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TrinetixTR

Senior Data Science Engineer

Trinetix is a global custom software development partner that helps businesses transform their operations and achieve growth through innovative technology solutions, specializing in AI, automation, mobile, and cloud services.

Trinetix

Employee count: 501-1000

Poland only

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We are seeking a skilled Data Science Engineer to design, build, and deploy production machine learning solutions for an enterprise Fleet Cascading & Optimization Platform managing 46,000+ vehicles across 545+ locations. In this role, you will develop and operationalize demand forecasting, cascading optimization, contract intelligence (NLP/Vision), and out-of-spec prediction models with a strong focus on explainability and business impact. You will own the end-to-end ML lifecycle — from experimentation and model development to scalable production deployment on AWS—working closely with engineering and business stakeholders to deliver reliable, data-driven outcomes.

Must-Have Requirements

  • Programming & ML Frameworks: Python; PyTorch or TensorFlow; scikit-learn; XGBoost or LightGBM; pandas; NumPy
  • Time Series & Forecasting: BSTS; Prophet; Temporal Fusion Transformer (TFT); hierarchical forecasting with MinT reconciliation
  • Optimization: Linear Programming and MILP using tools such as PuLP and OR-Tools; constraint satisfaction; min-cost flow optimization
  • AWS ML Stack: Amazon SageMaker (Training Jobs, Endpoints, Model Monitor, Clarify, Feature Store, Pipelines)

Nice-to-have

  • NLP & Document AI: Amazon Textract; LayoutLMv3; Retrieval-Augmented Generation (RAG) pipelines; Amazon Bedrock (Claude); OpenSearch vector databases
  • Advanced Machine Learning: Graph Neural Networks (GNNs); Deep Reinforcement Learning; Survival Analysis (Cox Proportional Hazards, XGBoost-Survival); attention-based models
  • Explainability & MLOps: SHAP, LIME, Captum; MLflow; A/B testing; champion/challenger frameworks; model and data drift detection

Core Responsibilities

  • Build demand forecasting models (XGBoost, BSTS, Temporal Fusion Transformer) with hierarchical reconciliation across 545+ locations
  • Develop cascading optimization using MILP/Min-Cost Flow solvers (PuLP, OR-Tools, Gurobi) and Hybrid ML+Optimization pipelines
  • Implement document intelligence pipeline: Textract + LayoutLMv3 for document extraction, RAG with Bedrock (Claude) for semantic reasoning
  • Deploy models on SageMaker with MLOps (Model Monitor, Feature Store, Pipelines); implement SHAP/LIME explainability

Models You’ll Build

  • Demand Forecasting: Gradient-boosted models (XGBoost), Bayesian Structural Time Series (BSTS), and Temporal Fusion Transformers (TFT), including hierarchical reconciliation
  • Cascading Optimization: Mixed-Integer Linear Programming (MILP) and Min-Cost Flow models, evolving to hybrid ML + solver approaches and advanced Graph Neural Network (GNN) and Deep Reinforcement Learning (DRL) solutions
  • Document Intelligence: Automated document extraction using Amazon Textract and LayoutLMv3, advancing to Retrieval-Augmented Generation (RAG) pipelines with Amazon Bedrock and Vision-Language Models
  • Survival & Out-of-Spec Prediction: Kaplan–Meier estimators, Cox Proportional Hazards models, and XGBoost-Survival techniques

What we offer

  • Continuous learning and career growth opportunities
  • Professional training and English/Spanish language classes
  • Comprehensive medical insurance
  • Mental health support
  • Specialized benefits program with compensation for fitness activities, hobbies, pet care, and more
  • Flexible working hours
  • Inclusive and supportive culture

About Us

Established in 2011, Trinetix is a dynamic tech service provider supporting enterprise clients around the world.

Headquartered in Nashville, Tennessee, we have a global team of over 1,000 professionals and delivery centers across Europe, the United States, and Argentina. We partner with leading global brands, delivering innovative digital solutions across Fintech, Professional Services, Logistics, Healthcare, and Agriculture.

Our operations are driven by a strong business vision, a people-first culture, and a commitment to responsible growth. We actively give back to the community through various CSR activities and adhere to international principles for sustainable development and business ethics.

To learn more about how we collect, process, and store your personal data, please review our Privacy Notice: https://www.trinetix.com/corporate-policies/privacy-notice

About the job

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Job type

Full Time

Experience level

Mid-level

Location requirements

Hiring timezones

Poland +/- 0 hours

About Trinetix

Learn more about Trinetix and their company culture.

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We are Trinetix, a global team of creators and trailblazers dedicated to empowering world-renowned brands and fast-growing businesses to deliver 360° value through transformative products and ideas. Our journey began in 2011, and since then, we've been driven by a passion for innovation and a commitment to helping our clients navigate the ever-evolving digital landscape. Our exploratory approach uniquely merges design, technology, and strategy under one roof. This allows us to not only help our clients adapt to change but also to proactively shape a more promising future for their customers and their own talented teams. We believe in fostering a culture that encourages creativity and empowers our people to unleash their full potential. It's by investing in our diverse global team of over 1100 talents that we are able to drive the kind of innovation that consistently exceeds our clients' expectations and helps them discover unconventional pathways to achieve their most ambitious goals.

Our mission is to unlock new opportunities for individuals and organizations, enabling them to tackle today's challenges and actively shape the future. We are continuously on the lookout for new ways to innovate and push beyond conventional boundaries, always striving to be the premier technology partner for leading brands and top talent globally. We aim to drive exceptional value at the speed of digital. This vision is underpinned by our core values: value-centricity, where our teams continually seek actions that rapidly create value for everyone we work with; purpose-driven innovation, focusing on mission-aligned advancements that contribute to positively changing people's lives; boundless creativity, cultivated by an environment that fosters co-creation and empowers individuals to become their best selves; and a deep commitment that builds lasting trust with our clients and partners. With over 2,400 successful client engagements and having enabled over $4 billion in revenue for our clients, we're proud of the impact we've made across various industries, including professional services, logistics, financial services, healthcare, and agriculture.

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