I am a Senior Full-Stack Software Engineer with 15+ years of experience, known for leading migrations (such as OpenShift to Kubernetes) and building security solutions that protect thousands of users. Recently, I delivered AI-driven automation that handles over 30% of incoming orders, freeing colleagues to focus on higher-value work. I work across backend and frontend, leveraging Python, Java, React, and Node.js, and I design scalable cloud infrastructures to ensure 24/7 availability and robust security. My strengths lie in system architecture, process optimization, and delivering business-aligned software solutions. I’ve contributed to Sweden’s national e-Health platform and helped scale critical services to millions of users, while fostering agile, collaborative teams. I’m fluent in English (IELTS 8.5) and thrive in fast-paced environments that prioritize user-centric innovations and measurable impact.

Kazuyuki Arai

I am a Senior Full-Stack Software Engineer with 15+ years of experience, known for leading migrations (such as OpenShift to Kubernetes) and building security solutions that protect thousands of users. Recently, I delivered AI-driven automation that handles over 30% of incoming orders, freeing colleagues to focus on higher-value work. I work across backend and frontend, leveraging Python, Java, React, and Node.js, and I design scalable cloud infrastructures to ensure 24/7 availability and robust security. My strengths lie in system architecture, process optimization, and delivering business-aligned software solutions. I’ve contributed to Sweden’s national e-Health platform and helped scale critical services to millions of users, while fostering agile, collaborative teams. I’m fluent in English (IELTS 8.5) and thrive in fast-paced environments that prioritize user-centric innovations and measurable impact.

Available to hire

I am a Senior Full-Stack Software Engineer with 15+ years of experience, known for leading migrations (such as OpenShift to Kubernetes) and building security solutions that protect thousands of users. Recently, I delivered AI-driven automation that handles over 30% of incoming orders, freeing colleagues to focus on higher-value work. I work across backend and frontend, leveraging Python, Java, React, and Node.js, and I design scalable cloud infrastructures to ensure 24/7 availability and robust security.

My strengths lie in system architecture, process optimization, and delivering business-aligned software solutions. I’ve contributed to Sweden’s national e-Health platform and helped scale critical services to millions of users, while fostering agile, collaborative teams. I’m fluent in English (IELTS 8.5) and thrive in fast-paced environments that prioritize user-centric innovations and measurable impact.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Language

English
Fluent

Work Experience

Full Stack Developer (Contract) at ALPHADEV AB
June 1, 2025 - October 28, 2025
Delivered an AI-driven order automation system on Azure using Python, SQLAlchemy, Alembic, and MSSQL; rolled out to new markets, contributing to at least 30% efficiency gains across order handling; reduced manual tasks and freed employees to focus on higher-value work. Built secure cloud infrastructure with Bicep and integrated AI agents into workflows to ensure scalability and compliance. Implemented a real-time presence service with WebSockets to enhance frontend collaboration.
Full Stack Developer (Contract) at Telia Company AB
December 1, 2024 - December 1, 2024
Advanced and streamlined checkout flow and purchase logic across React, React Native, Node.js/Express, Elixir, Gatsby; led payment integration including Apple/IDP logins; ensured accessibility compliance and cross-functional collaboration; processed thousands of payments daily.
Integration Specialist (Contract) at IDHAMMAR PRODUCTION AB
January 1, 2022 - October 28, 2025
Built replacement solution for a discontinued business-critical API using REST, OAuth2, and security standards; created an ESB that boosted processing efficiency by 1000% and enabled zero-downtime core system migration along with staff training.
DevOps Consultant at NOGUITEKNIK AB
January 1, 2022 - January 1, 2022
Led system setup, configuration, and administration using Linux (OpenShift, Docker, Apache, Keepalived, MariaDB, Galera, MaxScale); developed an Ansible-based deployment generator and automated virtual machine deployments in VMware ESXi; supported 24/7 health services and scaled COVID-19 testing services.
Senior Software Engineer | Project Manager at BURPEMPIRE AB
January 1, 2018 - October 28, 2025
Led a team of developers through design, development, testing, and deployment of scalable software; contributed to mindburp.se, a SPA/PWA with Stripe, Twilio, Zapier integration, and improved user engagement; applied Agile practices and improved delivery across cross-functional teams.
Business Analyst | Software Engineer at Forstena AB
January 1, 2017 - October 28, 2025
Spearheaded creation of an interactive, secure planning system at SvK; increased system usage by 200% and enabled cross-department collaboration; designed a modern case handling system with centralized storage and automated processes, enabling workforce growth and improved efficiency.
Solutions Architect | Senior Developer at ATEA/EMENTER AB
January 1, 2007 - January 1, 2007
Upgraded thread safety and performance of IBM's document management API; advised on project planning, feasibility assessments, and effort estimation for critical initiatives.
Owner | Senior Specialist, Solutions Architect at YOOMIA AB
January 1, 2007 - October 28, 2025
Orchestrated full-stack development for diverse clients (Java, React.js, Node.js); mentored teams; promoted Git and Agile methodologies; delivered training and documentation to ensure continuous improvement.

Education

Electrical and Electronics Engineering at Åsö Technical College
January 11, 2030 - October 28, 2025

Qualifications

IBM Certified Advanced Application Developer - Notes and Domino 9.0
January 11, 2030 - October 28, 2025
IBM Certified Advanced System Administrator - Notes and Domino 9.0
January 11, 2030 - October 28, 2025

Industry Experience

Software & Internet, Healthcare, Education, Professional Services, Government

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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