Senior Full-Stack Engineer and hands-on Engineering Team Lead with 10 years of commercial experience building SaaS platforms, enterprise applications, API integrations, data-intensive systems, and cloud products.

My primary stack includes React, TypeScript, Python, Django, FastAPI, Node.js, PostgreSQL, Docker, Kubernetes, and cloud infrastructure.

I am currently focused on Applied AI engineering: production-oriented RAG systems, LLM workflows, secure tool execution, evaluation, observability, and full-stack AI products.

Based in Gdańsk, Poland, and available for remote B2B cooperation across Europe and the UK.

• Full-stack SaaS products with React, TypeScript, Python, and Node.js
• Backend APIs, third-party integrations, ETL pipelines, and data-processing workflows
• RAG and AI search systems with structured outputs and verifiable citations
• Data-intensive applications using PostgreSQL, complex SQL, and background processing
• Reliable services running with Docker, Kubernetes, and cloud infrastructure
• Cloud infrastructure and CI/CD workflows on Azure and AWS
• Secure authentication and authorisation using OAuth, OIDC, and JWT
• Internal enterprise tools, dashboards, reporting systems, and workflow automation
• Custom e-commerce functionality, integrations, and Magento 2 modules

I am building an original clean-room Applied AI portfolio, starting with:

A multi-tenant AI platform for evidence-backed security and compliance analysis.

The platform is designed to demonstrate:

• Next.js, React, and TypeScript
• Python, FastAPI, and Pydantic
• PostgreSQL and pgvector
• Document ingestion and processing pipelines
• Semantic and hybrid retrieval
• Structured compliance findings
• Evidence-backed answers with verifiable citations
• LangGraph workflows
• Secure MCP tools
• Human approval for sensitive actions
• Multi-tenant application architecture
• AI evaluation and regression testing
• OpenTelemetry-based observability
• OAuth, OIDC, JWT, and role-based access control

All public portfolio projects are developed from scratch using public documentation, synthetic data, and original code.

They do not contain proprietary client code, customer data, confidential business logic, or materials from private commercial repositories.

My professional experience includes:

• Maritime SaaS products serving operational data for more than 3,000 vessels
• Enterprise cloud platforms used by more than 1,000 internal users
• Banking, payment-gateway, transaction-processing, and SEPA integrations
• ETL pipelines combining, validating, transforming, and merging data from multiple external APIs
• Data-intensive systems using complex SQL queries and datasets containing millions of records
• React and TypeScript frontend architecture and feature development
• Python, Django, FastAPI, and Node.js backend development
• REST API design, external system integrations, and asynchronous processing
• PostgreSQL, MySQL, MongoDB, Redis, Kafka, and Elasticsearch
• Docker, Kubernetes, Terraform, Azure, AWS, and CI/CD pipelines
• Production debugging, performance optimisation, monitoring, and incident resolution
• End-to-end feature ownership from requirements and architecture through deployment and production support
• Hands-on technical leadership of a small engineering team

I also have commercial Magento 2 and PHP experience, including:

• Custom Magento 2 module development
• Checkout and order workflow customisation
• Marketplace and reverse-auction functionality
• Product catalogue, search, category, and product-page customisation
• Custom forms, frontend templates, PHTML, JavaScript, and RequireJS
• Payment, email, customer, and third-party service integrations
• Mageplaza, Webkul, Porto, Magezon, and other Magento extensions
• Elasticsearch indexing and catalogue search troubleshooting
• Dockerised Magento environments
• Cache, cron, indexing, static-content, and deployment debugging
• Production performance analysis and issue resolution

Most of my commercial work was developed in private client repositories.

The public repositories on this profile demonstrate the engineering practices, system-design experience, technical depth, and delivery standards developed throughout that work.

Built and maintained full-stack features for a maritime SaaS platform serving more than 3,000 vessels.

Worked across:

• React and TypeScript applications
• Python and Django services
• PostgreSQL databases
• Route planning and voyage-related workflows
• External maritime data integrations
• Reporting and PDF generation
• Performance optimisation
• Production support and incident investigation

Developed and supported enterprise applications running in Azure environments.

Experience included:

• React-based frontend applications
• Azure Functions
• Terraform infrastructure
• CI/CD pipelines
• Cloud service migrations
• Secrets and configuration management
• Logging, monitoring, and operational support

Worked on banking and payment-related systems involving:

• Payment-gateway integrations
• SEPA-related workflows
• Transaction-processing services
• REST APIs
• PostgreSQL and MySQL
• React and Redux interfaces
• Node.js and Express services
• Kafka-related messaging
• Docker-based environments

Developed enterprise search and data-integration functionality involving:

• Python and Angular
• Multiple enterprise data connectors
• Federated search
• Retrieval pipelines
• API integration reliability
• Data validation and transformation
• AI-assisted data merging
• RAG-oriented system design

React · TypeScript · JavaScript · Next.js · Python · FastAPI · Django · Node.js · Express · PostgreSQL · REST APIs · Docker · Kubernetes · Terraform · Azure · AWS

RAG · LLM Workflows · pgvector · Embeddings · Semantic Search · Hybrid Search · Structured Outputs · LangGraph · MCP · LLM Evaluation · OpenTelemetry

Magento 2 · PHP · MySQL · MongoDB · Redis · Kafka · Elasticsearch · Azure Functions · GitLab CI/CD · GitHub Actions

I focus on:

• Clear and maintainable architecture
• Strong typing and explicit data contracts
• Reliable API and integration design
• Security and access control
• Automated testing and validation
• Production observability
• Performance and scalability
• Pragmatic engineering decisions
• End-to-end ownership
• Safe use of AI-assisted development tools

Open to remote opportunities as a:

• Senior Full-Stack Engineer
• Senior Python Engineer
• Backend Engineer
• Applied AI Engineer
• AI Application Developer
• Founding Engineer

Available for B2B cooperation through an EU or UK partner company.