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Lead Software Engineer - Solution & Data Architecture - B2B SaaS Fintech

Paris, Île-de-France, France💼 Full-time🗓 2026-09-11 → 2026-09-26

Core

Lead Software Engineer responsible for solution and data architecture for an AI-powered investment management platform, ensuring scalability, security, and performance for complex financial data.

Role type

Senior IC technical lead / Architect

Builds

Intelligent operating platform for modern investment management (Sesame)

Domain

Fintech / Investment Management / AI

Deliverable

production ML models | product features | infrastructure

Required skills

Kotlin, Java (17+), Spring ecosystem, SQL, data modeling, Python, React/TypeScript, Kubernetes, cloud networking, AI-assisted development, security design, performance optimization, testing strategy, Docker, CI/CD, team leadership

Preferred skills

Experience with coding agents, MCP integrations, financial domain knowledge

Technologies

Kotlin, Java, Spring, Python, React, TypeScript, Kubernetes, Azure, Docker, Git

Responsibilities

Own feature architecture end-to-end from frontend to cloud infrastructure; design and review data ingestion and ETL pipelines; set coding standards, API design, and quality gates; line-manage a squad of engineers; challenge and refine product requirements; ensure security, scalability, and performance in system design.

Seniority

Senior, hands-on IC with leadership responsibilities

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