Andreas W.-Independent Algorithmic Trader | AI Data & Model Quality Specialist
Check rate
Experience
AI Model Training & Data Quality Specialist
- Work as a German/English Language Expert evaluating and rating AI model responses for accuracy, reasoning quality, and natural language use at native/C-level proficiency in both languages.
- Perform structured data annotation and transcription tasks, applying detailed guideline-based scoring and edge-case judgment.
- Conduct Visual Quality Evaluation, assessing AI-generated and model-processed images and video for visual artifacts, factual/compositional accuracy, and adherence to detailed guideline criteria.
- Evaluate and annotate Text-to-Speech (TTS) model output, assessing pronunciation accuracy, prosody, naturalness, and audio quality against structured guideline criteria.
- Evaluate Speech-to-Speech (STS) model interactions, rating conversational audio for naturalness, tone, latency, and response appropriateness in real-time voice-to-voice exchanges.
- Manage concurrent workloads across several platforms simultaneously, prioritizing by task quality and throughput to meet weekly output targets.
Independent Algorithmic Trader & Quantitative Data Analyst
Sole Proprietor (Self-Employed)
- Trade a statistics-driven, probability-based intraday methodology on major index futures (DAX, Nikkei) — quantifying historical session behavior and opening-range statistics to identify repeatable edges before committing capital.
- Design, code, and debug algorithmic trading logic and custom indicators in Pine Script, Python, and C#, including Lorentzian Distance Classification, k-NN pattern recognition, and market-structure (BOS/CHoCH) models.
- Built and deployed two production-grade automated trading bots during an intensive ~500-hour development sprint, reaching 370–780ms execution latency from signal to order submission.
- Ported and adapted multiple technical indicators across TradingView, Python, and C#, preserving exact 1:1 logic across platforms.
- Operate across a multi-platform technology stack — cTrader (native Python/C#), NautilusTrader, TradingView, Interactive Brokers (IBKR), and MT5 — managing capital across multiple proprietary trading firms and private accounts.
- Perform continuous quantitative and qualitative analysis of macroeconomic data (inflation, interest rates, sentiment) and high-volume live market feeds, applying rigorous data verification and quality control to eliminate noise and false signals.
- Apply statistical and risk-analytics frameworks to optimize position sizing, capital allocation, and risk-to-reward ratios under volatile market conditions.
Front Desk Shift Leader / Manager on Duty
Berlin Mark Hotel (GCH Hotel Group)
- Promoted to Shift Leader on 01 July 2019 in recognition of strong performance; independently ran full shifts and shift handovers and coordinated the implementation of service standards and workflows.
- Controlled reservations and room allocation according to guest preferences, and handled arrival/departure formalities for both group and individual guests.
- Managed guest relations and complaint resolution, invoicing/billing, and cash handling across payment methods; processed front-desk correspondence and filing.
- Acted as substitute Front Office Manager (Manager on Duty), including representing the department, contributing to duty rosters, and holding instructional authority over front-desk staff.
- Maintained high data accuracy in customer records, invoicing, and system audits using OPERA 5.0 property-management software; ensured compliance with workplace safety and hygiene standards.
- Trained new employees and mentored apprentices, and stepped in flexibly as needed in accounts receivable and as Night Auditor.
Front Desk Agent
Berlin Mark Hotel
- Transitioned directly into a full-time Front Office role after successfully completing an accelerated apprenticeship, and was promoted to Shift Leader within five months based on performance.
- Managed check-in/check-out procedures, reservations, and cross-departmental communication with meticulous data accuracy and a strong service orientation.
Independent Market Researcher — Trading & Financial Markets
Self-Employed
- Self-directed, intensive study of financial markets during formative years, building foundational expertise in technical and fundamental analysis, chart reading, and market structure across Forex, indices, and commodities.
- Studied macroeconomic concepts (interest rates, inflation, sentiment) and how they translate into price behavior, laying the analytical groundwork later applied professionally as an algorithmic trader.
