Senior Security Engineer
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
5+ ansCandidates need 5+ years in application or product security or security operations, with deep knowledge of common vulnerabilities, cloud and network security, and secure engineering. They must be hands-on, comfortable with ambiguity, and able to explain security problems to technical and non-technical audiences.
SAST tools, DAST tools
Forward Deployed Engineer, Agentic Platform
Ottawa, ON +2Cohere: Cohere is the leading security-first enterprise AI company.
Candidates need hands-on experience building production Python software, deploying RAG and agentic LLM applications, and building evaluation frameworks. They also need experience leading technical discussions with enterprise stakeholders and owning use cases end to end.
Python, vector databases, LLM orchestration frameworks, North platform
Member of Technical Staff - Sovereign AI
Toronto, ONCohere: Cohere is the leading security-first enterprise AI company.
Candidates need Canadian citizenship and eligibility for security clearance, plus extremely strong software engineering skills in Python and ML frameworks. Experience training, evaluating and using large language models, and with large-scale distributed GPU training, is required; publications at top venues are a bonus.
Python
Senior Research Scientist, Model Evaluation
Toronto, ONCohere: Cohere is the leading security-first enterprise AI company.
Candidates need experience rapidly prototyping LLM capabilities and reviewing complex data and model outputs for quality. They must rigorously measure AI capabilities and have strong software engineering skills.
Research
Member of Technical Staff, Agent Code
Toronto, ONCohere: Cohere is the leading security-first enterprise AI company.
Cohere needs candidates with a PhD in computer science, machine learning or a related field, with top-venue publications, deep code LLM and agent expertise, and strong Python and PyTorch or TensorFlow skills. Experience with distributed systems and cloud infrastructure is also required.
PyTorch, TensorFlow, Python
Member of Technical Staff, Integration/RL Team (Research Engineer)
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
Candidates need very strong software engineering skills, proficiency in Python and ML frameworks such as JAX, PyTorch or XLA/MLIR, and experience debugging large-scale distributed training. Test-driven development and clean code habits are valued. Experience with Kubernetes, Ray, post-training and ML or RL research are bonus qualifications.
Python, JAX, PyTorch, XLA/MLIR, Kubernetes, Ray
Member of Technical Staff, Pre-Training Data
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
Candidates need strong Python and data pipeline engineering skills, familiarity with data mixing and data processing frameworks, and experience with large-scale web, code and multilingual datasets. A research-oriented mindset bridging research and engineering is valued.
Python, Apache Spark, Apache Beam, Pandas
Member of Technical Staff, Data Analysis and Evaluation
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
Cohere needs candidates with extremely strong software engineering skills, statistical expertise in evaluating experiments, and experience designing data collection with human annotators. Candidates also need hands-on LLM training on distributed infrastructure, proficiency in Python and ML frameworks, and strong communication skills. One or more papers at top-tier venues are listed as a qualification.
Python, PyTorch, TensorFlow, JAX
Member of Technical Staff, Post-Training
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
Candidates need extremely strong software engineering skills, proficiency in Python and ML frameworks like JAX and PyTorch, and hands-on experience training large models with distributed infrastructure. Post-training experience with a focus on performance optimisation is essential.
Kubernetes, Slurm, Ray, JAX, PyTorch, XLA
Member of Technical Staff, Training Infra Engineer
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
Candidates need strong software engineering skills, proficiency in Python and ML frameworks such as JAX, PyTorch and XLA/MLIR, and experience with distributed training on Kubernetes, Slurm and Ray. Hands-on experience training large models at scale and contributing to training infrastructure is required.
Python, JAX, PyTorch, XLA, MLIR, Kubernetes
Member of Technical Staff, Training Performance Engineer
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
Candidates need extremely strong software engineering skills, proficiency in Python and ML frameworks such as JAX, PyTorch and XLA/MLIR, and experience writing GPU kernels with CUDA or Triton. Experience with large-scale distributed training and transformer sequence models is also required.
CUDA, Triton, PyTorch, JAX, XLA, MLIR
Senior Member of Technical Staff, Multimodal AI
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
Candidates need exceptional software engineering skills, strong Python, and experience with deep learning frameworks such as JAX, PyTorch and TensorFlow. Experience with distributed training, autoregressive models and evaluating large multimodal models is also expected.
Python, JAX, PyTorch, TensorFlow, CUDA, HuggingFace
Member of Technical Staff, Modeling
Toronto, ON +1Cohere: Cohere is the leading security-first enterprise AI company.
Candidates need extremely strong software engineering skills and proficiency in Python and ML frameworks. Experience writing GPU kernels with CUDA, large-scale distributed training and autoregressive sequence models such as Transformers is also expected.
Python, TensorFlow, TF-Serving, JAX, XLA, MLIR
Senior Full-Stack Engineer, Annotation Platform
Toronto, ON +3Cohere: Cohere is the leading security-first enterprise AI company.
Cohere asks for experience shipping products with many stakeholders and comfort across the full stack, including Next.js, TypeScript, React and Python. Candidates also need hands-on complex SQL skills and strong written and verbal communication.
ML, Next.js, TypeScript, React, Python, SQL