Machine Learning Engineer

Two developers, a designer and a support lead make up most of the company, so everyone touches the product. Customers who call us usually reach someone who wrote the code they are asking about. Founded in 2020, we now have 16 employees. Releases go out Tuesday mornings, never on Fridays.

Looking for a Machine Learning Engineer who wants to stay somewhere for a while. We're looking for an engineer to build retrieval-augmented generation features on hosted and open-weight language models, with proper evaluation. The Search and Recommendations team trains and serves models that run on every customer request. We need someone who cares about latency as much as accuracy. Remote, with occasional travel to Lisbon (a few times a year).

Job duties

• Write clean, tested Python and review teammates' code
• Build training pipelines in PyTorch or TensorFlow and run them on GPUs in AWS, GCP or Azure
• Orchestrate pipelines with Kubeflow, SageMaker Pipelines, Vertex AI or Airflow
• Deploy models behind low-latency APIs with FastAPI, Triton, TorchServe or vLLM
• Develop RAG pipelines with embeddings, vector stores (pgvector, Pinecone, Weaviate) and rerankers
• Document model cards, data sources and known failure modes
• Cut inference cost with quantization, batching and caching

What we're looking for

• 2-4 years of software engineering experience, with at least two spent on ML systems in production
• Hands-on experience with PyTorch, TensorFlow or JAX
• Experience deploying models as services and monitoring them

Desirable

• CUDA or Triton kernel experience
• Recommendation or ranking systems at scale

Compensation and benefits

• Private health insurance
• Training budget
• Flexible start and finish times
• Remote work allowance
• Meal vouchers

The posting will close once we have a strong shortlist.

Only shortlisted candidates will be contacted.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at RT Cloud Lda..