Python Jobs

Replit

Replit is seeking a Staff Infrastructure Engineer to join their Infrastructure Engineering team. This role focuses on ensuring the reliability, scalability, and performance of Replit's platform, which serves millions of developers globally. The engineer will bridge development and operations, implementing automation and best practices to enable efficient scaling and high availability. The position involves proactively identifying and resolving reliability issues, designing robust monitoring solutions, automating operational tasks, and mentoring the engineering team on reliability principles.

Mercor is seeking a Machine Learning Engineer to build and enhance the ML systems powering their Frontier Data Products. This role is crucial for scoring, validating, and improving complex work products where correctness is nuanced and labels are imperfect. You will design evaluation frameworks for ambiguous tasks, build feedback loops to improve models, and own production ML behavior end-to-end, considering tradeoffs in precision, recall, latency, and cost. This is an applied ML product engineering role with real production constraints, focusing on shipping ML systems that directly impact product and business metrics.

Mistral AI

Mistral AI is seeking a founding engineer for its Applied AI Site Reliability Engineering (SRE) sub-team. This role is crucial for building and operating a framework that ensures the reliability and sustainability of Mistral's AI solutions across all customer accounts, whether hosted by Mistral or the customer. You will operate in four key modes: BUILD (designing for a fleet of platforms, proactive reliability, authoring runbooks, implementing observability), RUN (operating Tier-1 customer environments, ensuring SLO compliance, managing incidents), ENABLE (productizing deployment, security, and scaling of Applied AI solutions), and SECURE (owning security operations, leading CVE response, and implementing supply-chain integrity controls). This is a framework-first, fleet management role focused on structurally solving problems for all customers, not just individual ones. The team values people and outputs, direct feedback, low ego, and high standards in a fast-paced, unstructured environment.

Scale AI

Scale AI is seeking a Backend Engineer to join their team and build the core infrastructure for large-scale GenAI systems. This role involves designing and implementing scalable APIs, distributed data systems, and robust deployment pipelines to ensure production-grade reliability and performance for enterprise AI products. You will be instrumental in shaping how AI systems are deployed and scaled in the real world, working at the forefront of the GenAI revolution and solving complex backend and infrastructure challenges. This is an opportunity to contribute to cutting-edge solutions that transform workflows and drive efficiency for major enterprises.

Scale AI

Scale AI is pioneering the next era of enterprise AI, providing cutting-edge solutions that transform workflows and automate complex processes for large enterprises. The Scale Generative AI Platform (SGP) offers foundational services and APIs for seamless AI integration at production scale. This role focuses on building the core infrastructure for large-scale GenAI systems, designing scalable APIs, distributed data systems, and robust deployment pipelines to ensure production-grade reliability and performance. It's an opportunity to solve hard backend and infrastructure challenges that enable AI to work at enterprise scale and shape how AI systems are deployed and scaled in the real world.

Harvey

Harvey is transforming how legal and professional services operate by combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise. This role offers a chance to build a generational company at an inflection point, with strong product-market fit and investor support, scaling fast and defining a new category. The team moves fast, takes ownership, and is deeply committed to the mission, operating with intensity and pushing for excellence. As a Product Backend Engineer, you will design and operate backend systems that turn cutting-edge AI capabilities into seamless, dependable product experiences, building secure, multi-tenant services and orchestrating interactions with LLMs and agentic tools.

Mistral AI

Mistral AI is seeking strong Software Engineers with cybersecurity experience to build and productionize their cybersecurity product offering. This role involves turning cutting-edge prototypes into robust, scalable services that power both offensive and defensive security capabilities. The work will directly enable the deployment of AI-powered cybersecurity at client sites and provide the infrastructure for continuous training and improvement. This is a unique opportunity to shape how AI-powered cybersecurity operates at scale within a dynamic, collaborative team passionate about AI's potential.

As an Engineering Manager on the Agent Product team, you will lead a group of engineers building and shipping best-in-class AI agents, from initial implementation through continuous iteration. You'll work directly with leaders across industries like finance, healthcare, and hospitality, solving their users' needs with reliable and intuitive AI agents. Managers here are expected to operate with high ownership and technical depth while helping their teams move quickly and maintain a high quality bar. This role is for someone who enjoys mentoring engineers, partnering closely with customers, and diving deep into complex system challenges to build elegant solutions that scale to millions of users.

$280k - $430k

Black Forest Labs is seeking a Developer Experience Engineer to own the end-to-end developer experience for their generative AI platform, powering tools used by millions. This role is crucial for making the platform the choice for developers and agents alike, focusing on speed and ease of use from idea to production. You will identify and resolve friction points across the API, SDK, dashboard, and onboarding flows, working closely with product engineering, API/platform teams, research, and DevRel to ensure a seamless experience.

€140k - €190k

Glean is seeking Backend/Infrastructure engineers to construct a high-performance, scalable, and secure system that ensures enterprise knowledge is readily accessible to employees in all work contexts. This role offers significant opportunities to contribute to building a modern cloud-native application stack, addressing challenges such as developing scalable distributed systems and storage, creating a unified framework for indexing diverse information sources, implementing end-to-end security measures, optimizing for instant user experience while managing system costs, and developing tooling for comprehensive monitoring and deployment across multiple cloud environments.

