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DiliTrust

Senior Product Engineer – AI Native

DiliTrust

. Build, improve, and scale features for Lini, DiliTrust's proprietary AI engine .

Posted 9/18/2026full-timeParis • FranceSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates extensive experience in building and operating B2B SaaS platforms, with a strong focus on complex web architectures and modularity. Proficient in property-based testing, contract testing, and performance analysis, ensuring high-quality code and effective feature ownership.

Highest-signal resume keywords
B2B SaaS Platform DevelopmentProperty-Based TestingContract TestingPerformance AnalysisFeature Ownership

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Software EngineeringWeb ArchitectureCoding AgentsTest-Data StrategyAuthorization ModellingSpecification WritingData ClassificationAPI Schema DesignVolumetric Dataset MaintenanceFailure Mode Analysis
Soft Skills
Excellent Written CommunicationStrong JudgmentAccountability
Tools & Technologies
CI-First WorkflowsFeature FlagsAdversarial ReviewsExecution PlansStructured Logs
Certifications & Qualifications
Master's Degree in Engineering
Industry Keywords
SaaSMulti-Tenant SystemsProduct ManagementStakeholder CollaborationRisk Management

About the role

Key responsibilities & impact
  • Build, improve, and scale features for Lini, DiliTrust's proprietary AI engine
  • Contribute at the intersection of AI, product, and engineering
  • Own features end-to-end from technical design through deployment
  • Write specifications with executable acceptance criteria and non-functional requirements
  • Define data classification, authorization matrices, volumetry assumptions, and latency and throughput budgets
  • Freeze API schemas, types, module boundaries, and invariants before implementation fan-out
  • Pilot coding agents with bounded contexts, defined artifacts, stop conditions, budgets, and traceability
  • Maintain separation between code producers and verifiers
  • Independently verify peers' work using adversarial reviews against specifications
  • Build property tests, contract tests, query-count and allocation budgets, execution-plan checks, policy-as-code, and backward-compatibility proofs
  • Sample code by risk zone to calibrate generator and verification-gate defect rates
  • Keep work-in-progress low through capped PR sizes, thin vertical slices, short-lived branches, feature flags, and CI-first workflows
  • Design for blast radius using reversibility, progressive delivery, structured logs, traces, metrics, and instrumentation

Requirements

What you’ll need
  • Based in France with full working rights
  • Fluent in French and English
  • 8+ years of professional software engineering experience
  • Significant experience building and operating B2B SaaS platforms in production
  • Proven ownership of features across design, delivery, iteration, and maintenance
  • Strong background in complex, scalable web architectures and real modularity
  • Demonstrated, sustained use of coding agents in production work
  • Understanding of correlated defects and failure modes in generated code
  • Ability to take accountability for code not personally authored
  • Fluency in property-based testing and contract testing
  • Ability to derive tests from specifications
  • Test-data strategy and maintenance of volumetrically representative datasets
  • Knowledge of authorization modelling in multi-tenant systems
  • Awareness of agent-assisted pipeline security risks, including prompt injection, supply-chain risk, least privilege, and data/code leakage
  • Knowledge of performance analysis, including query budgets, N+1 queries, unbounded result sets, indexes, network calls in loops, and execution plans
  • Excellent written communication and specification-writing skills
  • Extensive experience working with product managers, designers, and stakeholders
  • Strong ownership and judgment regarding product and technical risk
  • Master's degree in Engineering or equivalent practical experience in senior SaaS environments

Benefits

Comp & perks
  • Remote Policy allowing a balance between onsite and remote work
  • Day-to-day benefits of the CSE
  • Luncheon vouchers
  • Profit sharing bonuses