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Freelance Jobs in Germany

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Freelance Agent Evaluation Engineer at Mindrift
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Python, Fastapi, Pytest, React, Javascript, Typescript, Docker, Postgres, Kafka, Redis, Github Actions, Full Stack Development, Test Automation, Linux, Ai Evaluation, Async/Await
Specialization
Requires 5+ years of software development experience, primarily in Python and full-stack development with React. A degree in Computer Science or a related field and B2 English proficiency are preferred.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Munich, Bavaria, Germany - Full Time
Skills Needed
Python, Fastapi, Pytest, React, Javascript, Typescript, Docker, Postgres, Kafka, Redis, Github Actions, Test Automation, Full Stack Development, Linux, Ai Evaluation, Software Engineering
Specialization
Requires 5+ years of software development experience, primarily in Python and full-stack development with React. A degree in Computer Science or a related field and B2 English proficiency are preferred.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Stuttgart, Baden-Württemberg, Germany - Full Time
Skills Needed
Python, Machine Learning, Statistical Analysis, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Mlops, Tensorflow, Pytorch, Langchain, Pandas, Numpy, Scipy
Specialization
Requires 5+ years of machine learning experience with expert-level Python and statistical analysis skills. Proficiency in GenAI technologies, MLOps, and strong written English (C1+) is essential.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Berlin, , Germany - Full Time
Skills Needed
Python, Fastapi, Javascript, Typescript, React, Docker, Postgres, Kafka, Redis, Functional Testing, Integration Testing, Ai Evaluation
Specialization
Requires over 5 years of software development experience with a core stack including Python, JavaScript/TypeScript, and various infrastructure tools. Must have strong experience in functional and integration testing and B2+ English proficiency.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Hamburg, , Germany - Full Time
Skills Needed
Python, Fastapi, Pytest, React, Javascript, Typescript, Docker, Postgres, Kafka, Redis, Github Actions, Test Automation, Full Stack Development, Linux, Ai Evaluation, Software Engineering
Specialization
Requires 5+ years of software development experience, primarily in Python and full-stack development with React. Candidates should have a degree in Computer Science or a related field and B2 English proficiency.
Experience Required
Minimum 5 year(s)
Freelance Norwegian SEO Specialists at Social Element
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Seo, Google Business Profile Optimization, Norwegian Language, Market Analysis, Content Optimization
Specialization
Requires native-level Norwegian fluency and a strong knowledge of the local market. Candidates must have proven SEO experience and background knowledge in fashion or sportswear brands.
Experience Required
Minimum 2 year(s)
Freelance Creative Designer (m/f/d) at Saypien
Berlin, , Germany - Full Time
Skills Needed
Meta Ad Creative, Visual Concepting, Motion Design, Static Design, Performance Data Iteration, Product Positioning, Digital Product Design, Independent Work
Specialization
Proven experience building high-converting Meta ad creatives with a portfolio of results. Ability to work independently and fast, with a strong interest in AI and digital tech products.
Experience Required
Minimum 2 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Hamburg, , Germany - Full Time
Skills Needed
Python, Fastapi, Javascript, Typescript, React, Docker, Postgres, Kafka, Redis, Functional Testing, Integration Testing, Ai Evaluation
Specialization
Requires over 5 years of software development experience with a core stack including Python, JavaScript/TypeScript, and various infrastructure tools. Must have B2+ English proficiency and experience in functional and integration testing.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
, , Germany - Full Time
Skills Needed
Python, Fastapi, Javascript, Typescript, React, Docker, Postgres, Kafka, Redis, Functional Testing, Integration Testing, Ai Evaluation
Specialization
Requires over 5 years of software development experience with a core stack including Python, JavaScript/TypeScript, and various infrastructure tools. Must possess B2+ English proficiency and experience in functional and integration testing.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Munich, Bavaria, Germany - Full Time
Skills Needed
Python, Machine Learning, Statistical Analysis, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Mlops, Tensorflow, Pytorch, Langchain, Pandas, Numpy, Scipy
Specialization
Requires 5+ years of machine learning experience with expert-level Python and statistical analysis skills. Proficiency in GenAI technologies, MLOps, and strong written English (C1+) is expected.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Stuttgart, Baden-Württemberg, Germany - Full Time