Scale AI

Scale AI is seeking a Director of Forward Deployed Engineering to lead delivery for their largest and most strategic enterprise accounts. This role involves embedding elite engineers with Fortune 500 customers to ship deeply integrated AI agents, overseeing everything from agent design and evaluation to the backend services, data systems, and cloud infrastructure required for production readiness. The Director will partner closely with Product and core Engineering teams to ensure efficient delivery, translating field learnings into reusable platform capabilities. This is a high-autonomy, founder-mindset position focused on owning outcomes end-to-end, scaling a high-performing team, and shaping enterprise AI adoption.

Scale AI

As a Software Engineer on the Machine Learning Infrastructure team, you will build the "Operating System" for our large-scale GPU clusters. You will architect a high-performance training platform that handles the immense complexity of multi-thousand GPU workloads, ensuring every cycle is used efficiently. Your work directly determines the velocity at which our researchers can train and iterate on the world’s most advanced models. The ideal candidate is a systems expert who thrives on solving the orchestration, networking, and reliability challenges that emerge at massive scale. You will partner closely with researchers to build a seamless, resilient environment that transforms raw compute into breakthrough AI.

$216k - $270k

Scale AI

Our customer base is growing exponentially, and you will be on the front lines of ensuring that the world's most innovative companies become passionate, lifelong, Scale customers. Our Solutions Engineers ensure customers' first experiences with Scale's technology are flawless and lead to a successful long-term partnership. The work will vary daily, and we’re looking for technical experts excited to solve tough problems. As a solution engineer, you will be a part of helping shape our early-stage federal business by re-envisioning our commercial product offerings for our federal clients.

$186k - $233k

Scale AI

Scale's Robotics business unit is focused on solving the data bottleneck in Physical AI across Robotics, Autonomous Vehicles, and Computer Vision. In this role, you will be a key contributor building production systems for robotics data collection, model training pipelines, and evaluation infrastructure. You will have the opportunity to own critical parts of our robotics platform, work directly with cutting-edge robotics and AV customers, and shape the future of embodied AI systems.

Scale AI

Scale is seeking Senior Software Engineers to join our Public Sector team. You will build core product components that enable forward-deployed teams to develop agentic capabilities across multiple domains. This involves creating systems to ingest and process federal datasets for real-time decision-making in challenging environments. You will lead the development of new agentic capabilities, including multi-layered guardrails, optimized data retrieval, orchestration of asynchronous agents, automated deviation alerts, and decision-path illustration.

$162k - $311k

Scale AI

Scale's Physical AI business unit is focused on solving data bottlenecks in Robotics, Autonomous Vehicles, and Computer Vision. This role involves applied research and developing ML pipelines for processing, training, and fine-tuning data collected by Scale, with an emphasis on optimizing algorithms and pipelines for efficient GPU execution in the cloud. You will advance research, shape Scale's offerings, and expand the frontier of data and model evaluation for Physical AI. As an ML Systems Engineer, you will design and build platforms for scalable, reliable, and efficient serving of foundation models tailored for physical agents, powering both internal research and external customer use cases.

$249k - $311k

Scale AI

The Public Sector software engineers at Scale create core product building blocks for forward-deployed teams developing agentic capabilities across multiple domains. This role involves building systems to ingest and process federal datasets for real-time decision-making in contested environments, and developing novel agentic capabilities such as multi-layered guardrails, optimized data retrieval, and asynchronous agent orchestration. As a Staff Software Engineer, you will orchestrate the implementation of vertical features and horizontal capabilities, mentor other engineers, and define technical strategy for key agentic components. You will ensure system reliability and performance across various security classifications and network types, and communicate technical trade-offs to senior stakeholders to influence long-term product strategy.

$189k - $362k

Scale AI

Scale is seeking a Solutions Engineer to join their growing team and ensure that innovative companies become passionate, lifelong Scale customers. In this role, you will partner closely with Account Executives, Product, and Machine Learning Engineers to guide prospective customers through the pre-sales process. You will deliver customized demos and pilots to secure the "technical win," scope customer technical requirements, and develop actionable Statements of Work (SOWs). Solutions Engineers will also collaborate with the delivery team on initial implementations, leveraging expert Scale product and Generative AI knowledge to design solutions that address customer needs and pain points. This role requires strong relationship-building, project management, and technical expertise.

Scale AI

Scale is at the forefront of the AI revolution, developing data engines and technologies that power the world's leading LLMs and generative models. This role is on the Platform Engineering team, responsible for the foundational data infrastructure that supports these cutting-edge AI products. You will lead the design and development of core data storage, streaming, caching, and indexing platforms, gaining exposure to the rapidly evolving AI landscape across various industries. The work involves driving architecture, implementation, and reliability of these critical systems, collaborating with stakeholders, and mentoring junior engineers.

$252k - $315k

Scale AI

Scale GP is seeking a Senior or Staff Infrastructure Engineer to lead the engineering of the 'paved road' for knowledge retrieval and inference engines, defining deployment standards for Agentic workflows at scale. This role bridges complex AI orchestration with world-class infrastructure, ensuring platform reliability for enterprise agents. The ideal candidate is passionate about deep technical work, mentoring, and setting long-term technical strategy while maintaining a hands-on delivery focus. You will architect and implement solutions across multiple cloud providers (GCP, Azure, AWS) for customers in regulated industries.

$252k - $315k