GenAI Platform Data Engr

Cognizant; Navalcarnero; Remote; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Fully remote

Job summary

Cognizant is seeking a Senior / Lead GenAI Engineer to architect, build and scale production-grade GenAI solutions for a leading banking sector client. You will own end-to-end GenAI initiatives, from architecture to secure deployment, while mentoring engineers and aligning with risk and compliance expectations.

The role emphasizes strong Python expertise, LangChain/LlamaIndex, and deep understanding of LLM concepts.

Qualifications

• 5+ years of software engineering experience with production-grade GenAI/LLM solutions.
• Expert-level Python with modern GenAI frameworks (LangChain, LlamaIndex or equivalent).
• Deep understanding of LLM concepts: RAG, embeddings, prompts, evaluation.
• Experience integrating LLM providers (OpenAI, Anthropic, AWS Bedrock, Azure OpenAI).
• Experience with vector stores (Pinecone, OpenSearch, FAISS, Weaviate) and embeddings optimization.
• Cloud experience (AWS, Azure or GCP) for deploying AI workloads.
• Strong data security and regulatory awareness for banking/finance.
• Proven ability to lead technical initiatives and mentor teams.
• Fluent English.

Responsibilities

• GenAI solution design and delivery from architecture to deployment in production.
• Platform and MLOps: deploy, operate and monitor GenAI apps with secure, scalable infra.
• Leadership and stakeholder management: mentor engineers and translate banking requirements into robust tech.

Skills

Python

Leadership

English fluency

GenAI / LLM concepts

Cloud platforms

Data security & regulatory

Mentoring engineers

Stakeholder management

Education

Degree in Computer Science / Software Engineering / AI

Tools

LangChain

LlamaIndex

Job description

As a Senior / Lead GenAI Engineer, you will design, build and scale production-grade Generative AI solutions for a leading company in the banking sector, taking technical ownership from architecture through deployment, in a fully remote role.
Don't tick every box? If you meet around 70% of the requirements above, we'd still encourage you to apply.

About The Role

We are looking for a Senior / Lead GenAI Engineer with deep, hands-on expertise in Python and Large Language Models to design, build and scale Generative AI solutions for a leading banking sector client. In this role, you will take technical ownership of GenAI initiatives end-to-end — from architecture and prototyping through to secure, compliant production deployment — while mentoring engineers and partnering with business, risk and compliance stakeholders to ensure solutions meet the standards of a highly regulated environment.

Key Responsibilities

GenAI Solution Design & Delivery

• Design, build and deploy production-grade Generative AI solutions (RAG pipelines, conversational assistants, multi-agent systems) using Python and modern LLM frameworks.
• Lead prompt engineering, chain-of-thought orchestration, structured output parsing, guardrails and evaluation pipelines for LLM-based applications.
• Architect and own RAG pipelines end-to-end: document ingestion, chunking, embeddings, vector store management and retrieval optimization.

Platform & MLOps

• Deploy and operate GenAI applications on cloud infrastructure (AWS, Azure or GCP), with a focus on scalability, security and cost optimization.
• Implement evaluation and monitoring frameworks for AI systems: response quality, latency, hallucination detection and feedback loops.
• Define MLOps practices for LLM-based systems: versioning, automated evaluation and production monitoring.

Leadership & Stakeholder Management

• Act as technical lead for GenAI initiatives, mentoring engineers and setting technical direction.
• Translate business requirements from banking stakeholders (risk, compliance, customer experience) into robust technical solutions.
• Partner with architecture, security and compliance teams to ensure GenAI solutions meet the regulatory standards of the banking sector.

Required Skills & Experience

• 5+ years of experience in software engineering, with significant hands-on experience building Generative AI / LLM-based solutions in production.
• Expert-level Python skills, including experience with modern GenAI frameworks (LangChain, LlamaIndex or equivalent).
• Deep understanding of LLM concepts: RAG architectures, embeddings, prompt engineering, fine-tuning and evaluation methodologies.
• Hands-on experience integrating LLM providers (OpenAI, Anthropic, AWS Bedrock, Azure OpenAI) into production systems.
• Experience with vector databases (Pinecone, OpenSearch, FAISS, Weaviate) and embedding optimization.
• Solid cloud experience (AWS, Azure or GCP) for deploying and scaling AI workloads.
• Strong understanding of data security, privacy and regulatory considerations relevant to the banking / financial sector.
• Proven ability to lead technical initiatives and mentor engineering teams.
• Fluent English.

NICE TO HAVE

• Experience designing multi-agent or agentic AI workflows.
• Familiarity with AI observability tools (Langfuse, Weights & Biases, Helicone).
• Prior experience in banking, financial services or other highly regulated industries.
• Experience with MLOps practices and model governance frameworks.

EDUCATION

• Degree in Computer Science, Software Engineering, AI/ML or a related field.

Preferred Certifications

• AWS, Azure or GCP ML/AI certifications, a plus.

WORKING MODEL

Fully remote position.