Source Job

• Build end-to-end training pipelines: data → training → eval → inference
• Design new model architectures or adapt open-source frontier models
• Fine-tune models using state-of-the-art methods (LoRA/QLoRA, SFT, DPO, distillation)

A1 is a self-funded AI group operating in full stealth, building a new global consumer AI application focused on an important but underexplored use case. They are assembling a small, elite team of ML and engineering builders who want to work on meaningful, high-impact problems.

Shape the future of AI-powered search across all OLX verticals. Lead the design and evolution of OLX’s Search AI Platform, developing LLM- and GenAI-based systems that power discovery and relevance. Mentor and inspire data scientists and ML engineers across OLX’s global hubs, sharing best practices and shaping the future of applied ML at scale.

At OLX, we work together to build a more sustainable world through trade.

• Lead domain-specific model optimization using PEFT (LoRA/QLoRA) and knowledge distillation to balance cost, latency, and reasoning capability.
• Build next-gen Retrieval-Augmented Generation pipelines using hybrid search, cross-encoders, and self-correcting retrieval loops.
• Design and deploy multi-agent systems using frameworks like LangGraph or CrewAI, enabling autonomous task planning and tool-use (Function Calling).

ServiceNow is a global market leader, bringing innovative AI-enhanced technology to over 8,100 customers, including 85% of the Fortune 500®. Their intelligent cloud-based platform seamlessly connects people, systems, and processes to empower organizations to find smarter, faster, and better ways to work.

• Build and maintain gen AI prompts aligned with ad formats and community dynamics.
• Improve the quality and brand safety of model outputs across text, images, and video.
• Partner with Product and Engineering to prioritize improvements and accelerate feature development.

Reddit is a community built on shared interests and trust, home to open conversations and one of the internet’s largest sources of information.

• Design, build, and scale enterprise-grade AI/ML systems that power internal workflows and external-facing AI/ML platforms.
• Develop a production-ready Generative AI and MLOps platform with reusable components used to deploy multiple AI solutions across Natera’s business units.
• Implement cloud-native infrastructure for large-scale model training and serving using Kubernetes, MLflow, Terraform, and AWS-native services

Natera is a global leader in cell-free DNA (cfDNA) testing. They are dedicated to oncology, women’s health, and organ health, aiming to make personalized genetic testing and diagnostics part of the standard of care. The Natera team consists of highly dedicated statisticians, geneticists, doctors, laboratory scientists, business professionals, software engineers and many other professionals from world-class institutions.

• Design agentic systems & ship AI to production: Turn prototypes into resilient, observable services with clear SLAs, rollback/fallback strategies, and cost/latency budgets.
• Build tool‑using LLM “agents” (task planning, function/tool calling, multi‑step workflows, guardrails) for tasks like grant discovery, application drafting, and research assistance.
• Own RAG end‑to-end: Ingest and normalize content, choose chunking/embedding strategies, implement hybrid retrieval, re‑ranking, citations, and grounding.

Instrumentl is a hyper-growth YC-backed startup that provides a SaaS platform to help nonprofits discover, track, and manage grants efficiently. They have over 4,000 nonprofit clients and are cash flow positive, doubling year-over-year, with customers who love them.

• Build effective teams.
• Mentor engineers, coach Team Leads, and encourage others to share knowledge.
• Evaluate, improve, and maintain processes.

Provectus is a company that helps businesses adopt AI technologies. They focus on delivering value and driving innovation through AI.

• Drive fundamental and applied research in AI.
• Build cutting edge Generative AI models, using techniques like Supervised Finetuning (SFT), Reinforcement Learning (RL), prompt improvements and synthetic data generation
• Collaborate closely with product managers and engineers to transform user feedback into requirements for AI systems.

Figma’s platform helps teams bring ideas to life—whether you're brainstorming, creating a prototype, translating designs into code, or iterating with AI.

• Design, refine, and evaluate prompts, context, and system instructions for various product use cases
• Conduct experiments to assess model behavior, accuracy, and cost impact with new or existing prompts
• Continuously improve prompt engineering processes by adopting new techniques and technologies

Applied Systems transforms the insurance industry. They have 40+ years of experience and are building a team ready to learn and deliver innovative software and services.

• Research, Document, Test, and Ideate: Explore the best ways to achieve our customers’ goals using LLMs and other AI tools.
• Master Our Dialogue Platform: Become an expert, answer questions, and train others on prompting both within and outside of our platform.
• Train Our AIs: Utilize prompting, knowledge-base creation, and fine-tuning to enhance our AI capabilities.

