1 to 25 of 29 Permanent Open Source Jobs in the City of London

that support critical research and trading workloads. This role offers the opportunity to work on innovative, high-impact projects at the intersection of cloud, open-source, and high-performance computing. The Role: Design and develop scalable data orchestration services across cloud and on-prem environments. Create unified platform … abstractions to streamline data access across diverse storage technologies. Integrate open-source and vendor storage solutions through rapid prototyping and engineering. Optimise storage performance and efficiency across large-scale infrastructure. Collaborate across engineering functions to deliver robust end-to-end platform capabilities. Own operational responsibilities: troubleshooting, performance tuning ...

Maze is partnering with a stealth-mode startup that's rebuilding core banking from the ground up. They’re creating the world’s first open-source, AI-native "Thin Ledger" —set to replace legacy infrastructure at Tier 1 banks. We're looking for a Senior Engineer specialising … five-nines reliability Contribute to backend, DevOps, and CI/CD decision-making Embed AI into engineering workflows & ops Self-motivated, problem-solving mindset; open to non-traditional backgrounds. You should have: Expert backend skill ideally in Golang, or Rust, Zig or C. Deep expereince building distributed systems from ...

supported in pushing the envelope alongside top pioneers in verification. Responsibilities Design and maintain robust testbenches and targeted tests using the organisation’s mixed open-source and proprietary verification environment. Develop and own comprehensive verification plans, ensuring coverage goals and test strategies are clear and defensible. Identify … resolve design defects efficiently. Oversee and refine the test infrastructure, including management of test suites, CI pipelines, and the improvement of both internal and open-source tooling. Requirements Strong debugging and analytical capability, able to isolate and resolve complex RTL and testbench issues efficiently. At least two years ...

that scale across thousands of nodes • Performance-critical modules for consensus, networking, and data pipelines • Internal tooling for observability, testing, and simulation • Contributions to open-source infra and protocol-level primitives What You Bring • 5+ years of backend engineering experience in systems-level environments • Deep knowledge of distributed … cloud-native infra • Familiarity with blockchain, cryptographic protocols, or decentralized coordination Bonus Points • Experience in zero-knowledge systems, MPC, or verifiable computation • Contributions to open-source infra projects • Prior work in Layer 1 or Layer 2 blockchain development Why Join • Stealth-stage impact with protocol-grade ownership • Competitive ...

Threat Intelligence Specialist to help build out their CTI capability from the UK. You will be leading in the collection, analysis and investigation of open-source intelligence covering security threats, vulnerabilities and malware samples. This is an excellent opportunity for a Cyber Threat Intelligence Specialist to work directly … best in class threat intelligence capability, whilst interacting and collaborating with other industry experts in knowledge sharing groups and initiatives. Key Responsibilities Perform open source intelligence gathering and analysis, identifying indications of cyber threats, malicious code and other vulnerabilities. Produce reports on cyber threats, attacks and incidents ...

reactive programming (e.g., Reactor, Coroutines) Domain-Driven Design (DDD) exposure Experience in data streaming technologies (Kafka, Pulsar, etc.) Interest in contributing to internal IP, open-source work, or technical communities What We Offer Competitive salary + bonus Flexible working arrangements Private health, pension, and generous holiday allowance Opportunities ...

platforms (AWS, GCP, Azure) and infrastructure-as-code tools such as Terraform. Background in data visualization or AI-driven UX design . Contributions to open-source projects or active participation in tech communities. Experience leading distributed teams in agile environments . What we offer A High-Impact Environment ...

experience with Python, modern development techniques, and design patterns. Experience in data science tools and ML tools (e.g., NumPy, pandas, scikit-learn, PyTorch) and open-source contributions (especially Python-based) would be a bonus. Familiarity with CUDA, GPU-based computations, end-to-end neural network training, MLOps ...

term security hardening practices You appreciate building systems with good engineering practices and may have a background in software engineering at scale You're open to being a part of an on-call rota, ready to respond if we have a severe, platform-impacting security tooling failure or need … private Data Centers Kubernetes, Helm, Flux Distributed systems, mostly Golang based with CockroachDB and NATS SIEM/SOAR, EDR, CNAPP, and a suite of open source tools with custom integrations This is a fully remote role, please email your CV to apply ...

HCLTech’s global Centre of Excellence guiding advanced‐tech adoption for the world’s largest enterprises—combining strategic advice with accelerated engineering and open‐source leadership (CNCF). ...

your time. 1. Application: Submit your CV and a cover letter to careers@phixflow.com explaining your relevant experience, both from paid work or other open-source projects you are involved with. 2. Online Assessment: Successful applicants will be invited to complete a short intellectual challenge (logic test) designed ...

software engineering skills with a focus velocity Excellent communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely ...

