Hi, I'm Jim!

Senior Software Engineer: Full-Stack & Infrastructure

Bridging the gap between complex infrastructure and modern frontend experiences.

Technical Skills

A comprehensive overview of my technical expertise across the stack.

Frontend Development

ReactNext.jsTypeScriptJavaScriptHTML5CSS3Tailwind CSSBootstrapjQueryFluid DesignCSS GridFlexboxResponsive DesignMobile-FirstUI/UX DesignComponent ArchitectureState ManagementJSXDOM ManipulationAccessibility (WCAG)

Infrastructure & System Administration

Linux System AdministrationDockerKubernetesProxmoxKVMVirtualizationCloud InfrastructureAWSCI/CDInfrastructure as Code (IaC)NginxApacheAnsibleTerraformMicroservices ArchitectureServerlessLoad BalancingSystem Monitoring & LoggingShell ScriptingBashInfrastructure SecurityPerformance Optimization & TuningBackup SolutionsHigh AvailabilityDisaster Recovery

Networking

Network EngineeringNetwork ArchitectureNetwork SecurityCisco IOSCisco DNACisco ISERoutersSwitchesVPNTCP/IPDNSDHCPFirewall ConfigurationNetwork TroubleshootingIPv4/IPv6VLANBGPNetwork MonitoringSoftware-Defined Networking (SDN)Network AutomationWireless NetworksMesh NetworksOpenWRT

AI & Machine Learning

Large Language Models (LLMs)Prompt EngineeringDeep LearningNeural NetworksAI IntegrationMachine Learning ApplicationsPython (ML)TensorFlowComputer VisionData Analysis & VisualizationJupyter Notebooks

Tools & Technologies

GitGitHubGitLabVS CodeNode.jsREST APIsAPI DevelopmentGraphQLJSONXMLJIRAConfluenceDocker ComposeSSH/SCPCron/Scheduled TasksLog Management (ELK Stack)API Design & DocumentationOAuth 2.0JWT

Methodologies

AgileScrumDevOpsTest-Driven Development (TDD)Unit TestingCode ReviewVersion ControlDocumentationProblem SolvingMentoringStakeholder CommunicationCross-functional Collaboration

IoT & Embedded

Embedded SystemsIoT SolutionsHardware IntegrationSensor NetworksMicrocontrollersRaspberry PiArduino

Security

CybersecurityIncident ResponseSecurity OperationsThreat AnalysisVulnerability AssessmentSecurity Best PracticesIdentity & Access Management

Database & Data

Database DesignQuery OptimizationSQLPostgreSQLMySQLMongoDBRedisMemcachedSQLiteNoSQL DatabasesData ModelingData Migration

Web Performance

Page Speed OptimizationCDN Implementation (Cloudflare)Caching StrategiesImage OptimizationWeb Vitals

About Me

I am a Senior System Administrator with a strong Network Engineering background and over 10 years in IT. Currently studying an intensive front-end course at Lexicon in Stockholm (2025-2026), bridging my engineering expertise with modern web technologies. My career spans from entrepreneurship and freelancing to senior roles at Northvolt, where I led complex network infrastructure projects, and extensive system administration at eCiceron handling embedded systems and IoT security. I excel at third-party integrations, system automation, and mentoring team members. I specialize in Linux environments, virtualization, containerization with Docker and Kubernetes, and building robust, scalable solutions. In my spare time, I explore AI applications, home automation systems, and electronic projects.

Work Experience

Senior Network Engineer

Northvolt AB, Skellefteå
Jan 2022 - Mar 2024
  • Implemented robust industrial network solutions for large-scale projects.
  • I planned on-site infrastructure changes and led advanced troubleshooting with international suppliers and internal teams, ensuring our network strategy met tight deadlines and improved overall operations and documentation.

Technologies & Skills

Industrial NetworksNetwork InfrastructureCiscoNetwork DesignLarge-Scale ProjectsNetwork DocumentationTroubleshootingInternational CollaborationProject ManagementProcess AutomationIndustrial NetworkingWiFiNetwork MonitoringSCADA

Senior System Administrator / Network Administrator

eCiceron AB, Stockholm
Jan 2021 - Dec 2024
  • In this multifaceted role, I handled security, systems, and networking for embedded and IoT devices.
  • I developed robust administration processes, provided second-line incident response, and advised clients on complex technical issues.
  • Additionally, I led the development of internal systems using Docker, Kubernetes, and Proxmox, and served as a Cyber Defense Incident Responder.

Technologies & Skills

DockerKubernetesProxmoxCyber DefenseIncident ResponseSecurity OperationsIoT SecurityEmbedded SystemsSystem ArchitectureClient ConsultingSecond-Line SupportEmbedded LinuxReal-time Systems

Server Technician / Network Engineer

Portlane AB, Stockholm
Sep 2014 - May 2017
  • Led and collaborated with teams on network projects focused on server and network architecture, security, and performance optimization.
  • Administered Cisco routers and switches, including configuration, management, and troubleshooting.
  • Performed on-site work at datacenters, including racking, cabling, and connecting servers, switches, and customer equipment.
  • Developed tools and methods to streamline provisioning of new clients, servers, and solutions.

