Adrian Calma-Senior Consultant
Check rate
Experience
Senior Consultant
DB Systel GmbH
- Spearheaded the development of MLOps and crafted MLOps strategies
- Guided market exploration efforts regarding MLOps
- Managed requirements
Product Owner MLOps; MLOps & ML Expert – Support in market exploration; Requirements Management – Data Factory
DB Netz AG
Crafted the architecture of the data flow, from data acquisition to model deployment
Introduced Scrum within the team
Deployed Kubernetes from scratch, on-premise
Deployed Kubeflow and set up Prometheus for monitoring
Developed a REST API with FastAPI for automatic triggering of pipelines
Managed stakeholders and wrote and prioritized user stories
Evaluated trials and test versions with a focus on MLOps and annotation
Prepared bidder discussions focusing on MLOps
Supported various use cases with a focus on data management
Defined black box system requirements and white box subsystem requirements for the ML platform
Conducted requirements analysis and management
Consultant for the MVP of the Airplane Price Evaluation Tool
AlphaPilots
- Selected, cleaned, and pre-processed data
- Developed a machine learning model to estimate airplane prices
- Advised on additional data sources, MVP improvement, and feature usage tracking
Business Development for potential LiDAR Use Cases
German Deep Tech Institute
- Evaluated over 90 potential business cases
- Conducted market size and trends analysis, competitor analysis, and overall evaluation for six selected cases
- Generated three new business cases
- Performed customer development leading to the first prototype
- Created initial solution concept in Figma as a clickable wireframe
CEO – Tech and Business Development; Product Owner; MLOps Engineer
Annotly UG (haftungsbeschränkt)
- Led business development and implementation of a SaaS/mobile app for early plant disease detection
- Conducted over 50 customer interviews for mobile app development and performed product backlog refinement, market analysis, and customer interviews
- Developed a mobile app with feed alerts for farmers, managed UI implementation, and built the backend with NestJS and GraphQL
- Refined product backlog and matched geospatial RADAR data to parcels to estimate NDVI using classification and regression algorithms
- Supervised a student assistant
- Implemented an internal REST API to communicate with PostgreSQL (including PostGIS) as a Dockerized microservice
- Determined stress regions in precision farming using satellite data (NDVI) and implemented an outlier detection algorithm
Senior Machine Learning Engineer – Human-in-the-Loop; Product Owner
Signatrix GmbH
- Implemented active learning in combination with deep learning and managed the annotation team
- Communicated, considered, and evaluated stakeholder requirements
- Evaluated and optimized the internal annotation process and managed the annotation team
- Conducted exploratory data analysis and data cleaning of existing datasets
- Evaluated annotation quality and generated datasets for deep learning tasks
- Deployed a completely new product within two weeks after requirement definition
- Performed customer development leading to updated requirements for the self-checkout product
- Managed accounts for a large retail customer
- Conceptualized and wrote a grant proposal and conducted pricing analysis
Proof of Concept Developer for a SaaS Organizing Events
evesync
- Built a SaaS solution for online event management covering sponsors, budgets, and speakers
- Conducted customer and business development
Consultant for Human-in-the-Loop
Berlin based Startup
- Improved human-in-the-loop approach by optimizing data selection strategy and annotation processes for video footage
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Retail, Transportation, and Agriculture.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Business Intelligence, Quality Assurance, Strategy, and Project Management.
Skills
Soft Skills
- Product Management And Ownership. Led Cross-Functional Teams In The Development And Deployment Of Mlops Solutions, Driving Stakeholder Alignment And Prioritizing User Stories For Optimal Product Delivery.
- Team Lead. Cto And Ceo Startup Experience With Teams Of Up To 9 Persons (Tech, Sales, And Marketing).
- Mentoring And Consultancy. Technical Guidance For The Founders Of Iurcrowd, A Legal Tech Startup Based In Berlin, On Identifying Resources And Exploring Development Options For Their Mvp; Spearheading The Development Of Mlops Strategies And Providing Market Exploration Support For Large German Corporations.
Technical Skills
- Human-In-The-Loop (Active Learning). Longstanding Experience With Human-In-The-Loop (Active Learning) Approaches, Including Annotator Management.
- Machine Learning And Pattern Recognition. Comprehensive Knowledge With Projects In Object And Outlier Detection, And Classification.
- Software Engineering (Python). Profound Knowledge In The Conception Of Software Frameworks With Realized Applications In The Areas Of Fintech And Precision Farming.
- Development And Operations (Devops). Multiple Years Of Running Python Microservices In A Cloud Environment (Deployment, Containerization, Etc.).
