Senior Computer Vision Engineer – Classical & Deep Learning (f/m/x)

About the Position

We are looking for a Senior Computer Vision Engineer – Classical & Deep Learning (f/m/x) to join our team in Białystok, Poland. This role is available as a CONTRACTOR with a salary range of 6000-8000 PLN per hour.

Responsibilities

• Design and implement vision systems combining classical and learning-based approaches
• Apply geometric computer vision in practice: camera calibration, stereo and multi-view geometry, feature detection and matching, pose estimation, structure-from-motion, and visual SLAM
• Build, train, and fine-tune deep learning models for object detection, semantic and instance segmentation, multi-object tracking, OCR, and anomaly detection using PyTorch
• Develop image processing pipelines with OpenCV and NumPy: filtering, morphology, thresholding, contour analysis, and color space operations
• Optimize models and pipelines for deployment: quantization, pruning, ONNX/TensorRT conversion, and real-time inference on edge devices and GPUs
• Own data quality end-to-end: dataset design, annotation strategy, augmentation, and systematic error analysis on real-world imagery
• Build evaluation frameworks that measure what matters in production - not just mAP on a benchmark, but failure modes under real conditions
• Collaborate with AI Architects and ML engineers to integrate vision components into larger systems, on-prem and in the cloud

Requirements

• At least 5 years in computer vision engineering, with vision systems shipped to production
• Solid grounding in geometric vision: projective geometry, camera models, epipolar geometry, and 3D reconstruction fundamentals
• Hands-on deep learning experience: training and deploying CNN- and transformer-based models for real applications
• Strong Python and OpenCV skills; comfort with PyTorch and the surrounding ecosystem (torchvision, Albumentations, ONNX)
• Experience optimizing inference for constrained environments - latency budgets, embedded hardware, or high-throughput video
• The judgment to pick a homography over a transformer when the problem calls for it - and to defend that choice
• Ability to work autonomously while collaborating effectively with architects, engineers, and product teams
• Fluent English (both written and spoken)
• Fluent Polish required
• Residing in Poland required

Nice to Have

• C++ skills for performance-critical pipelines and integration with existing vision systems
• Previous work with visual SLAM, sensor fusion (LiDAR, radar, IMU), or autonomous driving perception stacks
• Exposure to vision-language models (CLIP, Grounding DINO) and foundation-model-based labeling or zero-shot pipelines
• Experience deploying on NVIDIA Jetson, industrial cameras (GenICam/GigE), or cloud vision services on Azure, AWS, or GCP

We Offer

• AI Grant - Stop talking about AI and start building it. Our AI Grant gives you dedicated budget and resources to turn your wildest AI idea into a working project, backed by two paid weeks to focus on nothing else.
• AI Center of Excellence - Work alongside specialists in agentic AI, sovereign AI, generative and discriminative AI.
• Your tools, your choice - Full access to AI-powered development tools including Claude, Cursor, and GitHub Copilot.
• Real project variety - From generative AI for legal document compliance through agentic systems in manufacturing environments to enterprise-scale AI platforms, computer vision, and autonomous driving.
• Conference and speaking support - Want to attend conferences? We’ll back you. Want to speak at them? Even better - we’ll support you with dedicated preparation time and bonuses.

About the Company

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.