Technologies & Skills

Cisco NetworkingServer ArchitectureNetwork SecurityPerformance OptimizationDatacenter OperationsProvisioningAutomationTeam LeadershipCablingInfrastructure DeploymentData CenterNetwork Automation
  • Managed comprehensive stage and event safety protocols, including crowd control and perimeter security for large-scale events.
  • Actively escorted artists and high-profile personnel, ensuring their safety and secure movement within complex event environments.
  • Delegated tasks and coordinated efforts of stagehands and other security personnel to maintain smooth operations and rapid response to incidents.
  • Responsible for meticulous planning and execution of security logistics for various stages and event areas.

Technologies & Skills

Event SecurityLogistics PlanningTeam CoordinationSafety ProtocolsCrowd ControlPerimeter SecurityRapid ResponseCrisis Management
  • Managed and optimized corporate VPNs, ensuring secure and reliable remote connectivity for business environments.
  • Administered and maintained dedicated servers and blade server hosting to support critical enterprise applications.
  • Oversaw co-location services, coordinating hosted infrastructure and ensuring stable data center operations.

Technologies & Skills

VPN ManagementDedicated ServersBlade ServersCo-location ServicesHosting InfrastructureEnterprise NetworkingRemote ConnectivityData Center Operations
  • Founded a company that provided a wide range of IT services and consult offerings.
  • Including maintaining and installations of services and managed hosting to domain registration and management, DNS services, programming services, planning of security solutions, and much more.

Technologies & Skills

Business DevelopmentIT ConsultingManaged HostingDomain ManagementDNS ServicesSecurity SolutionsCustom DevelopmentClient ManagementEntrepreneurship
  • While working at Chas, I gained extensive experience as a web developer, collaborating closely with end customers on a daily basis.
  • I had the opportunity to work directly with one of Sweden's largest media corporations, as well as prominent media agencies and companies, including DICE and Spotify, among others.

Technologies & Skills

Web DevelopmentFrontend DevelopmentClient CollaborationMedia IndustryFull-Stack DevelopmentJavaScriptPHPCustomer-Facing DevelopmentAPI IntegrationThird-Party SystemsMedia Tech
  • As a co-founder of one of Sweden's largest social networks, I helped create a unique online community for youths centered around alternative music and subcultures. We identified a niche that wasn't being served by mainstream platforms at the time and built a thriving community, blog, and forum from the ground up.

Technologies & Skills

Community BuildingSocial NetworkProduct DevelopmentUser GrowthPlatform ManagementCommunity ModerationWeb DevelopmentStartup

Education & Credentials

Education

Intensive Front-end Course

Lexicon, Stockholm - Nov 2025 - Apr 2026

  • Modern frontend development: HTML5, semantic markup, responsive design with CSS Grid, Flexbox, and Tailwind.
  • Advanced TypeScript: Robust code structure, DOM manipulation, and REST/GraphQL API integration.
  • React/Next.js: SPAs, component architecture, state management, routing, and form handling.
  • Agile development: Git/GitHub, SCRUM, and agile methodologies.

Licenses & Certifications

RIPE Database Training Course

RIPE NCCIssued Sep 2016

RIPE LIR Training Course

RIPE NCCIssued Sep 2016

References

References available upon request.

Languages

SwedishNative
EnglishFluent

Projects

Jan 2012 - Jun 2016

ArchDNS.com

A personal project to create a highly available, free-of-charge managed DNS service. I single-handedly developed a user-friendly control panel using PHP, Python, and C to interface with a PowerDNS backend. The entire platform was supported by a distributed, multi-node, fault-tolerant network that I designed and built to ensure immediate failover without using anycast, providing robust and secure DNS zone management for both my own domains and external users.

DNSHigh AvailabilityPowerDNSPHPPythonCDistributed SystemsNetwork Engineering
May 2011 - Dec 2012

Bit LC Inc.

As one of the founders of Bit LC Inc., I was at the forefront of the emerging cryptocurrency landscape. During a pivotal time for Bitcoin's growth, we provided a suite of essential services, navigating the complex challenges of security, scalability, and adoption for an early user base. This pioneering venture provided deep, firsthand experience in the volatility and immense potential of the early digital currency market, ending abruptly in early 2013 due to a major security incident common in that unregulated era.

CryptocurrencyBitcoinSecurityScalabilityFinTechEarly AdopterStartupPHPPythonBash

I have other projects as well, but the ones above are the most prominent projects from the past.

Volunteering

Feb 2012 - Present

Co-Founder / Board Member

Stockholm Makerspace

Stockholm Makerspace is a non-profit organization started by a mixed group of people who shared a vision of establishing a Makerspace in Stockholm. The idea emerged on an online forum, but since April 2012, we have been meeting regularly to collectively spread knowledge about 'The Maker movement' and seek contact with like-minded individuals.

Mar 2016 - Present

Executive Board Member

TBA Group (Non-profit org.)

TBA Group is a non profit organization acting as an event organizer and education nonprofit in Stockholm, Sweden. We organize private parties and events, workshops, classes and knowledge hub for our members and friends.

2018 - Feb 2020

Lighting Technician & Event Organizer / Manager

Trillah Hillah (Non-profit org.)

Production, design, rigging, and planning of stage lighting as well as ambient lighting in venues during events.

2006 - 2007

Youth and Confirmation Leader

Church of Sweden Youth

As a youth leader in the Church of Sweden Youth organization, I was responsible for several groups of young people aged 10 to 16. I also participated as a youth leader at confirmation camps and similar retreats.

Get in Touch

I'm currently open to new opportunities. Whether you have a question or just want to say hi, I'll try my best to get back to you!

Contact Information

Address:Härbrevägen 37, 142 34 Skogås, Sweden

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