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Expert Developer – Application Modernization & Generative AI
Expert Developer – Application Modernization & Generative AICGI • Montreal, QC, Canada
Expert Developer – Application Modernization & Generative AI

Expert Developer – Application Modernization & Generative AI

CGI • Montreal, QC, Canada
8 days ago
Job type
  • Full-time
Job description

Expert Developer – Application Modernization & Generative AI

Position Description

The Expert Developer – Application Modernization & Generative AI is responsible for designing, developing, and integrating generative AI solutions and agentic architectures into enterprise systems. This role plays a key part in modernizing existing applications by enriching them with intelligent capabilities (LLMs, RAG, AI agents, copilots) to enhance efficiency, automation, and user experience.

The expert serves as a technical reference, contributes to solution engineering, and ensures rigorous execution aligned with IT standards.

Key Responsibilities

1. Application Development & Modernization

  • Design and develop generative AI-powered features within existing applications (intelligent assistants, content processing, automated resolution, etc.).
  • Refactor and modernize components to enable seamless integration of LLMs and AI agents.
  • Implement APIs, microservices, and AI integration modules within existing IT architectures.
  • Collaborate with architects to translate technical requirements into scalable, industrializable solutions.

2. Generative & Agentic AI Integration

  • Build solutions leveraging models such as OpenAI, Azure OpenAI, Anthropic, or open-source LLMs.
  • Design and implement agentic systems orchestrating multiple tools, actions, or reasoning steps.
  • Develop RAG pipelines (indexing, vectorization, retrieval) and advanced contextualization mechanisms.
  • Implement guardrails, robust prompting, security policies, and quality control mechanisms.
  • 3. Engineering, Quality & Performance

  • Produce maintainable, tested, high-performance code aligned with industry standards.
  • Conduct technical code reviews, propose improvements, and solve complex engineering challenges.
  • Diagnose, optimize, and monitor the performance of AI solutions in production.
  • Contribute to DevOps / MLOps / GenAIOps practices : CI / CD, containerization, observability, continuous model evaluation.
  • 4. Collaboration & Technical Leadership

  • Work closely with architects, analysts, and business teams to understand use cases.
  • Contribute to technical workshops, demos, and proofs of concept.
  • Provide advanced technical support to development teams integrating AI.
  • Document solutions, patterns, and recommended practices.
  • 5. Innovation & Technology Watch

  • Stay up to date with advancements in generative AI, agentic architectures, RAG, and orchestration frameworks.
  • Experiment with new models, tools, and techniques to assess enterprise applicability.
  • Identify optimization and innovation opportunities within the application ecosystem.
  • Technical Skills

    Generative AI & Agents

  • Strong knowledge of LLMs and frameworks (OpenAI, Azure OpenAI, HuggingFace, Llama, etc.).
  • Experience with agentic frameworks : LangChain, OpenAI Agents, Semantic Kernel, AutoGen, CrewAI.
  • Expertise in RAG pipelines, embeddings, vector stores, hybrid search.
  • Prompt engineering, hallucination mitigation, guardrails.
  • Development & Application Integration

  • Excellent knowledge of Python (mandatory) and ideally another language (C#, Java, TypeScript).
  • Mastery of REST / GraphQL APIs, microservices, cloud integration.
  • Experience with application modernization (refactor, decoupling, APIfication).
  • Good understanding of cloud architectures (Azure, AWS, or GCP).
  • DevOps / MLOps / GenAIOps

  • Containerization (Docker), orchestration (Kubernetes).
  • CI / CD pipelines.
  • Familiarity with MLOps tools (MLflow, Vertex AI, Azure ML) — a plus.
  • Observability, model evaluation, and monitoring.
  • Soft Skills

  • Strong autonomy, initiative, and ability to solve complex problems.
  • Technological curiosity and willingness to stay ahead of trends.
  • Ability to explain AI concepts to developers and stakeholders.
  • Rigor, attention to detail, and quality-driven mindset.
  • Collaborative spirit and clear communication.
  • Profile

  • 5–10 years of experience in software development.
  • Experience with generative AI, LLMs, or intelligent systems (or proven project-based experience).
  • Practical experience integrating AI into existing applications or services.
  • Contributions to PoCs, pilots, or AI production projects.
  • CGI is providing a reasonable estimate of the pay range for this role. The determination of this range includes factors such as skill set level, geographic market, experience and training, and licenses and certifications. Compensation decisions depend on the facts and circumstances of each case. A reasonable estimate of the current range is $90.000–$175,000 This role is an / a future opportunity.

