Senior Python Developer Jobs in Halifax, NS (NOW HIRING)

CBCL is seeking a Junior AI Developer - Document Intelligence & Local Model Deployment to help design, build, and maintain a self-hosted AI platform that extracts structured information from complex technical documents and automates quality assurance workflows. The platform runs entirely on local GPU hardware using open-source models. No cloud APIs. No external data dependencies; full data sovereignty.

This is a greenfield build. You won't be fine-tuning a chatbot or plugging into someone else's API - you'll be standing up local inference infrastructure, building document processing pipelines, and delivering a working prototype on real project data within your first term.

You will work directly with experienced engineers and technical staff who will provide domain expertise, validation feedback, and real-world test cases. This position is a 4-month term with the possibility of extension based on project milestones and mutual fit.

We are actively investing in applied artificial intelligence to improve how we deliver engineering services. Our AI development is done in-house, on our own infrastructure, using open-source tools - an approach driven by our commitment to client data sovereignty and our belief that the firms who build their own capabilities will lead the next generation of engineering practice.

Your Key Responsibilities:

• Assist in the design and development of internal AI tools and models supporting engineering projects
• Deploy and configure open-source AI models on local GPU infrastructure running Linux
• Build a document ingestion and processing pipeline for structured and unstructured technical content
• Build context retrieval pipelines that give the model access to domain-specific reference material at inference time
• Design and iterate on prompt templates that produce consistent, structured outputs from the model
• Work with engineers and technical staff to validate model outputs against real project data - you'll learn the domain from the people who know it
• Maintain clean, well-documented code in Git from day one
• Document your architecture decisions, model configurations, and pipeline logic so the system is reproducible and maintainable

Your Capabilities and Credentials:

• Enrolled in or recently completed a degree in Computer Science, Software Engineering, or a related field (senior undergraduate, M.Sc., or equivalent practical experience)
• Strong proficiency in Python
• Hands-on experience deploying and running open-source language models or vision-language models locally (e.g., local inference servers, quantized model deployment, or self-hosted model serving)
• Experience processing PDFs or other document formats programmatically
• Comfortable working in Linux (Ubuntu) from the command line
• Working knowledge of Git for version control and collaborative development

Strong Assets:

• Experience building context retrieval or semantic search pipelines (vector search, embedding models, retrieval strategies)
• Familiarity with computer vision or object detection workflows
• Experience with web application development (Python backend and/or modern JS frontend)
• Exposure to GPU configuration and model optimization
• Familiarity with some combination of the following open-source tools and frameworks: Ollama, vLLM, LangChain, LlamaIndex, Hugging Face Transformers, PyMuPDF, Tesseract, OpenCV, Ultralytics, Detectron2, FastAPI, Streamlit, Gradio, ChromaDB, FAISS, Label Studio, Docker
• Any experience with engineering drawings, construction documents, CAD, or technical documentation of any kind

What you'll work with:

• A dedicated GPU workstation running Linux
• Open-source AI models running locally
• A Python-based development environment with mature libraries for document processing, ML, and web development
• Real project data from an established engineering consulting firm - not toy datasets
• Direct access to experienced engineers who will co-develop the domain logic with you

Why this role is different:

• You'll own the build. This is a greenfield project, not a ticket queue. You'll make architecture decisions that shape how the system works.
• It's real. You'll work with actual project data, get feedback from the people who use the output, and see whether your pipeline catches real issues.
• It's self-hosted and open source. Everything runs on local hardware with zero cloud dependencies. If you care about data sovereignty, open-source AI, and building things that don't phone home, this is your project.
  
• There's a long runway. This 4-month term is Phase 1 of a multi-phase initiative. Strong performers have the opportunity to continue into subsequent phases with increasing technical scope and complexity.

About Us

At CBCL our purpose is to create a positive and lasting impact on people and our planet. As an employee-owned firm, at CBCL, our people are everything. We are committed to promoting inclusivity and diversity for a workplace where everyone can thrive, and we build long-term relationships with our clients while providing them with innovative solutions.

We have earned recognition as one of Canada's Top 100 Employers and one of Canada's Best Managed Companies.Our multitalented group of professionals offer consulting in the Infrastructure, Water and Wastewater, Buildings, Industrial, and Earth and Environment sectors. We value our people, our communities, and our history and look forward to continuing our steady growth.

Along with our commitment to reducing our carbon footprint corporately, CBCL develops and implements sustainable engineering solutions that respect the current social and environmental impacts, as well as future implications of our designs.

CBCL operates from its offices in Halifax and Sydney, NS; Charlottetown, PE; Saint John, Fredericton and Moncton, NB; St. John's, NL, and Ottawa, ON.

CBCL Limited strives to provide a diverse workplace that is inclusive, accessible and celebrates individuals and what makes us unique. We are proud to be an employer partner with the Canadian Centre for Diversity and Inclusion and Pride at Work.

We are committed to creating an inclusive and accessible workplace for all. If you require accommodations at any stage of the recruitment or interview process, or while working with us, please email hr@cbcl.ca. We will work with you to meet your needs in a respectful and timely manner.

Our goal is to ensure every candidate has a fair opportunity to demonstrate their abilities. We value diverse perspectives and are dedicated to removing barriers that may prevent individuals from thriving in their roles.

We thank all applicants for their interest, but only those applicants who are selected to interview will be contacted.