Björn Wilmsmann - Software Audit and Architecture Consulting: Portal Software

Q: Where is Björn based?

Björn is based in Oberhausen, Germany and prefers 100% remote projects.

Q: What languages does Björn speak?

Björn speaks the following languages: German (Native), English (Native), Dutch (Advanced), Spanish (Intermediate), French (Intermediate) .

Q: How many years of experience does Björn have?

Björn has at least 15 years of experience. During this time, Björn has worked in at least 25 different roles . The average length of individual experience is 1 year and 7 months . Note that Björn may not have shared all experience and actually has more experience.

Q: What is Björn's latest experience?

Björn's most recent position is Software Audit and Architecture Consulting: Portal Software .

Q: Which industries is Björn most experienced in?

Björn is most experienced in industries like Information Technology , Manufacturing , and Healthcare . Björn also has some experience in Media and Entertainment , Banking and Finance , and Transportation .

Q: Which business areas is Björn most experienced in?

Björn is most experienced in business areas like Information Technology , Product Development , and Quality Assurance . Björn also has some experience in Business Intelligence , Finance , and Accounting .

Q: Which industries has Björn worked in recently?

Björn has recently worked in industries like Information Technology , Media and Entertainment , and Manufacturing .

Q: Which business areas has Björn worked in recently?

Björn has recently worked in business areas like Information Technology , Product Development , and Quality Assurance .

Recommended expert

Oberhausen, Germany

Check rate

Experience

Jan 2023 - Dec 2023

1 year

Software Audit and Architecture Consulting: Portal Software

I conducted a software audit and architecture consulting for an existing portal software for infrastructure provisioning at a company that offers virtual reality environments.
Role: Mentoring and Consulting
Technologies used: Java

Jan 2021 - Present

5 years 6 months

Consulting and Mentoring: eCommerce Platform for Order Processing

I support a publishing house that offers online publications through various eCommerce business models in the development of a new platform for processing orders.
Role: Consulting and Mentoring
Technologies used: AWS, Java, Spring Boot, Microservices

Jan 2021 - Dec 2021

1 year

Mentoring and Consulting: Updating Front-End Applications for Document Management

I advised a company that develops document management software on migrating various front-end components to the latest Angular and PrimeNG versions.
I guided the company's developers on approaches and best practices for carrying out this migration.
Role: Mentoring and Consulting
Technologies used: Angular, PrimeNG

Jan 2020 - Dec 2024

5 years

Development and Consulting: HMI for Machine Control

For a mechanical engineering company, I am developing a new HMI for machine control.
Role: Development and Consulting
Technologies used: React, Material-UI, Express, Node.js, JavaScript

Jan 2020 - Dec 2023

4 years

Author: Stratospheric - From Zero to Production with Spring Boot and AWS

Together with two other authors, I published an eBook titled “Stratospheric - From Zero to Production with Spring Boot and AWS” in mid-2021. This eBook is a comprehensive guide to developing and deploying Spring Boot applications in AWS cloud environments.
Role: Author
Technologies used: AWS, CDK, Spring Boot, Java

Jan 2020 - Dec 2021

2 years

Development and Mentoring: Demand Planning Application

I supported a billing company in the healthcare sector in implementing a demand planning application.
I mentored developers in using new software technologies used to build this application.
Role: Development and Mentoring
Selected technologies: Angular, TypeScript, Jasmine, Protractor, Karma, Java, Spring Boot

Jan 2019 - Dec 2019

1 year

Development and Consulting: Configurator for Variant Management (CPQ, PIM)

I supported a provider of variant management software (CPQ, PIM) in developing a rule-based configurator.
Role: Development and Consulting
Selected technologies: jQuery, Node.js, SheetJS, jQuery-csv, HTML, CSS

Jan 2018 - Dec 2019

2 years

Design and Development: Construction Site Management Software

For a company offering construction site management software, I designed and developed modules for use in a mobile application.
Role: Design and Development
Selected technologies: JavaScript, Ext JS, Apache Cordova

Jan 2018 - Dec 2019

2 years

Development and Quality Assurance: Application for Recording and Accounting of Fringe Benefits

For an insurance company, I developed a web-based application for recording and accounting of fringe benefits.
Role: Development and Quality Assurance
Selected technologies: Java, Spring, Spring Boot, Hibernate, JUnit, Angular 2, TypeScript, Karma, Jasmine, Protractor, PostgreSQL, Docker, Amazon Web Services