Skills Needed
Python, Fastapi, Pytest, React, Javascript, Typescript, Docker, Postgres, Kafka, Redis, Github Actions, Test Automation, Full Stack Development, Linux, Ai Evaluation, Software Engineering
Specialization
Requires 5+ years of software development experience, primarily in Python and full-stack development with React. A degree in Computer Science or a related field and B2 English proficiency are preferred.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Stuttgart, Baden-Württemberg, Germany - Full Time
Skills Needed
Python, Machine Learning, Data Science, Pandas, Numpy, Scipy, Scikit Learn, Statsmodels, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Tensorflow, Pytorch
Specialization
Requires 5+ years of hands-on machine learning experience with a strong portfolio of real-world problem-solving. Candidates must demonstrate expert-level proficiency in Python, statistical analysis, and modern AI frameworks.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Python, Machine Learning, Data Science, Pandas, Numpy, Scipy, Scikit Learn, Statsmodels, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Tensorflow, Pytorch
Specialization
Requires 5+ years of hands-on machine learning experience with a strong portfolio of real-world problem-solving. Candidates must demonstrate expert-level proficiency in Python, statistical analysis, and modern machine learning frameworks.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Hamburg, , Germany - Full Time
Skills Needed
Python, Machine Learning, Data Science, Pandas, Numpy, Scipy, Scikit Learn, Statsmodels, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Tensorflow, Pytorch
Specialization
Requires 5+ years of hands-on machine learning experience with a strong portfolio of real-world problem-solving. Candidates must possess expert-level proficiency in Python, statistical analysis, and modern machine learning frameworks.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Munich, Bavaria, Germany - Full Time
Skills Needed
Python, Machine Learning, Data Science, Pandas, Numpy, Scipy, Scikit Learn, Statsmodels, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Tensorflow, Pytorch
Specialization
Requires 5+ years of hands-on machine learning experience with a strong portfolio of real-world problem-solving. Candidates must possess expert-level proficiency in Python, statistical analysis, and modern AI frameworks.
Experience Required
Minimum 5 year(s)
AI Trainer - Freelance Data Annotator at Toloka Annotators
, , Germany - Full Time
Skills Needed
Data Annotation, Content Rating, Fact Checking, Logical Thinking, English Proficiency, Attention To Detail, Communication Skills, Reasoning
Specialization
Requires a bachelor's degree and at least one year of professional experience. Candidates must have advanced English proficiency (C1 or higher) and strong analytical reasoning skills.
AI Trainer - Freelance Data Annotator at Toloka Annotators
Hamburg, , Germany - Full Time
Skills Needed
Data Annotation, Content Rating, Fact Checking, Logical Thinking, English Proficiency, Attention To Detail, Communication Skills, Reasoning
Specialization
Requires a bachelor's degree and at least one year of professional experience. Candidates must have advanced English proficiency (C1 or higher) and strong reasoning abilities.
AI Trainer - Freelance Data Annotator at Toloka Annotators
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Data Annotation, Fact Checking, Logical Thinking, English Proficiency, Content Classification, Attention To Detail, Communication Skills, Reasoning Abilities
Specialization
Requires a bachelor's degree and at least one year of professional experience. Candidates must have advanced English proficiency (C1 or higher) and strong analytical skills.
AI Trainer - Freelance Data Annotator at Toloka Annotators
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Data Annotation, Fact Checking, Logical Thinking, Reasoning, Attention To Detail, Communication Skills, Artificial Intelligence, Generative Ai, Content Labeling, Content Classification
Specialization
Requires a bachelor's degree in any discipline and at least one year of professional experience. Candidates must have an advanced level of English (C1 or higher) and strong analytical abilities.
AI Trainer - Freelance Data Annotator at Toloka Annotators
Berlin, , Germany - Full Time
Skills Needed
Data Annotation, Fact Checking, Logical Thinking, Reasoning, Attention To Detail, Communication Skills, Artificial Intelligence, Generative Ai, Content Labeling, Content Classification
Specialization
Requires a bachelor's degree in any discipline and at least one year of professional experience. Candidates must possess an advanced level of English (C1 or higher) and strong logical reasoning abilities.
Freelance Agent Evaluation Engineer at Mindrift
Frankfurt, Hesse, Germany -
Full Time

