Freelance Data Scientist Jobs

Design and maintain the data architecture that connects organizational data assets, services, and flows. This contractor role provides architectural direction for new initiatives…

Translate commercial and customer operations needs into practical Salesforce and related technology solutions, working between business stakeholders and IT. The role spans require…

Design and build protocol features for a decentralized finance platform, bringing financial systems expertise to blockchain infrastructure. The work spans trading components, on-c…

Build and improve the on-chain systems that support decentralized trading and financial products. You will take features from requirements and design through implementation, testi…

Own the vision and growth of an enterprise platform for building, deploying, and governing AI agents. You will guide the platform from early pilots toward broader organizational u…

Build and support geospatial tools that help teams visualize transportation and logistics operations. Working with an experienced technical team, you will develop mapping applicat…

Use product data and controlled experiments to help a growth team make better decisions. The work spans defining meaningful measures, planning and analyzing A/B tests, and underst…

Build and maintain software in Go for a range of digital product projects, translating business needs into reliable applications. The work spans technical design, implementation,…

Provide systems analysis and integration engineering for passenger screening capabilities. The work connects equipment, software, networks, interfaces, and operational processes,…

Lead architecture and integration for high-performance enterprise web experiences in a freelance role based in Colombia. You’ll work with product, user experience, and strategy pa…

Design and guide an enterprise data architecture spanning on-premises systems and a growing cloud footprint. Working across IT, security, infrastructure, applications, and busines…

Lead a part-time research engagement assessing whether care management programs are associated with improved patient outcomes. The work centers on rigorous causal analysis of heal…

Lead the design and delivery of client-facing reporting and analytics for life sciences programs. The role turns commercial, medical, operational, healthcare, and client data into…

Lead incident response and problem management for digital banking services, helping restore service quickly and reduce the chance of repeat disruptions. The role combines technica…

Keep enterprise technology services reliable by monitoring infrastructure, investigating alerts, and responding to operational incidents. The role spans systems, applications, dat…

Evaluate and improve coding agents by giving them realistic software engineering tasks and examining how they perform. You will work through problems in a codebase you know, ident…

Set strategy and lead delivery for a broad corporate technology portfolio, initially focused on legal technology and enterprise collaboration. The role connects business prioritie…

Lead the strategy and lifecycle of a portfolio spanning industrial software, control systems, digital platforms, upgrades, and related services. The role connects customer needs a…

Set the architecture and practical foundations for enterprise AI across research and development, commercial, and corporate functions. This is a strategic and hands-on leadership…

Help improve an AI system’s Icelandic speech and language capabilities by reviewing audio, localizing text, and contributing linguistic expertise. The work spans pronunciation, na…

Help improve an AI system’s Amharic speech and language capabilities by reviewing audio, localizing text, and contributing linguistic expertise. The work spans pronunciation, natu…

This staff-level application security role leads security practices for AI features and agent-based systems while remaining hands-on in design and delivery. You will set review st…

Use your data science expertise to assess and improve the quality of AI-generated analysis. You’ll test a language model across statistical, machine learning, and data engineering…

Apply software development expertise and fluency in Russian to evaluate and improve AI-generated technical responses. You’ll test the model on coding tasks and engineering concept…

Configure and support SAP Customer Activity Repository (CAR) data processes that bring point-of-sale and e-commerce activity into SAP systems and ensure transactions are audited a…

Evaluate and improve advanced language models by applying software engineering expertise and fluency in French. The work focuses on testing technical reasoning in realistic coding…

Tackle applied machine learning challenges and help evaluate and improve AI systems through model testing, benchmark development, and structured feedback. The work spans experimen…

Assess and strengthen language models’ ability to reason about computer and information systems. The work applies systems and IT expertise to practical scenarios and architecture…

Help improve advanced language models by testing their software engineering knowledge in German. You will use coding expertise to assess technical correctness and reasoning, evalu…

Use software engineering expertise and Latin American Spanish fluency to evaluate and improve AI responses to coding tasks. You’ll examine technical problem solving in Spanish, ch…

Evaluate and improve AI performance on Python software engineering problems. You will test model responses across programming concepts and practical engineering scenarios, check t…

Use data to guide decisions across product, customer, and go-to-market teams for an enterprise AI coaching platform. You will investigate how people use the product, identify oper…

Set the analytics and decisioning strategy for financial services clients, translating customer, first-party, and call center data into choices that support measurable growth. The…

Own identity and access design for a vendor portal built on SAP Business Technology Platform (BTP). The work covers secure onboarding and sign-in for external business users, fine…

Lead complex data and AI consulting engagements built around Microsoft technologies, while serving as a senior technical authority across delivery and presales. The role combines…

Help improve AI systems by creating and evaluating challenging machine learning and numerical computing tasks. You will develop reference solutions, assess model-generated code, a…

Provide senior programming leadership for clinical development studies, primarily in solid tumor oncology. The work spans clinical trial data standards, statistical analyses, and…

Use data engineering expertise to create and assess tasks that help improve AI systems’ ability to work with data. This is flexible, part-time remote contract work focused on real…

Lead the modernization of a digital credit application platform, extracting core decision logic from a legacy monolith into cloud-based services. The role combines architecture an…

Help improve cybersecurity authorization work by developing automation and AI-enabled tools for Risk Management Framework (RMF) and Assessment & Authorization workflows. You’ll wo…

Evaluate AI-generated research in computer science and computational physics through rigorous technical review. In this flexible, part-time remote contract role, you will set dema…

Develop and deliver AI and machine-learning solutions across areas such as computer vision, large language models, and data science. The work combines technical implementation wit…

Carry out hands-on functional testing for a large SAP-based supply chain and transportation platform. You will turn requirements into test scenarios, exercise workflows and integr…

Contribute to the development and modernization of data-focused enterprise software used in a federal agency setting. As an early-career developer, you will work with experienced…

Review business data and documents for accuracy as part-time, remote contract work supporting AI evaluation. The work combines careful comparison against assignment criteria with…

Shape the direction of workforce management solutions covering workforce planning, shift scheduling, time compliance, and labor cost control. This role connects product strategy w…

Create and evaluate challenging machine-learning engineering tasks that help assess AI systems working with model development and operations. This part-time contract work calls fo…

Own software features from technical kickoff through release, translating validated product problems, prototypes, and specifications into architecture, implementation plans, and v…