AI Engineering Consultant/Architect

AI Engineering Consultant/ArchitectAbout Reply:Reply specialises in designing and implementing solutions based on new communication channels and digital media. Structured as a network of highly specialised companies, Reply supports leading European industrial groups in sectors such as Telco & Media, Industry and Services, Banking and Insurance, and Public Administration, helping define and develop business models enabled by new paradigms such as AI, Cloud Computing, Digital Media, and the Internet of Things. Reply’s services include Consulting, System Integration, and Digital Services. Role Overview:We’re looking for a hands-on AI Engineering Consultant with expertise in applied AI, agentic systems, and software engineering.You’ll design and deliver end-to-end AI solutions, working closely with clients and internal teams to take ideas from concept to production. This includes agentic systems, bespoke applications, and early-stage (0–1) product development, primarily using OpenAI technologies.We’re particularly interested in engineers who combine technical depth with real-world impact, and who are keen to grow into broader architectural and leadership responsibilities.While OpenAI is central to our work, we also value curiosity and awareness of the wider LLM ecosystem to help make thoughtful, well-rounded technical decisions.Responsibilities:Design and build AI applications using OpenAI and related technologiesDevelop production-ready systems across APIs, backend services, and user-facing applicationsDeliver GenAI solutions including RAG pipelines, tool use, and evaluation frameworksContribute across the full solution lifecycle: design, build, testing, deployment, and iterationSupport development of agentic systems (multi-agent workflows, orchestration, human-in-the-loop)Optimise performance, cost, and maintainability in cloud environments (AWS/Azure)Work closely with clients to shape practical, business-aligned solutionsCommunicate technical decisions clearly to technical and non-technical stakeholdersAbout the candidate:Strong hands-on software engineering experience, particularly Python and backend/API developmentProven experience building production-ready systems and practical delivery of LLM / GenAI applications (e.g. RAG, tool use, structured outputs, evaluation)Ability to work across the full delivery lifecycleCloud experience in AWS or AzureStrong engineering practices (testing, CI/CD, version control, secure development) Comfortable in client-facing environments, translating business needs into solutionsExperience with OpenAI or similar LLM platforms and exposure to agentic architectures (multi-agent systems, orchestration, HITL workflows)Experience with vector databases and familiarity with PyTorch or TensorFlow0–1 product development experienceReply is an Equal Opportunities Employer and committed to embracing diversity in the workplace. We provide equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type regardless of age, sexual orientation, gender, identity, pregnancy, religion, nationality, ethnic origin, disability, medical history, skin colour, marital status or parental status or any other characteristic protected by the Law. Reply is committed to making sure that our selection methods are fair to everyone. To help you during the recruitment process, please let us know of any Reasonable Adjustments you may need.Requisition ID11318- Posted06/19/2026-Consulting-Years of Experience (2)1-3 , 3-5Where (1)United Kingdom

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