101 to 125 of 130 OpenAI Jobs in London

forefront of AI innovation. They are a team of passionate innovators dedicated to pushing the boundaries of what's possible with AI, including LLM, OpenAI, Chatbots, and using Heygen avatars. Their culture thrives on creativity, collaboration, and the relentless pursuit of excellence - They are now looking for an experienced & self … Proven experience in backend architecture and scaling products Deep interest or experience in AI, demonstrated through professional work or personal projects Knowledge of LLM, OpenAI, Chatbots, Heygen avatars Ability to work independently and proactively contribute ideas Start-up experience, particularly in small, agile teams What They Offer: Fully Remote Work More ❯

forefront of AI innovation. They are a team of passionate innovators dedicated to pushing the boundaries of what's possible with AI, including LLM, OpenAI, Chatbots, and using Heygen avatars. Their culture thrives on creativity, collaboration, and the relentless pursuit of excellence - They are now looking for an experienced & self … Proven experience in backend architecture and scaling products Deep interest or experience in AI, demonstrated through professional work or personal projects Knowledge of LLM, OpenAI, Chatbots, Heygen avatars Ability to work independently and proactively contribute ideas Start-up experience, particularly in small, agile teams What They Offer: Fully Remote Work More ❯

forefront of AI innovation. They are a team of passionate innovators dedicated to pushing the boundaries of what's possible with AI, including LLM, OpenAI, Chatbots, and using Heygen avatars. Their culture thrives on creativity, collaboration, and the relentless pursuit of excellence - They are now looking for an experienced & self … Proven experience in backend architecture and scaling products Deep interest or experience in AI, demonstrated through professional work or personal projects Knowledge of LLM, OpenAI, Chatbots, Heygen avatars Ability to work independently and proactively contribute ideas Start-up experience, particularly in small, agile teams What They Offer: Fully Remote Work More ❯

forefront of AI innovation. They are a team of passionate innovators dedicated to pushing the boundaries of what's possible with AI, including LLM, OpenAI, Chatbots, and using Heygen avatars. Their culture thrives on creativity, collaboration, and the relentless pursuit of excellence - They are now looking for an experienced & self … Proven experience in backend architecture and scaling products Deep interest or experience in AI, demonstrated through professional work or personal projects Knowledge of LLM, OpenAI, Chatbots, Heygen avatars Ability to work independently and proactively contribute ideas Start-up experience, particularly in small, agile teams What They Offer: Fully Remote Work More ❯

Melveny & Myers, PwC , KKR, and many others. Strategic investors: Raised over $200 million from strategic investors including Sequoia, Google Ventures, Kleiner Perkins, and the OpenAI Startup Fund. World-class team: Harvey is hiring the best talent from DeepMind, Google Brain, Stripe, FAIR, Tesla Autopilot, Glean, Superhuman, Figma, and more. Partnerships … Our engineers and researchers work directly with OpenAI to build the future of generative AI and redefine professional services. Performance: 4x ARR in 2024. Competitive compensation. Role Overview As a User Operations Specialist, you will be the frontline support within the User Operations team, reporting to the Head of User More ❯

PostgreSQL (with Sequelize ORM) Cloud Infrastructure: AWS (Cognito, RDS, S3, Lambda, EventBridge, SES) Deployment: Vercel, GitHub Actions (CI/CD) Testing: Playwright AI Integration: OpenAI APIs (used in FinProm compliance tooling) and Prompt Layer What You’ll Do Lead development of key features and product improvements Write clean, efficient code … expertise with Node.js and API development Experience working with PostgreSQL and ORMs (ideally Sequelize) Experience with Vercel and GitHub-based deployment workflows Familiarity with OpenAI integrations or other ML/AI applications Solid AWS knowledge - especially Lambda, Cognito, and serverless architecture Understanding of authentication and authorisation principles Track record with More ❯

PostgreSQL (with Sequelize ORM) Cloud Infrastructure: AWS (Cognito, RDS, S3, Lambda, EventBridge, SES) Deployment: Vercel, GitHub Actions (CI/CD) Testing: Playwright AI Integration: OpenAI APIs (used in FinProm compliance tooling) and Prompt Layer What You’ll Do Lead development of key features and product improvements Write clean, efficient code … expertise with Node.js and API development Experience working with PostgreSQL and ORMs (ideally Sequelize) Experience with Vercel and GitHub-based deployment workflows Familiarity with OpenAI integrations or other ML/AI applications Solid AWS knowledge - especially Lambda, Cognito, and serverless architecture Understanding of authentication and authorisation principles Track record with More ❯

