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Scale AI

Scale's Generative AI business unit is experiencing significant growth. As a Strategic Projects Lead (SPL), you will spearhead initiatives projected to generate over $XXM in new revenue. This is a demanding role requiring a broad operational scope, an entrepreneurial mindset, a willingness to delve into details, and a drive for impactful work that fosters accelerated career progression.

Scale AI

Scale's Generative AI business unit is experiencing significant growth. As a Strategic Projects Lead (SPL), you will spearhead initiatives projected to generate over $XXM in new revenue. This is a demanding role requiring versatility across all operational dimensions. The ideal candidate possesses a strong entrepreneurial spirit, a willingness to delve into details, and an enthusiasm for impactful work that fosters accelerated career advancement.

$112k - $190k

LangChain is seeking a Senior Technical Support Engineer to lead customer support for highly technical users, including AI engineers and infrastructure architects. You will be instrumental in helping teams debug production LLM applications and agents, enhance AI observability and evaluations, and resolve critical issues. This role also involves defining world-class technical support standards for modern AI platforms and contributing to the evolution of our products and documentation.

$130k - $195k

Replit

Replit is seeking a Staff Software Engineer for its Money team to lead the integration and operation of financial partnerships. This zero-to-one role involves taking partnerships from initial scoping through to reliable operation, ensuring seamless transactions for Replit's builders and their applications worldwide. You will act as the key technical liaison between Replit engineering and financial partners, including billing platforms, payment processors, and compliance vendors. This position is ideal for someone who enjoys both coding and strategic partnership discussions, understanding that early design decisions have long-term impacts on integration success.

Mercor is seeking an Enterprise AI Associate to join their team. This role operates at the intersection of customer engagement, product management, and go-to-market operations, focusing on helping Mercor's largest enterprise clients successfully deploy and scale AI solutions. The ideal candidate possesses a structured, analytical mindset, thrives on high agency, moves quickly, and takes ownership of ambiguous problem statements. You will be embedded in customer engagements, working with senior leaders to understand client AI priorities and pain points, translating these needs into delivery plans, and contributing to the refinement of offerings, brand positioning, and relaying customer feedback to engineering.

thinkingmachines

Thinking Machines Lab is seeking researchers to bridge the gap between raw AI intelligence and useful, safe, and collaborative systems. This role focuses on post-training data research, combining human insight and machine learning techniques to capture and steer model behavior based on human preferences. You will be responsible for translating research ideas into actionable data through labeling and collection campaigns, understanding data quality science, and developing metrics to measure the impact of data and training interventions. The position also involves exploring new paradigms for human-AI interaction and scalable oversight, blending research, data operations, and technical implementation to advance human-centered AI systems. This role requires both fundamental research and practical engineering, making it ideal for individuals who enjoy deep theoretical exploration and hands-on experimentation.

$350k - $475k

Speak is scaling rapidly across APAC, and we are seeking a People Operations Generalist to join our lean team and enhance our operational capacity across Korea, Japan, and Taiwan. This meaningful and hands-on role involves managing key aspects of the employee lifecycle, including onboarding, offboarding, contracts, HRIS, and multi-market compliance. You will be instrumental in improving and documenting processes, and over time, transforming them into scalable infrastructure that supports our growth across three markets. If you are detail-oriented and eager to make an impact at an early-stage company, this position offers a unique opportunity to shape our People Operations function.

Reflection ai

Reflection is a research lab dedicated to making intelligence open and accessible. This role is foundational, focusing on building model evaluation and safety functions from the ground up. The Research Program Manager will be a key leader, driving clarity, decision-making, and coherence across teams. This is a 0-to-1 opportunity to define evaluation frameworks, build operational infrastructure for model safety, and establish processes that integrate safety into the model development lifecycle.

Reflection ai

Reflection.AI is seeking a Member of Technical Staff - Security Software Engineer to establish our Application Security function from the ground up. This role offers significant autonomy to design and implement solutions across various Security Engineering projects, including AI agent incident detection and response, and internal AI agents. The ideal candidate is a self-starter who excels in high-ownership, low-structure environments and possesses a strong "0 to 1" mindset, ready to build and innovate within a talent-dense team focused on making intelligence open and accessible.

Cohere

Cohere is seeking a Lead Member of Technical Staff to join the Model Serving team. This role will provide technical leadership across multiple teams, driving the architecture and strategy for deploying optimized NLP models to production in low latency, high throughput, and high availability environments. You will be responsible for developing, deploying, and operating the AI platform that delivers Cohere's large language models through easy-to-use API endpoints. The ideal candidate will have a strong background in leading the design of high-performance, scalable, and reliable machine learning systems and will serve as a key point of contact for customers, leading the design of customized deployments and mentoring engineers.