1mind is a platform that deploys multimodal Superhumans for revenue teams, combining a face, a voice, and a GTM brain. The company has a remote-first, fast-moving culture with ownership, autonomy, and impact from day one.

• Architect, build, and deploy LLM-powered applications that augment and automate key workflows.
• Design autonomous AI systems that can execute technical analysis, testing, troubleshooting, and decision-making at scale.
• Develop AI-driven tools that create measurable business impact — improving efficiency, accelerating innovation, and driving revenue growth.

Sierra Studio connects talented Brazilian professionals with exciting career opportunities in a highly-vetted small community of growing companies in the US. They specialize in enabling merchants, consumers, and partners to operate with flexibility, intelligence, and trust with over 250 people.

• Design, optimize, and version prompts for production voice and chat LLM applications.
• Architect and orchestrate multi-agent systems for complex conversations.
• Build automated testing and validation frameworks for LLM outputs.

Tuotempo transforms healthcare experiences through intelligent digital solutions and is a trusted patient engagement platform powering some of Europe and Latin America's leading healthcare institutions. They have a remote-first culture with vibrant hubs in Bologna or Barcelona.

As a Principal Decision Scientist, you will define high-level business objectives directly with clients, then develop and execute the project plan to meet those objectives. You will provide technical leadership to guide development work across teams while also owning and delivering specific technical components yourself. You will design and develop feature engineering pipelines, build ML & AI infrastructure, deploy models, and orchestrate advanced analytical insights.

Aimpoint Digital is a premier analytics consulting firm with a mission to drive business value for clients through expertise in data strategy, data analytics, decision sciences

• Drive the development and implementation of cutting-edge machine learning algorithms.
• Design system and model architectures, conduct rigorous experimentation and model evaluations.
• Collaborate with product, engineering, and analytics teams to build AI functionalities.

At Atlassian, we're motivated by a common goal: to unleash the potential of every team.

• Architect and lead the development of agentic workflows and fine-tuned models for the automation of new and existing security operations processes.
• Establish ML and data pipelines for the training and deployment of fine-tuned generative AI and machine learning models.
• Design scalable systems to unify and correlate data across heterogeneous sources using rule-based, probabilistic, and ML-based approaches.

Jobgether uses an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Their system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company.

• Design cloud-native architectures for agentic AI workloads using Kubernetes/EKS, Terraform, Docker, serverless APIs, AWS Batch, and async orchestration frameworks.
• Define agentic system patterns using LangChain, LangGraph, Autogen, LlamaIndex, Pinecone, and other multi-agent frameworks; ensure consistency of prompt/tool design.
• Architect vector database, RAG, embeddings pipelines, and model-serving endpoints (LLM/SLM) with strong emphasis on scalability and latency management.

AHEAD builds platforms for digital business by weaving together advances in cloud infrastructure, automation and analytics, and software delivery, helping enterprises deliver on the promise of digital transformation. They prioritize creating a culture of belonging, where all perspectives and voices are represented, valued, respected, and heard.

Continuously improve the performance and scalability of ML models. Build and deploy models from inception to live in production pipelines. Advocate for code and process improvements across your team, and help to define best practices based on personal industry experience and research.

BenchSci's mission is to exponentially increase the speed and quality of life-saving research and development.

• Architect and implement state-of-the-art pipelines for ad creative generation.
• Build editing capabilities allowing advertisers to smart-crop, inpaint, outpaint, resize, and style-transfer assets.
• Adapt large vision-language models to understand "winning" ad aesthetics.

Reddit is a community of communities built on shared interests and open conversations. It is one of the internet’s largest sources of information with 100,000+ active communities and approximately 116 million daily active unique visitors.

• Architect, develop, and deploy multimodal generative AI systems.
• Lead implementation of vision architectures and multimodal embedding frameworks.
• Design and optimize systems integrating LLMs with visual and audio modalities.

Truelogic is a leading provider of nearshore staff augmentation services, delivering top-tier technology solutions to companies of all sizes. Their team of 600+ highly skilled tech professionals, based in Latin America, partners with U.S. companies on impactful projects, valuing expertise and aspirations.

Lead the architecture, design, and implementation of enterprise-grade Agentic AI solutions. Create modular, interoperable, and future-ready AI architectures that integrate seamlessly with existing enterprise systems. Establish architectural standards, design patterns, and reusable components for AI/ML workloads.

Quantiphi is an award-winning Applied AI and Big Data software and services company, driven by a deep desire to solve transformational problems at the heart of businesses.