through deeper personalisation, creating a smarter & more engaging experience, recommending the right content and features to make users love Cleo Integrating LLMs hosted by OpenAI, Anthropic, GCP, AWS Working cross-functionally with backend engineers, data analysts, UX writers, product managers, and others to ship features that improve our users' financial … parental leave 1 month paid sabbatical after 4 years at Cleo Regular socials and activities, online and in-person We'll pay for your OpenAI subscription Online mental health support via Spill Workplace Nursery Scheme And many more! We strongly encourage applications from people of colour, the LGBTQ+ community, people More ❯

through deeper personalisation, creating a smarter & more engaging experience, recommending the right content and features to make users love Cleo. Integrating LLMs hosted by OpenAI, Anthropic, GCP, AWS. Working cross-functionally with backend engineers, data analysts, UX writers, product managers, and others to ship features that improve our users' financial … parental leave. 1 month paid sabbatical after 4 years at Cleo. Regular socials and activities, online and in-person. We'll pay for your OpenAI subscription. Online mental health support via Spill. Workplace Nursery Scheme. And many more! We strongly encourage applications from people of colour, the LGBTQ+ community, people More ❯

LLMs) . This role demands hands-on experience in prompt engineering , designing intelligent conversational flows, managing context windows, and interfacing with APIs such as OpenAI’s Chat Completions API . The ideal candidate should be capable of designing, evaluating, and optimizing AI systems that generate high-quality, context-aware responses. … and meta-prompting techniques. Design and refine targeted prompts to drive intelligent behavior in AI chatbots. Write Python functions to interface with APIs, especially OpenAI’s Chat Completions API and similar LLM platforms. Manage token economy and conversational context for long, multi-turn dialogues. Architect sequential, step-by-step task … correctness. Required Qualifications: Proven experience with Python and NLP libraries such as NLTK , SpaCy , TextBlob , or similar. Hands-on experience working with LLMs (e.g., OpenAI, Claude, Mistral, etc.) . Deep understanding of prompt engineering strategies and conversational AI workflows. Experience building and consuming RESTful APIs. Strong grasp of tokenization , embedding More ❯

LLMs) . This role demands hands-on experience in prompt engineering , designing intelligent conversational flows, managing context windows, and interfacing with APIs such as OpenAI’s Chat Completions API . The ideal candidate should be capable of designing, evaluating, and optimizing AI systems that generate high-quality, context-aware responses. … and meta-prompting techniques. Design and refine targeted prompts to drive intelligent behavior in AI chatbots. Write Python functions to interface with APIs, especially OpenAI’s Chat Completions API and similar LLM platforms. Manage token economy and conversational context for long, multi-turn dialogues. Architect sequential, step-by-step task … correctness. Required Qualifications: Proven experience with Python and NLP libraries such as NLTK , SpaCy , TextBlob , or similar. Hands-on experience working with LLMs (e.g., OpenAI, Claude, Mistral, etc.) . Deep understanding of prompt engineering strategies and conversational AI workflows. Experience building and consuming RESTful APIs. Strong grasp of tokenization , embedding More ❯

Melveny & Myers, PwC , KKR, and many others. Strategic investors: Raised over $200 million from strategic investors including Sequoia, Google Ventures, Kleiner Perkins, and the OpenAI Startup Fund. World-class team: Harvey is hiring the best talent from DeepMind, Google Brain, Stripe, FAIR, Tesla Autopilot, Glean, Superhuman, Figma, and more. Partnerships … Our engineers and researchers work directly with OpenAI to build the future of generative AI and redefine professional services. Performance: 4x ARR in 2024. Competitive compensation. Role Overview The Senior Solutions Architect at Harvey.ai is a critical role that bridges the gap between our product team and client-facing teams. More ❯

products at the moment - MagicNotes and Beamforce. One is already leveraging AI extensively - we are one of the first EU companies to be using OpenAI in their EU cluster - and the other we are looking to level up and bring into the future with AI to help our services team … infrastructure, backend and frontend technology stacks: We use the latest Ruby on Rails, Turbo, Phlex, AlpineJS, TailwindCSS, AWS, PostgresSQL to name a few technologies. OpenAI & Claude for LLM interfacing. We are not wedded to them and will rapidly evolve over the next 3-6 months with the right technologies. Has More ❯

About the Team The Post-Training Team is dedicated to optimising AI systems to achieve state-of-the-art performance across the various risk domains that AISI focuses on. This is accomplished through a combination of scaffolding, prompting, supervised and More ❯

