Python Jobs

OpenAI

We are seeking a Backend Software Engineer to architect and scale the infrastructure powering our knowledge systems. This is a deeply technical and highly cross-functional role where you will build robust systems and backend services that serve as the foundation for how knowledge is created, accessed, and applied across OpenAI. You will design, build, and maintain backend services and APIs to support intelligent automation and knowledge systems, integrate and structure data across internal platforms, and collaborate closely with product, research, and engineering teams to integrate OpenAI models into high-leverage workflows. You will own the full development lifecycle of new backend systems and internal platform capabilities, building with scale and maintainability in mind while rapidly iterating on new ideas.

At HeyGen, we are at the forefront of developing applications powered by our cutting-edge AI research. As a Data Infrastructure Engineer, you will lead the development of fundamental data systems and infrastructure. These systems are essential for powering our innovative applications, including Avatar IV, Photo Avatar, Instant Avatar, Interactive Avatar, and Video Translation. Your role will be crucial in enhancing the efficiency and scalability of these systems, which are vital to HeyGen's success.

Harvey

Harvey is transforming how legal and professional services operate by combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise. This is a rare chance to help build a generational company at a true inflection point, with strong product-market fit and world-class investor support. The team moves fast, takes ownership, and is deeply committed to the mission, operating with intensity and pushing for excellence. As a Staff Full Stack Software Engineer, you will play a pivotal role in shaping the foundation of our product platform while directly building user-facing features for leading law firms and enterprise customers. This role is ideal for engineers excited by the opportunity to move between deep platform thinking and hands-on product iteration.

Decagon is seeking an experienced software engineer to join the AI Platform team and help build the company's AI-native developer platform. This role sits at the intersection of distributed systems, developer tooling, and applied AI, focusing on experimenting with new agentic workflows and transforming promising ideas into dependable systems for the engineering organization. The position is highly product-oriented, requiring close collaboration with engineers to identify automation opportunities and ownership of solutions from architecture through production operation.

$200k - $400k

Harvey

Harvey is transforming legal and professional services by combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise. This is a rare opportunity to help build a generational company at an inflection point, with strong product-market fit and world-class investor support. The team moves fast, takes ownership, and is deeply committed to the mission, operating with intensity and pushing for excellence. As an Engineering Manager, Product, you will shape the foundation of our product platform and build user-facing features for leading law firms and enterprise customers. This role is ideal for engineers excited by the opportunity to move between deep platform thinking and hands-on product iteration.

Harvey

As a Software Engineer on the Product Engineering team at Harvey, you will own and lead engineering projects across our various product lines. You will work closely with our AI, Legal, and GTM teams to build secure systems that deliver value to our customers. We are looking for individuals who have worked across the stack on incredible products across consumer, enterprise, and various industries and who are excited about building the future of application layer and genAI products.

$200k - $260k

Mistral AI

As an Associate AI Deployment Strategist, you will support the adoption and deployment of Mistral’s AI solutions, working closely with customers and internal teams to bridge the gap between strategic vision and practical implementation. This role is ideal for early-career professionals eager to learn, grow, and contribute to transformative AI projects in a collaborative environment. You will assist in designing AI roadmaps, collaborating with the Solution team to deliver solutions, and ensuring smooth transitions from presales to postsales. Your work will directly contribute to customer success, helping turn AI potential into real-world impact.

HeyGen is seeking a Software Engineer with data engineering responsibilities to bridge the gap between core application development and large-scale data infrastructure. You will help build the data foundational layers for our next-generation features, enabling AI models to function in real-time, building robust pipelines for multimedia, and powering engaging user experiences. This role is crucial for developing cutting-edge features like PPT-to-video converters and interactive, conversational video capabilities.

$180k - $220k

OpenAI

As an AI Architect, you will be the senior technical owner for a named portfolio of customers, acting as the primary technical counterpart to their leadership teams. You will shape each customer's AI strategy and guide their journey from pre-sales discovery and solution evaluation through deployment, adoption, and measurable business impact. You will own the technical account plan across ChatGPT Enterprise, the OpenAI API, Codex, and other agentic AI solutions, translating business priorities into a focused use-case portfolio and an actionable adoption roadmap. You will remain accountable for the technical outcome while bringing in the right specialists across deployment, implementation, enablement, security, product, and partners to provide deeper expertise and execute work where needed. This role requires strong industry fluency, sound architectural judgment, and the ability to move confidently between executive strategy and hands-on technical conversations.

OpenAI

As an AI Architect, you will be the senior technical owner for a named portfolio of customers and the primary technical counterpart to their leadership teams. You will act as the “CTO of your book of business”, shaping each customer's AI strategy and guiding their journey from pre-sales discovery and solution evaluation through deployment, adoption, and measurable business impact. You will own the technical account plan across ChatGPT Enterprise, the OpenAI API, Codex, and other agentic AI solutions. In partnership with the Account Director, you will translate business priorities into a focused use-case portfolio, an actionable adoption roadmap, and a clear path to durable customer value and growth. You will remain accountable for the technical outcome while bringing in the right specialists across deployment, implementation, enablement, security, product, and partners to provide deeper expertise and execute work where needed. This role calls for strong industry fluency, sound architectural judgment, and the ability to move confidently between executive strategy and hands-on technical conversations.

