Fine-Tuning Jobs

Baseten is seeking an AI Engineer to join their Training Product team. This role involves building AI-driven product features for customers training frontier models and enhancing Baseten's internal AI capabilities by transforming manual workflows into agentic ones. You will collaborate directly with research engineers, taking concepts from internal research to customer-ready products. This is a hands-on position offering significant autonomy, where you will identify key problems, develop reliable AI systems with appropriate harnesses and guardrails, and take ownership of the outcomes. The ideal candidate has a proven track record of shipping agents and is eager to make that their primary focus.

Fireworks is seeking a Product Manager to focus on their AI training platform. In this role, you will be instrumental in shaping the strategy, defining product specifications, and directly engaging with customers to understand their real-world tuning challenges. You will collaborate closely with the training, research, and inference teams to deliver impactful solutions that enhance customer AI development. Example initiatives include driving growth in self-serve training usage and improving the speed and ease of training for enterprise clients.

Clay is seeking a Machine Learning Engineer to join its centralized Learning Team. This team is responsible for building the intelligence engine that powers learning loops across the entire product. You will be instrumental in shipping intelligence features that learn from customer data and behavior, including ranking and recommendation systems, new AI products, and the underlying ML platform. This role offers a unique opportunity to shape the architecture and set standards for a new, critical team at a rapidly growing company.

LangChain is seeking an experienced Research Engineer to join the LangSmith Engine team. This role focuses on enhancing the capabilities and efficiency of a proactive agent engineer that analyzes production traces, identifies failures, and implements fixes to prevent recurrence. You will study agent failures, build benchmarks, run experiments to improve performance, and translate successful ideas into production. This involves optimizing prompting, agent harnesses, model selection, fine-tuning, and post-training custom models, with a strong emphasis on measurable improvements to the overall agent. The role also requires an understanding of production engineering and system-level trade-offs, including cost, latency, reliability, and scalability, working closely with production engineers to ensure reliable real-world performance.

Mercor is a leading AI data company organizing human intelligence to power the AI economy. We are building the layer between human expertise and frontier models, with millions of domain experts on our platform training AI models. This role focuses on code data, specifically owning the architecture and algorithms for searching across code tasks. The goal is to find similar tasks, route them to the right models, and translate natural language questions into precise retrieval queries. This is a hands-on technical leadership position where you will design and build retrieval systems, manage trade-offs for speed and cost at scale, and continuously evolve these systems as state-of-the-art code models advance. You will also set technical direction, mentor engineers, and raise the bar for engineering practices within the organization.

Fiddler is building trust into AI, especially with the rise of Generative AI and Agents. Our platform helps organizations deploy trustworthy and transparent AI solutions by monitoring, evaluating, securing, analyzing, and improving AI applications. We partner with AI-first organizations to establish responsible AI practices, enabling engineering teams and business stakeholders to understand AI outcomes. Joining Fiddler means making an impact by ensuring AI applications at production scale have operational transparency and security. This is an opportunity to be a trailblazer in the rapidly innovating AI and ML industry, contributing to AI Observability.

$220k - $260k

OpenAI

OpenAI is seeking Machine Learning Engineers to join its API Multicloud team, focusing on extending OpenAI's API platform into strategic cloud environments, starting with AWS. This role involves building and improving AI systems that help strategic partners adapt OpenAI models for cloud-native use cases. You will operate at the intersection of production ML systems, developer platforms, model behavior, and large-scale infrastructure, spanning post-training workflows, evaluation, data pipelines, and API/infrastructure integration. The ideal candidate will enjoy working with external technical partners, diagnosing issues, and translating learnings into platform improvements, collaborating closely with Research, Applied, Safety Systems, and infrastructure teams.

Inflection AI

Inflection AI is seeking a hands-on technical leader to own the model-improvement loop, from data and training through evaluations, post-training, release criteria, and production feedback. This role sits at the intersection of research, production engineering, and model release, with the goal of shipping measurably better models for users. The ideal candidate will have prior experience leading significant model training or post-training initiatives and can make informed tradeoffs across data, compute, architecture, and quality to achieve a clear technical roadmap.

$400k - $550k

Lambda, a leader in AI cloud infrastructure, is seeking a Senior Solution Engineer to join their growing team. This role is crucial in enabling customers to achieve their business goals with AI infrastructure by partnering with leading AI researchers and enterprise engineering teams. The ideal candidate will design, scale, and optimize high-performance GPU cloud solutions, turning complex compute challenges into seamless, production-ready AI infrastructure. This position requires a customer-first mindset and technical mastery to drive growth and customer success.

OpenAI

As a Researcher for cybersecurity risks, you will help design and implement an end-to-end mitigation stack to reduce severe cyber misuse across OpenAI’s products. This role requires strong technical depth and close cross-functional collaboration to ensure safeguards are enforceable, scalable, and effective. You’ll contribute directly to building protections that remain robust as products, model capabilities, and attacker behaviors evolve. Models are becoming increasingly capable—moving from tools that assist humans to agents that can plan, execute, and adapt in the real world. As we push toward AGI, cybersecurity becomes one of the most important and urgent frontiers: the same systems that can accelerate productivity can also accelerate exploitation.