    #LI-NO1

    Your future duties and responsibilities

    Required qualifications to be successful in this role

    Together, as owners, let’s turn meaningful insights into action.

    Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

    You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

    Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

    You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

    At CGI, we value the strength that diversity brings and are committed to fostering a workplace where everyone belongs. We collaborate with our clients to build more inclusive communities and empower all CGI partners to thrive. As an equal-opportunity employer, being able to perform your best during the recruitment process is important to us. If you require an accommodation, please inform your recruiter.

    To learn more about accessibility at CGI, contact us via email . Please note that this email is strictly for accessibility requests and cannot be used for application status inquiries.

    Come join our team—one of the largest IT and business consulting services firms in the world.

    Développeur Expert Modernisation Applicative & IA Générative

    Job Description

    Le Développeur Expert – Modernisation Applicative & IA Générative est responsable de concevoir, développer et intégrer des solutions d’IA générative et d’architectures agentiques dans les systèmes et applications d’entreprise. Il joue un rôle clé dans la modernisation des applications existantes en les enrichissant de capacités intelligentes (LLM, RAG, agents IA, copilots) pour améliorer l’efficacité, l’automatisation et l’expérience utilisateur.

    Il agit comme un référent technique, participe à l’ingénierie des solutions et assure une exécution rigoureuse et alignée sur les standards TI.

    Responsabilités principales

    1. Développement et modernisation applicative

  • Concevoir et développer des fonctionnalités IA génératives intégrées à des applications existantes (assistants intelligents, traitement de contenu, résolution automatisée).
  • Adapter, refactoriser et moderniser des composants pour permettre l’intégration harmonieuse des LLMs et des agents IA.
  • Implémenter des API, microservices et modules d’intégration IA dans les architectures TI existantes.
  • Collaborer avec les architectes pour traduire les besoins techniques en solutions concrètes et industrialisables.
  • 2. Intégration IA générative & agentique

  • Développer des solutions utilisant des modèles génératifs tels que OpenAI, Azure, Anthropic ou des modèles open-source.
  • Concevoir et implémenter des systèmes agentiques orchestrant plusieurs outils, actions ou étapes de raisonnement.
  • Mettre en œuvre des pipelines RAG (indexation, vectorisation, retrieval) et des mécanismes de contextualisation avancée.
  • Développer des garde-fous (guardrails), prompts robustes, politiques de sécurité et mécanismes de contrôle de qualité.
  • 3. Ingénierie, qualité et performance

  • Produire un code maintenable, testé, performant et conforme aux standards de l’industrie
  • Réaliser des revues de code techniques, proposer des améliorations et résoudre des problématiques complexes.
  • Diagnostiquer, optimiser et monitorer les performances des solutions IA en production.
  • Participer aux pratiques DevOps / MLOps / GenAIOps : CI / CD, conteneurisation, observabilité, évaluation continue.
  • 4. Collaboration et expertise

  • Travailler étroitement avec les architectes, analystes et équipes affaires pour comprendre les cas d’usage.
  • Contribuer activement aux ateliers techniques, démonstrations et preuves de concept.
  • Offrir un soutien technique avancé aux équipes de développement lors de l’intégration IA.
  • Documenter les solutions, patterns et pratiques recommandées.
  • 5. Veille technologique et innovation

  • Suivre les progrès en IA générative, architectures agentiques, RAG avancé et frameworks d’orchestration.
  • Expérimenter de nouveaux modèles, outils et techniques, et évaluer leur applicabilité dans un contexte d’entreprise.
  • Proposer des optimisations ou opportunités d’innovation dans l’écosystème applicatif.
  • Compétences techniques recherchées

    IA générative & agents

  • Maîtrise des LLMs et des frameworks tels que OpenAI, Azure OpenAI, HuggingFace, Llama, etc.
  • Expérience avec les framework agentique : LangChain, OpenAI Agents, Semantic Kernel, AutoGen, CrewAI.
  • Conception de pipelines RAG : embeddings, vector stores, retrieval optimisés, hybrid search.
  • Ingénierie de prompts, gestion des risques d’hallucination, guardrails.
  • Développement & intégration applicative

