Software Developer & Consultant

Allan Jensen

I am a full-stack developer with 24 years of rich experience, building anything from presentation websites to complex online software solutions. I love designing and building systems from the ground up, leveraging agile principles and modern AI-assisted tools to ensure efficiency and scalability.

I focus on delivering quality solutions — no dirty tricks and cutting corners that would ultimately cost the customer more. In a world where everything changes quickly, it's important to write code that is easy to understand, flexible, and prepared for future requirement changes. Planning, proper structuring, and effecient workflows are extremely important for meeting those conditions. If your infrastructure is badly designed, you will not be able to quickly refactor it to new requirements. User interfaces must also be carefully designed with the end-user in mind — something that is not a given for a programmer's mindset.

In addition, a company will already have existing systems running, and it is essential to integrate new systems with these as far as possible — otherwise more efficient daily routines are not achieved. I prefer to work with components offering full source-code access, providing the best opportunities for needed customizations. It is very often the small details that bring an application up to the desired quality for efficient workflows.

Beyond development, I have considerable experience in server management, particularly in Linux environments — from initial setup and configuration to maintenance and backup. I also have a keen interest in writing good, useful documentation.

For larger projects, I can assemble a dedicated team of experienced designers and developers, providing a solid and reliable support structure throughout the project.

I am passionate about my work and enjoy it every single day, and I believe in honesty and integrity.



DRAMMEN, NORWAY
RESIDENCE


NORWEGIAN / DANISH
NATIONALITY
DANISH native, ENGLISH fluent
NORWEGIAN professional working
GERMAN elementary proficiency
LANGUAGE

Work Experience

1998 - Present

Owner

WinterNet Studio

Norway

Development of many small and large web-based systems over the years as a freelancer. Lately event and access control systems (in connection with F1 and MotoGP in Malaysia), integrations with VoIP phone systems, insurance sales, etc.
Incorporated designers and other parties into projects when needed.
2022 - 2025

Freelance Web Developer

Insurance For Students

USA

Development and maintenance of online platform for managing student health insurance information, enrollment, waivers, and wellness resources.
Jan 2020 - 2022

Freelance System Developer / Back-End

WebbTrim

Sweden

Worked on a wide range of projects, from small WordPress websites to complex software solutions for major telecommunications and energy companies.
2016 - 2020 (still maintaining)

CIO/CTO / Developer

Swiftlayout

Denmark

Development of online layout platform for print products (swiftlayout.com) including production of low-cost photo books (seasonbooks.com)
Feb 2003 - 2015 (still maintaining)

Technical Development

ShareHim

USA

Full-time consultant responsible for all aspects of website development, including online and offline activation of software licenses, as well as integration with numerous other systems handling daily data flows. The website (sharehim.org), supporting around 20 different user types with varying permissions, manages all of the organization's activities, and comprises over 250,000 lines of handwritten code. I traveled extensively to the United States during this period.
1996 - 1998

Accounting and Administrative Assistant (Intern)

I/S FASAN

Næstved, Denmark

The goal was to gain broad practical experience in finance and administration, skills that are useful in any type of profession.

Education

2001 -

IT / Web Development

Autodidact / online

 

I have a strong passion for what I do, and most of what I know, I have learned on my own. Through focused self-learning, I have gained both practical experience and theoretical understanding, learned important principles, technologies, and best practices, and have been able to tackle tasks effectively. As a result, I was offered jobs in software development before I had the opportunity for formal education in the field.
1993 - 1996

Higher Commercial Education (HHx)

Køge Handelsskole

Denmark

Focus: Economics, IT, digital business understanding, sales & marketing

Skills

...

PHP

Composer
...

Javascript, Node.js

Vue.js, React, Lit, jQuery, D3.js (SVG manipulation), Web Components
...

Databases/SQL

MySQL, SQLite, Redis
...

Infrastructure

Setup/management of Linux servers
...

Servers, Deployment, Monitoring

Apache, Gitea, Jenkins, Ansible, SaltStack, Checkmk, Postfix, etc
...

Cloud Providers

Amazon Web Services (AWS) incl. Elastic Beanstalk, Linode.com, Hetzner Online, Simply.com
...

Virtualization

Docker, WSL, VirtualBox, Vagrant, ESXi, VMware
...

API/Web Services

REST, JWT, XML-RPC, SOAP, Google Docs API, Google Sheets API, Swagger/OpenAPI, etc.
...

MVC frameworks

Yii2, CakePHP 2 and 3
...

Content Management Systems

WordPress/WooCommerce, Joomla, Drupal, MediaWiki
...

Payment Solutions

Payment solutions with credit cards and PayPal (Denmark, Norway, Sweden, USA – Stripe, Braintree, Mollie, Swish, Authorize.net, Flywire/Invoiced)
...

Integration Experience

Social platforms, BankID, Salesforce, CiviCRM, MailChimp, Twilio, PostNord, Deutsche Post, DAO365, EFI Fiery digital printing, Zimbra, Leaflet, Google Maps, etc
...

WebSocket

WebSocket servers and clients, Server-Sent Events
...

Accounting/ERP

Odoo, QuickBooks
...

Mobile apps

Cross-platform with Appcelerator Titanium
...

VoIP

Asterisk/FreePBX VoIP
...

Software Licensing

Online license and activation systems
...

Code Protection

Compiling PHP with SourceGuardian
...

Version Control Systems

Git, Subversion
...

Lua

...

Raspberry Pi

Including I/O components
...

Label Printer Integration

Dymo, TSC, ZPL language
...

Adobe

Photoshop & InDesign Scripting
...

Office Documents

Automated generation of PDF (incl. PDFlib), Excel, Word, and PowerPoint documents
...

TV/video production

Streaming of audio/video, incl. Adobe Premiere, OBS, ProPresenter, NDI, VLC

Contact