
ML Engineer
- Hybrid
- Bucharest, București, Romania
Job description
Tech stack & ecosystem: (if applicable)
You will be the backbone of our ML platform, building everything from user-facing interfaces down to the data layers that feed our models:
Platform & API: Python, FastAPI, React, TypeScript.
Data Warehousing & Storage: Google Cloud Platform (GCP), BigQuery, Cloud Storage, Apache Parquet / Arrow.
Data & ML Orchestration: dbt, Apache Airflow, Kubeflow Pipelines (KFP), Asynchronous Job Queues (Celery/RabbitMQ).
Unstructured Data & GenAI: Vector Databases (e.g., Pinecone, Weaviate), modern RAG tooling (LangChain, LlamaIndex).
Data Quality & Contracts: Pydantic, Great Expectations, strict JSON Schema validation.
What You’ll Do
Own the API & Platform Layer: Design, build, and maintain the robust backend APIs (FastAPI) that serve as the bridge between our React frontend and our asynchronous, heavy-compute machine learning pipelines.
Build the User Interface: Develop and maintain features in our React frontend, creating intuitive platform dashboards that allow users to design ML experiments, trigger data augmentation jobs, and visualize synthetic data metrics.
Architect ML Data Pipelines: Build and maintain high-throughput ETL/ELT pipelines capable of ingesting massive tabular datasets directly into our Kubeflow training and inference workflows.
Build the RAG Foundation: Develop the data pipelines that power our LLM digital twins. You will handle chunking, embedding generation, and vector indexing of unstructured text to enable highly accurate Retrieval-Augmented Generation (RAG).
Optimize ML Data I/O: Optimize how our PyTorch models read and write data, leveraging columnar formats (Parquet) and distributed processing to eliminate I/O bottlenecks during training and generation.
Enforce Strict Data Contracts: Ensure seamless communication between the frontend, backend, and ML workers by implementing strict data contracts (using Pydantic) and automated schema validation.
Job requirements
What you’ll need [role requirements]:
Platform & Full-Stack Engineering
API Design & Backend: Proven experience building robust, highly available RESTful APIs in Python (FastAPI preferred). Experience managing asynchronous workloads and task queues.
Frontend Development: Solid experience building and maintaining modern, responsive web applications using React and TypeScript.
Infrastructure & CI/CD: Comfortable working with Git, CI/CD pipelines, Docker, and Infrastructure as Code to deploy platform services reliably.
Data Engineering & MLOps
Cloud Data Warehouses: Deep expertise in modern cloud data architectures, specifically Google Cloud Platform (BigQuery, GCS).
Pipeline Orchestration: Hands-on experience with modern data orchestration and transformation tools (e.g., Apache Airflow, dbt) and familiarity with ML orchestrators (Kubeflow, Vertex AI).
Familiarity with ML Workflows: You understand the data lifecycle of machine learning and know how to prepare data for training, inference, and evaluation.
Vector Data: Experience or strong familiarity with processing unstructured data and interacting with Vector Databases for semantic search/RAG architectures.
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