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Anthropic

The Safeguards ML Sampling Path team builds and operates the production services that power Claude's safety systems. These services are critical, sitting on the token generation path across every platform Claude runs on. You will be responsible for maintaining low latency and high reliability as traffic grows, ensuring robustness against dependency failures, and safely deploying changes to a system that cannot afford downtime. This role involves designing, building, and operating backend systems that process every token on the generation path, managing the streaming contract with the API and inference engines, and owning latency and reliability end-to-end.

Braintrust is seeking Platform Support Engineers at both mid and senior levels to join a small, high-ownership team. This role focuses on providing technical support for customers who deploy Braintrust within their own AWS, Azure, and GCP accounts, often behind their own VPCs and compliance requirements. You will be the technical front line for infrastructure, performance, and reliability issues, working closely with Cloud Infrastructure and Engineering teams. If you enjoy solving complex infrastructure challenges with a direct customer impact, this is the role for you.

Decagon is seeking a technically strong Technical Accounting & Financial Reporting Manager to manage complex, non-routine accounting matters as the company scales. This high-impact individual contributor role is for someone adept at resolving intricate GAAP questions, including revenue recognition, business combinations, and stock-based compensation, and translating them into clear, actionable conclusions. You will collaborate with Legal, Sales, Founders Office, Revenue Operations, and Finance to influence deal structure and pricing strategy for new products and deals, while also building the technical accounting infrastructure, policies, memos, and controls essential for a fast-growing, pre-IPO company.

$40k - $350k

Cloudflare is seeking a Senior Distributed Systems Engineer to join the Cache team. This team builds and operates the high-performance reverse proxy and caching data plane at Cloudflare's edge, built on Pingora, Cloudflare's open-source Rust framework. The role involves working on backend routing, load balancing, cache storage, globally distributed purge, Tiered Cache routing, and production observability. You will design, implement, test, roll out, and operate these systems, ensuring performance, correctness, and resilience across Cloudflare's global network. This position is ideal for individuals who enjoy tackling complex problems related to latency, correctness, and reliability in large-scale distributed systems.

$194k - $266k

Anthropic

Anthropic is seeking an Applied AI Architect to join the Beneficial Deployments team, focusing on maximizing the impact of Claude within the life sciences sector. The primary goal is to accelerate scientific progress across R&D and translation by making Claude the essential tool for the life sciences ecosystem, from academic discovery to biotech and pharmaceutical pipelines. This role involves serving as the main technical advisor to life sciences partners, driving engagements from discovery to deployment, and collaborating with the segment lead and Applied AI Engineers to achieve impactful outcomes. You will be a key member of the founding Beneficial Deployments Applied AI team, dedicated to advancing life sciences with AI.

Harvey

Harvey is transforming legal and professional services by combining agentic AI, an enterprise platform, and domain expertise. We are seeking a privacy lawyer to join our growing global legal team in EMEA. You will play a key role in maintaining and promoting a culture of privacy and security within the organization, collaborating with legal, sales, engineering, and product teams to ensure business practices adhere to global privacy laws and regulations. This role involves partnering closely with the security function to safeguard data integrity and advising on privacy implications of product development.

Harvey

Harvey is transforming legal and professional services by combining agentic AI, an enterprise platform, and domain expertise. We are seeking a privacy lawyer to join our growing global legal team as we expand across EMEA. You will play a key role in maintaining and promoting a culture of privacy and security within the organization, collaborating with legal, commercial, sales, engineering, and product teams. Your work will ensure our business practices adhere to global privacy laws and regulations, and you will partner closely with the security function to safeguard data integrity.

At Cloudflare, we are on a mission to help build a better Internet. We are looking for builders who see the cracks in the Internet and have the AI-native curiosity to create solutions using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow. This Partner Engineer role is a high-impact, strategic technical sales leader responsible for the end-to-end technical lifecycle and enablement of assigned partners, managing both pre-sales and post-sales engineering activities. You will act as the single technical point of contact and trusted advisor for your assigned partners, driving technical validation during the sales cycle, architecting their delivery readiness, and ensuring ongoing Partner Success.

€96k - €130k

Synthesia is seeking a Machine Learning Engineer to build the AI engine for their Roleplay Sessions product. This product allows users to practice real conversations with AI avatars and receive instant feedback. The AI engine will be responsible for processing user input, scoring performance, generating feedback, and controlling avatar responses. This is an applied ML position focused on product development, requiring a blend of ML knowledge and strong software engineering skills for fast iteration and problem-solving.

$30k - $40k

This role is designed for new graduates who are eager to work on real-world AI systems in production from day one. As a Member of Technical Staff at Fireworks, you will write and deploy code that operates on one of the world's most active inference platforms, serving hundreds of models to developers and enterprises at a massive scale. You will be matched to a team based on your strengths and interests, with potential work spanning inference and performance, model training and fine-tuning, distributed systems and cloud infrastructure, developer platform and APIs, or product and full-stack application engineering. You will be supported by a senior engineer mentor and a structured ramp-up program, starting with well-scoped problems and progressing to owning features and systems independently. The company emphasizes a fast-paced environment with a high bar and a commitment to employee development.

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 Senior Technical Customer Experience (CX) Specialist role is designed for experienced support operators who thrive in complexity and ambiguity, serving as the primary escalation point for the most complex, technical, or nuanced customer issues while remaining deeply hands-on in the support queue. This role is ideal for someone who loves solving hard problems, operates calmly under pressure, and wants to maximize impact without moving into formal people management.

