing an event-driven architecture.

By adopting this approach, we ensured that tenants could ingest and process data in near real-time, thereby enhancing the responsiveness and efficiency of the application. Deployment with Kubernetes for the Application layer entailed provisioning Kubernetes clusters managed by AWS EKS, with a focus on integrating them into a Multi-Tenant Environment. This integration was achieved by utilizing Kubernetes namespaces and access controls to ensure data isolation and privacy enforcement. In the database layer, we opted for an RDS instance with SQL Server to support the backend infrastructure of our applications. Tenants shared the same RDS instance, but each has a dedicated schema. We initiated a migration process from both on-premises and Azure environments to Amazon Web Services (AWS) using services like AWS DataSync, AWS Snowball, and AWS Database Migration Service (DMS). I took charge of orchestrating collaboration across a diverse ecosystem of more than five systems, vendors, and service providers, in addition to coordinating with on-site teams. I ensured alignment and synergy among all stakeholders involved in the project. This included coordinating with various internal teams, external vendors, cloud service providers, and other third party entities to seamlessly integrate their contributions into our solution.

As Lead Cloud Solution Architect for Brand Retail Execution at LEGO, I led the team of application engineers that design, build and operate Assortment Management platform on LEGO.com, the LEGO Group's direct to customer e commerce flagship. My role is focused on leading, coaching and mentoring the team as well as

driving innovation and a strong engineering culture throughout the organization. I worked closely with solution architects, infrastructure engineers, product owners, agile coaches and other senior business stakeholders to define the technical solution and ensure the engineering team delivered a world-class shopper experience. I am responsible for the end-to-end software engineering, composable solution architecture and operational excellence of the high availability, low latency, distributed systems and services that form the LEGO.com technology platform and the global online payment services platform for the LEGO Group all running in the public cloud with AWS.

Responsabilities:

• ● Lead, coach, and mentor a team of application engineers, fostering a culture of innovation, continuous learning, and strong engineering practices.

• ● Collaborate with solution architects, infrastructure engineers, product owners, and senior business stakeholders to define and implement technical solutions aligned with business goals.

• ● Define and oversee the composable solution architecture for the Assortment Management platform on LEGO.com, ensuring scalability and performance for a world-class shopper experience.

• ● Direct the end-to-end software engineering process for high availability, low latency, and distributed systems running on AWS.

As a freelance lead, I was asked to help rebuilding and refactoring the Atfarm web app. Atfarm allows you to monitor your crops growth combining the N-

Sensor Index with satellite imagery. Monitor the variability during all stages of growth. Atfarm basically helps you monitor the growth of your fields with satellite images. One of the main key Contribution was to lead the successful digital transformation of Atfarm app by designing and leading the implementation of a highly available, fully composable, serverless commerce architecture based running on an AWS cloud infrastructure. The project was cut into several sub-projects and started with implementing the cloud infrastructure on AWS and refactoring of the client app in June 2020. By the end of the year the app been completely redesigned and with a new tech stack, cloud design.

Responsibilities:

• ● Led the digital transformation of the Atfarm web app by designing and implementing a highly available, serverless, and fully composable architecture on AWS.

• ● Managed and coordinated the project lifecycle, from cloud infrastructure implementation to final app redesign and refactoring.

• ● Designed and implemented scalable, secure, and high-performance cloud infrastructure using AWS services to support Atfarm's crop monitoring features.

• ● Refactored the Atfarm client app to enhance performance, user experience, and reliability, ensuring seamless integration with satellite imagery and N-Sensor Index data.

• ● Collaborated with cross-functional teams, including developers, designers, and product managers, to ensure alignment with business goals and technical requirements.