Senior AI Product Engineer

PayFit

. Partner with business users to map workflows and turn needs into AI-powered solutions adopted day-to-day .

Posted 10/30/2026full-timeParis • FranceSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in designing and implementing AI-powered solutions, focusing on API integrations, workflow automation, and production-ready features. Strong collaboration with business users and technical teams to ensure security, maintainability, and user adoption.

Highest-signal resume keywords

7+ Years Software Engineering ExperienceAPI And Systems DesignBuilding With LLMs And AI Workflow AutomationCollaboration With Non-Technical UsersOwnership Across Discovery And Delivery

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

API IntegrationAI Workflow AutomationProduction-Ready AI FeaturesAgent OrchestrationData Source IntegrationEvaluation And MonitoringException HandlingUser Feedback IterationSecurity And Permissions ManagementMaintainability In AI Systems

Soft Skills

CollaborationCommunicationProblem-SolvingUser-Centric DesignOwnership

Industry Keywords

AI-Powered SolutionsBusiness Workflow MappingReusable ComponentsHuman Interaction PatternsApplication FrameworkObservabilityProduction QualityIterationLocal Champions TrainingCEO-Sponsored Initiatives

About the role

Key responsibilities & impact

Partner with business users to map workflows and turn needs into AI-powered solutions adopted day-to-day
Design and implement integrations with APIs, applications, and data sources
Build agent orchestration, retrieval, and custom capabilities
Ship production-ready AI features with evaluation, monitoring, exception handling, and human review where needed
Prioritise opportunities using business ownership, baselines, value, feasibility, and readiness criteria
Iterate using user feedback and quality/time-saved signals to improve reliability and adoption
Co-develop reusable components, permissions, and human interaction patterns with the Application Framework team
Create templates, train local champions, and establish ownership for ongoing operation and improvement
Collaborate with the AI Enablement team, Application Framework team, business owners, and CEO-sponsored initiatives

Requirements

What you’ll need

7+ years of software engineering experience, including API and systems design
Proven hands-on experience building with LLMs, agents, tools, or AI workflow automation in production
Ability to move from an ambiguous business problem to a reliable, maintainable production solution
Care for security, permissions, evaluation, observability, and maintainability in AI-enabled systems
Comfort working directly with non-technical users and collaborating across engineering and business teams
Ownership across discovery, delivery, production quality, and iteration
Identity, diploma, and past professional experience subject to background check after the offer

Benefits

Comp & perks

Possibility to work remotely from anywhere in France or Spain, and abroad for a defined period
Learning platform and company-supported Learning & Development
Career development opportunities and internal moves
GymLib subscription at preferential rates
4 paid sessions with a mental health practitioner and online support with Moka.Care
Mutuelle Henner health insurance, 60% covered by PayFit
50% of public transportation card covered for those living within Ile de France
Budget to travel to the office for employees living outside Ile de France
Restaurant card with Swile, €9 per workday
Home office budget of €150 per year
MacBook as standard working tool
20 weeks maternity leave covered by PayFit
4 weeks leave for the second parent
25 days of holidays plus RTT days, depending on the contract
Disability accommodations during work and recruitment processes