Start Date

Immediate

Expiry Date

18 Aug, 26

Salary

50.0

Posted On

20 May, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

No

Skills

Python, FastAPI, Pytest, React, JavaScript, TypeScript, Docker, Postgres, Kafka, Redis, GitHub Actions, Full-stack Development, Test Automation, Linux, AI Evaluation, Async/Await

Industry

technology;Information and Internet

Description
Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment. What this opportunity involves We're building a dataset to evaluate AI coding agents — how well a model handles real-world developer tasks. You'll create challenging tasks and evaluation criteria within realistic simulated environments: Build virtual companies following a high-level plan - codebase, infrastructure, and context (conversations, documentation, tickets) that form a realistic environment with development history Assemble and calibrate tasks from intermediate states of the virtual company: craft the prompt, define evaluation criteria, and ensure the task is solvable and the evaluation is fair Design tasks set in isolated environments - emulations of a developer's workstation: a Linux machine with development tools (terminal, CLI), MCP servers (repository, task tracker, messenger, documentation, etc.), and a real web application codebase Write tests that accept all correct solutions and reject incorrect ones - neither too strict (breaking on valid approaches) nor too lenient (passing bad ones) Iterate with an AI agent on tests - verifying they catch real problems, don't miss bad solutions, and don't break on good ones Review code written by agents, analyze why an agent failed or succeeded, and design edge cases and adversarial scenarios Iterate based on feedback from expert QA reviewers who score your work on quality criteria What this is NOT Not data labeling Not prompt engineering Not writing code from scratch - the agent writes most of the code; you guide and evaluate A significant part of the work is done together with AI - it's very hard to create tasks that challenge frontier models without using frontier models. What we look for This opportunity is a good fit for experienced developers, software engineers, and/or test automation specialists open to part-time, non-permanent projects. Ideally, contributors will have: Degree in Computer Science, Software Engineering, or related fields 5+ years in software development, primarily Python (FastAPI, pytest, async/await, subprocess, file operations) Background in full-stack development, with experience building React-based interfaces (JavaScript/TypeScript) and robust back-end systems Experience writing tests (functional, integration — not just running them) Docker containers, and familiarity with infrastructure tools (Postgres, Kafka, Redis) CI/CD understanding (GitHub Actions as a user: triggers, labels, reading results) English proficiency - B2 You don't need to be an expert in every item, but you should be comfortable reading and reasoning about code across the stack. Why this is hard Frontier models are already good at coding. Creating a task that genuinely challenges the best models is non-trivial. You need to deeply understand where models fail and what scenarios reveal the difference between a good and a bad solution. Tasks have many valid solutions. Writing tests that accept all correct solutions and reject incorrect ones is harder than it sounds. How it works Apply → Pass qualification(s) → Join a project → Complete tasks → Get paid Effort estimate Tasks for this project are estimated to take 20 hours to complete, depending on complexity. This is an estimate and not a schedule requirement; you choose when and how to work. Tasks must be submitted by the deadline and meet the listed acceptance criteria to be accepted. Compensation On this project, contributors can earn up to $50 per hour equivalent, depending on their level and pace of contribution. Compensation varies across projects depending on scope, complexity, and required expertise. Please note that other projects on the platform may offer different earning levels based on their requirements.

How To Apply:

