DAVID
ELFVING
LONG
I design and develop web and mobile applications from concept to deployment. Deep expertise in React, Node.js, and Microsoft 365. Building scalable, user-focused products across the full stack.
About
I'm a SharePoint specialist, Microsoft 365 consultant, and full-stack developer focused on delivering secure, scalable solutions that create measurable business value. With a strong foundation in systems science and hands-on experience across enterprise environments, I design and implement modern applications spanning SPFx, Power Platform, React, Next.js, Node.js, and TypeScript, bridging business needs and technical execution from architecture through delivery.
At Sogeti and now CGI, I've had the privilege of working alongside talented teams on complex architectural challenges. Those collaborations shaped how I approach problems and significantly deepened my technical judgment. I thrive when learning from others and delivering solutions that actually move the needle.
Projects
// PROJECTS LOADING...
Coming soon.
Skills
Certifications
- FUNDAMENTALS
MS-900 Microsoft 365 Fundamentals
- FUNDAMENTALS
PL-900 Power Platform Fundamentals
- FUNDAMENTALS
SC-900 Security, Compliance, and Identity Fundamentals
- ASSOCIATE
PL-400 Power Platform Developer Associate
- ASSOCIATE
PL-100 Power Platform App Maker Associate
- ASSOCIATE
AZ-102 Azure AI Engineer Associate
Experience
Master of Science Programme in Computing Science and Engineering
2016-2018Umeå
Advanced studies in data structures, algorithms, computational mathematics, low-level programming, and embedded systems. Developed strong analytical and technical problem-solving skills.
Study Programme in Systems Science with emphasis in Design, Interaction and Innovation
2019-2022Umeå
Studied information systems with focus on analyzing, designing, and implementing IT solutions. Thesis at Sogeti AB on management systems engagement. Expert in system analysis, process optimization, and user-centered design.
Sogeti AB
2022 - 2026Örnsköldsvik
Architected and built SharePoint intranets from the ground up for enterprise clients, designing complex M365 information architectures that scaled across organizations. Wore both the admin and developer hat: managing on-premises SharePoint farms, engineering custom .wsp solution packages and backend services deployed directly to the farm, and bridging legacy infrastructure into modern cloud ecosystems. Delivered production SPFx solutions, Azure-integrated services, and AI-driven automation pipelines with C# and Python. Shaped digital workplaces end-to-end through Power Platform workflows, custom React frontends, and hands-on cloud migrations.
CGI
January 2026 - PresentHybrid (Umeå)
Entrusted with full design and implementation ownership of greenfield M365 applications, taking solutions from concept to production as the sole developer. Building and shipping across SharePoint, Azure, and enterprise infrastructure with end-to-end technical and creative responsibility. Delivering complex SPFx builds, cloud-native integrations, and backend services that span frontend, infrastructure, and everything in between.
Contact
Contact me directly at davidelfvinglong@gmail.com or through this form.