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, scaling fast and defining a new category. The work is ambitious, the bar is high, and the opportunity for growth is unmatched. As a Staff Software Engineer on the Core Infrastructure team, you will play a critical role in designing and building new infrastructure systems while scaling and strengthening existing ones. Our infrastructure powers every user interaction with Harvey, processing billions of prompt tokens and millions of daily requests across our global legal AI platform. You'll work in an environment balanced between innovation and operational excellence, ensuring Harvey remains resilient and efficient as it scales products, regions, customers, and usage. Your contributions will directly impact the reliability, scalability, and security of our platform.

$201k - $264k

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, scaling fast and defining a new category. The work is ambitious, the bar is high, and the opportunity for growth is unmatched. The team moves fast, takes ownership, and is deeply committed to the mission, operating with intensity and pushing for excellence. As a Staff Software Engineer on the Core Infrastructure team, you will play a critical role in designing and building new infrastructure systems while scaling and strengthening existing ones. Your contributions will directly impact the reliability, scalability, and security of our platform as we serve the world's leading law firms and professional service providers.

$236k - $290k

OpenAI

We are seeking a software engineer to help build the platform that qualifies and optimizes inference workloads across heterogeneous compute environments. You will develop both OpenAI-hosted services and secure partner-side software for running long-lived optimization workflows. These workflows generate candidate kernels, runtime configurations, and serving-stack changes; compile and execute them on target hardware; verify their correctness; measure their performance; and use the results to guide further optimization. You will work across model architecture, distributed execution, compilers, runtimes, networking, and accelerator systems. A central part of the role is turning research prototypes and one-off hardware bring-up efforts into reliable, reusable infrastructure with clear contracts, reproducible results, strong observability, and well-defined security boundaries.

Perplexity is seeking a Member of Technical Staff (Software Engineer, Monetization) to own the critical billing platform and monetization systems that power their agentic AI products, including Computer. This role is foundational to Perplexity's revenue streams, responsible for metering agent actions, enforcing credit budgets, and settling costs. You will design and build abstractions that enable product teams to easily introduce new SKUs, run pricing experiments, and convert users to paying customers, ensuring all revenue paths are reliable, observable, and extensible across subscriptions, usage-based billing, and enterprise contracts.

Perplexity is seeking builders to join its highly leveraged engineering team to create innovative products that accelerate human productivity. As an engineer, you will build products and systems that define how AI empowers humans to think, decide, and act. You will ship fast and work across product, infrastructure, and frontier-level advancements in technology, focusing on craftsmanship, ownership, entrepreneurship, scholarship, and partnership. This role is for individuals who identify problems, design solutions, and ship them, acting with urgency and a founder's mindset to deliver for users.

Replit

Replit is seeking a Software Engineer to join their Developer Experience team. This role focuses on accelerating engineering velocity and reducing friction within Replit's development workflows. You will be responsible for stewarding codebases, tooling, and developer workflows, directly impacting every engineer at Replit. The position combines technical depth in a complex codebase with a product mindset to understand how infrastructure decisions affect developer productivity and customer value. You will also collaborate with the AI team to enhance the internal AI platform, which currently generates over 60% of merged PRs, and help shape its future strategy.

Sierra is building a platform to enable companies to create better, more human customer experiences with AI. As a Forward Deployed Infrastructure Engineer, you will be a founding member responsible for the end-to-end lifecycle of customer deployments. You will work directly with enterprise clients to architect, deploy, upgrade, and manage Sierra's AI platform infrastructure, ensuring it meets their specific security, compliance, and operational needs. This role involves defining scalable and repeatable deployment standards, tooling, and processes, and collaborating closely with Engineering, Product, Sales, and Customer Success teams to manage complex customer engagements.

Cartesia is pioneering new AI model architectures, inspired by human learning and interaction. Our mission is to build AI that learns from and interacts with the world. We are seeking a Technical Account Manager to lead the post-sale technical relationship with enterprise customers, guiding them from contract signing through production and ongoing growth. This role is crucial for driving customer success, resolving technical challenges, and expanding product adoption within their accounts.

As a Software Engineer on Applied AI, you will build, deploy, and operate systems that bridge frontier AI research and data delivery. This is a high-ownership, deeply technical role where you will tackle ill-defined problems, prototype rapidly with researchers and customers, and transition systems from early experiments to reliable, scalable production. You will manage projects end-to-end, including requirements gathering, creating data pipelines, and enhancing model-adjacent infrastructure, while collaborating with frontier AI labs and internal teams to deliver impactful applied AI solutions.

Replit

Replit is seeking a Partnerships Lead, GSIs to build and scale relationships with the world's largest systems integrators. This high-impact role sits at the intersection of channel strategy, enterprise go-to-market, and ecosystem development, focusing on turning GSI relationships into a significant revenue channel. You will own how Replit engages with major GSIs, developing programs, partnerships, and co-sell motions. The ideal candidate understands the inner workings of GSIs, including their practice models, incentives, and organizational structures, and can establish the trust and commercial frameworks necessary to position Replit as a key platform in their delivery stack.