Jan 2018 - Dec 2019

2 years

Mentoring and Consulting: Application for Coordinating Billing Processes

I supported a billing company in the healthcare sector in implementing an application for coordinating billing processes.
I mentored developers in using new software technologies with which this application is built.
Role: Mentoring and Consulting
Selected technologies: Angular, TypeScript, Jasmine, Protractor, Karma, Java, Spring Boot

Jan 2017 - Present

9 years 6 months

Workshops: Spring Boot / Spring Cloud

In collaboration with an IT workshop provider, I deliver workshops on Spring Boot and Spring Cloud.
Role: trainer and concept design
Technology selection: Java, Spring, Spring Boot, Spring Cloud

Jan 2017 - Dec 2018

2 years

Conceptualization and Development: Mobile Service App

For a drive technology provider, I designed and developed a mobile app for field service requests.
Role: conceptualization and development
Technology selection: Ionic, Angular 2, TypeScript, Swift, Xcode

Jan 2017 - Dec 2017

1 year

Development: eCommerce / PIM Solutions

For a provider of eCommerce/Product Information Management (PIM) systems, I implemented microservice-based solutions that extend existing applications and add new functionality.
Role: development
Technology selection: Java, Docker, Spring, Spring Boot, Spring Integration, Apache POI, Mockito, REST Assured, RabbitMQ, JavaScript, JSON Schema, Hybris

Jan 2017 - Dec 2017

1 year

Conceptualization and Development: Search Solution for Variant Management (CPQ, PIM)

For a provider of variant management software (CPQ, PIM), I designed and developed a search solution based on Elasticsearch.
Role: conceptualization and development
Technology selection: Java, Elasticsearch, Spring, Spring Boot, JUnit, Mockito, REST Assured

Jan 2017 - Dec 2017

1 year

Mentoring and Consulting: Software for Sales Systems (POS)

I advised a provider of sales system software (POS) in the logistics sector on selecting new front-end technologies and on quality assurance in software development (testing, continuous deployment).
Role: mentoring, quality assurance, and consulting
Technology selection: Angular 2, TypeScript, AngularJS, Jasmine, Protractor, Karma

Jan 2016 - Dec 2019

4 years

Mentoring, Consulting and Development: Logistics and Compliance Management Software

I advised a logistics and compliance management software provider on improving quality assurance processes in software development (testing, database migration, continuous deployment).
Role: Mentoring, quality assurance, and development
Tech stack: Java, Spring, JPA, JUnit, Mockito, Flyway, Spring Batch, Angular 2, TypeScript, Cucumber, Docker

Jan 2016 - Dec 2017

2 years

Medical Information Systems

I helped a medical information systems provider review and refactor the software architecture used for developing application modules.
I improved the framework used to develop the client's various products in terms of maintainability and reliability.
Role: Architecture and development
Tech stack: JavaScript, AngularJS, Jasmine, Karma, TypeScript

Jan 2016 - Dec 2016

1 year

Serialization Solution

For a company offering scalable serialization solutions, I developed user-friendly UIs and improved the UX of the existing application.
Role: Design and development
Tech stack: Java, Spring, JPA, Vaadin

Jan 2015 - Dec 2016

2 years

Mentoring and Development: Public Administration Software

I took part in developing the next product version at a public administration software provider.
At the same time, I trained the developers there in various frontend technologies—mainly AngularJS and JavaScript—and how they integrate with Java backend applications.
Role: Mentoring and development
Tech stack: Java, Spring, Hibernate, JavaScript, AngularJS, Lucene, Solr

Jan 2015 - Dec 2015

1 year

ERP System for eCommerce Applications

For a US-based eCommerce company in the apparel sector, I developed a web-based ERP solution to manage and process goods inflow and outflow, inventory, and individual stock levels for different products, locations, and sales channels.
Role: Architecture, development, and design
Tech stack: Java, Spring Web MVC, Spring Boot, JavaScript, AngularJS

Jan 2014 - Present

12 years 6 months

ZenQuery

ZenQuery is an Enterprise Backend as a Service.
ZenQuery provides you with an instant REST API for your SQL queries. Anything that can be expressed by SELECT * FROM ... ZenQuery turns into a conveniently accessible API.
Role: Entrepreneur, Developer, Product Designer
Technologies used: Java, Spring Web MVC, JavaScript, AngularJS, PostgreSQL, various database connectors, Heroku

