276 to 300 of 871 Open Source Jobs in London

GenAI Full-Stack Engineer

Location
Greater London, England, United Kingdom
degree in Computer Science, Engineering, or a related field, or equivalent practical experience. Desirable Experience with financial services or other regulated industries. Contributions to open-source projects. Experience with MLOps and the deployment of machine learning models. What we’ll provide you This is a unique role that ...

AI Native SW Eng

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent
strategy, vector search, context window engineering and tuning against real quality targets Integrate and abstract across multiple LLM providers OpenAI, Anthropic, Vertex AI, and open-source models with fallback routing, token, cost, and latency management ImplementLLMOpsin production: eval harnesses with real quality metrics, prompt versioning, observability tooling (LangSmith ...

AI Native SW Engineering

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent
multi-LLM integration standards: vendor-agnostic architecture by default, fallbackroutingand cost governance as standard design practice across providers including OpenAI, Anthropic, Vertex AI, and open-source models OwnLLMOpsatprogrammescale: eval strategy, prompt governance, observability tooling standards, safetymonitoringand cost controls across multiple concurrent systems Lead client engineering engagements at senior ...

Senior/Staff Software Engineer, Backend

Location
Greater London, England, United Kingdom
silos. What you see in the editor is what ships in production. Companies like Spotify, Duolingo, LinkedIn, Google, and Fortune 500 automakers use our open-source runtimes to build once and ship everywhere — websites, apps, games, and vehicles. We’re looking for a Senior Software Engineer to join ...

Full Stack AI Engineer

Hiring Organisation
Ryan, LLC
Location
London, UK
Employment Type
Full-time
with approximately 0-3 years of professional software engineering experience. Strong foundation in software engineering, demonstrated through professional work, internships, university projects, personal projects, open-source contributions, hackathons, or equivalent technical experience. Evidence of interest in and hands-on exploration of generative AI, large language models, or agentic ...

Applied AI Engineer, Global Public Sector

Hiring Organisation
Scale AI
Location
London, UK
Employment Type
Full-time
define AI-driven solutions Build and deploy end-to-end AI applications into production leveraging latest developments from the biggest AI labs, and open source modelsCollaborate with cross-functional teams, including data annotation specialists, to create high-quality training datasetsDesign and maintain robust evaluation frameworks to ensure ...

NatSec Cloud Engineer

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Natsec Cloud Engineer who has demonstrable experience of automating the software delivery pipeline within a highly scalable system that relies heavily on open source technologies. We thrive on solving complex challenges through creative thinking and the latest tools and tech. Our culture is inclusive, modern, friendly and innovative. ...

Machine Learning Engineer

Hiring Organisation
Trainline
Location
London, UK
Employment Type
Full-time
love to hear from you if you...Have an advanced degree in Computer Science, Mathematics, Statistics or a similar quantitative disciplineAre proficient with Python, including open-source data libraries (e.g Pandas, Numpy, Scikit learn etc.)Have experience productionising machine learning models and/or AI solutionsAre an expert ...

Senior Infrastructure Engineer

Location
Greater London, England, United Kingdom
ready platform tooling using Python or Golang. Deep understanding of container and orchestration internals (e.g., Kubernetes, Docker). Hands-on experience extending and integrating open-source tools like Prometheus, OpenTelemetry, and Grafana. Proven ability to package and scale developer-facing infrastructure utilities with a focus on improving system ...

Software Engineer III - Cloud Data Platform (AWS/Databricks, Terraform)

Hiring Organisation
JP Morgan Chase
Location
London, UK
Employment Type
Full-time
/outputs, and adherence to resiliency and security expectationsPreferred qualifications, capabilities, and skillsExperience with data lakehouse architectures using Delta Lake, Apache Spark, or similar open-source frameworksFamiliarity with AWS-native data services such as Glue, Lake Formation, Redshift, or AthenaExposure to data governance practices including cataloging, lineage tracking ...

Principle Data Warehouse Engineer (Executive Director)

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
deliver impactful data solutions Experience evaluating, selecting, and integrating emerging data technologies and tools to improve scalability, security, and performance Published contributions to open-source projects, technical blogs, or industry forums related to data engineering Advanced degree in Computer Science, Engineering, Mathematics, or a related field Recognized ...

Data Scientist

Location
Greater London, England, United Kingdom
completion. Experiment with model, prompt, retrieval, and agent configuration strategies to identify approaches that deliver the best customer and business outcomes. Evaluate commercial and open-source models and recommend appropriate approaches based on quality, latency, scalability, and cost. Generative AI & RAG Design, develop, and optimize Retrieval-Augmented Generation ...

Senior DevOps Engineer

Location
Greater London, England, United Kingdom
aspects. Familiarity with cloud cost optimization/FinOps practices for cloud and Kubernetes workloads. Experience contributing to multi-org infrastructure unification efforts. Contributions to open-source infrastructure or platform engineering projects, especially in the CNCF ecosystem. Why Deliveroo Our mission is to transform the way you shop ...

