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X Ads is a high-leverage product area at X, focused on rebuilding its platform with modern infrastructure and AI at its core. This is an opportunity to join a small, fast-moving team where engineers can take on significant ownership, learn from experienced colleagues, and ship impactful products. The role involves working across product, backend systems, infrastructure, and AI-powered features that directly influence a substantial portion of X's revenue. We are seeking high-slope software engineers eager to transform the X Ads Platform using SpaceXAI's infrastructure and AI stack, particularly those early in their careers who learn quickly, ship fast, and are excited to understand and improve large-scale advertising systems with AI.

$150k - $350k

The Data Platform team builds and operates the infrastructure responsible for all large-scale data transport and processing across the company. We own and manage core systems including Apache Kafka, HDFS, Spark, Flink, and Trino, enabling real-time ML pipelines, feed ranking, experimentation, analytics, and observability at petabyte scale. Our team deals with latency-critical workloads, high-throughput streaming, and distributed compute systems that require fault tolerance, performance, and absolute reliability. As a software engineer on the Data Platform team, you will design, build, and operate the distributed systems powering SpaceXAI's data movement and compute. You will take ownership of infrastructure components that process trillions of events daily, driving the scalability, performance, and reliability of the systems that power product and ML workloads across the company.

$180k - $440k

As a backend engineer, you will design and build scalable, high-performance systems that power subscriptions infrastructure, new monetized products, user growth, and creator monetization. You will work on mission-critical infrastructure that processes millions of transactions, optimizes user acquisition and retention, and enables creators to earn a living through their content. This is a unique opportunity to make a large-scale revenue impact while creating products that users and businesses love.

$150k - $400k

SpaceXAI is building AI systems to understand the universe and aid humanity's pursuit of knowledge. The X Search team is responsible for the core search engine that powers discovery on X, owning the full end-to-end search stack from real-time retrieval and indexing to ranking and the end-user search experience. The goal is to create the most relevant, fast, and intelligent search experience on the internet by combining state-of-the-art information retrieval systems with Grok's reasoning capabilities.

$180k - $440k

SpaceXAI is seeking a Site Reliability Engineer focused on campus reliability to design and implement systems that ensure the availability and trustworthiness of our campus infrastructure. This role involves technically leading cross-discipline incident responses and building mechanisms to minimize future incidents. You will act as the central point of contact across compute, network, storage, power, and cooling systems, requiring strong incident leadership, fleet-scale observability expertise, and the ability to drive reliability improvements across both software and facility domains.

Applied Intuition is seeking a Senior Software Engineer to join their Cloud Infrastructure team. This role is responsible for building and maintaining the platform that powers the company's AI workloads and enterprise AI platform, Dana. The team operates in a cloud-native and cloud-agnostic environment, utilizing Kubernetes and managing infrastructure as code across the full stack, including compute, networking, storage, and observability. The position involves designing and operating multi-cluster Kubernetes infrastructure, building multi-tenant platform primitives, and orchestrating secure execution environments for agentic workloads. This is a hands-on infrastructure role with significant platform-building and solutions-architecture responsibilities, requiring close collaboration with internal engineering teams and ownership of architectural decisions and incident response.

$60k - $300k

Anthropic

Anthropic is seeking talented individuals for its Fellows Program, focusing on AI research and engineering to ensure AI systems are reliable, interpretable, and steerable. This program provides funding and mentorship to promising technical talent, regardless of prior experience, to work on empirical projects aligned with Anthropic's research priorities. The goal is to produce public outputs, such as paper submissions, contributing to the development of safe and beneficial AI for society. Fellows will engage in full-time research for four months, with direct mentorship from Anthropic researchers and access to a shared workspace in either Berkeley, California, or London, UK. The program also offers connections to the broader AI safety and security research community.

$25k - $50k

Decagon is seeking a Director of Solutions Engineering to build and lead our growing pre-sales solutions engineering function. This role combines technical depth, enterprise consultative engagement, and team leadership, enabling Decagon to drive adoption of our AI-native platform across some of the world’s most complex enterprises. As a manager of the Solutions Engineering team, you will be responsible for hiring, mentoring, and developing a high-performing team of Solutions Engineers. You’ll establish scalable processes and best practices for pre-sales engagements, ensure technical excellence in customer conversations, and represent Decagon as a senior technical leader on key opportunities. This role is highly cross-functional: you will partner closely with Sales, Product, and Engineering to design strategies that align technical capabilities with customer outcomes. You will also bring strong executive presence to customer engagements, guiding both technical and business stakeholders through how Decagon integrates into their technology environments and drives measurable business value.

$320k - $400k

We are seeking a Business Manager to establish and maintain the operational backbone of LiteLLM. This hands-on role requires meticulous attention to detail in finance and bookkeeping, ensuring accurate financial records, managing accounts payable, reimbursements, payroll coordination, and invoicing. You will also take ownership of people operations, including HR administration, onboarding, offboarding, benefits, and employee records, utilizing platforms like Rippling or Gusto. Additionally, you will oversee legal and business operations, coordinating contracts, insurance, and compliance, and manage office and executive operations, supporting founders with administrative projects and coordinating vendors and events. The ideal candidate possesses strong judgment, a sense of urgency, and the ability to learn quickly, working effectively with external experts while maintaining internal accountability.

