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Showing 20 results from 20 source listings checked · 1,715 UK listings on FreeHire.
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isomorphiclabs London hybrid Posted 27 days ago
Isomorphic Labs is applying frontier AI to help unlock deeper scientific insights, faster breakthroughs, and life-changing medicines with an ambition to solve all disease. The future is coming. A future enabled and…
Reflection New York, NY; London; San Francisco, CA onsite Posted 28 days ago
You will design, build, and own secure infrastructure for sensitive model evaluations. You will create sandboxed environments, controlled data pipelines, access controls, audit logging, evaluation orchestration tooling,…
Reflection New York, NY; London; San Francisco, CA onsite Posted 28 days ago
You will architect and optimize training infrastructure for reinforcement-learning loops, distributed GPU systems, and large-scale data pipelines. You will turn research ideas into reliable production systems, build…
Reflection New York, NY; London; San Francisco, CA onsite Posted 28 days ago
You will lead cross-functional programs that scale training infrastructure and cluster reliability across pre-training, mid-training, and post-training. You will coordinate engineering leads and external partners,…
Reflection New York, NY; London; San Francisco, CA onsite Posted 28 days ago
You will establish model evaluation and safety operations from the ground up. You will define evaluation frameworks and workflows, embed safety checkpoints into development, prioritize investments, coordinate external…
Reflection New York, NY; London; San Francisco, CA onsite Posted 28 days ago
You will embed with pre-training ML and data teams to coordinate research initiatives. You will manage experiment planning, scheduling, data readiness, technical handoffs, and research milestones while helping…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will own red-teaming and adversarial evaluation pipelines for AI models. You will identify security, misuse, and alignment failures; develop automated safety benchmarks; implement jailbreaking techniques and…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will research and build solutions for algorithms, scaling laws, data processing, optimizers, and model architecture. You will run experiments on language-model scaling and data efficiency, implement deep learning…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will build distributed systems for frontier-model pre-training and operate large-scale training runs. You will optimize throughput, stability, memory, communication, and GPU utilization; maintain pipelines for…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will design and operate multilingual data pipelines for sourcing, cleaning, deduplication, language identification, and script normalization. You will establish corpus quality standards, run experiments on data…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will conduct comparative analyses of model capabilities and build evaluation systems that link data, evaluations, and model behavior. You will develop frameworks for reasoning, alignment, and usefulness, collaborate…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will lead, mentor, and grow data ingestion engineers while remaining hands-on with the technical stack. You will prioritize work, run acquisition campaigns, guide architecture across crawling, pipelines, and data…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will define and operationalize measurable data-quality standards for LLM pre-training. You will analyze data, build and validate automated QA methods alongside human-in-the-loop processes, create reusable quality…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will define and operationalize measurable data-quality standards for LLM post-training and evaluation. You will analyze datasets, build and validate automated QA methods, create reusable quality pipelines, provide…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will build and operate systems that acquire, extract, normalize, version, and deliver large-scale data for pre-training. You will run experiments on crawling and extraction strategies, analyze data quality and…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will build systems that transform pre-trained models into aligned and general agents. You will develop data-generation pipelines, reward models, reinforcement-learning algorithms, and inference-time scaling…
Reflection New York, NY; London; San Francisco, CA onsite Posted 28 days ago
You will build and operate foundational cloud, networking, security, developer infrastructure, and observability capabilities. You will create secure defaults, operate networking primitives, improve delivery systems,…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will lead systems engineers building shared services for research, training, and production. You will prioritize work, guide distributed-systems architecture, make hands-on contributions, and translate research and…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will lead infrastructure and platform engineers building cloud, networking, security, and developer infrastructure. You will prioritize execution, guide architecture, make hands-on contributions, establish secure…
Reflection San Francisco, CA; London; New York, NY onsite Posted 28 days ago
You will lead and grow a data platform engineering team while guiding the technical direction of data ingestion, orchestration, processing, storage, quality, and governance. You will work hands-on on designs,…