OpenAI

As an AI Architect, you will be the senior technical owner for a named portfolio of customers and the primary technical counterpart to their leadership teams. You will act as the “CTO of your book of business”, shaping each customer's AI strategy and guiding their journey from pre-sales discovery and solution evaluation through deployment, adoption, and measurable business impact. You will own the technical account plan across ChatGPT Enterprise, the OpenAI API, Codex, and other agentic AI solutions. In partnership with the Account Director, you will translate business priorities into a focused use-case portfolio, an actionable adoption roadmap, and a clear path to durable customer value and growth. The Account Director owns commercial strategy; you own the technical strategy, customer journey, and path to production value. You will remain accountable for the technical outcome while bringing in the right specialists across deployment, implementation, enablement, security, product, and partners to provide deeper expertise and execute work where needed. This role calls for strong industry fluency, sound architectural judgment, and the ability to move confidently between executive strategy and hands-on technical conversations.

Replit

Join our Enterprise Platform team and build the infrastructure foundations that enable the world's largest organizations to run Replit within their security and compliance boundaries. As a Software Engineer on this team, you'll design and implement the deployment flexibility, networking capabilities, authorization systems, and data controls that enterprises require, from single-tenant architectures and private connectivity to custom policy enforcement and customer-managed encryption. You'll work at the intersection of cloud infrastructure and enterprise requirements, partnering with Platform Engineering, Security, and Sales to ship capabilities that unlock adoption at demanding organizations.

Harvey

Harvey is transforming legal and professional services by combining agentic AI, an enterprise-grade platform, and deep domain expertise. This role offers a unique opportunity to build a generational company at an inflection point, scaling rapidly and defining a new category. The team operates with intensity, ownership, and a commitment to the mission, valuing decisiveness, simplicity, and continuous improvement. If you are driven to do the best work of your career alongside like-minded individuals, Harvey is the place to be.

$193k - $290k

Sierra is building a platform to enable companies to create better, more human customer experiences with AI. We are seeking a GTM Engineer to implement Go-to-Market software for our marketing, sales, and agent development teams. This role involves designing and building automated workflows, integrations, and AI-powered systems to manage the lead lifecycle from enrichment to outbound activation. You will own the enrichment infrastructure end-to-end, build AI agents and internal tools to enhance sales team productivity, and develop data architecture for efficient data flow. The ideal candidate will have a strong understanding of modern GTM stacks and production experience with LLMs.

Replit

Replit is seeking an experienced Growth Infrastructure Engineer to build and maintain the technical foundation for scalable growth experiments, high-performance data pipelines, and automated systems. This role is at the intersection of growth, product, and infrastructure, requiring deep technical engineering skills combined with an understanding of experimentation and data-driven optimization. You will collaborate with product, data science, and backend teams to ensure growth initiatives run smoothly and scale efficiently across systems. This is a unique opportunity to be an early member of a new Growth team, with significant ownership and influence over technical direction and product outcomes, working on a product that has experienced massive user growth.

Poolside is building a world where AI drives economically valuable work and scientific progress, aiming to accelerate software development through agentic systems and frontier models. This role is a core part of the Pretraining Data team, responsible for building and scaling the Model Factory, a system for rapid training, scaling, and experimentation with foundation models. The primary mission is to architect and maintain high-performance pipelines that transform trillions of raw tokens into high-quality dataset "fuel" for models. This involves engineering ingestion, deduplication, and streaming systems for petabyte-scale data, bridging the gap between raw web crawls and GPU clusters, and directly influencing model performance through superior data modeling and distributed pipeline optimization. Collaboration with Pretraining, Posttraining, Evals, and Product teams is key to generating high-quality datasets that address missing model capabilities and downstream use cases.

Poolside is building a company to achieve Artificial General Intelligence, focusing on accelerating software development through agentic systems and frontier models. This role is on the data team, with the primary mission to improve the quality of datasets used for training models across the entire training cycle. The focus is on generating synthetic data at scale and determining the best strategies to leverage this data for training large models. You will collaborate with various teams to define data needs that address missing model capabilities and downstream use cases, staying current with research in synthetic data generation and LLM training. This is a hands-on role involving leading research initiatives through experiments and deploying engineering solutions into production, with access to performant distributed data pipelines and large GPU clusters.

Cohere

Cohere is seeking senior software engineers with Applied AI experience to join their team as Forward Deployed Engineers for the Agentic Platform in Korea. This role involves bridging Cohere's North AI workspace platform with client engineering teams, focusing on solving complex problems and securely integrating AI into critical sectors. You will be responsible for the design, build, and deployment of agentic workflows powered by Large Language Models (LLMs), from prototypes to production-grade AI agents, delivering tangible business value. This position requires working closely with customers on real-world business problems, often building novel agent workflows that integrate LLMs with tools, APIs, and data sources, ensuring reliability, observability, safety, and auditability from the outset.

$20k - $40k

The ML Infrastructure team builds large-scale compute, storage, and software infrastructure to support the company's work building the world's best agentic coding model. This role works closely with ML researchers and engineers to enable their work through improvements to our training framework, systems reliability/performance, and developer experience. We are looking for strong engineers interested in building high-performance infrastructure and the software to support it.

Mistral AI

Mistral AI is democratizing AI through high-performance, optimized, open-source models and solutions. We are a dynamic, collaborative team passionate about AI's potential to transform society, with a diverse workforce driving innovation. As a Research Engineer – ML track, you will build and optimize large-scale learning systems powering our open-weight models. You will work hand-in-hand with Research Scientists, either enhancing the shared training framework and data pipelines or embedding within a research squad to turn fresh ideas into scalable code.