Marcus Denison - AI Platform Engineer

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Hamburg, Germany

Experience

Apr 2025 - Present

10 months

Hamburg, Germany

AI Platform Engineer

DER SPIEGEL GmbH & Co. KG

Feature development on the recommendation system
Introduction of Azure Databricks
Technologies: Python, Azure, Databricks, PostgreSQL, PGVector, Embeddings, Terraform, CI/CD, API

Mar 2024 - Jul 2024

5 months

Berlin, Germany

AI Platform Engineer

Siemens Mobility GmbH

Implementation of a chatbot based on internal data and the OpenAI API
Technologies: AWS, Python, Langchain, OpenAI, Git, Terraform, ETL, CI/CD, API

Feb 2024 - Mar 2025

1 year 2 months

Hamburg, Germany

Data Platform Engineer

DER SPIEGEL GmbH & Co. KG

Providing APIs to perform GDPR-compliant deletions in the data warehouse
Various data integrations and feature developments around the data warehouse
Technologies: AWS, Redshift, Lambda, SNS, Git, Python, Airflow, Terraform, ETL, CI/CD, API

Nov 2023 - Feb 2024

4 months

Hamburg, Germany

Data Platform Engineer

DER SPIEGEL GmbH & Co. KG

Connecting Adobe Privacy APIs to the central GDPR service
Technologies: Java, Quarkus, Python, SQL, Git, GDPR, ETL, CI/CD, Kubernetes, API

Mar 2023 - Nov 2023

9 months

Hamburg, Germany

Data Platform Engineer

DER SPIEGEL GmbH & Co. KG

Reduced deployment times from 30-120 minutes to a maximum of 5 minutes by integrating Airflow orchestration and AWS ECS Fargate
Improved code efficiency and maintainability through extensive refactoring, testing, and removal of redundant components
Optimized build processes by migrating from AWS CodeBuild to an in-house Jenkins build system for better deployment efficiency
Implemented seamless data integration from the data warehouse to Amazon SageMaker for accurate KPI predictions and data-driven decisions
Technologies: Airflow, AWS ECS Fargate, Jenkins, Amazon SageMaker, AWS CodeBuild, GDPR, Python, Terraform, ETL, CI/CD, API

Sep 2022 - Dec 2022

4 months

Cologne, Germany

Data Integration Engineer

TAOD Consulting GmbH

Comprehensive analysis of the existing API infrastructure, identifying strengths and areas for improvement
Communicating API challenges to technical and non-technical stakeholders
Advising on RESTful principles to improve technical understanding and API development
Developing a standardized style guide for future API development to ensure consistent best practices
Technologies: RESTful, API

May 2022 - Mar 2023

11 months

AI Data Platform Engineer

Siemens Mobility GmbH

Developing and implementing cloud solutions on AWS and OCI with automated data pipelines, ETL jobs, and structured artifact management for ML workflows
Designing and building modern API solutions for ML and AI data services from planning to implementation, including code refactoring and a CI/CD framework with GitLab
Automating data pipelines by integrating an experiment tracking system for comprehensive monitoring and performance optimization of ML experiments
Designing the architecture for NLP solutions with seamless component integration for optimal performance and scalability
Implementing an NLP application with RESTful architecture and a user-friendly interface by consistently following coding standards
Setting up efficient CI/CD workflows on GitLab to reduce development cycles and increase project agility
Technologies: Python, Airflow, FastAPI, AWS, Git, GitLab, Haystack, Streamlit, NLP, Terraform, ETL, CI/CD, API

Jul 2021 - Mar 2022

9 months

Head of Engineering

Adtriba GmbH

Leading an international development team (8 people) in creating customer-focused SaaS products
Providing strategic technology consulting and technical support across the company
Coordinating collaboration between internal teams and external partners
Successfully delivering several customer-critical product features that directly impacted company growth
Technologies: Java, Python, SQL, Spring Boot, AWS, Redshift, Git, Scrum, DSGVO, GDPR, Terraform, ETL, CI/CD, API

Mar 2020 - Jun 2021

1 year 4 months

Lead Engineer

Adtriba GmbH

Complete redevelopment of the customer-focused software architecture (frontend, backend, DevOps)
Improving system performance and scalability by 40% through technical rework
Strategically recruiting and building the frontend team
Implementing DevSecOps practices for optimized deployment processes
Technologies: Java, Python, SQL, Spring Boot, AWS, Redshift, Git, Scrum, DSGVO, GDPR, Terraform, ETL, API

Dec 2018 - Feb 2020

1 year 3 months

Senior Data Engineer

Emetriq GmbH

Developing and expanding an innovative cross-device network for extended data reach
Technologies: Scala, Java, Python, SQL, AWS, Git, Scrum, DSGVO, GDPR, IAB TCF, CI/CD

Sep 2017 - Nov 2018

1 year 3 months

Software Engineer

Moovel Group GmbH

Development and maintenance of the central authentication/authorization service for a multimodal mobility app
Technologies: Scala, Java, Python, SQL, AWS, Git, Scrum, GDPR, OKR

Jan 2015 - Aug 2017

2 years 8 months