Programming Languages
- Python – 6 Years. Daily Usage For Data Engineering, Machine Learning, And Microservices.
- Postgresql – 6 Years. Design And Daily Usage Of Inter-Table Queries, Including Postgis Queries.
- Java – 5 Years. Co-Developing A Data Analysis Framework.
- C/C++ – 9 Years. Learning And Teaching Relevant Projects.
- Javascript – 2 Years. Precision Farming Mvp With React Native And Nestjs.
Frameworks And Technologies
- Pandas – 5 Years. Exploratory Data Analysis And Cleaning Of Heterogeneous Data.
- Numpy – 5 Years. Faster Array Operations Through Vectorized Operations.
- Scikit-Learn – 5 Years. Application Of Ml Models For Microservices.
- Sqlalchemy – 3 Years. Creating The Orm Systems For The Software Frameworks.
- Rest – 3 Years. Internal Rest Api For Microservices With Fastapi.
- Tensorflow – 1 Year. Usage With Tensorflow Object Detection Api.
- Geopandas – 1 Year. Pre-Processing Geospatial Data With Python.
Tools
- Git – 6 Years. Usage Of Both Gitflow And Gerrit.
- Youtrack – 3 Years. Scrum Boards, Reports, Progress Monitoring, Timesheets.
- Jira – 2 Years. Scrum Boards, Reports, Progress Monitoring, Plans.
- Scripting – 5 Years. Scripting On Linux.
- Ssh – 4 Years. Maintenance Of Vps.
- Docker – 3 Years. Building Containers For Deploying Microservices.
- Aws – 1 Year. S3 Buckets For Storing Pngs.
Languages
Education
University of Kassel
PhD in Computer Science · Computer Science · Kassel, Germany
University of Kassel
Master of Science in Computer Science · Computer Science · Kassel, Germany
University of Kassel
Bachelor of Science in Computer Science · Computer Science · Kassel, Germany
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Adrian is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.
Adrian speaks the following languages: Romanian (Native), German (Advanced), English (Advanced).
Adrian has at least 6 years of experience. During this time, Adrian has worked in at least 8 different roles and for 8 different companies. The average length of individual experience is 1 year and 9 months. Note that Adrian may not have shared all experience and actually has more experience.
Based on recent experience, Adrian would be well-suited for roles such as: Senior Consultant, Product Owner MLOps; MLOps & ML Expert – Support in market exploration; Requirements Management – Data Factory, Consultant for the MVP of the Airplane Price Evaluation Tool.
Adrian's most recent position is Senior Consultant at DB Systel GmbH.
In recent years, Adrian has worked for DB Systel GmbH, DB Netz AG, AlphaPilots, German Deep Tech Institute, and Annotly UG (haftungsbeschränkt).
Adrian is most experienced in industries like Information Technology, Retail, and Agriculture. Adrian also has some experience in Transportation, Professional Services, and Aerospace and Defense.
Adrian is most experienced in business areas like Information Technology, Product Development, and Business Intelligence. Adrian also has some experience in Quality Assurance, Strategy, and Project Management.
Adrian has recently worked in industries like Information Technology, Retail, and Agriculture.
Adrian has recently worked in business areas like Information Technology, Product Development, and Business Intelligence.
Adrian holds a Doctorate in Computer Science from University of Kassel, a Master in Computer Science from University of Kassel and a Bachelor in Computer Science from University of Kassel.
Adrian has 4 certificates. Among them, these include: Certified SAFe® 6 Agilist, Professional Agile Leadership™ - Evidence-Based Management™ (PAL-EBM), and Professional Scrum Product Owner™ II (PSPO II).
The availability of Adrian needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 27 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Similar freelancers
Discover other experts with similar qualifications and experience
Tungi Dang
Eduard Van kleef
Mathias Wilhelm
Christian Weinbörner
Ronald Foerster
Ulf Schiebener
Martin Musiol
Christian Golecki
Albert Frischmann
Jens Daube
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a Senior Consultant
Louis Guitton
Simona Thrussell
Utku Erol
Chintan Padaliya
David Klemme
Umar Maqsud
Marcel Meyer
Stefan Ojanen
Mahabub Akram
Manuel Pasieka
Nearby freelancers
Professionals working in or nearby Berlin, Germany
Andreas Rühl
Silvia Bürmann
Chris Wolf
Dmitry Pankov
Björn Stark
Hanna Fischer
Nune Isabekyan
André Siegmund
Anastasia Stokes
Christian Pestel
