Senior Python / Agentic AI Engineer

Capco; Brussel; Hybrid; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Company car or green mobility budget

End-of-year bonuses

Health insurance

Learning opportunities

Flexible working environment

Work-life balance

Job summary

Capco is seeking experienced professionals in Brussels to design and implement AI-driven solutions utilizing Python and LLMs. Candidates must have over 5 years of experience in enterprise-grade applications and strong software engineering fundamentals. The role involves collaborating with teams to integrate AI capabilities and ensuring systems meet compliance standards. Capco promotes a flexible working environment and offers competitive compensation, including bonuses and health benefits.

Qualifications

• 5+ years of professional experience building enterprise-grade Python applications.
• Strong expertise in applying LLMs for automation and decision support.
• Experience with agentic architectures and orchestration.

Responsibilities

• Design and implement scalable Python services leveraging LLMs.
• Collaborate with teams to integrate AI in enterprise applications.
• Ensure systems meet security and compliance standards.

Skills

Fluent in English

Fluent in Dutch or French

Software engineering fundamentals

Building enterprise-grade Python applications

Designing and deploying Agentic or LLM-powered systems

Expertise with large language models

Building reliable AI systems

Tools

Python

APIs

Angular

React

Job description

Capco is a global leader in consulting, uniquely positioned to drive innovation and transformation in the financial services industry. More than consultants, we are strategic partners and problem solvers for some of the largest organizations in Banking, Insurance, Investment Management, Data/Digital Transformation, Regulatory Compliance, and ICT Risk. Our business and technology professionals thrive in a dynamic environment where creativity, collaboration, and cutting‑edge solutions are at the heart of everything we do. Experience the Capco difference and explore how you can shape your future with us at capco.com.

Capco’s AI Lab

The AI Lab is a cross‑disciplinary research and engineering centre that translates advanced AI research into robust, deployable solutions for clients and internal products. It runs applied research (ML and agentic/LLM systems, planning, simulation and evaluation), rapid prototyping and production engineering (APIs, CI/CD, observability, data platforms and cost/latency optimisation), and rigorous evaluation and safety work (benchmarks, red‑team, monitoring, governance and compliance). The lab also supports client engagements and internal innovation by building demonstrators and reference architectures, transferring technology to delivery teams, publishing technical learnings, and maintaining the shared infrastructure, tooling and best practices that enable reproducible, secure and scalable AI deployment.

Responsibilities

• Design and implement scalable, production‑grade Python services that leverage LLMs and Agentic architectures.
• Design and implement robust agent workflows and orchestration patterns to automate complex business processes in regulated enterprise environments.
• Build and maintain reliable AI‑enabled backend systems, including orchestration layers, tool integrations, knowledge access mechanisms, and observability.
• Design modern knowledge access architectures for LLM systems, including retrieval strategies, semantic indexing, and structured interfaces to enterprise data sources.
• Apply strong software engineering practices (testing, CI/CD, monitoring, structured logging, versioning of prompts and models) to ensure reliability and maintainability of AI systems.
• Collaborate with cross‑functional teams to integrate AI capabilities into enterprise applications and workflows.
• Work closely with stakeholders to translate business requirements into secure, compliant, and scalable AI‑driven solutions.
• Contribute to system architecture decisions including agent orchestration, reasoning workflows, knowledge access strategies, and model integration patterns.
• Optionally contribute to user interfaces using Angular or React to support AI‑powered applications.
• Ensure systems meet enterprise standards for security, reliability, and compliance.

Required Experience

• Fluent in English and fluent in Dutch or French.
• 5+ years of professional experience building enterprise‑grade Python applications, with strong software engineering fundamentals.
• Proven experience designing and deploying Agentic or LLM‑powered systems in production, ideally within enterprise or regulated environments.
• Strong expertise applying large language models to complex automation, information retrieval, and decision–support problems.
• Experience designing agentic architectures, including orchestration, tool usage, planning workflows, and system‑level reasoning patterns.
• Experience building LLM systems that combine reasoning, tool access, and dynamic information retrieval, beyond simple prompt pipelines.
• Deep proficiency in Python, including modern frameworks, OOP, design patterns and best practices.
• Experience developing production APIs and backend services that integrate with enterprise systems and data sources.
• Demonstrated experience building reliable AI systems beyond prototypes, with attention to testing, monitoring, evaluation, and operational stability.

Why Join Capco?

• Capco provides an environment where your expertise and innovative ideas will thrive. Here’s why you’ll love working with us:
• Competitive Compensation: Includes a company car or green mobility budget, allowances, end‑of‑year bonuses, health insurance, mobile phone, laptop, and meal vouchers.
• Learning Opportunities: Gain access to advanced learning platforms, in‑person and virtual courses, and our network of global experts to support your continuous development.
• Flexible Working Environment: Enjoy a hybrid setting, combining the benefits of remote flexibility with in‑office collaboration.
• Work‑Life Balance: Work in a supportive environment designed to encourage balance and wellness both personally and professionally.
• Innovative Culture: Operate in a non‑hierarchical workspace where great ideas and initiative are celebrated, giving you a platform to showcase your expertise.