Senior AI Engineer

Profitero+; Wokingham; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Competitive base salary

Employee healthcare

Flexible working hours

25 days off + bank holidays

Personal development plans

Job summary

A leading global SAAS company in the UK is seeking a Senior AI Agent Engineer to build intelligent applications that leverage large language models. The ideal candidate will have at least 3 years of experience in software development, especially in AI and ML, and will be responsible for driving the technical architecture of next-generation AI products. This role offers a hybrid work model with competitive benefits, emphasizing a collaborative environment and personal development opportunities.

Qualifications

• 3+ years of professional experience in software development, focusing on AI/ML applications.
• Proficiency in using AI/ML libraries and frameworks.
• Hands-on experience with large language models like GPT-4.
• Hands-on experience in developing applications utilizing 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 such as 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.

Responsibilities

• Design, develop, and deploy AI applications and workflows using generative AI models.
• Collaborate with teams to translate requirements into technical solutions.
• Mentor junior engineers and share knowledge within the team.
• Build and optimise prompts and interaction strategies for LLMs to achieve desired outcomes in agentic systems.
• Integrate various tools, APIs, and data sources, potentially utilising 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 such as 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.

Skills

Python

AI/ML concepts

Problem-solving

Communication

Education

Bachelor’s or Master’s in Computer Science or related field

Tools

Claude

OpenAI

Google Gemini

LangChain

RESTful APIs

Job description

About Profitero+

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. Now’s an exciting time to join our fast‑growth business.

Company Overview

Profitero+ joined Publicis Groupe 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.

Location & Experience

Location: Reading and London hybrid flexible
Experience: 3+ Years with AI

Role Overview

We are seeking a highly skilled and motivated Senior AI Agent Engineer with a strong background in building agentic AI applications and workflows. The ideal candidate will have proven expertise in utilising large language models (Claude, OpenAI’s GPT series, Google Gemini, and other similar technologies) to design, develop, and deploy intelligent systems that can reason, act, and learn. Experience with frameworks such as Crew AI, OpenAI Agent SDK, or LangGraph for orchestrating multi‑agent systems is highly valued. 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 optimisation.
• Design and build Retrieval‑Augmented Generation (RAG) systems using embeddings, vector databases, and semantic search.
• Build and optimise prompts and interaction strategies for LLMs to achieve desired outcomes in agentic systems.
• Integrate various tools, APIs, and data sources, potentially utilising 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 such as 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.

Qualifications

• 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 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 such as 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.

Additional Information

The above lists are not exhaustive and the job holder is required to undertake such duties as may reasonably be requested within the scope of the post.

Why you want to work at Profitero+

We want our employees to have an opportunity to share in the success that results from our dedication to service excellence, high‑quality deliverables and an unparalleled client experience. We hire only the best and provide the compensation and benefit programs appropriate for proven top‑performing professionals.

Benefits

Competitive base salary; employee healthcare; life assurance; group income protection; dental care plan; eye care scheme; 24‑hour online 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; flexible working hours.

EEO Statement

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.