OpenAI

We are seeking a driven solutions leader with a product mindset to partner with public sector customers and ensure they achieve tangible value with GenAI. You will collaborate with government agencies, policymakers, and public institutions to establish a GenAI strategy and identify high-value applications. You'll then work with their technical teams, subject matter experts, systems integrators, and implementation partners to move from prototype through production, designing architectures using the OpenAI API and other services to maximize customer value. This role involves close collaboration with Sales, Solutions Engineering, Global Affairs, Applied Research, and Product teams.

Clay is seeking a Partner Technical Engineer to join its Data & Integration Partnerships team. This role is crucial for managing the technical quality of data providers and ensuring new partners are technically ready before integration into Clay's data marketplace. You will define testing methodologies, build scoring models to rank providers, and act as a technical gatekeeper for new partners, assessing their integration readiness before commercial discussions. You will collaborate with internal teams like Product and Engineering, as well as external partner technical teams, to drive the success of Clay's data ecosystem.

Cloudflare is on a mission to help build a better Internet. As enterprise solutions become more complex, Cloudflare is evolving how they partner with customers. The Customer Engineer (CE) drives the technical go-to-market strategy. You act as a trusted advisor who owns the technical relationship from first discovery to long-term adoption and account growth.

Cloudflare is on a mission to help build a better Internet. As enterprise solutions become more complex, Cloudflare is evolving how they partner with customers. The Customer Engineer (CE) drives the technical go-to-market strategy. You act as a trusted advisor who owns the technical relationship from first discovery to long-term adoption and account growth.

LangChain is seeking a Senior Backend Engineer to join the Enterprise Readiness team, specifically on the billing and monetization pod. This role will be instrumental in rebuilding and scaling the systems responsible for pricing and billing usage across all LangChain products. The goal is to transform the current billing pipeline into a flexible, self-serve platform that enables any team at LangChain to launch new pricing models rapidly, reducing the time from weeks to days. This is a high-impact, newly formed role where you will partner closely with product management and engineering teams to define the architecture for fast, flexible, and accurate pricing at scale, including complex usage-based and token-based models for AI products.

$175k - $240k

Replit

Replit is seeking a founding engineer to establish the technical direction for Growth Enablement. This role involves rethinking growth systems for an AI-driven future, where agents can analyze performance, identify issues, take action, and learn from outcomes. You will build agentic systems and foundational elements for attribution, audience management, customer lifecycle engagement, referrals, and promotions, spanning web, mobile, billing, and data. Collaborating directly with marketing, sales, and partnerships teams, you will identify high-impact problems and deliver initial solutions that will evolve into platforms to accelerate team velocity and provide clearer insights into durable growth drivers.

Anthropic

Anthropic is dedicated to creating AI systems that are reliable, interpretable, and steerable, aiming for AI to be safe and beneficial for users and society. The Takeoff Intel team specifically focuses on measuring the increasing delegation of AI development to AI systems themselves. This involves designing evaluations of AI R&D capabilities, building internal telemetry to track AI-assisted model development, and developing quantitative methods to understand AI capability growth. The team's work informs internal research priorities and safety planning, as well as external reporting on AI progress. As a Research Engineer on this team, you will build and operate the evaluation and measurement instruments essential for this research, working across infrastructure, data processing, and analysis tooling with a focus on delivering impactful prototypes.

Chanakya is Sarvam AI's specialized vertical for national security and institutions of national importance, encompassing pricing, business, product, engineering, custom-model, and vendor functions. The goal is to solve complex problems in the strategic sector, serving armed forces, intelligence agencies, financial regulators, and national policy bodies. This role offers a unique opportunity for national impact, unparalleled end-to-end learning across the full technology stack, and a clear path to leadership within emerging functions. The team has achieved product-market fit, secured significant revenue, and is undertaking large strategic projects, providing a zero-to-one journey backed by Sarvam's capabilities.

OpenAI

As an Applied AI Engineer, you will partner directly with leading organizations to design, build, and deploy AI systems that deliver measurable business outcomes. You will combine deep technical judgment, hands-on engineering, and customer leadership to take ambitious ideas from use-case selection and architecture through prototyping, evaluation, production launch, and scale. You will write and debug code, build evaluation systems, resolve complex integrations, and guide decisions involving model behavior, reliability, latency, cost, safety, security, governance, and operational readiness. Success is measured by production systems, sustained adoption, and meaningful customer impact. This is a rare opportunity to work on consequential real-world deployments at the frontier of AI while directly influencing how OpenAI’s products evolve.

Anthropic

As an Applied AI Engineer within the Enterprise team, your role is to guide some of France's largest companies to the forefront of AI and help them deploy Claude in their operations, products, and ways of working. You will become the go-to specialist for the Claude platform and the trusted technical advisor to your clients. You will advise their engineering teams on architecture, agent design, and evaluation, and work with executives and senior leaders sponsoring these programs to demonstrate Claude's value and aid in informed adoption decisions. Enterprise engagements differ from typical transactions, involving longer procurement cycles, more stakeholders, and success contingent on linking technical work to board-level outcomes. You will be equally comfortable advising an engineering team on evaluation and architecture as you are presenting a value case to a CIO or CTO, carrying the technical thread through multi-quarter engagements.

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. The Customer Engineer (CE) is the core driver of our technical go-to-market strategy, acting as a trusted technical advisor and primary architect of the customer journey. You will bridge the gap between technical strategy and business value, guiding enterprise clients from initial pre-sales technical validation through onboarding, deployment architecture, and full lifecycle expansion. You will operate as a quota-carrying technologist, leveraging AI-augmented workflows to eliminate administrative toil so you can focus on high-value architectural design and driving measurable business outcomes.

$20k - $50k