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Responsibilities
Create challenging tasks and evaluation criteria to test AI coding agents within simulated virtual company environments. Write robust tests to verify agent solutions and analyze failures to design adversarial scenarios.
Freelance Agent Evaluation Engineer at Mindrift
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Python, Fastapi, Pytest, React, Javascript, Typescript, Docker, Postgres, Kafka, Redis, Github Actions, Full Stack Development, Test Automation, Linux, Ai Evaluation, Async/Await
Specialization
Requires 5+ years of software development experience, primarily in Python and full-stack development with React. A degree in Computer Science or a related field and B2 English proficiency are preferred.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Munich, Bavaria, Germany - Full Time
Skills Needed
Python, Fastapi, Pytest, React, Javascript, Typescript, Docker, Postgres, Kafka, Redis, Github Actions, Test Automation, Full Stack Development, Linux, Ai Evaluation, Software Engineering
Specialization
Requires 5+ years of software development experience, primarily in Python and full-stack development with React. A degree in Computer Science or a related field and B2 English proficiency are preferred.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Stuttgart, Baden-Württemberg, Germany - Full Time
Skills Needed
Python, Machine Learning, Statistical Analysis, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Mlops, Tensorflow, Pytorch, Langchain, Pandas, Numpy, Scipy
Specialization
Requires 5+ years of machine learning experience with expert-level Python and statistical analysis skills. Proficiency in GenAI technologies, MLOps, and strong written English (C1+) is essential.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Berlin, , Germany - Full Time
Skills Needed
Python, Fastapi, Javascript, Typescript, React, Docker, Postgres, Kafka, Redis, Functional Testing, Integration Testing, Ai Evaluation
Specialization
Requires over 5 years of software development experience with a core stack including Python, JavaScript/TypeScript, and various infrastructure tools. Must have strong experience in functional and integration testing and B2+ English proficiency.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Hamburg, , Germany - Full Time
Skills Needed
Python, Fastapi, Pytest, React, Javascript, Typescript, Docker, Postgres, Kafka, Redis, Github Actions, Test Automation, Full Stack Development, Linux, Ai Evaluation, Software Engineering
Specialization
Requires 5+ years of software development experience, primarily in Python and full-stack development with React. Candidates should have a degree in Computer Science or a related field and B2 English proficiency.
Experience Required
Minimum 5 year(s)
Freelance Norwegian SEO Specialists at Social Element
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Seo, Google Business Profile Optimization, Norwegian Language, Market Analysis, Content Optimization
Specialization
Requires native-level Norwegian fluency and a strong knowledge of the local market. Candidates must have proven SEO experience and background knowledge in fashion or sportswear brands.
Experience Required
Minimum 2 year(s)
Freelance Creative Designer (m/f/d) at Saypien
Berlin, , Germany - Full Time
Skills Needed
Meta Ad Creative, Visual Concepting, Motion Design, Static Design, Performance Data Iteration, Product Positioning, Digital Product Design, Independent Work
Specialization
Proven experience building high-converting Meta ad creatives with a portfolio of results. Ability to work independently and fast, with a strong interest in AI and digital tech products.
Experience Required
Minimum 2 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Hamburg, , Germany - Full Time
Skills Needed
Python, Fastapi, Javascript, Typescript, React, Docker, Postgres, Kafka, Redis, Functional Testing, Integration Testing, Ai Evaluation
Specialization
Requires over 5 years of software development experience with a core stack including Python, JavaScript/TypeScript, and various infrastructure tools. Must have B2+ English proficiency and experience in functional and integration testing.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
, , Germany - Full Time
Skills Needed
Python, Fastapi, Javascript, Typescript, React, Docker, Postgres, Kafka, Redis, Functional Testing, Integration Testing, Ai Evaluation
Specialization
Requires over 5 years of software development experience with a core stack including Python, JavaScript/TypeScript, and various infrastructure tools. Must possess B2+ English proficiency and experience in functional and integration testing.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Munich, Bavaria, Germany - Full Time
Skills Needed
Python, Machine Learning, Statistical Analysis, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Mlops, Tensorflow, Pytorch, Langchain, Pandas, Numpy, Scipy
Specialization
