Latest Open Source Jobs

Staff Software Engineer – Identity and Access, Identity Squads | UK |

This role involves leading the technical direction of Grafana's authentication systems, focusing on redesigning edge authentication at scale. You'll work with modern identity protocols like OAuth 2.1, OIDC, SAML, and SCIM across distributed systems, primarily using Golang. The position emphasizes technical leadership, mentoring senior engineers, and driving cross-team alignment on security and performance-critical infrastructure used by millions of users daily.

Grafana Labs United Kingdom £100,000 – £124,000 pa

Remote Permanent

Staff AI Engineer - 2nd Horizon | UK |

Design and build AI-powered features that help users make sense of large, complex datasets through observability and analytics. Work on LLM-driven workflows and agentic systems in a fast-paced skunkworks environment, focusing on rapid prototyping, user validation, and scalable solutions. Collaborate across engineering and data teams while owning end-to-end development of production-grade tools.

Grafana Labs United Kingdom £100,000 – £124,000 pa

Remote Permanent

Senior Software Engineer, AI Inference Systems

Develop and optimize high-performance AI inference systems for large-scale models on NVIDIA GPUs. Work on inference frameworks like vLLM, optimize GPU kernels and compilers, design benchmarking methodologies, and contribute to MLPerf submissions. Collaborate across teams to improve performance in multi-GPU, multi-node, and cloud environments, with opportunities to conduct and publish research in ML systems.

NVIDIA PLN 292,500 – PLN 650,000 pa

Remote Permanent

Senior Software Engineer, AI Inference Systems

Design and optimize high-performance AI inference systems for large-scale models using NVIDIA's latest GPU hardware. Develop and benchmark GPU kernels, improve inference frameworks like vLLM, and contribute to compiler infrastructure and distributed scheduling. Work at the intersection of systems, performance, and machine learning to push the boundaries of accelerated computing.

NVIDIA PLN 292,500 – PLN 650,000 pa

Remote Permanent

Senior Software Developer: Models Team (Token Factory)

This role involves onboarding and optimizing state-of-the-art open-source AI models for production-scale inference on Nebius' Token Factory platform. The developer will work on high-performance distributed systems, focusing on model serving efficiency, autoscaling, and systems optimization using frameworks like vLLM and TRT-LLM. The team emphasizes automation, observability, and close collaboration with hardware and cloud infrastructure teams to deliver reliable, low-latency AI inference.

Nebius United Kingdom

Software Team Lead - eDV Cleared

Lead the design and development of scalable software solutions for national security clients, both in the cloud and on-premise. Act as a lead technologist, shaping product direction and translating user requirements into technical roadmaps while mentoring development teams and engaging with key stakeholders.

Searchability NS&D London, United Kingdom £60,000 – £100,000 pa

On-site Permanent Clearance Required

Senior Software Engineer (Data Platform, C++)

Design and implement core functionality in a distributed data platform using C++, focusing on scalability, reliability, and performance. Work across storage, compute, and analytics systems to build platform-level features and improve end-to-end user experience for internal and external products.

Nebius United Kingdom

Senior Cloud Architect

This role involves shaping enterprise-scale data and AI architectures on Google Cloud, providing technical leadership across pre- and post-sales engagements. You'll design cloud-native solutions, mentor teams, and collaborate with Google Cloud and other partners to deliver innovative, production-grade platforms. The position blends strategic architecture, customer advisory, and hands-on innovation in a dynamic, agile environment.

Experis London, United Kingdom £100,000 – £130,000 pa

Lead Developer Advocate, SQL & Analytics Workloads

Lead Developer Advocate for SQL and Analytics Workloads at Snowflake in London. Drive developer advocacy strategy, create technical content and reference implementations, and represent the developer voice internally. Evangelize Snowflake across EMEA through conferences, community engagement, and technical enablement. Bridge product teams and the global developer community to accelerate adoption of Snowflake for SQL, data modeling, analytics engineering, and modern data stack workflows.

Snowflake London, United Kingdom

Hybrid Permanent

Sr. Software Engineer, Cloud Detection , London)

Design and scale foundational backend services for a next-generation detection platform processing internet-scale data streams. Work on distributed systems using Go/C++ and cloud technologies to enable real-time threat detection across Falcon products. Collaborate across teams to improve platform performance, resilience, and architecture in a high-autonomy environment.

CrowdStrike London, United Kingdom

Hybrid Permanent Clearance Required

Senior Specialist Field Engineer - Networking

This role involves serving as the primary technical contact for customers using CoreWeave's AI-optimized cloud infrastructure, with a strong focus on networking within high-performance computing and Kubernetes environments. The engineer will lead proof-of-concept deployments, optimize customer workloads, and contribute to product development by providing field insights. It combines hands-on technical delivery with strategic input into networking architecture and performance optimization for AI workloads.

CoreWeave London, United Kingdom

Hybrid Permanent

Specialised AI Engineer

This role involves designing and optimising scalable AI systems for large-scale training, post-training, and low-latency inference on a vertically integrated GenAI cloud platform. The engineer will tackle hard systems problems at the intersection of performance, efficiency, and developer experience, working across distributed systems, model optimisation techniques, and developer tooling. Collaboration with research, infrastructure, and product teams is key to shaping platform components based on real-world AI demands.

NScale London, United Kingdom

On-site Permanent

Senior Cloud Native Security Architect

This role involves leading complex cloud-native security engagements with customers, designing and implementing solutions in Kubernetes, cloud platforms, and identity environments. The architect acts as a trusted advisor, bridging technical and business needs across security, operations, and engineering teams, while also mentoring peers and contributing to product feedback. Work focuses on pragmatic, high-impact outcomes in ambiguous, high-pressure scenarios using modern cloud technologies and security frameworks.

Palo Alto Networks United Kingdom

Remote Permanent

Senior Infrastructure Engineer (OpenStack Ironic Specialist)

Design and operate scalable bare metal provisioning platforms using OpenStack Ironic, managing the full lifecycle of GPU and high-performance servers. Automate hardware onboarding, firmware configuration, and deployment workflows while ensuring reliability and integration with OpenStack services. Serve as an escalation point for complex provisioning issues and contribute to upstream OpenStack communities.

NScale United Kingdom

Remote Permanent

Forward-Deployed Engineer

This role involves embedding with strategic enterprise customers to lead frontend modernization, Next.js migrations, and production AI integrations. You'll architect high-performance applications, conduct code audits, optimize Core Web Vitals, and build agentic workflows using Vercel’s AI SDK. The position blends hands-on development, technical leadership, and customer collaboration to drive transformational outcomes in complex environments.

Vercel United Kingdom