Upwork

Upwork is a freelancing platform connecting clients with independent professionals. It offers project-based work, time-tracking, and secure payments.

52

Open Roles

11

Locations

10

Domains

Open Positions

52 of 52 roles

Contract: Senior AI Engineer

Remote-Latin AmericaSeniorContract

Python CI/CD LLM Large language models AI agents

Lead AI Engineer

Lisbon, PortugalLeadFull-Time

Python SQL Snowflake Machine learning LLM Large language models Prompt engineering AI agents+1

Lead AI Engineer

Palo Alto, California, United StatesLeadFull-Time

Python SQL Snowflake Machine learning LLM Large language models Prompt engineering AI agents+1

Lead Machine Learning Engineer/Scientist - Algorithms & Research

Toronto, Ontario, CanadaLeadFull-Time

Machine learning LLM A/B testing RAG Large language models Embeddings Retrieval-augmented generation Tool calling

Sr AI Research Scientist, AI Evaluation and Reliability

Toronto, Ontario, CanadaSeniorFull-Time

Python Machine learning Deep learning PyTorch A/B testing Mentoring Ownership

Sr Lead AI Research Scientist, AI Foundations

Toronto, Ontario, CanadaLeadFull-Time

Python Machine learning Deep learning PyTorch LLM Problem solving Mentoring Code review+4

VP, Head of Analytics, Data Science & Pricing

RemoteDirectorFull-Time

Machine learning A/B testing

Senior Lead Machine Learning Engineer, Agentic AI

Lisbon, PortugalLeadFull-Time

Python JavaScript Java Docker CI/CD Machine learning LLM Security+7

Senior Applied Machine Learning Engineer - Search & Recommendations

Toronto, Ontario, CanadaSeniorFull-Time

Python SQL Machine learning TensorFlow PyTorch NLP RAG Transformers+2

Lead Machine Learning Engineer - Search & Recommendations

Toronto, Ontario, CanadaLeadFull-Time

Machine learning LLM A/B testing Ownership Large language models

Lead Machine Learning Engineer - Search & Recommendations

RemoteLeadFull-Time

Machine learning Ownership

Sr Lead Machine Learning Engineer

RemoteLeadFull-Time

Python SQL Machine learning LLM A/B testing Ownership Large language models AI agents

Lead Machine Learning Engineer/Scientist, Algorithms & Research

Lisbon, PortugalLeadFull-Time

Machine learning LLM A/B testing RAG Large language models Embeddings Retrieval-augmented generation Tool calling

Senior Lead Machine Learning Engineer, Agentic AI

Toronto, Ontario, CanadaLeadFull-Time

Python JavaScript Java Docker CI/CD Machine learning LLM Security+7

Senior Lead Machine Learning Engineer, Agentic AI

Toronto, Ontario, CanadaLeadFull-Time

Python JavaScript Java Docker CI/CD Machine learning LLM Security+6

Sr Lead AI Research Scientist, AI Foundations

Lisbon, PortugalLeadFull-Time

Python Machine learning Deep learning PyTorch LLM Problem solving Mentoring Code review+4

Director, M&A Integration

Palo Alto, California, United StatesDirectorFull-Time

Machine learning

General Upwork Application

RemoteMid-levelFull-Time

Senior Brand Manager

Toronto, Ontario, CanadaManagerFull-Time

Machine learning Ownership

Sr Director, Corporate Development

Palo Alto, California, United States; RemoteDirectorFull-Time

Machine learning Problem solving Documentation

Tax Manager, Indirect Tax

Lisbon, Portugal; Toronto, Ontario, CanadaManagerFull-Time

Machine learning LLM Documentation Large language models

Sr Lead, Pricing Strategy Manager

RemoteManagerFull-Time

Machine learning

Senior Director of Product, Reputation

RemoteDirectorFull-Time

Machine learning A/B testing Ownership

Payroll Manager

Lisbon, PortugalManagerFull-Time

Machine learning Documentation

Tax Manager, Indirect Tax

Remote-North AmericaManagerFull-Time

Machine learning LLM Documentation Large language models

Senior Social Media Manager

Toronto, Ontario, CanadaManagerFull-Time

Machine learning A/B testing Documentation Ownership

FP&A Manager, R&D

Toronto, Ontario, CanadaManagerFull-Time

Machine learning Agile Ownership

VP, Payments

RemoteDirectorFull-Time

Rails Machine learning Mentoring Ownership

Upwork is hiring in Lisbon, Portugal

Lisbon, PortugalMid-levelFull-Time

Machine learning

Corporate Strategy Manager

Palo Alto, California, United StatesManagerFull-Time

Director of Engineering, Search, Recommendations, Discovery and Distribution

Toronto, Ontario, CanadaDirectorFull-Time

Machine learning Mentoring Ownership

Contract: Senior Database Automation Engineer (LATAM)

Remote-Latin AmericaSeniorContract

Python Ruby SQL PostgreSQL MySQL MongoDB DynamoDB AWS+6

Contract: Senior Software Engineer - Unified Developer Environment (UDE)

Remote-EuropeSeniorContract

Python Java Go Shell scripting AWS Kubernetes Docker CI/CD+2

Contract: Senior Database Automation Engineer (APAC)

Remote-Asia PacificSeniorContract

Python Ruby SQL PostgreSQL MySQL MongoDB DynamoDB AWS+6

Contract: Systems Engineer

Remote-Latin AmericaMid-levelContract

Python AWS GCP Azure Terraform Ansible Jira Confluence+3

Contract: Senior Data Engineer

Remote-Latin AmericaSeniorContract

Python Rust Snowflake Kubernetes CI/CD Machine learning Security Encryption+3

Contract: Principal Kubernetes Platform Engineer

Remote-Latin AmericaStaffContract

Python Java Shell scripting AWS Kubernetes Terraform CI/CD EC2+5

Senior Financial Analyst, Corporate FP&A

Toronto, Ontario, CanadaSeniorFull-Time

Machine learning Problem solving Ownership

Senior Financial Analyst, Corporate FP&A (Forecasting)

Toronto, Ontario, CanadaSeniorFull-Time

Machine learning Documentation Ownership

Marketplace Account Executive

Austin, Texas, United States; ChicagoMid-levelFull-Time

Machine learning

Senior Workday Analyst

Toronto, Ontario, CanadaSeniorFull-Time

Machine learning Mentoring

Senior Functional Workday Analyst

Lisbon, PortugalSeniorFull-Time

Machine learning Mentoring

Technical Lead Recruiter

Lisbon, PortugalLeadFull-Time

Machine learning Documentation

Principal HR Business Partner

Toronto, Ontario, CanadaStaffFull-Time

Machine learning Mentoring

Marketplace Customer Success Manager

Austin, Texas, United States; ChicagoManagerFull-Time

Machine learning

Sr Customer Success Manager

Austin, Texas, United States; ChicagoManagerFull-Time

Machine learning

Contract: Staff Full-Stack Engineer

Remote-Latin AmericaStaffContract

Python JavaScript Java React Vue Machine learning Ownership

Contract: Senior Backend Engineer - Snowflake Data Platform

Remote-Latin AmericaSeniorContract

Python JavaScript SQL Snowflake AWS Data pipelines Airflow