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AI Architect

00067215281

AI Architect (Python & Chatbot & AWS Enterprise Solutions)

Location: Hybrid – Brussels, Belgium
Employment Type: Permanent
Seniority: Senior / Lead
Department: Data & AI

About the Role

As an AI Architect, you will make an impact by designing, building, and scaling production-grade GenAI systems with Python at the core and AWS platforms. You will be a valued member of the Data & AI team and work collaboratively with product, data, and platform teams to translate business goals into robust AI solutions that deliver measurable outcomes.

In this Role, You Will:

  • Define reference architectures for RAG pipelines and agentic systems, ensuring safety and reliability.
  • Lead end-to-end design and implementation of AI/ML systems, including model selection, training, and deployment.
  • Leverage AWS AI/ML services (Amazon Bedrock, SageMaker, Lambda, S3, EC2, EKS) for cloud-native solutions.
  • Architect conversational AI (chatbot) capabilities with RAG and LLM fine-tuning strategies.
  • Establish observability and evaluation frameworks for LLM Ops, including tracing and monitoring.

Work Model

We believe hybrid work is the way forward. Based on this role’s business requirements, this is a hybrid position requiring regular presence in Brussels, Belgium.

What You Need to Have to Be Considered

  • 15+ years in technical roles, with 5+ years in enterprise-scale AI/ML solution design.
  • Expert in Python (typing, async, packaging), FastAPI/Flask, and API design.
  • Hands-on delivery of RAG systems and agentic workflows.
  • Strong experience with AWS/Azure/GCP for AI workloads, containers, and Kubernetes.
  • Solid grounding in security & compliance (IAM, PII handling, audit logging).

These Will Help You Stand Out

  • Experience with agent frameworks (CrewAI, AutoGen, LangGraph).
  • Familiarity with observability tools for LLMs (LangSmith, Langfuse, Arize Phoenix).
  • Knowledge of prompt engineering patterns and safety techniques.
  • Certifications in AWS GenAI, Azure AI, or GCP ML/GenAI.

What We Offer (Belgium)

  • Health insurance, life cover, and pension plan.
  • Car or mobility budget, work-from-home allowance.
  • 32 vacation days, luncheon vouchers, EcoCheques.
  • Laptop, mobile phone with subscription.
  • Travel insurance and entertainment cost coverage.

Contact the Recruiter

Lucia Velasco
[email protected]
+32 493 89 16 33

What we offer

  • The chance to work with impact. Here, you’re empowered to bring your biggest thinking to help our company and clients improve everyday life.
  • Ownership over your career. Stay at the top of your game through our award-winning learning and development ecosystem. And when your ambitions change or we offer new opportunities, we help you pivot by providing reskilling, on-the-job learning and guidance to find new roles that might be a better fit.
  • The opportunity to thrive on a high caliber team with heart. We celebrate each other’s experiences and perspectives and promote a sense of belonging through our affinity groups and diversity and inclusion initiatives.
  • A comprehensive total rewards package, including a competitive salary and a pension plan with matching contributions.
  • Flexible health and financial benefits to support you and your eligible dependents—from day one.
  • True work-life balance. Be at your best through paid time off, flexible work arrangements, volunteering opportunities, social events, and so much more.  

About us
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, building the bridge between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, realize tangible returns and keep global enterprises ahead in a fast-changing world. See how at www.cognizant.com or @cognizant.

Other employment-related information
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, provincial or local laws.

If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] with your request and contact information.

Language requirements vary depending on roles, but we ask that all candidates have basic English proficiency for company-wide communications purposes. For roles based in Quebec, professional English proficiency is required, as you’ll deliver services to and collaborate with stakeholders outside the province who may not speak French.

Your path to Cognizant

Wondering what to expect after you apply? Here’s a peek at our recruitment process—and keep in mind that not all candidates advance through every step and the process may vary depending on your role and location.

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Step 1: Application

Find an open role that aligns with your skills and career goals and show us why you’re the person for the job. Consider joining our Talent Community if you don’t find the right opportunity.

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Step 2: Recruiter call

If one of our recruiters sees a fit, they’ll set up a short introductory call to learn more about you and how your experiences and skills align with the role.

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Step 3: Interview(s)

If you and our team would like to continue the process, you’ll meet with one of our hiring managers. Some roles may also require technical assessments and/or client interviews.

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Step 4: Final decision

Our hiring team will then review each candidates’ potential to succeed in the role. This process may take some time because we want to get it right—but you can count on us to keep you updated.

Benefits that help you thrive and grow

Our teams achieve incredible things when they feel fully supported. That’s why our benefits program is built around the diverse needs of our people—so they can enjoy a fulfilling, balanced and healthy life.

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Financial wellbeing

Financial wellbeing

We regularly review market data to ensure compensation is competitive and reflects the value you bring. Your benefits extend beyond pay and may include retirement plans, financial education, discount programs, etc.

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Physical and mental wellbeing

Physical and mental wellbeing

We empower you to prioritize your wellbeing through paid time off, flexible working where possible, healthcare plans, counselling, our Mental Health Allyship program and more. 

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Your career, your way

Your career, your way

With 90% of our associates building skills through GenAI training, job shadowing, industry certifications and more, you have everything you need to build a full career.

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Real-world impact

Real-world impact

Think about the biggest brands you rely on. Chances are, they rely on us to help strengthen their business. Here, you’ll turn bold ideas into solutions that improve lives everywhere.

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"Cognizant has one of the best learning ecosystems you can ask for. From sponsored certifications to training platforms to mentorship, we have all that we need to grow.”
Debashish Mishra SAP MM Developer
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"Cognizant offers me more than a job; it offers a community. We support each other, collaborate across borders and celebrate wins together. If you’re looking for a culture that values flexibility, diversity and growth, this is the place to be."
Laura Reynaud Lead Counsel
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“I’ve had the chance to work on impactful projects and shadow colleagues, all while getting involved in internal initiatives. The world is your oyster at Cognizant—you just need to take advantage of it!”
Lucas Hoffman Consultant
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“When I first joined, I was quiet and hesitant to share my thoughts. The leadership programs and the mentoring I’ve received have helped me find my voice and grow as a leader.”
Sujatha Gopalakrishnan Portfolio Delivery Lead
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"Nobody here says ‘that’s not my job.’ People just help. That’s the entrepreneurial culture that makes me stay at Cognizant.”
Paulo Miguel Epili Sr. Process Executive

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