Jonatan Jansson

• Sole owner of 11 multi-market web properties (WordPress, Eleventy, Astro.js) across several business units, responsible for architecture, delivery, and uptime.
• Built AI-assisted deployment pipelines (Claude & MCP servers) to auto-generate and roll out CMS components across all environments, with Playwright test suites for validation and automated reporting to Linear, Slack, and Notion.
• Migrated and consolidated legacy sites into a unified platform with a shared design system using React components and TypeScript.
• Built and maintain CI/CD pipelines (GitHub Actions) for automated testing and zero-downtime deployments, replacing a previously fragile manual process.
• Tune Core Web Vitals, run A/B tests, and optimize caching and asset delivery to improve conversion rates.
• Audit and improve AI search visibility (GEO) across web properties and brief marketing teams on emerging AI search strategies.
• Maintain GDPR compliance, security hardening, Google Analytics (GA4), Google Tag Manager (GTM), and HubSpot CRM integrations across all properties.
• Write technical documentation and run hands-on training sessions so non-technical teams can self-serve.

• Led a development team of three on coinpoker.com, a real-time poker platform with thousands of concurrent sessions and 25 active stakeholders.
• Consulted with senior leadership on CMS strategy and platform direction, advising on performance, scalability, and technology choices.
• Worked directly with the Product Manager on sprint planning, backlog refinement, and release coordination. Maintained technical documentation in Confluence.
• Built custom themes and plugins, designed system architecture, and managed advanced CMS configurations.
• Streamlined the design-to-deploy workflow from Figma handoff through to production, reducing turnaround on feature delivery.
• Handled database and server integrations for enterprise clients. Ran performance testing, troubleshooting, and continuous optimization.
• Led enterprise server migrations and platform hardening.

• Owned 20+ web properties across GENII subsidiaries (Iptor, GUS, Dorner, Nexiga, fimox, and others), handling maintenance, updates, security, and feature development.
• Built a multi-tenant WordPress plugin integrating the TeamTailor API to dynamically generate job listings across organizationally distinct entities with separate recruitment workflows under the GENII umbrella.
• Implemented HubSpot SSO integration and expanded MarTech capabilities supporting inbound marketing.
• Handled site migrations between environments, including database transfers and media/file restructuring.
• Conducted a GDPR and cookie compliance audit across the full portfolio of domains.

• Owned the full project lifecycle end to end (scoping, development, code review, testing, deployment, and invoicing) across 50+ clients at the leading web consultancy in Lidköping.
• Progressed from frontend CMS work to full-stack PHP development, with production work in React, Vue, Next.js, Svelte, Ember.js, and Node.js, including headless front-end builds consuming GraphQL and REST APIs.
• Built and maintained e-commerce storefronts with custom modules, payment gateway integrations, and platform upgrades for multiple clients.
• Built a Python middleware service aggregating geospatial data across multiple third-party APIs for a map-point integration.
• Delivered SEO and performance optimization for enterprise clients including Academedia, Sweden's largest private education company.
• Managed Linux hosting environments, CMS security and hardening, GDPR compliance, accessibility (WCAG), and payment/e-commerce integrations.

Key clients: Academedia, Helsingborg / Ulricehamn / Tranemo / Lidköping municipalities, Assemblin, Absolent Group, Viacon, McKonsult, Monokel, Uhip, WisbyTankers, TruckTrust.