Senior AI Engineer

emerchantpay is a leading global payment service provider and acquirer for online, mobile, in-store and over the phone payments. Our global payments solution is available through a simple integration, offering a diverse range of features, including global acquiring, global and local payment methods, advanced fraud management and performance optimisation. We empower businesses to design seamless and engaging payment experiences for their consumers. We are looking for a Senior AI Engineer to join our AI Engineering team and help design, build, and roll out production-grade AI solutions, with a strong focus on AI engineering, AI agents, agentic workflows, machine learning, GenAI, and LLM-based applications . This is a senior individual contributor role within the AI Engineering team. The Senior AI Engineer will work closely with the AI Tech Lead , engineering teams, product stakeholders, data teams, cloud/platform teams, and security teams to deliver reliable AI capabilities into real business systems. The technology stack is diverse and can include Python (FastAPI/Flask/Django) or equivalent frameworks; React on the frontend side, and various ML/AI frameworks, APIs, cloud-native services, along with modern AI tooling . The role will have a strong focus on AWS , including Amazon Bedrock , Amazon Bedrock AgentCore , Amazon SageMaker , and other AWS AI/ML services. Responsibilities • Design, build, and maintain AI-powered applications, services, and integrations as part of the AI Engineering team. • Implement solutions focused on AI agents, agentic workflows, automation, LLM-based applications, and AI-assisted business processes . • Build and integrate AI applications using technologies such as Python (FastAPI/Flask/Django) or equivalent frameworks, React frontends, and relevant AI/ML frameworks . • Implement AI solutions using AWS AI/ML services , including Amazon Bedrock , Amazon Bedrock AgentCore , Amazon SageMaker , and other AWS services for model hosting, inference, orchestration, data processing, monitoring, and security. • Work closely with the AI Tech Lead to align on architecture, technology choices, engineering standards, AI patterns, and rollout approaches. • Provide technical input and guidance to other engineers on AI implementation patterns, code quality, testing, observability, and production readiness. • Develop and integrate AI agents that interact with internal APIs, business workflows, enterprise systems, knowledge bases, and external tools in a safe and controlled way. • Build and maintain RAG-based solutions , including document ingestion, chunking, embeddings, vector search, retrieval logic, reranking, and grounding techniques. • Support the development and deployment of machine learning models and AI solutions into production environments. • Contribute to ML pipelines and MLOps practices , including data preparation, model training, experiment tracking, model deployment, monitoring, evaluation, and lifecycle management. • Integrate LLMs through APIs. • Implement AI evaluation approaches for LLM outputs, RAG quality, agent behavior, model performance, hallucination detection, safety, and reliability. • Support prompt engineering, prompt versioning, function calling, tool use, memory patterns, guardrails, and LLM application testing. • Design and consume APIs and contribute to cloud-based, scalable backend architectures. • Collaborate with product managers, engineers, data scientists, DevOps, security, and business stakeholders to deliver practical AI solutions. • Write clean, maintainable, testable, and well-documented code. • Support production rollouts, troubleshooting, monitoring, optimization, and continuous improvement of AI systems. • Stay current with modern AI technologies, frameworks, m