- Developed early risk-management principles and a disciplined, systems-based approach to markets entirely through self-study, without formal financial education.
- Supported living expenses and gained early professional experience through casual and part-time work alongside this self-directed research.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Banking and Finance, Tourism, and Information Technology.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Research and Development, Finance, Investments and M&A, Information Technology, Business Intelligence, and Customer Service.
Summary
Self-employed algorithmic trader specializing in statistical, probability-based intraday trading across Forex, indices, and commodities — identifying and validating repeatable edges from large historical datasets (session behavior, opening-range statistics, pattern probabilities) rather than relying on discretionary reads. Designs, codes, and deploys machine-learning-driven trading systems (Lorentzian Distance Classification, k-NN, market-structure detection) in Pine Script, Python, and C#, achieving sub-second execution latency across multiple prop-trading platforms. In parallel, built a second professional track in AI model training and data quality evaluation, delivering consistently high-accuracy annotation, transcription, and response-quality grading work across several leading AI data platforms. Combines strong self-directed technical learning, rigorous quality control, and disciplined risk management with a fast, structured, get-it-done work style.
Skills
- Trading & Quant: Statistical / Probability-Based Trading, Historical Pattern & Session Analysis, Opening-Range Statistics, Technical Analysis, Multi-Asset Trading (Forex, Indices, Commodities), Risk And Capital-Allocation Frameworks, Multi-Broker/Prop-Firm Operations
- Programming & Platforms: Python, C#, Pine Script, Ctrader, Nautilustrader, Tradingview, Interactive Brokers (Ibkr), Mt5, Opera 5.0
- Machine Learning: K-Nn, Lorentzian Distance Classification, Gradient Boosting, Random Forests, Market-Structure (Bos/Choch) Modeling
- Ai Data & Evaluation: Data Annotation & Labeling, Transcription, Response-Quality Grading, Guideline-Based Qa, Edge-Case And Error Analysis, Multilingual (De/En) Model Evaluation
- Soft Skills: Analytical Thinking, Systems Thinking, Attention To Detail, Self-Direction, Operational Management, Fast And Structured Execution
Languages
Education
Brillat-Savarin School (OSZ Hospitality)
Hotel Specialist · Hospitality Industry · Berlin, Germany · 1.0
Gröbenzell/Puchheim High School
High School · Languages and Business · Gröbenzell, Germany
Certifications & licenses
Certified Hotel Industry Expert (Hotel Specialist)
Berlin Mark Hotel / Brillat-Savarin School (OSZ Hospitality)
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Andreas is based in Binz, Germany.
Andreas speaks the following languages: German (Native), English (Advanced), Spanish (Intermediate).
Andreas has at least 13 years of experience. During this time, Andreas has worked in at least 5 different roles and for 4 different companies. The average length of individual experience is 3 years and 6 months. Note that Andreas may not have shared all experience and actually has more experience.
Based on recent experience, Andreas would be well-suited for roles such as: AI Model Training & Data Quality Specialist, Independent Algorithmic Trader & Quantitative Data Analyst, Front Desk Shift Leader / Manager on Duty.
Andreas's most recent position is AI Model Training & Data Quality Specialist.
In recent years, Andreas has worked for Sole Proprietor (Self-Employed).
Andreas is most experienced in industries like Banking and Finance, Tourism, and Information Technology.
Andreas is most experienced in business areas like Research and Development, Finance, and Investments and M&A. Andreas also has some experience in Information Technology, Business Intelligence, and Customer Service.
Andreas has recently worked in industries like Banking and Finance and Information Technology.
Andreas has recently worked in business areas like Information Technology, Research and Development, and Business Intelligence.
Andreas attended Brillat-Savarin School (OSZ Hospitality) for Hospitality Industry.
Andreas has 1 certificate: Certified Hotel Industry Expert (Hotel Specialist).
Andreas is immediately available full-time for suitable projects.
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Calculated based on our freelancers’ daily rates as of 27 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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