Jan 2014 - Dec 2017

4 years

Controlling application for analyzing receivables and liabilities

For a renowned consulting firm in the controlling industry, I developed a web application that can perform working capital and cash flow analyses.
The application visualizes results using various dynamically generated charts and allows flexible Excel data import and export.
Role: Development and design
Technologies used: Java, Spring Web MVC, JavaScript, AngularJS, NVD3, D3.js, Chart.js, Excel interfaces (import / export), PostgreSQL

Jan 2014 - Dec 2015

2 years

Freshcard

Freshcard is a digital business card distribution platform. Freshcard allows you to easily connect and exchange contact information with business contacts.
The web application allows you to manage your contact details and create your individual business card layout in the browser (using HTML5 and SVG).
The accompanying iPhone app lets you connect with people right when you meet them.
Role: Entrepreneur, CTO, Developer, Product Designer. In addition to product design and development, my main responsibility as CTO was to coordinate a team of developers, designers, and service providers to ensure that new product versions were delivered on schedule and met quality standards.
Technologies used: Java, Spring Web MVC, JavaScript, AngularJS, Fabric.js, SVG, PostgreSQL, iOS, Swift, Multipeer Connectivity, vCard, Heroku

Jan 2013 - Dec 2014

2 years

MemoEasy

Missed appointments are a significant problem for many companies. MemoEasy solves this problem by allowing companies to manage their appointments online and reminding customers by SMS or email shortly before an appointment.
Role: Entrepreneur, CTO, Developer, Designer
Technologies used: Ruby on Rails, PostgreSQL, Twilio, Heroku

Jan 2011 - Dec 2015

5 years

Applications for consumer and corporate loan application and processing

For an international bank, I worked in a team of six developers to build various enterprise web applications through which both merchants and end customers can apply for loans.
These applications also handle further processing of applications and customer contacts.
A service-oriented architecture connects numerous backend systems, e.g., core banking systems and risk assessment.
Role: Development and design
Technologies used: Java, Spring, Hibernate, SOAP, WebSphere, JMS, Socket Services, Oracle Database, Lucene

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Manufacturing, Healthcare, Media and Entertainment, Banking and Finance, and Transportation.

Information Technology

Manufacturing

Healthcare

Media and Entertainment

Banking and Finance

Transportation

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Quality Assurance, Business Intelligence, Finance, and Accounting.

Information Technology

Product Development

Quality Assurance

Business Intelligence

Finance

Accounting

Languages

German

Native

English

Native

Dutch

Advanced

Spanish

Intermediate

French

Intermediate

Statistics

Experience

Total positions 25

Experience in Information Technology 13.5 y

Avg length 2 y 11 m

Longest experience 12 y 5 m

Expertise

Recent roles Software Audit and Architecture Consulting: Portal Software, Consulting and Mentoring: eCommerce Platform for Order Processing, Mentoring and Consulting: Updating Front-End Applications for Document Management

Main industries Information Technology, Manufacturing, Healthcare

Main business areas Information Technology, Product Development, Quality Assurance

Profile

Created

July 2025

Last Update

June 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Björn based?

Björn is based in Oberhausen, Germany and prefers 100% remote projects.

What languages does Björn speak?

Björn speaks the following languages: German (Native), English (Native), Dutch (Advanced), Spanish (Intermediate), French (Intermediate).

How many years of experience does Björn have?

Björn has at least 15 years of experience. During this time, Björn has worked in at least 25 different roles. The average length of individual experience is 1 year and 7 months. Note that Björn may not have shared all experience and actually has more experience.

What roles would Björn be best suited for?

Based on recent experience, Björn would be well-suited for roles such as: Software Audit and Architecture Consulting: Portal Software, Consulting and Mentoring: eCommerce Platform for Order Processing, Mentoring and Consulting: Updating Front-End Applications for Document Management.

What is Björn's latest experience?

Björn's most recent position is Software Audit and Architecture Consulting: Portal Software.

Which industries is Björn most experienced in?

Björn is most experienced in industries like Information Technology, Manufacturing, and Healthcare. Björn also has some experience in Media and Entertainment, Banking and Finance, and Transportation.

Which business areas is Björn most experienced in?

Björn is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Björn also has some experience in Business Intelligence, Finance, and Accounting.

Which industries has Björn worked in recently?

Björn has recently worked in industries like Information Technology, Media and Entertainment, and Manufacturing.

Which business areas has Björn worked in recently?

Björn has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.

What is the availability of Björn?

Björn is immediately available part-time for suitable projects.

What is the rate of Björn?

Björn's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.