santosleijon.dev

Software Developer, Ida Infront AB

• Maintained and developed a Laboratory Information Management System (LIMS) for a Swedish government authority as a part of an application modernization program.

  Java
  J2EE/Jakarta EE
  JBoss
  MySQL
  Apache Wicket
  JavaScript
  REST
  SOAP
  OpenAPI Specification
  IntelliJ
  Message brokers
  Workflow engines
  Case management

Software Developer, Fortnox AB

• Developed Fortnox Business Mailbox, a new product aimed at small businesses used to receive government mail, supplier invoices and other sensitive business documents.

  Kotlin
  Java
  REST
  SOAP
  Apache Kafka
  PostgreSQL
  TypeScript
  React
  Redux
  HTML
  Docker
  Kubernetes
  Cucumber
  Selenium
  IntelliJ

• Maintained Fortnox Document Archive, a core legacy product used by more than 400 000 Fortnox customers to receive, process and archive business documents such as invoices and receipts.

  PHP
  PostgreSQL
  JavaScript
  Backbone.js
  Twig
  HTML
  Docker
  Kubernetes
  IntelliJ

Backend Developer, Verisure Innovation AB

• Lead the development of an integration service used to deliver invoices and direct debit payment files for more than 1 000 000 customers to banks and mail distributors across Europe.

  Java
  Spring
  JBoss / Wildfly
  SOAP
  T-SQL
  SAP Sybase ASE
  JSP
  HTML
  JavaScript
  jQuery
  IntelliJ

• Maintained a critical legacy monolith business system used to manage alarms, customer data and billing for over 1 000 000 customer in northern and central Europe.

  T-SQL
  SAP Sybase ASE
  Delphi / Object Pascal
  Bash
  Visual Studio Code

• Designed and developed new microservices as part of Verisure's technical transformation from a monolith architecture to microservices hosted in Kubernetes.

  Java
  Spring Boot
  REST
  Apache Cassandra
  API Gateway
  Docker
  Ansible
  Kubernetes
  IntelliJ

• Migrated mutliple organization's ERP data from a multi-tenant on-premise Microsoft Dynamics NAV installation to a global Oracle Fusion Cloud Applications instance.

  MS SQL Server
  SQL Server Management Studio
  PowerShell
  Visual Studio Code

Software Developer, UCS IT Solutions AB

• Developed integrations, migrations and custom extensions for ERP systems like Visma Business, Visma Administration and Fortnox.

  C#
  Windows Forms
  Entity Framework
  MS SQL Server
  Visual Studio

• Developed an email marketing tool for managing email campaigns, writing marketing emails and managing marketing segments.

  PHP
  Laravel
  REST
  MySQL
  Bootstrap
  jQuery
  Visual Studio Code

Founder & Web Developer (part time), SNTS Media

• Created and managed affiliate marketing websites receiving over 1 000 000 visitors and generating over 94,000 leads for advertisers.

  Wordpress
  PHP
  MySQL

• Developed multiple Wordpress plugins for dynamic ad placement, user tracking and for generating infographs.

  PHP
  SQL
  MySQL
  HTML
  JavaScript

Voidium Market

An event sourced and event driven experimental marketplace application for the fictional natural resource "voidium". Created for fun, not for actual use.

github.com/santosleijon/voidium-market

Frugal Fennec Expense Manager

An experimental single page web application for tracking expenses. It allows users to record expenses in a customizable accounts structure, view expense reports and login without a password using email verification. Created for fun, not for actual use.

github.com/santosleijon/frugal-fennec-expense-manager

Bachelor of Science in Economics, Linköping University

Bachelor of Political Science in Economics, Linköping University

Bachelor of Science in Engineering (swe: Högskoleingenjör i datateknik), KTH Royal Institute of Technology