Sandhjé Bouw

Freelance developer

Senior full-stack software developer, specialized in building web applications

Download resume
Logo 0Logo 1Logo 2Logo 3Logo 4Logo 5Logo 6Logo 7Logo 8Logo 9

About me

Summary

I am a software developer with 18 years of diverse experience across various roles and projects. Over the course of my career, I have served as a tech lead, security specialist, software architect, and senior developer. I’ve had the privilege of successfully delivering projects for clients ranging from small startups to multinational corporations, gaining a deep technical foundation and practical expertise along the way.

My specialties include designing and implementing innovative solutions across front-end, back-end, and cloud environments. I’m passionate about crafting elegant, efficient, and maintainable code while focusing on key software traits such as reliability, security, maintainability, and resilience. I also enjoy mentoring teams and sharing knowledge to foster collaborative growth.

My primary focus is collaborating with clients on their projects as a freelance developer, specializing in C# .NET, Node.js, React, and Angular. Alongside client work, I dedicate time to personal side projects that allow me to explore new ideas and emerging technologies. My services include full-stack development and security consultation, tailored to businesses of all sizes.

If you’re looking for a dedicated, experienced developer to bring value to your project, let’s connect. I’m available during the week to discuss your development needs and offer expert advice.

Skills

Back-end

.NET
Node.js
SQL
NoSQL
Azure
AWS
Docker

Front-end

React
Angular
Webcomponents

Others

DevOps
Team lead
Software architect
Red team- & pentesting
Test driven development

Strengths

  • T-shaped skillset - Deep knowledge of backend- and frontend development in C# and Typescript, combined with broad knowledge of many other languages e.g. java, python, php, etc.
  • Solution Architect - Hands-on experience in designing reliable, performant and secure software at an enterprise level.
  • Team lead - Good communication, collaboration and organization skills.
  • Security / pentesting - Extensive experience in red team- / pentesting and online security.
  • Versatile - Experience in many different roles and sectors like Financial Technology, Telecommunications, Educational Technology and E-Commerce.

Education

December 2015 - December 2016

Software engineering.

Open Universiteit. Heerlen.

August 2002 - June 2006

Industrial automation.

ROC ter AA. Helmond.

August 1998 - June 2002

MAVO.

Macropedius college. Gemert.

Certificates

Microsoft Certified Professional
Microsoft Certified Professional
September 2015
Zend Certified PHP Engineer
Zend Certified PHP Engineer
November 2014

Career path

8

2017 - present

Senior software developer

Freelance

3

2014 - 2017

Software developer

Emmia educatieve multimedia

3

2011 - 2014

Lead web developer

VisionEars reclame & media

5

2006 - 2011

Web developer

InterPoint computers

Hobbies & languages

Coding
Coding
Whisky
Whisky
Futsal
Futsal
Hiking
Hiking
Travelling
Travelling
Dutch
Native speaker
English
Full professional proficiency
Portuguese
Full professional proficiency
Spanish
Limited working proficiency
French
Limited working proficiency

Projects

Select one or more tags...

Alpina business insurance platform

Alpina business insurance platform
C#
.NET 8
Azure
Angular
Docker
RabbitMQ
MsSQL
Serverless
REST

Project description:

Development of a new platform for business insurance within Alpina. This platform includes both integration with existing administrative systems and a completely new back office and front office. The front-end of both applications is built using Angular and integrates with several new APIs developed in C#.

Role:

Developer within a SCRUM team

Period:

juli 2024 - maart 2025

Alpina income insurance backoffice

Alpina income insurance backoffice
C#
.NET 8
Azure
Snowflake
ELT
MsSQL
Serverless
REST

Project description:

Design and development of a new backoffice for business income insurances within Alpina. This backoffice is responsible for processing employee absence data and updates to employee records, as well as managing financial processes and communication with policyholders. Key requirements for the project included traceability of all processes, recoverability in case of issues, and security due to the handling of sensitive customer data.

Role:

Team lead of a SCRUM team

Period:

juli 2023 - februari 2024

Alpina API platform

Alpina API platform
C#
.NET Core
Java
Typescript
NodeJS
Docker
Azure
REST
SOAP
OAuth
Active Directory

Project description:

Maintenance and further development of Alpina's API platform. Alpina's API platform encompasses all overarching infrastructure for external and internal users of the more than 70 APIs developed and maintained within Alpina. This platform is responsible for authentication, authorization, throttling, license management, lifecycle management, and more. Additionally, the maintenance and development of various tools and infrastructure to support other development teams within Alpina were part of this project.

Role:

Developer within a SCRUM team

Period:

november 2021 - juli 2023

Voogd Voordeelpakket rekenengine

Voogd Voordeelpakket rekenengine
C#
.NET Framework
MongoDB
RabbitMQ
InRule
REST
SOAP

Project description:

Maintenance and further development of the calculation engine for the "voordeelpakket," a tool for insurance advisors to quickly compare products and coverages from different insurers.

Role:

Developer within a SCRUM team

Period:

juli 2021 - november 2021

Zwijsen Educatief Platform

Zwijsen Educatief Platform
C#
.NET Framework
DITA XML
XSLT
Typescript
Webcomponents
REST

Project description:

The Zwijsen Educational Platform is a digital platform, or framework, on which the educational applications of Uitgeverij Zwijsen are built. Within this project, I contributed broadly to both the front end and back end. This included setting up new platform infrastructure, such as an async task runner, as well as maintaining and improving existing infrastructure, such as integration with the DITA content repository. The front-end work involved creating and maintaining multiple Single Page Applications using TypeScript and Web Components.

Role:

Developer within a SCRUM team

Period:

juni 2018 - juli 2021

What others say

Contact

Contact information

Hemelrijksdijkje 5

5701MC, Helmond

31 (0)6 383 222 75

sandhje@ecodes.io

linkedin.com/in/sandhje

KVK: 66532817

BTW: NL002191733B08