Mark Pietrusinski

Background

About Mark Pietrusinski

Full stack web application developer with experience in several sectors, including: e-commerce, science/engineering and finance. I have broad international experience and speak English, Spanish, French, Dutch and Polish.* Programming languages: Typescript, Golang, PHP, Python, C#, SQL, HTML, CSS.* Familiar with setting up cloud infrastructure with automation on Amazon Web Services (AWS) and Google Cloud Platform (GCP)* Build and deployment tools: Docker, Jenkins, AWS CDK, Ansible, Terraform * Test, debug and monitoring tools: Jest, Cypress, Selenium, SonarQube, Sentry, New Relic * Experienced with Atlassian suite of development tools: Jira, Confluence, Bitbucket. Includes API integration for internal tooling and automation.* MySQL and PostgreSQL including: configuration tuning, relational DB design, stored procedures, query optimisation * Experienced with Web services related technologies: REST, JSON, GraphQL, SOAP, XSD, WSDL, etc.* Familiar with generative AI integrations using APIs to interface with LLMs including function calling with multi-step tool chains, model fine tuning, RAG and prompt engineering.