Benjamin Jönsson De Castro

Bringing the cloud down to earth.

I am a cloud engineer and developer dedicated to staying up-to-date with the latest trends in cloud technology. On the cloud infrastructure side, I’m proficient with AWS, GCP, terraform and serverless technologies. On the backend development side, I’m proficient in building REST APIs and event driven architecture using TypeScript, JavaScript, .Net and Python. I love designing and building cloud solutions that are maintainable, robust and cost-efficient. I am always open to exploring new ideas and solutions and am known for my willingness to help others.

SKILLS

AWS

GCP

GCP Cloud Build

CI/CD Pipelines

DNS

AWS Code Build

Github Actions

AWS CDK

Terraform

Jenkins

Azure

MS Entra ID (Azure AD)

Git

Javascript

Typescript

NodeJS

Express.js

REST API

Linux

Windows Server

.Net

DynamoDB

Firestore

SQL

AWS API Gateway

Lambda

Docker

Python

Open AI

React

HTML/CSS

APTITUDES

EXPERIENCE

Backend developer
June 2024 - August 2024
Norion Bank AB
Customer Project
As a Backend Developer at Norion Bank AB, I have been developing a modern integration solution designed to sync employees and groups between the customers HR systems and their Windows Active Directory and Azure Entra ID within a hybrid server environment.

My focus has been building a secure solution that ensures scalability and maintainability for future growth, while using cloud-only solutions for Entra ID to prepare the customer for a cloud native future.
Skills: C#, .NET Core, Entra ID (Azure AD), MS Graph API, API-driven provisioning, Integration, Azure SQL, Azure Key Vault, Azure Container Apps, Windows Server, Hybrid Server Environment, Testing
Fullstack Developer & Cloud Engineer
March 2024 - Current
Geshdo Now AB
Internal Project, Part-time
I'm working on extending the SalesNow product. A custom business system used to track sales oppertunities.
Skills: C#, TypeScript, .NET Core, Entity Framework, PostgreSQL, React, Docker GCP, CI/CD, Testing, Azure Apps
Cloud Engineer & Backend Developer
December 2023 - March 2024
Geshdo Now AB
Internal Project, Part-time
I worked on a internal tool use to automate and improve the onboarding process at Geshdo. The tool is integrated with Microsofts Graph API to manage users in Entra ID and programmatically sending email.
Skills: Typescript, GCP, Docker, CI/CD, Express JS, MS Entra ID (Azure AD), MS Graph API
Cloud Engineer
July 2021 – December 2023
Stepstone
Customer Project
I was the main cloud engineer working with an innovative team at Stepstone's Emerging Tech unit. I help facilitate new innovative prototypes for the job-tech industry with a focus on GPT-3, AI, and the most modern web technologies. My role primarily involves creating designs and setting up cloud infrastructure and building backends. I also research new tech and write documentation about my findings.

Example of a project I have helped build involved a service to ingest CVs and analyze them with the help of OpenAI. I created the design of the cloud infrastructure and then built a secure backend to store and retrieve the CVs and results from OpenAI.
Skills: Typescript, Javascript, AWS, GCP, Node JS, REST APIs, CDK, Terraform, CloudFormations, DynamoDB, API Gateway, Lambda, DNS, Docker, CI/CD Pipelines, Nginx, OpenAI, LLM, Cloud Run, Cloud Functions, GCP load balancer, Azure AD, Okta, AWS Cognito, Python, Documenting, Drawing Technical diagrams
Cloud Engineer
April 2021 – Current
Geshdo Now AB
Employment
When not working directly with customers, I'm helping developers and management with daily IT. Improving internal security in the cloud.
Skills: Azure AD, Office 365 (admin), DNS, Security
Consulting Third-line Support
March 2018 – March 2021
QSI Sweden AB
Employment
Working for an IT provider helping our small-medium customers with daily IT support in the Windows ecosystem. Worked my way up from first to third-line support, helping and troubleshooting issues from Office 365 to server crashes.
Skills: Customer Support, Active Directory, Windows Server, Azure, Azure AD, DNS, PowerShell