Traian V.

Traian V.

Machine Learning Engineer

Romania
Trusted member since 2025
6 years of experience

He developed intelligent response systems using domain-specific embeddings, LLM validation, and retrieval-augmented generation (RAG), as well as high-precision computer vision models—including Mask R-CNN, YOLOv5, and U-Net—applied in industries such as fashion, food tech, and manufacturing.

His work includes building PySpark ML pipelines that reduced SME loan defaults from 11% to 2%, and implementing real-time defect detection systems for manufacturing. Skilled in PyTorch, TensorFlow, Hugging Face, and cloud platforms, Traian consistently delivered scalable, production-ready AI systems.

Main expertise

PythonPython6 years
Machine LearningMachine Learning5 years
Data ScienceData Science5 years
Computer VisionComputer Vision5 years
16+

Experience6

Bluetweak

Machine Learning Engineer/Researcher

Bluetweak
Information Technology (IT) and Services
Jan 2025 · 1y 8m

Bluetweak is an omnichannel customer support platform that uses AI to improve workflows and response quality across communication channels.

  • Developed and implemented an intelligent response system that combined semantic template matching with domain-specific Sentence Transformers, LLM-based template validation, and RAG knowledge retrieval.
  • Fine-tuned the Stella400M model on real customer interactions to enhance semantic similarity matching and contextual understanding for domain-specific responses.
  • Integrated hybrid response selection logic to ensure high accuracy while maintaining strict business communication standards.
  • Improved customer support consistency by automating knowledge lookups and context retrieval from internal documentation.
PythonPython
AzureAzure
PyTorchPyTorch
SciPySciPy
Scikit-learnScikit-learn
7+

Machine Learning Engineer/Researcher

Apsisware (Arnia Software)
Information Technology (IT) and Services
Nov 2021 - Dec 2024 · 3y 1m

Apsisware is a subsidiary of Arnia Software that provides comprehensive machine learning solutions for clients in eCommerce, food tech, and retail sectors.

  • Developed and deployed object detection models (Mask R-CNN, YOLOv5) for a fashion recommender app and food recognition pipeline, achieving over 90% mAP.
  • Created classification (ResNet) and segmentation (U-Net) models for automated product tagging and food item identification.
  • Deployed optimized inference models on Raspberry Pi 4 devices using the NCNN C++ framework, including model quantization.
  • Contributed to a 3D apartment reconstruction pipeline from monocular video utilizing Droid-SLAM, Polygon-Transformer, and Cube R-CNN.
  • Built a shopping assistant with an in-domain BERT classifier (F1 score 0.93) and fine-tuned an Octopus 2B model with Q-LoRA for query routing (accuracy 0.85).
  • Implemented a RAG-based recipe recommendation system for a grocery retailer using Llama Index.
  • Developed an anomaly detection pipeline for identifying foreign objects in ovens through a hybrid VLM reasoning approach (Qwen2-VL + Llama3-8B).
PythonPython
C++C++
OpenCVOpenCV
PyTorchPyTorch
NLP
8+
October

Data Scientist

October
Financial Technology (FinTech)
Nov 2020 - Oct 2021 · 11m

October is a neo-lending platform that provides fast financing to SMEs, aiming to disrupt traditional banking with data-driven credit processes.

  • Designed a PySpark-based feature engineering and model training pipeline from transactional datasets.
  • Built and deployed an LGBM credit risk model that reduced SME loan default rates from ~11% to ~2%.
  • Developed an OCR-based tool that processed financial statements from scanned PDFs using OpenCV, AWS Textract, and Lambda functions.
  • Delivered APIs for real-time risk scoring and integrated them with internal credit approval workflows.
AWSAWS
FlaskFlask
PythonPython
SQLSQL
AWS LambdaAWS Lambda
7+
SIG

Data Scientist

SIG
Artificial Intelligence (AI)
Mar 2020 - Oct 2020 · 7m

Software Improvement Group (SIG) is a Netherlands-based company specializing in software quality assurance and risk assessment.

  • Developed an end-to-end machine learning pipeline for image-based defect detection on carton packaging.
  • Applied image segmentation and classification models (Mask R-CNN, EfficientNet) to identify micro-defects and misprints in high-resolution scans.
  • Created an automated labeling pipeline using weak supervision techniques to accelerate dataset creation.
  • Integrated the solution into the production line’s quality control workflow, reducing manual inspection times by 60%.
PythonPython
AzureAzure
Data ScienceData Science
NumPyNumPy
OpenCVOpenCV
9+
Royal Dutch Shell

Machine Learning Engineer

Royal Dutch Shell
Energy and Utilities
Oct 2019 - Feb 2020 · 4m

Shell is a global energy company operating in over 70 countries, focusing on oil, gas, and renewable energy.

  • Developed a machine learning solution for predicting maintenance needs of refinery equipment using sensor time-series data.

  • Implemented anomaly detection algorithms (Isolation Forest, LSTM Autoencoders) to identify early signs of equipment failure.

  • Deployed models to AWS pipelines, enabling ongoing retraining and monitoring.

  • Collaborated with mechanical engineers to integrate alerts into SCADA systems for real-time response.

AWSAWS
PythonPython
Machine LearningMachine Learning
Computer VisionComputer Vision
MSG Systems Romania

Software Engineer

MSG Systems Romania
Information Technology (IT) and Services
Mar 2019 - Sep 2019 · 6m

MSG Systems offers consulting, software development, and system integration services for industries such as automotive, insurance, and public administration.

  • Built NLP pipelines for automated document processing in the insurance sector, extracting entities and intent from unstructured text.

  • Utilized spaCy and BERT-based models for policy classification and claim routing.

  • Created a topic modeling tool (LDA, NMF) to group customer queries and identify trends to improve processes.

  • Integrated models with internal CRM systems via REST APIs for real-time data processing.

JavaScriptJavaScript
JavaJava
SQLSQL
REST APIREST API

Assessments

Engineering excellence

Traian’s overall performance in a 90-minute live technical assessment ranks in the top 5% of vetted Machine Learning Engineers at Proxify.

Education

University of Amsterdam
University of Amsterdam
Artificial Intelligence2018 - 2020
BFO
Babes-Bolyai Faculty of Mathematics and Informatics
Computer Science2015 - 2018

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