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 9m

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

Engineering excellence

All Machine Learning Engineers who have applied to Proxify are scored from 0 to 300 on engineering excellence, one of the five parameters we evaluate. This score reflects engineering excellence only, based on interviews, take-home assignments, live coding sessions, and/or on-the-job performance reviews. The curve shows how all evaluated Machine Learning Engineers are distributed across that range, where our acceptance threshold for this parameter sits, and where Traian stands.

050100150200250300Engineering excellence scoreShare of engineersmedianmeanProxifyacceptancethreshold
Traian
Score 178 · Top 15% of engineers

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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