Senior Python AI Engineer

Company description

Publicis Sapient is a leading digital transformation partner, helping established organizations reimagine their future in a digitally enabled world. We empower businesses to evolve—both in how they operate and how they serve their customers—by combining a start-up mindset with modern methods and deep industry expertise.

Our approach fuses strategy, consulting, and customer experience with agile engineering and problem-solving creativity to unlock real business value. With over 20,000 professionals across 53 global offices, we bring together the best of technology, data science, and human insight to design and build the products and services that people truly value.

Driven by our purpose—helping people thrive in the brave pursuit of next—we are united by a shared commitment to innovation, collaboration, and continuous transformation. At Publicis Sapient, we don’t just adapt to change—we lead it.

Overview

We are seeking a Senior Python Developer to drive our AI-powered legacy modernization initiative on Azure. You will leverage cutting-edge AI tooling (e.g., Azure OpenAI, Cognitive Services) to develop and maintain migration tools and frameworks that refactor and migrate existing legacy systems, reducing technical debt and accelerating innovation. You’ll partner with product, data engineering, and ML teams to support effective modernization processes.

Responsibilities

Your Impact:

• Lead AI-driven refactoring and migration of legacy systems, minimizing manual effort and technical debt.
• Lead AI-driven refactoring and migration of legacy systems, minimizing manual effort and technical debt.
• Integrate AI-enhanced code analysis into CI/CD pipelines to ensure early quality checks.
• Collaborate with data scientists and ML engineers to embed AI capabilities into migration workflows.
• Conduct comprehensive code reviews and share best practices to elevate code maintainability.
• Develop automated unit and integration tests using AI-assisted frameworks to boost coverage.
• Mentor and coach junior developers on AI-augmented development techniques and modern Python standards.

Qualifications

Your Skills & Experience:

• 6+ years of professional Python development experience with modern frameworks.
• Proven track record in refactoring and migrating legacy codebases using AI-assisted and manual methods. (Nice to Have)
• Practical experience with AI-based code generation and analysis tools (LangChain y LangGraph , Azure OpenAI, OpenAI Codex).
• Deep knowledge of Azure AI services: Azure ML, Cognitive Services, Azure OpenAI. (Nice to Have)
• Expert in containerization: Dockerizing applications end-to-end from development environment through production, and orchestrating with Kubernetes.
• Proficiency with diverse data structures and memory-optimization techniques for high-performance computing.
• Expert user of pandas for sophisticated DataFrame manipulation, analysis, and performance tuning.
• Deep understanding of Python’s single-threaded nature and experience implementing concurrency workarounds (asyncio, multiprocessing).
• Hands-on experience developing FastAPI applications, following best practices for routing, validation, and asynchronous endpoints
• Expertise in CI/CD pipeline design: authoring and explaining configuration files (YAML, JSON), and implementing pipelines in Azure DevOps or Jenkins.
• Experience building Python projects from scratch: virtual environment setup (venv), packaging, and deployment strategies.
• Bachelor’s degree in Computer Science, Software Engineering, or related field, or equivalent professional experience.
• "Rock star" attributes: self-starter attitude, full-stack Python mastery, cloud integration expertise, and strong data-handling capabilities.

Set Yourself Apart With:

• Familiarity with front-end technologies (HTML, CSS, JavaScript).
• Experience in additional languages (Java, Go) for cross-stack collaboration.
• Background in data science, ML, or automation beyond code modernization
• Agile certifications (Scrum, Kanban) or cloud architecture credentials.
• Strong expertise in designing and interacting with RESTful APIs, and working with SQL/NoSQL databases and ORMs (SQLAlchemy, Django ORM).

Additional information

Benefits of Working Here

• Full-time/ Indefinite term contract
• Remote work environment
• Local Holidays and extra PTO
• Private medical insurance
• Connectivity bonus
• E-Learning platforms (Udemy, Marcel, LinkedIn Learning)
• Exclusive discounts
• English lessons
• Work with a global leader in digital transformation.
• Be part of a collaborative, agile, and forward-thinking team.
• Access to continuous learning and development opportunities.
• Enjoy flexible work arrangements and a competitive compensation package.