Experience building pipelines for scientific or healthcare data Knowledge of cluster compute, distributed training and GPUs Understanding of healthcare data or regulated environments Open-source contributions Cloud experience (AWS/GCP/Azure) Compensation & Benefits Excellent base salary Generous equity allocation from day one Comprehensive health & wellness package ...

optimization affects performance Next-generation simulation and HPC compute pipelines, supporting ML/AI workflows at scale. Integration and continuous improvement of internal and open-source tools for automation and reliability. Strategic platform direction: shaping foundational systems for critical infrastructure in an elite trading environment. Team and Culture ...

expertise : Understanding of adversarial AI, prompt injection, or system security • Real-time systems experience : Trading systems, fraud detection, or other low-latency critical infrastructure • Open source contributions in relevant domains (AI frameworks, monitoring tools, security infrastructure) Bonus Points (Nice to Have) • Understanding of regulatory frameworks ...

ambiguous problem statements. Our client problems can range in a variety of domains. Some examples, but not limited to, are building a RAG leveraging open source or commercial LLMs, building a Multiagent system, leveraging Small Language models that could be locally resident, problems in computer vision, speech, Natural … Work across multiple domains What are the benefits of being at Sahaj? Unlimited holiday allowance Life insurance & private health insurance Stock options No hierarchy Open Salaries ...

team from the ground up. Key Skills/Experience: Experience with LLMs, generative AI models, and RAG pipelines. Frameworks: OpenAI, Anthropic Claude, Gemini, and open-source models Agentic AI, Langgraph, Crew AI, Autogen Python Development (Hands-on coding) Must have deployed AI applications on cloud. (Azure/ ...

solving ambiguous and complex challenges. Experience working on software infrastructure or building Cloud native software using Kubernetes. Understanding of systems design and Open Source components. If you have knowledge of building virtual machines - Virtual servers, virtual networking or network programming - that's a plus... but definitely not needed ...

transform data for analytics and reporting. Develop ETL/ELT workflows to move data efficiently into data warehouses, data lakes and lake houses using open-source and AWS tooling. Apply DevOps practices, including CI/CD, infrastructure as code and automation, to improve and streamline data engineering processes. ...

. Proven productization of deep nets (latency/throughput constraints, telemetry, on‐device optimization). Publications at ICLR/ICML/NeurIPS or equivalent open‐source contributions. Familiarity with OpenVLA, Physical Intelligence (π) models, or similar open VLA frameworks. What We Offer: Competitive salary plus participation ...

operating systems including Windows, Linux, iOS, and Android. Enhance, maintain, and expand existing codebases (C/C Python). Integrate third-party commercial and open-source software components. Produce clear and well-structured technical documentation, including specifications, APIs, and integration guides. Support external partners and customers in integrating ...

preferences. Collaborate with researchers, engineers, and human feedback teams to build scalable alignment pipelines. Publish findings in top-tier AI conferences and contribute to open-source frameworks. Key Requirements: PhD in Computer Science, Machine Learning, or related field. Publications at NeurIPS, ICML, ICLR, ACL, or related venues. Deep ...

Background supporting B2B or enterprise clients with structured CS playbooks and QBRs. Exposure to computer vision, data science, or related technical concepts. Experience with open-source ecosystems or engaging with users via community forums or GitHub. Comfort using spreadsheets or basic analytics for churn analysis and portfolio insights. … improvement. Strive for excellence: Perseverance and attention to detail. Actions, not words: Focus on delivering meaningful results. Act with urgency: Seize fleeting opportunities. Open access to all: Transparent communication and collaboration. Learn more in our Ultralytics Handbook. 💰 Compensation and benefits We reward excellence and impact — not just tenure ...

enterprise vendors and fast-scaling startups. Willingness to travel internationally for partner meetings, on-site integrations, and industry events. Nice to Have Experience in open-source ecosystems or developer platforms, ideally with YOLO familiarity via our models and docs. Existing network across AI hardware, cloud, and edge communities … improvement. - Strive for excellence: Perseverance and attention to detail. - Actions, not words: Focus on delivering meaningful results. - Act with urgency: Seize fleeting opportunities. - Open access to all: Transparent communication and collaboration. Learn more in our Ultralytics Handbook. 💰 Compensation and benefits We reward excellence and impact — not just tenure ...

latency, high-throughput trading infrastructure where optimization directly drives performance. HPC and simulation platforms supporting large-scale ML and AI pipelines. Integration of open-source and custom tools to enhance automation, reliability, and visibility. Strategic infrastructure initiatives shaping the next generation of compute systems. Team & Culture Tight-knit ...