The AI Security Institute is the largest team in a government dedicated to understanding AI capabilities and risks in the world. Our mission is to equip governments with an empirical understanding of the safety of advanced AI systems. We conduct More ❯

The AI Security Institute is the largest team in a government dedicated to understanding AI capabilities and risks in the world. Our mission is to equip governments with an empirical understanding of the safety of advanced AI systems. We conduct More ❯

About us At Sierra, we're building a platform to enable every company in the world to build their own autonomous AI agents for everything from customer service to commerce. We are primarily an in-person company based in San More ❯

products at the moment - MagicNotes and Beamforce. One is already leveraging AI extensively - we are one of the first EU companies to be using OpenAI in their EU cluster - and the other we are looking to level up and bring into the future with AI to help our services team … technologies. We're building a cutting-edge AI product, with big ambitions, so if you love to learn and get stuck into working with OpenAI & Claude for LLM interfacing, then look no further. You care about the “right tool for the right job” and pick the pragmatic options when building More ❯

products at the moment - MagicNotes and Beamforce. One is already leveraging AI extensively - we are one of the first EU companies to be using OpenAI in their EU cluster - and the other we are looking to level up and bring into the future with AI to help our services team … technologies. We're building a cutting-edge AI product, with big ambitions, so if you love to learn and get stuck into working with OpenAI & Claude for LLM interfacing, then look no further. You care about the “right tool for the right job” and pick the pragmatic options when building More ❯

products at the moment - MagicNotes and Beamforce. One is already leveraging AI extensively - we are one of the first EU companies to be using OpenAI in their EU cluster - and the other we are looking to level up and bring into the future with AI to help our services team … infrastructure, backend and frontend technology stacks We use the latest Ruby on Rails, Turbo, Phlex, AlpineJS, TailwindCSS, AWS, PostgresSQL to name a few technologies. OpenAI & Claude for LLM interfacing We are not wedded to them and will rapidly evolve over the next 3-6 months with the right technologies Has More ❯

products at the moment - MagicNotes and Beamforce. One is already leveraging AI extensively - we are one of the first EU companies to be using OpenAI in their EU cluster - and the other we are looking to level up and bring into the future with AI to help our services team … infrastructure, backend and frontend technology stacks We use the latest Ruby on Rails, Turbo, Phlex, AlpineJS, TailwindCSS, AWS, PostgresSQL to name a few technologies. OpenAI & Claude for LLM interfacing We are not wedded to them and will rapidly evolve over the next 3-6 months with the right technologies Has More ❯

Contract - Multi-Modal AI Specialist (OpenAI CLIP) | Up to £650/day | Outside IR35 | Hybrid/Remote We're working with a leading global agency supporting a major financial services client on an innovative AI initiative. The project aims to predict the performance of creative campaigns before they go live … images, video, and text) and customer research. This is a hands-on contract role for a technically strong machine learning specialist with experience applying OpenAI CLIP . Using historical data, you'll use open-source models to assess campaign creative and help deliver insights at both content and audience levels. … Key responsibilities: Apply OpenAI CLIP or similar models to campaign imagery, video content, and customer research (e.g., surveys) Build models that simulate campaign performance using historical data (backtesting) Pre-test creative content, score ad copy, and identify attributes driving success Work with customer data (NLP) and translate insights into model More ❯

Contract - Multi-Modal AI Specialist (OpenAI CLIP) | Up to £650/day | Outside IR35 | Hybrid/Remote We're working with a leading global agency supporting a major financial services client on an innovative AI initiative. The project aims to predict the performance of creative campaigns before they go live … images, video, and text) and customer research. This is a hands-on contract role for a technically strong machine learning specialist with experience applying OpenAI CLIP . Using historical data, you'll use open-source models to assess campaign creative and help deliver insights at both content and audience levels. … Key responsibilities: Apply OpenAI CLIP or similar models to campaign imagery, video content, and customer research (e.g., surveys) Build models that simulate campaign performance using historical data (backtesting) Pre-test creative content, score ad copy, and identify attributes driving success Work with customer data (NLP) and translate insights into model More ❯

About Ankar Innovation is the key to solving society's greatest challenges, and IP (intellectual property) plays a pivotal role in encouraging, driving, and capitalising on innovation. At Ankar AI, our mission is to empower IP and R&D teams More ❯

About us At Sierra, we're building a platform to enable every company in the world to build their own autonomous AI agents for everything from customer service to commerce. We are primarily an in-person company based in San More ❯