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callosum
1 views 2 weeks ago

Compliance Lead - Member of Technical Staff

Open 15d On-siteUKLead Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

Oversees compliance, certifications (SOC 2, ISO 27001, ISO 42001, AI standards), and regulatory readiness for Callosum’s heterogeneous AI infrastructure. Ensures alignment between global standards, engineering teams, and market-specific requirements while scaling compliance processes.

Agentic AI AI API ISO 27001 SOC 2
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callosum
1 views 2 weeks ago

Security Lead - Member of Technical Staff

Open 15d On-siteUKLead Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

Security Lead responsible for designing and assuring security across Callosum's full-stack AI orchestration platform—APIs, orchestration software, agentic systems, and physical compute—while building and leading the security team.

Agentic AI AI API Cloud
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callosum
2 views 2 weeks ago

ML Research Scientist - Member of Technical Staff

Open 15d On-siteUK Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

Callosum is seeking an ML Research Scientist to develop foundational intelligent systems by researching model architectures, learning algorithms, and efficient training methods. The role involves end-to-end research ownership, from hypothesis generation to large-scale implementation, working across a full-stack infrastructure.

Agentic AI AI Machine Learning Python PyTorch
101K – 192K £
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callosum
1 views 2 weeks ago

Research Engineer, Evals - Member of Technical Staff

Open 15d On-siteUK Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

Research Engineer building benchmarks and evaluation suites for agentic AI systems—designing rigorous measures for multi-turn, tool-using LLMs, turning traces into structured evidence, and building evaluation/observability infrastructure the whole company relies on.

Agentic AI AI LLM Machine Learning Observability
101K – 192K £
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callosum
3 views 2 weeks ago

Agent Runtime & Systems - Member of Technical Staff

Open 15d On-siteUK Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

Builds the runtime and programming model for long-running AI agents that run for weeks across distributed infrastructure, focusing on durability, observability, and secure tool execution.

AI API Api Design C++ Distributed Systems +10 skills
101K – 192K £
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callosum
1 views 2 weeks ago

ML Research Engineer - Member of Technical Staff

Open 15d On-siteUK Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

ML Research Engineer at Callosum designing experiments to understand why agentic AI systems fail, building evaluation infrastructure, and publishing findings to improve heterogeneous model/hardware orchestration.

Agentic AI AI Distributed Systems LLM Observability +1 skills
101K – 192K £
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callosum
1 views 2 weeks ago

Evolutionary Optimisation - Member of Technical Staff

Open 15d On-siteUK Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

Build and improve an LLM-guided evolutionary search system that iteratively generates, evaluates, and optimises programs across kernels, inference runtimes, and scheduling policies, working with optimisation and search algorithms at an AI infrastructure startup in London.

AI LLM Machine Learning
101K – 192K £
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callosum
2 views 2 weeks ago

Research Engineer, Benchmarking - Member of Technical Staff

Open 15d On-siteUK Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

Build and own a unified benchmarking system for evaluating agentic and algorithmic LLM solutions at Callosum's London office, using Python, sandboxed execution, and distributed systems to produce reproducible, contamination-controlled evaluation results.

Agentic AI AI LLM Machine Learning Python
101K – 192K £
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callosum
2 weeks ago

Networking & Interconnect Systems - Member of Technical Staff

Open 15d On-siteUK Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United Kingdom

Build the networking and interconnect systems that let heterogeneous AI accelerators communicate efficiently, spanning RDMA, programmable NICs, memory movement, and cluster fabric strategy at Callosum's London office.

AI Ethernet Networking
101K – 192K £
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sarvam
3 views 2 weeks ago

Agent Engineer

Open 24d On-siteAPAC
India

Build and maintain production-grade AI agents for India’s largest banks, insurers, and government departments, treating agents as engineered artifacts with versioning, evals, and regression suites.

Agentic AI AI API Cloud Conversational AI +5 skills
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AHEAD
3 views 2 weeks ago

Technical Consultant | Cloud & AI | Platform Engineering

Open 15d RemoteAPAC
India

Leads end-to-end client engagements and a small engineering pod, focusing on multi-cloud platform engineering, AI solutions, and digital transformation for enterprises. Owns scope, delivery standards, and team growth while refining company-wide playbooks.

AI Analytics Automation AWS Azure +5 skills
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O Group
4 views 2 weeks ago

Staff/Senior Staff Web3 Big Data Engineer

Open 60d APACStaff

Builds and optimizes Web3 big-data pipelines (on-chain transactions, smart-contract events) and integrates AI/LLM features like Text2SQL and anomaly detection to power analytics, risk models, and AI-driven data products.

AI API AWS ClickHouse Ethereum +18 skills
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Northbridge Recruitment
1 views 2 weeks ago

Field Solution Engineer

On-siteFull-timePrincipal

On-site Field Solution Engineer responsible for physically installing, configuring, and troubleshooting AI infrastructure (DGX/HGX/MGX nodes, switches, storage) in Australian/New Zealand data centers. Focuses on Layer 1 execution, fault diagnosis, and hardware/software integration for AI factories, bridging offshore engineering teams with on-premise operations.

AI Ansible Automation Cloud Firmware +9 skills
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Creai
2 weeks ago

Product Manager

LATAM
Mexico

Leads AI-powered product strategy from discovery to launch, aligning technical feasibility with user needs and business goals.

AI Amplitude Confluence DevOps Figma +5 skills
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PAXAFE
2 views 2 weeks ago

Senior Solutions Engineer

Open 15d RemoteNorth AmericaContractSenior H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

The Senior Solutions Engineer manages the full lifecycle of customer engagements, from pre-sales discovery and solution design to post-signature implementation and delivery. This role requires deep expertise in cold chain logistics and supply chain processes to bridge the gap between commercial commitments and technical execution.

Agentic AI AI API Azure FigJam +14 skills
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Gong.io
3 views 2 weeks ago

Senior DevSecOps Manager

Open 15d HybridMENASenior H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
Israel

The Senior DevSecOps Manager will lead a team of engineers to secure Gong's multi-cloud infrastructure, focusing on automation, identity governance, and CI/CD pipeline security. This hands-on role involves defining security roadmaps and implementing security-as-code to support a large-scale AI-driven revenue platform.

AI Automation AWS Azure Backbone.js +22 skills
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xero
2 views 2 weeks ago

Engineering Manager - Machine Learning (AI Products)

Open 15d Hybrid

The Engineering Manager will lead a team of ML and platform engineers to build and maintain production-grade AI infrastructure for Xero's financial products. The role focuses on team development, MLOps maturity, and balancing technical delivery with system health.

AI Data Engineering Generative AI JAX Machine Learning +3 skills
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Lynx Analytics
2 weeks ago

Senior Data Scientist (US)

Open 15d North AmericaSenior H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

The Senior Data Scientist will lead complex data science engagements, combining traditional statistical modeling with Generative AI and LLM techniques. The role involves hands-on development, client communication with C-level stakeholders, and technical leadership of junior team members.

Accessibility Agentic AI AI Analytics API +31 skills
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WhyBrilliant GmbH
2 views 2 weeks ago

Applied AI Engineer Intern

EuropeInternshipIntern
Germany

An internship to design, test, and integrate AI-driven threat-simulation features into a cybersecurity platform using Python, prompt engineering, and workflow automation tools.

AI Cybersecurity
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WhyBrilliant GmbH
1 views 2 weeks ago

AI Data Engineer

Europe
Germany

The AI Data Engineer will design technical data pipeline architectures and implement change management frameworks to help client organizations integrate AI. The role requires expertise in SQL, Python, and Spark, alongside strong skills in process optimization and stakeholder management.

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