VK
Viktor Kjartansson

Hi, I'm Viktor
Senior Fullstack Developer

With over 25+ years of experience building software solutions. Viktor has over 25 years of experience as a fullstack developer, consistently holding roles with responsibility for architecture, development, and quality in projects.

25+

Years Experience

50+

Projects

80+

Technologies

9+

Companies

Areas of Expertise

Full-Stack Development

.NET Core, C#, Node.js, Kotlin on backend. React, Vue.js, Angular, TypeScript on frontend.

System Architecture

Solution architect and tech lead experience. Domain-Driven Design, microservices, and scalable systems.

Mobile Development

React Native, MAUI, Xamarin, iOS (Swift/Objective-C). Published apps on App Store and Google Play.

Cloud & DevOps

Microsoft Azure, AWS, Google Cloud, DigitalOcean. CI/CD pipelines and infrastructure automation.

Databases

SQL Server, PostgreSQL, MongoDB, Oracle, Firebase. Database design and optimization.

Industries

Public sector, banking, energy, oil & gas, healthcare, maritime, e-commerce.

Key Projects

03.2023 - 09.2025Fullstack Developer & Mobile Developer

iCORE System

Apto AS

Modular platform for project management in oil and energy sector with complex shift patterns. Built Extensions for data flow between iCORE and ERP systems (SAP, Tripletex, Visma Business Next, 4Human). Developed mobile apps for time registration using .NET MAUI.

.NETMAUIBlazorSQL Server
04.2022 - 01.2023Frontend & Backend Developer

Min side for sjøfolk

Sjøfartsdirektoratet

Web solution for handling personal certificates for maritime workers. Modernization of existing functionality with React frontend and .NET backend. Team of 9 using Scrum methodology.

ReactTypeScript.NET CoreAzure DevOps
11.2019 - 03.2022Technical Architect & Fullstack Developer

Tripletex Project Management

Elverhøy Aluminium og Glass

Web-based project management solution integrated with Tripletex ERP. Color-coded status views for project oversight. Real-time messaging via Socket.IO. Deployed on DigitalOcean with Docker Compose.

Vue.jsNode.jsMongoDBSocket.IO
11.2018 - 09.2019Architect & Mobile Developer

IDLock 150 Firmware Update App

IDLock AS

Mobile app for iOS and Android for firmware updates of IDLock 150/202 door locks via Bluetooth Low Energy. Scans for BLE devices and performs OTA updates.

React NativeiOSAndroidBluetooth LE

Career Timeline

12.2025 - Present

Senior Fullstack Consultant

Crayon Consulting

Fullstack development consulting services for enterprise clients.

03.2023 - 09.2025

Senior Fullstack Developer

Apto AS

Developed iCORE, a modular platform for time-intensive and project-oriented businesses in the oil and energy sector. Built Extensions for data flow between iCORE and ERP systems (SAP, Tripletex, Visma Business Next, 4Human). Developed mobile apps for time registration using .NET MAUI.

12.2018 - 01.2023

Senior Fullstack Developer

Geysir IT AS

Consulting services for various clients including Sjøfartsdirektoratet (Min side for sjøfolk), Elverhøy aluminium og glass (Tripletex integration), and IDLock (firmware update app).

11.2016 - 11.2018

Senior Fullstack Developer

7N AS

Consulting for Norwegian Air Shuttle (norwegian.no website) and Norsk brannvernforening (certificate app for hot work professionals).

01.2013 - 09.2016

Senior Developer

Agitec AS

Development for Helsedirektoratet (Helsenorge.no), Bærum Kommune (Oracle E-Business Suite), Hafslund Strøm (customer portal), and Patentstyret (notification portal).

Technology Stack

Backend

.NET CoreC#Node.jsKotlinJavaPythonASP.NETNestJSExpress.jsSpring

Frontend

ReactVue.jsAngularTypeScriptJavaScriptTailwind CSSBootstrapHTML5CSS3

Mobile

React NativeMAUIXamariniOS (Swift/Objective-C)Android (Kotlin)Bluetooth Low Energy

Cloud & DevOps

Microsoft AzureAWSGoogle CloudDigitalOceanDockerKubernetesAzure DevOpsGitHub Actions

Databases

SQL ServerPostgreSQLMongoDBOracleFirebaseRedisSupabaseEntity Framework

Let's Build Something Amazing

I'm always interested in hearing about new projects and opportunities. With 25+ years of experience across multiple industries, I can help bring your vision to life.