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About the Role

We are seeking a highly skilled and motivated Senior AI Agent Engineer with a strong background in building agentic AI applications and workflows. You will be a key player in our AI team, responsible for driving the technical architecture and implementation of our next-generation AI products, taking AI/LLM models from prototype to production to power Profitero+ products and internal tools.

Responsibilities

• Design, develop, and deploy LLM-based systems, agentic applications and complex AI workflows using generative AI models (Claude, OpenAI, Gemini, etc.) and relevant frameworks (e.g., LangChain, LangGraph, Crew AI, or similar).
• Deploy, operate, and iterate on AI systems in production environments, including performance tuning and cost optimization.
• Design and build Retrieval-Augmented Generation (RAG) systems using embeddings, vector databases, and semantic search.
• Build and optimize prompts and interaction strategies for LLMs to achieve desired outcomes in agentic systems.
• Integrate various tools, APIs, and data sources, potentially utilizing MCP Servers, to enhance model context and tool integration.
• Develop robust, scalable, and maintainable code in Python for all components of the agentic applications, from backend logic to API integrations.
• Implement testing, evaluation and monitoring strategies for agentic systems to ensure performance, reliability, and safety, and effective reasoning, tool usage, and failure handling.
• Collaborate closely with product managers, designers, and other engineers to translate requirements into technical solutions.
• Stay up-to-date with the latest research and developments in generative AI, LLMs, agentic systems, and protocols like MCP, evaluating their potential for our products.
• Contribute to the architecture and technical roadmap of our AI initiatives.
• Mentor junior engineers and share knowledge within the team.

Requirements

• Bachelor's or Master's degree in Computer Science, Engineering, Artificial Intelligence, or a related field.
• Minimum of 3 years of professional experience in software development, with a significant focus on AI/ML applications.
• Proven proficiency in Python and experience with relevant AI/ML libraries and frameworks.
• Hands-on experience in developing applications utilizing Large Language Models (LLMs) such as Claude, OpenAI (GPT-4, etc.), Google Gemini, or other prominent generative AI models.
• Experience in building agentic applications or workflows, demonstrating an understanding of concepts like planning, memory, tool usage, and multi-agent systems.
• Familiarity with AI workflow orchestration and agentic frameworks (e.g., LangChain, LangGraph, Crew AI, Haystack, or similar).
• Practical experience with RAG architectures, embeddings, vector databases, and semantic search.
• Experience working with Model Context Protocol (MCP) Servers.
• Experience with RESTful APIs and integrating external services.
• Solid understanding of software development best practices, including version control (Git), testing, and CI/CD.
• Experience with Snowflake is a plus.
• Excellent problem-solving skills and the ability to work independently and as part of a collaborative team.
• Strong communication skills, both written and verbal.

Skills

• AI Agent Engineering
• Agentic AI Applications
• Agentic AI Workflows
• Large Language Models (LLMs)
• Claude
• OpenAI GPT series
• Google Gemini
• Crew AI
• OpenAI Agent SDK
• Langgraph
• Python
• Retrieval-Augmented Generation (RAG)
• Embeddings
• Vector Databases
• Semantic Search
• Model Context Protocol (MCP) Servers
• RESTful APIs
• Git
• CI/CD
• Snowflake

Location

• Reading
• London

Work Type

• Hybrid
• Flexible working hours

Experience Level

• 3+ Years with AI
• Senior

Education Level

• Bachelor's degree in Computer Science, Engineering, Artificial Intelligence, or a related field
• Master's degree in Computer Science, Engineering, Artificial Intelligence, or a related field

Benefits

• Competitive base salary
• Employee healthcare
• Life assurance
• Group income protection
• Dental care plan
• Eye care scheme
• 24 hour on-line GP
• Company pension
• Cycle to work scheme
• 25 days off + bank holidays + birthdays off
• Reduced gym membership
• Social events
• Employee referral scheme
• Personal development plans
• Profitero Hero scheme

About the Company

• Profitero+ is a leading global SaaS commerce platform that uses predictive intelligence to help brands anticipate, activate and automate their next best action to fuel profitable growth.
• Our technology monitors 80+ million products daily, across 1400+ retailers and 70+ countries, helping brands optimise search placement, product content, pricing, stock availability, reviews and more.
• News outlets, including Good Morning America, The Wall Street Journal and Ad Age frequently cite and trust Profitero as a source of data for their stories.
• Profitero+ joined Publicis Groupe (a $13 billion global marketing services and technology company) as a standalone commerce division, infusing our business with significant product development resources and investment while giving our employees an incredible launchpad for their careers.
• Profitero’s tech and data combined with Publicis’ tech, data and activation services positions us to be a true end-to-end partner for helping brands maximise eCommerce market share and profits.
• Come be a part of our fast-paced, entrepreneurial culture and next stage of growth.
• Be part of a company on the forefront of eCommerce revolution where you will learn a lot and be a catalyst to turbo-charging your skills, experience and career.

Equal Opportunity

• Profitero+ is committed to creating a diverse work environment and is proud to be an equal opportunity employer.
• All qualified applicants will receive fair consideration for employment.
• Profitero recruits, employs, trains, compensates and promotes regardless of race, religion, colour, national origin, sex, disability, age, veteran status, and other protected characteristics as required by applicable law.