  • Excellente maîtrise de Python (obligatoire) et idéalement d’un autre langage tel que C#, Java ou TypeScript
  • Maîtrise des API REST / GraphQL, microservices, intégration cloud.
  • Expérience en modernisation applicative (refactor, découplage, APIfication).
  • Bonne compréhension des architectures cloud (Azure, AWS ou GCP).
  • DevOps / MLOps / GenAIOps

  • Conteneurisation (Docker), orchestration (Kubernetes).
  • Pipelines CI / CD.
  • Outils MLOps (MLflow, Vertex AI, Azure ML) — atout.
  • Observabilité, évaluation et monitoring de modèles IA.
  • Compétences comportementales

  • Forte autonomie, sens de l’initiative et capacité à résoudre des problèmes complexes.
  • Curiosité technologique et volonté de rester à l’avant-garde.
  • Capacité à vulgariser des concepts IA auprès d’autres développeurs ou parties prenantes.
  • Rigueur, souci du détail et orientation qualité.
  • Esprit collaboratif et communication claire.
  • Profil recherché

  • 5 à 10 ans d’expérience en développement logiciel.
  • Expérience en IA générative, LLMs ou systèmes intelligents (ou expérience équivalente démontrable via projets).
  • Expérience concrète en intégration IA dans des applications ou services existants.
  • Contributions à des PoCs, pilotes ou projets IA en production.
  • CGI offre une estimation raisonnable de la fourchette salariale pour ce poste. Le calcul de cette fourchette dépend de divers facteurs, notamment le niveau de compétence, le marché géographique, l’expérience, la formation ainsi que les licences et certifications professionnelles. Les décisions en matière de rémunération dépendent des particularités de chaque cas. Une estimation raisonnable de cette fourchette salariale se situe entre 90.000$ et 175,000 $. Ce poste est une opportunité future.

    #LI-NO1

    Your future duties and responsibilities

    Required qualifications to be successful in this role

    Ensemble, en tant que propriétaires, mettons notre savoir-faire à l’œuvre.

    La vie chez CGI est ancrée dans l’actionnariat, le travail d’équipe, le respect et un sentiment d’appartenance. Chez nous, vous pourrez exploiter votre plein potentiel parce que…

    Nous vous invitons à devenir propriétaire dès le jour 1 alors que nous travaillons ensemble à faire de notre rêve une réalité. C’est pourquoi nous nous désignons comme associés de CGI, plutôt que comme employés. Nous tirons profit des retombées de notre succès collectif et contribuons activement à l’orientation et à la stratégie de notre entreprise.

    Votre travail crée de la valeur. Vous élaborerez des solutions novatrices et développerez des relations durables avec vos collègues et clients, tout en ayant accès à des capacités mondiales pour concrétiser vos idées, saisir de nouvelles opportunités, et bénéficier d’une expertise sectorielle et technologique de pointe.

    Vous ferez évoluer votre carrière en vous joignant à une entreprise bâtie pour croître et durer. Vous serez soutenus par des leaders qui ont votre santé et bien-être à cœur et qui vous permettront de saisir des occasions afin de parfaire vos compétences et élargir les horizons.

    Chez CGI, nous valorisons la richesse que la diversité apporte et nous nous engageons à favoriser un environnement de travail où chacun s’épanouit. Nous collaborons avec nos clients pour bâtir des communautés plus inclusives et permettre à tous les associés de CGI de réussir. En tant qu’employeur prônant l’égalité des chances, il est important pour nous que vous puissiez donner le meilleur de vous-même durant le processus de recrutement. Si vous avez besoin d’un accommodement particulier, veuillez en informer votre recruteur.

    Pour en savoir plus sur l'accessibilité chez CGI, contactez-nous par courriel . Veuillez noter que ce courriel est strictement réservé aux demandes d'accessibilité et ne peut être utilisé pour vérifier l'état d’une candidature.

    Joignez-vous à nous, l’une des plus importantes entreprises de conseil en technologie de l’information (TI) et en management au monde.

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    Application Developer • Montreal, QC, Canada

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