Senior Machine Learning Engineer

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
explainable, and human-in-the-loop decision-support tools for intelligence and operational users. Requirements Edge Model Optimization & Deployment: Quantize, fine-tune, and optimize open-source SLMs (e.g., Gemma 3, Llama 3) and vision-language models for execution on low-power edge runtimes (LiteRT/TensorFlow Lite, ONNX ...

Senior Engineer (Full-Stack)

Location
City Of London, England, United Kingdom
ability and innovative problem solving skills.Software Design Patterns.Source control (Git).Desired:OOP \\ SOLID Principles.Demonstrable experience of C# (.Net 8+) in a professional environment.Contribution to open-source projects.Experience of regulatory driven projects.Knowledge of Financial Markets, Systems and Over the Counter (OTC) products.The Fusion Platform Team Builds, Owns and Runs ...

Senior Python Engineer: AI Agents & Forecasting

Location
Greater London, England, United Kingdom
experience including random forests, regression models, scikit-learn, and PyTorch AWS infrastructure experience deploying containerised applications and managing cloud environments (EC2, Lambda, RDS) Open-source contributions to AI or crypto projects Compensation Salary: £80,000 to £120,000 depending on experience Equity: Competitive for the right candidate Hours ...

Cloud Advisory Architect

Location
Greater London, England, United Kingdom
apart: Engineering/Development : Demonstrated experience working close to engineering and teams, ensuring realistic delivery expectations. Developer Repo Contributions : Showcase during interview personal or open-source work, prototypes, accelerators, or reference architectures so that during interview the repo artefacts can be used explain their decisions through architecture diagrams ...

Remote Ada CS Engineer

Location
Hillingdon, West London, United Kingdom
This role is a chance for significantly more independence and autonomy than typical for this level of experience. The work you will do is open source and can be found on Github at . You will be working to improve and develop resources and experiences for teachers ...

Full Stack AI Engineer

Location
Greater London, England, United Kingdom
with approximately 0-3 years of professional software engineering experience. Strong foundation in software engineering, demonstrated through professional work, internships, university projects, personal projects, open-source contributions, hackathons, or equivalent technical experience. Evidence of interest in and hands‐on exploration of generative AI, large language models, or agentic ...

Sr. Software Engineer, Cloud Detection (Hybrid, London)

Location
Greater London, England, United Kingdom
Proven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency and drive business outcomes. Bonus Points: Contributions to the open-source community (GitHub, Stack Overflow, blogging) Existing exposure to Go or C++, Scala, AWS, Cassandra, Kafka, Elasticsearch... Prior experience in the cybersecurity ...

Global Banking & Markets - Systems Engineer - Vice President - London London · United Kingdom · Vice President

Location
Greater London, England, United Kingdom
ability to provide liquidity and execution services for institutional clients around the world, which are important revenue drivers for the firm. We use open-source industry-standard, and internal proprietary technologies to build cutting-edge platforms for pricing, execution, and control across millions of transactions. The Futures Mission ...

AI Delivery Tech Lead (CL8)

Hiring Organisation
Accenture
Location
London, UK
Employment Type
Full-time
agile, collaborative, fast-moving consulting environments Experience in Telco or Financial Services Set yourself apart Certifications in AWS, GCP, Azure or Anthropic AI platforms Open-source contributions to agentic or LLM tooling Contact centre platform experience (e.g. Genesys, Sierra, Decagon, Parloa, PolyAI, NICE Cognigy, Agentforce Contact Centre ...

AI Delivery Tech Lead (CL8)

Location
Greater London, England, United Kingdom
agile, collaborative, fast‐moving consulting environments Experience in Telco or Financial Services Set yourself apart Certifications in AWS, GCP, Azure or Anthropic AI platforms Open‐source contributions to agentic or LLM tooling Contact centre platform experience (e.g. Genesys, Sierra, Decagon, Parloa, PolyAI, NICE Cognigy, Agentforce Contact Centre ...

AI Delivery Tech Lead, Song Service

Location
Greater London, England, United Kingdom
professional services Comfortable leading within agile, collaborative, fast‐moving consulting environments Set yourself apart Certifications in AWS, GCP, Azure or Anthropic AI platforms Open‐source contributions to agentic or LLM tooling Contact centre platform experience (e.g. Genesys, Sierra, Decagon, Parloa, PolyAI, NICE Cognigy, Agentforce Contact Centre and Amazon ...

Rapid Application Engineer London ·

Location
Greater London, England, United Kingdom
standards. Performance analysis: Experience with profiling, optimization, or working on latency-sensitive code. QuestDB or Dolt: Time-series or version-controlled database experience. Open-source contributions, side projects, or competitive programming : Evidence that you pursue engineering challenges outside of work and enjoy problem-solving for its own sake. ...