Fireworks is seeking a product-minded engineer to join their team and own the surfaces that make their AI platform, Nexus, a reality. Nexus is a drop-in platform designed to help engineering organizations reduce AI spend by routing workloads to high-performing open models. This role involves owning features end-to-end, from understanding problems and designing solutions to shipping and observing developer usage. You will be responsible for the intelligent router, cost-observability and enterprise-control layers, integrations, and core platform components like inference APIs and fine-tuning workflows. This is a high-autonomy individual contributor role on a small team, offering significant leverage and direct impact on a product that ships to production at scale.

Runpod is seeking a Technical Support Analyst (L2) to provide advanced technical assistance and resolve complex customer issues. This role is crucial for supporting customers on the AI Developer Cloud platform, which is used by over a million developers for AI experimentation, training, fine-tuning, and deployment. The ideal candidate thrives in a dynamic, remote-first environment and is passionate about delivering exceptional customer service. This position requires weekend availability as per business needs.

$70k - $93k

Runpod is seeking a Technical Support Analyst (L2) to provide advanced technical assistance and resolve complex customer issues. This role is crucial for supporting customers on the Runpod AI Developer Cloud platform, which is used by over a million developers for AI experimentation, training, fine-tuning, and deployment. The ideal candidate thrives in a dynamic, remote-first environment and is passionate about delivering exceptional customer service. This position requires availability on weekends and the candidate must be located in Ireland, the United Kingdom, Spain, or Poland.

€70k - €83k

Luma is seeking a Commercial and IP Counsel to join our Legal team and support the company's growth as we develop and release advanced multimodal AI models. Reporting to the General Counsel, this role will manage commercial contracts for API, enterprise, and compute/infrastructure deals, and lead the intellectual property strategy, focusing on the unique IP and data-rights challenges of generative AI systems. The ideal candidate will gain a deep understanding of our model training and deployment processes, including data sourcing, licensing, model architecture, fine-tuning, and inference infrastructure, to proactively identify and address legal issues. You will collaborate daily with research, applied ML, data, product, and infrastructure teams, making critical judgment calls in a rapidly evolving legal and regulatory environment.

Luma is seeking a highly autonomous and AI-fluent Product Manager to build enterprise products from the ground up, transforming frontier multimodal capabilities into scalable solutions for marketing, advertising, and entertainment customers. This role requires a general manager mindset, focusing on P&L-driven decisions and defining product opportunities rather than executing pre-defined directives. You will spend significant time embedded with forward-deployed teams working directly with customers to build agentic products, not traditional SaaS. If you thrive in high-ambiguity environments and possess strong product sense, this opportunity is for you.

$30k - $40k

As an Applied Machine Learning Engineer, you will serve as a vital bridge between cutting-edge AI research and practical, real-world applications. Your work will focus on developing, fine-tuning, and operationalizing machine learning models that drive business value and enhance user experiences. This is a hands-on engineering role that combines deep technical expertise with a strong customer focus to deliver scalable AI solutions.

Fireworks is seeking an AI Field Engineer to join their team in Singapore. This role is at the forefront of technical engagement, embedding with key customers and partners to transform complex AI challenges into production-ready systems. You will operate at the nexus of engineering, product development, and customer delivery, actively building proofs-of-concept (POCs), minimum viable products (MVPs), and production integrations. Simultaneously, you will engage in high-level discussions regarding architecture, strategy, and business impact. The position requires a blend of hands-on coding, performance benchmarking, debugging, and deployment architecture, alongside leading customer discovery, aligning stakeholders, and translating customer needs into product enhancements.

Fireworks is seeking an AI Field Engineer to join our team in EMEA. This role is at the forefront of our technical engagement with ambitious customers and technology partners, focusing on transforming complex AI challenges into production-ready systems. You will operate at the intersection of engineering, product, and customer delivery, actively building Proofs of Concepts (POCs), Minimum Viable Products (MVPs), and production integrations. This position requires a blend of hands-on technical execution and the ability to engage in executive-level discussions regarding architecture, strategy, and business outcomes. The role emphasizes building strong relationships and trust through in-person interactions with clients, particularly within large organizations and digital-native companies adopting GenAI.

Crusoe is seeking a Senior Product Manager for Orchestration to own major product areas within their Managed Orchestration portfolio. This role involves end-to-end ownership of Kubernetes cluster lifecycle, control-plane capabilities, node health, managed add-ons, workload scheduling, Slurm on Kubernetes, and customer-facing APIs for large-scale AI infrastructure. It's a deeply technical and hands-on position requiring close collaboration with engineering to translate complex infrastructure challenges into clear, durable product designs, focusing on detailed behavior, edge cases, failure modes, and thoughtful trade-offs to ensure product quality and customer satisfaction.

$170k - $205k

Cohere

Cohere is seeking an experienced Program Manager to join our customer-facing Program Management team, focusing on UK public sector and defence accounts. This role requires a deep understanding of technical program delivery, the complexities of frontier AI models, and the unique needs of government and defence organizations. You will act as the crucial link between Cohere's advanced AI capabilities and the specific requirements of UK Government and defence clients, navigating intricate procurement processes, stringent security demands, data sovereignty concerns, and regulatory compliance to ensure successful deployment and scaling of our AI solutions. You will collaborate with various internal teams, serving as the technical program lead and trusted advisor for our most sensitive and high-impact government engagements.

$12k - $18k