Title: Principal AI Architect/AI Lead Engineer Location: Chicago United States Job Description: We are seeking an experienced AI Architect/Engineer for a full time/direct hire position with our client in Chicago, IL. This is hybrid, onsite 2-3 days per week. - C2C and sponsorship are not available for this position* Salary range: $220-$280k AI/ML Engineer - Model Tuning & Agentic Systems We are seeking a highly skilled AI/ML Engineer with deep, hands-on experience building, tuning, and deploying advanced AI models in production environments. This role focuses on operationalizing LLMs, SLMs, and custom models at scale, and designing AI systems capable of automating complex workforce decision-making using agentic AI frameworks. Model Development & Deployment - Build, fine‑tune, and deploy LLMs, SLMs, and custom AI models at scale. - Perform model optimization, evaluation, and continuous improvement across both large and small architectures. - Own end-to-end design, development, and deployment of AI-driven products and workflows. Technical Execution - Write production-grade code (primarily Python) to implement AI pipelines, tools, and systems. - Apply agentic AI design patterns to automate workforce decision-making, replicating manager-level decisions at scale. - Integrate new models and tune existing ones, collaborating closely with the technical and product teams. Performance & Reliability - Drive measurable improvements in model performance and production outcomes. - Establish performance metrics, run evaluations, and optimize for accuracy, speed, and cost efficiency. - Ensure reliability, scalability, and maintainability of AI systems in production. Customer & Stakeholder Engagement - Support customer adoption by clearly explaining AI functionality, performance, and implementation approaches. - Guide customers through the AI integration journey, ensuring transparency and confidence at every step. Required Technical Expertise - Proven, hands-on production experience deploying real AI/ML systems (not theoretical or buzzword-driven). - Strong capability in: - Tuning of LLMs and SLMs - Running and scaling models in production - Model performance measurement, optimization, and evaluation - Solid foundation in AI/ML architecture and DevOps principles. Platform Experience - Proficiency with the AWS cloud stack. - Familiarity with Microsoft AI tools (preferred but not required). AI System Design - Demonstrated success building reasoning-based, autonomous, or agentic AI solutions. - Ability to design AI systems that automate complex decision-making logic at scale. MUST HAVE: - Hands-on expertise in tuning AI models-especially LLMs and SLMs. - Experience running model tuning workflows at production scale. - Strong understanding of model performance outcomes and optimization techniques. Equal Opportunity Employer/Veterans/Disabled Benefit offerings may include medical, dental, vision, life insurance, and paid leave required by Federal, State, or local law, as well as Holiday pay where applicable. Pay Details: $220,000.00 to $280,000.00 per year Equal Opportunity Employer/Veterans/Disabled

Project Overview We are seeking detail-oriented freelance AI Content Evaluators to support a high-impact data annotation project. In this role, you will review content and assess its alignment with provided guidelines. This involves evaluating different types of content and applying structured criteria to ensure consistency and quality across annotations. Full scope and task details will be covered during onboarding. This is an opportunity to contribute to a project that directly supports content quality and user experience at a global scale. Project Details - Location: Remote - Target Language: Farsi - Team: Welo Data – AI Services - Engagement Type: Freelance – Remote - Start Date: Immediate - Duration: 2–3 weeks minimum - Availability: Part-time - Pay Rate: Based on tasks (approximately 9 USD per hour) Responsibilities - Review content based on defined guidelines - Evaluate and annotate different types of content using structured criteria - Apply consistent judgment to ensure annotation quality and accuracy - Follow project guidelines and adapt to updates as needed - Complete tasks within agreed timelines on a flexible, part-time schedule - Participate in onboarding and calibration sessions Qualifications - Native-level proficiency in the target language (C2 or equivalent), with strong command of grammar, fluency, and regional usage - Professional experience in localization QA, translation/revision, linguistic tasks, or data annotation for AI/ML systems is preferred - Strong analytical skills and ability to follow structured guidelines and make consistent decisions - Fluency in English to understand instructions and communicate basic reasoning when needed - Strong attention to detail and ability to maintain consistency across tasks - Comfortable working with evolving guidelines in a fast-paced environment - Familiarity with digital content platforms (music, podcasts, media) is a plus Requirements - Availability to commit to the project duration and expected workload - Reliable internet connection and access to a personal computer - Ability to work as an independent freelance contractor in the target country

Project Overview We are seeking detail-oriented freelance AI Content Evaluators to support a high-impact data annotation project. In this role, you will review content and assess its alignment with provided guidelines. This involves evaluating different types of content and applying structured criteria to ensure consistency and quality across annotations. Full scope and task details will be covered during onboarding. This is an opportunity to contribute to a project that directly supports content quality and user experience at a global scale. Project Details - Location: Remote - Target Language: Russian - Team: Welo Data – AI Services - Engagement Type: Freelance – Remote - Start Date: Immediate - Duration: 2–3 weeks minimum - Availability: Part-time - Pay Rate: Based on tasks (approximately 13 USD per hour) Responsibilities - Review content based on defined guidelines - Evaluate and annotate different types of content using structured criteria - Apply consistent judgment to ensure annotation quality and accuracy - Follow project guidelines and adapt to updates as needed - Complete tasks within agreed timelines on a flexible, part-time schedule - Participate in onboarding and calibration sessions Qualifications - Native-level proficiency in the target language (C2 or equivalent), with strong command of grammar, fluency, and regional usage - Professional experience in localization QA, translation/revision, linguistic tasks, or data annotation for AI/ML systems is preferred - Strong analytical skills and ability to follow structured guidelines and make consistent decisions - Fluency in English to understand instructions and communicate basic reasoning when needed - Strong attention to detail and ability to maintain consistency across tasks - Comfortable working with evolving guidelines in a fast-paced environment - Familiarity with digital content platforms (music, podcasts, media) is a plus Requirements - Availability to commit to the project duration and expected workload - Reliable internet connection and access to a personal computer - Ability to work as an independent freelance contractor in the target country

Project Overview We are seeking detail-oriented freelance AI Content Evaluators to support a high-impact data annotation project. In this role, you will review content and assess its alignment with provided guidelines. This involves evaluating different types of content and applying structured criteria to ensure consistency and quality across annotations. Full scope and task details will be covered during onboarding. This is an opportunity to contribute to a project that directly supports content quality and user experience at a global scale. Project Details - Location: Remote - Target Language: Russian - Team: Welo Data – AI Services - Engagement Type: Freelance – Remote - Start Date: Immediate - Duration: 2–3 weeks minimum - Availability: Part-time - Pay Rate: Based on tasks (approximately 13 USD per hour) Responsibilities - Review content based on defined guidelines - Evaluate and annotate different types of content using structured criteria - Apply consistent judgment to ensure annotation quality and accuracy - Follow project guidelines and adapt to updates as needed - Complete tasks within agreed timelines on a flexible, part-time schedule - Participate in onboarding and calibration sessions Qualifications - Native-level proficiency in the target language (C2 or equivalent), with strong command of grammar, fluency, and regional usage - Professional experience in localization QA, translation/revision, linguistic tasks, or data annotation for AI/ML systems is preferred - Strong analytical skills and ability to follow structured guidelines and make consistent decisions - Fluency in English to understand instructions and communicate basic reasoning when needed - Strong attention to detail and ability to maintain consistency across tasks - Comfortable working with evolving guidelines in a fast-paced environment - Familiarity with digital content platforms (music, podcasts, media) is a plus Requirements - Availability to commit to the project duration and expected workload - Reliable internet connection and access to a personal computer - Ability to work as an independent freelance contractor in the target country