Python Jobs

Mistral AI

Mistral AI is seeking an Applied AI Engineer focused on DevOps to help customers adopt its products and solve complex technical challenges. In this role, you will apply your problem-solving abilities, creativity, and technical skills to assist organizations in leveraging AI for significant impact. You will gain unique insights and contribute to critical global industries and institutions. Applied AI Engineers at Mistral AI work in small teams, owning end-to-end execution of high-stakes projects, which may involve discussing architecture, managing large-scale data, coding custom applications, engaging with customer executives, and strategizing for the Applied Engineering team.

Mistral AI

Mistral AI is seeking Applied Scientists and Research Engineers to drive innovative research and collaborate with clients on complex research projects. You will develop state-of-the-art models across different modalities such as text, image, and speech. By developing novel methods and research ideas, you will apply these models across a diverse set of use cases and domains. Working cross-functionally with both external and internal science, engineering, and product teams, you will deliver high-impact AI solutions that make a significant difference. We are a dynamic, collaborative team passionate about AI and its potential to transform society, with a diverse workforce thriving in competitive environments and committed to driving innovation.

As an Applied Machine Learning Engineer, you will serve as a vital bridge between cutting-edge AI research and practical, real-world applications. Your work will focus on developing, fine-tuning, and operationalizing machine learning models that drive business value and enhance user experiences. This is a hands-on engineering role that combines deep technical expertise with a strong customer focus to deliver scalable AI solutions.

Mistral AI

Mistral AI is seeking Applied Scientists Interns and Research Engineers Interns to drive innovative research and collaborate with clients on complex research projects. You will develop state-of-the-art models across different modalities such as text, image, and speech. By developing novel methods and research ideas, you will apply these models across a diverse set of use cases and domains. Working cross-functionally with both external and internal science, engineering, and product teams, you will deliver high-impact AI solutions that turn the needle. This position is open for our local offices in Paris and London.

Inworld is seeking an ambitious and capable Staff/Principal Backend Engineer to join their team and contribute to the advancement of the Inworld AI platform. This role will involve working on exciting new products, including the Inworld Router, an intelligent routing layer for LLMs, and API-based model services for TTS/STT. You will tackle complex infrastructural projects, focusing on platformization, development tools, and system-wide billing. The position emphasizes rapid iteration, building novel platform capabilities, and optimizing for real-time performance in consumer AI applications. Collaboration with ML teams is integral to the role, as AI and ML are critical to the platform's vision.

Inworld is seeking an ambitious and capable Staff/Principal Backend Engineer to join their research lab and contribute to the advancement of their AI platform. This role will focus on developing and scaling core systems for exciting new products, including an intelligent routing layer (Inworld Router) that supports over 200 LLMs, real-time API services, and API-based model services like TTS/STT with voice cloning. The position involves tackling complex infrastructural projects, platformization, and system-wide billing, with a strong emphasis on collaboration with ML teams to drive learning and adaptability. This is an individual contributor role focused on direct technical contribution.

$280k - $350k

OpenAI

Online Data builds and operates Habitat, a core online database platform for OpenAI's products. This system handles high-QPS, latency-sensitive workloads across regions, with end-to-end ownership of provisioning, developer experience, APIs, scaling, reliability, data movement, privacy enforcement, and future storage backends. The role involves designing and building core abstractions, owning major surface areas, improving performance and cost efficiency, and building developer-first tooling. You will collaborate closely with internal teams, participate in on-call rotations, and focus on solving complex distributed systems problems at massive scale.

Abridge

Abridge is seeking a highly experienced and motivated Senior Application Security Engineer to join their growing team. This is a key technical leadership role focused on building security from the ground up at the forefront of AI in healthcare. You will shape product, infrastructure, and engineering practices by impacting the vision and execution of the secure software development lifecycle (SDLC) across the entire product portfolio. The role involves collaborating with product and engineering teams to integrate security seamlessly, automate security controls, and foster a secure-by-default culture. This position demands deep technical expertise, a builder's mindset, and strong communication skills to influence security across the organization.

Mistral AI

Mistral AI is seeking passionate and skilled software engineers to join our team as Backend Engineers. You will contribute to the development of core systems powering our main products, AI Studio, Le Chat & Mistral Code, shaping how users and developers interact with our AI platform at scale. You'll work on building reliable, high-performance backend systems and APIs that serve millions of users and developers, directly impacting the developer and user experience. We welcome engineers at all levels, from fresh graduates to senior and staff engineers, who are eager to learn, collaborate, and ship impactful products.

Mistral AI

Mistral AI is seeking experienced backend software engineers to join our Deployment team. You will be responsible for deploying and integrating our AI products, including models and APIs, across various infrastructure configurations, from major cloud providers to self-hosted solutions. This role involves close collaboration with research, product, and solution architect teams to ensure our frontier models are accessible to customers across different environments. We are a dynamic, collaborative team passionate about democratizing AI through high-performance, open-source models and a comprehensive AI platform.

