I want you to win.
My name is Marcin Zajkowski, I am a seasoned full-stack front-end focused developer living in Toronto. I have decades of experience in the marketing sector as an implementor, animator, consultant and developer. I love my work, I enjoy bringing people’s vision to reality, I’m a great translator of technical terms, and I understand how to navigate the creative process as it relates to tech. Thanks for stopping by.
Professional Skills
Web Frameworks
Builds websites and web applications
AI & Automation
Builds AI assistants and automates repetitive work
- AI agents
- Agentic coding
- Automation
- OpenCode
- LM Studio
- Google ADK
- OpenAI API
- Hugging Face
- Local models
- GPT OSS
- DeepSeek
- Nemotron
- GLM
- Gemma
- Prompt engineering
Content Management Systems
Enables teams to publish and manage their own content
| System | Authored | Integrated | Extended |
|---|---|---|---|
| Contentful | ✓ | ✓ | ✗ |
| Decap CMS | ✓ | ✓ | ✓ |
| WordPress | ✓ | ✓ | ✓ |
| TeamSite | ✓ | ✗ | ✗ |
| AEM | ✗ | ✓ | ✗ |
Front-end
Everything the visitor sees and interacts with in a browser
- HTML
- CSS
- SCSS
- Responsive design
- Tailwind
- shadcn/ui
- daisyUI
- Bootstrap
- Foundation
- Skeleton
- JavaScript
- TypeScript
- Canvas
- Game logic
- GSAP
- Service workers
- Vite
- Bespoke functionality
Back-end
Servers, APIs, authentication and application logic
- Node.js
- Express
- Fastify
- PHP
- ASP
- API design
- Stripe
- Facebook API
- User authentication
- SSO
- Pipeline design
- Socket.IO
- WebSockets
Databases
Stores and queries application data
- SQL
- NoSQL
- JSON
- XML
- Data conversion
- MongoDB
- DynamoDB
- SQLite
- MySQL
- Database design
- Migrations
- ORM
Cloud & infrastructure
Deployments, hosting, application scaling
- AWS
- Lambda
- S3
- CloudFront
- Route 53
- EC2
- Elastic Beanstalk
- Load balancers
- Autoscaling
- Edge functions
- DNS
- HTTPS
- Certificates
- Lightsail
- Netlify
- Vercel
- Unix
- Linux
Build & development
Builds, packages and manages web applications
- Git
- Composer
- npm
- npm workspaces
- Webpack
- Parcel
- Gulp
- CI/CD pipelines
- Continuous deployment
- Artifact delivery
Accessibility, security & compliance
Builds accessible, secure and privacy-conscious applications
- WCAG
- AODA
- OWASP
- Web application security
- GDPR
- Web privacy
- i18n
World Real Estate Association
Real estate portal for associate members with payment system and identity integration
Killarney Lodge
Immersive marketing site clearly defining this all inclusive premium resort
HomeLife Realty
Marketing website with offering, contact information and a searchable roster
CrossFit Cambridge
Fitness site with pricing, booking, galleries and mission statement