$112k - $168k

Crusoe is seeking a Staff Applied AI Inference Engineer to accelerate the abundance of energy and intelligence by optimizing large language models for production environments. This role involves owning the inference stack end-to-end, from profiling costs and implementing modern optimization techniques to deep dives into serving code when defaults are insufficient. The work is applied, focusing on real-world deployments with specific models, traffic patterns, latency targets, and cost constraints. You will collaborate with customer engineering teams to tailor deployments, transition workloads from proof-of-concept to fully monitored production services, and ensure engineered gains benefit end-users. This is a hands-on engineering position requiring coding, profiling, and low-level optimization, with a customer-facing component involving product and technical solutions work.

$215k - $260k

As a Principal Solutions Architect for Developer Platform, you will own the regional technical strategy for Cloudflare’s most important Developer Platform customer and partner engagements. You will collaborate with engineering leaders, architects, developers, security teams, and executives to define architectures, validate technical approaches, and facilitate the migration of production workloads to Cloudflare. This role involves managing a portfolio of strategic engagements rather than focusing on a single account. A key aspect of this position is translating field experience into broader impact by creating reusable architectures and technical guidance, developing other architects, and providing product teams with clear insights into regional customer needs. This is a senior individual-contributor role that combines hands-on architecture, executive influence, regional technical leadership, and mentorship.

Anthropic

Anthropic is seeking a Startup Partnerships Lead to drive growth and strategic alignment by forging and managing high-impact startup partnerships. This role will focus on driving the adoption of Anthropic's AI capabilities within the startup ecosystem through innovative programs that enable easy access and utilization of advanced AI models. The goal is to scale reach and impact by engaging directly with startups and through the accelerator ecosystem. This is an individual contributor role with broad ownership, requiring close collaboration with sales, marketing, and product teams.

Fireworks is seeking PhD graduates to join their Systems Infrastructure team. This role is designed for individuals finishing their PhD in Computer Science, Computer Engineering, Electrical Engineering, or a similar field, who are interested in applying their research to large-scale, real-world AI infrastructure. You will be responsible for designing and building the core systems that power Fireworks, including schedulers, storage systems, and networks, to ensure efficient operation of tens of thousands of accelerators and low inference latency. You will tackle complex problems such as optimizing job placement on heterogeneous hardware, high-speed data movement for model weights, and maintaining saturated datacenter networks. You will be paired with a senior engineer mentor and work on impactful projects from day one, with start dates flexible around thesis defense.

Anthropic

Anthropic's Security Governance, Risk, and Compliance (GRC) team is responsible for ensuring the company meets its security and control commitments. This role focuses on the Sarbanes-Oxley (SOX) control environment over the technology stack, crucial for a public company. The position involves defining control requirements and acceptance criteria for IT general controls (ITGCs) in partnership with Internal Audit, and validating that implemented systems meet these requirements. The role also encompasses owning product management for control design methodology and continuous control monitoring, initially for ITGCs and expanding to other security and compliance areas.

Cloudflare is seeking a Principal Partner Solutions Engineer based in Tokyo, Japan, to drive the technical lifecycle and enablement of assigned partners. This high-impact role involves managing both pre-sales and post-sales engineering activities, acting as a trusted technical advisor. The focus is on driving value-based solution selling to accelerate the adoption of Cloudflare's platform, particularly Cloudflare One (SASE/SSE) and AI Infrastructure (Workers AI / AI Gateway). By cultivating technical champions within partner organizations, aligning architectures to business outcomes, and optimizing post-sales delivery, you will directly expand pipeline and maximize Partner-Influenced Opportunity (PIO) revenue. We are looking for builders who are curious, proactive, and leverage AI to solve tough problems and improve the Internet.

WRITER is a leading enterprise AI company focused on orchestrating AI-powered work and expanding human capacity through superintelligence. Our platform helps companies build and deploy AI agents grounded in their data and powered by enterprise-grade LLMs. Backed by significant investment, WRITER is rapidly solidifying its position as a leader in enterprise generative AI. We are seeking talented individuals to join our fast-paced team and contribute to creating a better future of work with AI.

The Sandbox service team at SpaceXAI builds and maintains a secure, scalable system that gives our models safe, controlled access to computational environments. This infrastructure powers critical workloads across training and product, enabling models to run code, build software, interact with tools, and even control applications with user interfaces. We provision containers and virtual machines on large-scale clusters, granting models interactive control over these remote environments. Our work spans the full stack: from orchestrating massive jobs and resource scheduling at the cluster level, to fine-tuning filesystem performance on nodes. The Sandbox service enables Grok to safely run and test code in real-time for user queries, and supports reinforcement learning in training, where models interactively explore tools ranging from compilers to productivity apps.

£107k - £262k

SpaceXAI is building AI systems to understand the universe and aid humanity. The team is small, highly motivated, and focused on engineering excellence, operating with a flat structure where all employees are hands-on and contribute directly to the mission. This role requires strong communication skills and the ability to share knowledge concisely. The ideal candidate will have a good understanding of building highly scalable and reliable production infrastructure, with familiarity in compiled languages like Rust, C++, or Go being highly beneficial.

£107k - £262k