OpenAI

The Engineering Acceleration team designs, builds, and maintains the foundational systems that engineers use to build ChatGPT and the API. This is a fast-growing team where you will have the opportunity to own and define the strategy, vision, and plan for increasing developer productivity. You will drive the design, development, and implementation of tools, systems, and processes that accelerate engineering velocity, reduce manual effort, and increase the quality of output. You will also use our latest AI tools to re-think how we can be the most productive team in the industry, working closely with various teams within OpenAI to understand their workflows, challenges, and needs.

OpenAI

At OpenAI, we are seeking a software engineer to help build out our trust and safety capabilities, ensuring the safety, robustness, and reliability of AI models and their deployment. In this role, you will work with our engineering team to design and implement systems that detect and prevent abuse, promote user safety, and reduce risk across our platform. You will be at the forefront of our efforts to ensure that the immense potential of AI is harnessed in a responsible and sustainable manner.

Mistral AI

Mistral AI is seeking a passionate and skilled Senior Frontend Engineer to join their growing team. This role offers the unique opportunity to work on the company's complete range of products, contributing to their development and enhancement. The work will directly impact the user experience, making it more engaging, efficient, and intuitive. Mistral AI believes in democratizing AI through high-performance, optimized, open-source, and cutting-edge models, products, and solutions, aiming to integrate AI seamlessly into daily working life.

LangChain is seeking a Senior Fullstack Engineer to join our commercial product team for LangSmith, an observability and evals platform. In this role, you will have the opportunity to shape the technical direction of our platform while working closely with enterprise customers, developer end-users, and internal stakeholders. You will lead the technical architecture and implementation of key product features, collaborate closely with product and design teams, and mentor junior engineers. This is an opportunity to contribute significantly to a rapidly growing company with a strong foundation in open-source tools and a significant market presence.

$175k - $240k

Mistral AI

Mistral AI is a pioneering company focused on democratizing AI through high-performance, open-source models and solutions. We are seeking passionate and skilled software engineers to join our dynamic, collaborative team. In this role, you will design, build, and maintain our data infrastructure, ensuring data accuracy, accessibility, and security. Your contributions will be crucial in enabling our science teams to enhance AI model quality and empowering business users to make informed decisions.

LangChain is seeking a core maintainer for its Python Open Source team. This role involves maintaining and improving the LangChain Python package, focusing on building reliable abstractions for AI agents and integrating them with real-world systems. The team works closely with the open-source community, ensuring the core libraries remain stable, scalable, and production-ready. This position will significantly shape the developer experience for building AI applications with Python.

$160k - $240k

OpenAI

OpenAI is seeking a senior researcher passionate about AI safety to join the Safety Oversight Research team. This role will be instrumental in setting research directions to ensure safe AGI and will focus on identifying and mitigating misuse and misalignment in AI systems. You will play a critical part in defining the future of safe AI systems at OpenAI, significantly impacting our mission to build and deploy safe AGI. The Safety Systems team is dedicated to ensuring our advanced models can be safely deployed for societal benefit, driving our commitment to AI safety and fostering trust and transparency.

OpenAI

As a Data Scientist on the Applied Product team, you will contribute to a data-driven product development culture for consumer and enterprise products at OpenAI. This is critical as our products reach millions of users and businesses worldwide. We are focused on aligning both research and product development to drive measurable impact for these individuals and organizations alike. You should expect to define our north-star metrics, design A/B tests, and establish source-of-truth dashboards that the entire company can use to answer their own product questions. Most importantly, you should expect to be a core member of the product development team.

OpenAI

We are seeking a Senior Support Engineer to collaborate directly with our strategic enterprise accounts and product teams, helping solve some of the most difficult problems faced by our Customers. You will be part of the best technical troubleshooting team at OpenAI, and our Customers and Engineering teams will look to you for technical guidance in addressing the most technically difficult issues in our environment. As a Senior Support Engineer, you will design and run operational processes to monitor our top strategic customers and a 24x7 response team. You’ll work closely with our Infrastructure and Engineering teams to deliver the best possible experience to customers at scale. Working directly with our most strategic Customers, you will be crucial to the success of the most innovative, disruptive, and high-scale AI solutions being built with the OpenAI API platform. The nature of this role will be low volume, high difficulty.

Mistral AI

Mistral AI is seeking an Applied AI Engineer focused on DevOps to help customers adopt our AI products and solve complex technical challenges. In this role, you will apply your problem-solving abilities, creativity, and technical skills to assist organizations in leveraging AI for significant impact. You will gain unique insights and contribute to critical global industries and institutions. Your responsibilities will resemble those of a startup CTO, working in small teams to own the end-to-end execution of high-stakes projects, which may involve discussing architecture, managing large-scale data, coding applications, engaging with customer executives, and strategizing for the Applied Engineering team.