Requires 5+ years of machine learning experience with expert-level Python and statistical analysis skills. Proficiency in GenAI technologies, MLOps, and strong written English (C1+) is expected.
Experience Required
Minimum 5 year(s)
Freelance Agent Evaluation Engineer at Mindrift
Stuttgart, Baden-Württemberg, Germany - Full Time
Skills Needed
Python, Fastapi, Pytest, React, Javascript, Typescript, Docker, Postgres, Kafka, Redis, Github Actions, Test Automation, Full Stack Development, Linux, Ai Evaluation, Software Engineering
Specialization
Requires 5+ years of software development experience, primarily in Python and full-stack development with React. A degree in Computer Science or a related field and B2 English proficiency are preferred.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Stuttgart, Baden-Württemberg, Germany - Full Time
Skills Needed
Python, Machine Learning, Data Science, Pandas, Numpy, Scipy, Scikit Learn, Statsmodels, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Tensorflow, Pytorch
Specialization
Requires 5+ years of hands-on machine learning experience with a strong portfolio of real-world problem-solving. Candidates must demonstrate expert-level proficiency in Python, statistical analysis, and modern AI frameworks.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Python, Machine Learning, Data Science, Pandas, Numpy, Scipy, Scikit Learn, Statsmodels, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Tensorflow, Pytorch
Specialization
Requires 5+ years of hands-on machine learning experience with a strong portfolio of real-world problem-solving. Candidates must demonstrate expert-level proficiency in Python, statistical analysis, and modern machine learning frameworks.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Hamburg, , Germany - Full Time
Skills Needed
Python, Machine Learning, Data Science, Pandas, Numpy, Scipy, Scikit Learn, Statsmodels, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Tensorflow, Pytorch
Specialization
Requires 5+ years of hands-on machine learning experience with a strong portfolio of real-world problem-solving. Candidates must possess expert-level proficiency in Python, statistical analysis, and modern machine learning frameworks.
Experience Required
Minimum 5 year(s)
Freelance Machine Learning Engineer at Mindrift
Munich, Bavaria, Germany - Full Time
Skills Needed
Python, Machine Learning, Data Science, Pandas, Numpy, Scipy, Scikit Learn, Statsmodels, Sql, Genai, Llms, Rag, Prompt Engineering, Vector Databases, Tensorflow, Pytorch
Specialization
Requires 5+ years of hands-on machine learning experience with a strong portfolio of real-world problem-solving. Candidates must possess expert-level proficiency in Python, statistical analysis, and modern AI frameworks.
Experience Required
Minimum 5 year(s)
AI Trainer - Freelance Data Annotator at Toloka Annotators
, , Germany - Full Time
Skills Needed
Data Annotation, Content Rating, Fact Checking, Logical Thinking, English Proficiency, Attention To Detail, Communication Skills, Reasoning
Specialization
Requires a bachelor's degree and at least one year of professional experience. Candidates must have advanced English proficiency (C1 or higher) and strong analytical reasoning skills.
AI Trainer - Freelance Data Annotator at Toloka Annotators
Hamburg, , Germany - Full Time
Skills Needed
Data Annotation, Content Rating, Fact Checking, Logical Thinking, English Proficiency, Attention To Detail, Communication Skills, Reasoning
Specialization
Requires a bachelor's degree and at least one year of professional experience. Candidates must have advanced English proficiency (C1 or higher) and strong reasoning abilities.
AI Trainer - Freelance Data Annotator at Toloka Annotators
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Data Annotation, Fact Checking, Logical Thinking, English Proficiency, Content Classification, Attention To Detail, Communication Skills, Reasoning Abilities
Specialization
Requires a bachelor's degree and at least one year of professional experience. Candidates must have advanced English proficiency (C1 or higher) and strong analytical skills.
AI Trainer - Freelance Data Annotator at Toloka Annotators
Frankfurt, Hesse, Germany - Full Time
Skills Needed
Data Annotation, Fact Checking, Logical Thinking, Reasoning, Attention To Detail, Communication Skills, Artificial Intelligence, Generative Ai, Content Labeling, Content Classification
Specialization
Requires a bachelor's degree in any discipline and at least one year of professional experience. Candidates must have an advanced level of English (C1 or higher) and strong analytical abilities.
AI Trainer - Freelance Data Annotator at Toloka Annotators
Berlin, , Germany - Full Time
Skills Needed
Data Annotation, Fact Checking, Logical Thinking, Reasoning, Attention To Detail, Communication Skills, Artificial Intelligence, Generative Ai, Content Labeling, Content Classification
Specialization
Requires a bachelor's degree in any discipline and at least one year of professional experience. Candidates must possess an advanced level of English (C1 or higher) and strong logical reasoning abilities.