Contract: Senior Machine Learning Engineer
hace 4 semanas
Contract: Senior Machine Learning Engineer Join to apply for the Contract: Senior Machine Learning Engineer role at Upwork . This engagement is through Upwork’s Hybrid Workforce Solutions (HWS) Team, a global group of professionals supporting Upwork’s business. Work/Project Scope: As a Machine Learning Engineer, you will play a crucial role in developing and maintaining discriminative and generative AI models. You will design, train/fine‑tune, and evaluate information retrieval systems capable of handling both structured and unstructured databases. Leveraging historical context and diverse data, you will create innovative models to drive significant business impact. Key Responsibilities: Train/fine‑tune large language models for query understanding and tool calling. Develop and utilize vector databases and/or knowledge graphs for information retrieval, orchestrating retrieval using databases in the loop. Investigate model explainability to enhance reliability and reduce hallucination in end‑to‑end Uma use cases. Collaborate cross‑functionally with machine learning engineers to take models from research to production. Stay current with the latest advancements in Gen‑AI and integrate relevant innovations into our systems. Publish paper in a top‑tier conference; mentor junior engineers, conduct code reviews, and enforce engineering best practices. Deliver high‑quality solutions that improve overall efficiency. Required Skills and Qualifications: Deep Learning/Artificial Intelligence (AI): 5+ years of hands‑on experience designing, training, and deploying deep learning models, specifically in NLP and Information Retrieval. Large Language Model (LLM) Fine‑Tuning/Post‑Training: Proven experience in fine‑tuning or pre‑training LLMs (e.g., Llama, GPT family, Mistral) for specific downstream tasks. Pytorch: Expert‑level proficiency in PyTorch for building, training, and optimizing complex deep learning models. Function Calling/Tool Calling/Structured Decoding: Direct experience developing and implementing models capable of structured output generation (JSON, YAML) and tool/function calling. Agentic Workflow Development: Experience designing, implementing, and orchestrating complex AI Agents or multi‑step reasoning workflows using LLMs. Reinforcement Learning (RL) / RLHF: Practical knowledge of applying RL principles, especially RLHF, to align LLMs with human preferences and improve safety. Upwork is proudly committed to fostering a diverse and inclusive workforce. We never discriminate based on race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical condition), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. Additionally, a criminal background check may be run on a qualified candidate after a conditional offer is made, in accordance with applicable law. Please note that due to the high volume of candidates, we will only be able to get back to those applicants who match the requirements of the position. #J-18808-Ljbffr
-
Contractor: Senior Machine Learning Engineering Services
hace 2 semanas
, , Argentina Newsela A tiempo completoWe are seeking to hire a skilled Contract Sr. Machine Learning Engineer based out of Argentina or Mexico. This role will focus on developing machine learning algorithms, data analysis, and optimizing data pipelines. The ideal contractor should have strong expertise in developing machine learning algorithms, natural language processing (NLP), and experience...
-
Senior Machine Learning Engineer, Recommendation Systems
hace 1 semana
, , Argentina Launch Potato A tiempo completoSenior Machine Learning Engineer, Recommendation Systems Join to apply for the Senior Machine Learning Engineer, Recommendation Systems role at Launch Potato WHO ARE WE? Launch Potato is a profitable digital media company that reaches over 30M+ monthly visitors through brands such as FinanceBuzz, All About Cookies, and OnlyInYourState. As the Discovery and...
-
Machine Learning Engineer III
hace 4 días
Argentina S3 Int A tiempo completoJob DescriptionMachine Learning Engineer III – Job DescriptionSummaryThe Machine Learning Engineer is responsible for designing, developing, and optimizing machine learning models and systems. The role involves working with data science prototypes, selecting suitable algorithms, and ensuring high-quality model performance through testing and...
-
Machine Learning Engineer
hace 2 semanas
, , Argentina Counterpart A tiempo completoMachine Learning Engineer (Contract) Location: Argentina, Brazil, Colombia, Chile, Mexico, Dominican Republic Job Description Counterpart is a modern management & professional liability insurance platform for the 21st century workplace. We offer products and services to help companies align the risks and incentives of creating great organizations. Our...
-
Contract: Senior Machine Learning Engineer
hace 2 semanas
, , Argentina Upwork A tiempo completoUpwork ($UPWK) is the world’s work marketplace. We serve everyone from one-person startups to over 30% of the Fortune 100 with a powerful, trust-driven platform that enables companies and talent to work together in new ways that unlock their potential. Last year, more than $3.3 billion of work was done through Upwork by skilled professionals who are...
-
Senior Machine Learning Engineer
hace 5 horas
, , Argentina EPAM Systems A tiempo completoWe are seeking a Senior Machine Learning Engineer focused on AI Engineering to join our team working on the GenAI project. You will design and maintain scalable backend systems powering LLM-driven applications using OpenAI APIs, ensuring high performance and reliability. Join us to build cutting‑edge AI solutions and advance your career in a dynamic...
-
Remote - Argentina; Brazil; Mexico; Colombia; Chile; Costa Rica Newsela A tiempo completoWe are seeking to hire a skilled long term Contractor for Senior-level Machine Learning Engineer based out of Brazil, Colombia, Chile, Costa Rica, Argentina, Mexico. This role will focus on developing machine learning algorithms, data analysis, and optimizing data pipelines. The ideal contractor should have strong expertise in developing machine learning...
-
Chief Machine Learning Engineer
hace 5 horas
, , Argentina EPAM Systems A tiempo completoChief Machine Learning Engineer – AI Engineering We are looking for a Chief Machine Learning Engineer specializing in AI Engineering to drive innovation in our GenAI project. In this role, you will architect and sustain high-performing backend systems that leverage OpenAI APIs and large language models, ensuring scalability and reliability. Join us to lead...
-
Senior Machine Learning Engineer
hace 1 semana
, , Argentina Launch Potato A tiempo completoJoin to apply for the Senior Machine Learning Engineer role at Launch Potato WHO ARE WE? Launch Potato is a profitable digital media company that reaches over 30M+ monthly visitors through brands such as FinanceBuzz, All About Cookies, and OnlyInYourState.As The Discovery and Conversion Company, our mission is to connect consumers with the world’s leading...
-
Machine Learning Engineer
hace 4 semanas
, , Argentina Mutt Data A tiempo completoJoin Our Data Products and Machine Learning Development Remote Startup! Mutt Data is a dynamic startup committed to crafting innovative systems using cutting-edge Big Data and Machine Learning technologies. We’re looking for a Machine Learning Engineer to help take our expertise to the next level. If you consider yourself a data nerd like us, we’d love...
