Top Tech Jobs & Startup Jobs in Paris

Designs and implements behavior planning algorithms for autonomous vehicles operating in structured, low-speed airport environments. Responsibilities include developing C++ and Python software, modeling multi-agent interactions, implementing decision-making and path-planning methods, testing in simulation and real-world scenarios, optimizing system performance, and collaborating with autonomy and engineering teams. The role requires expertise in behavior planning, probabilistic models, real-time navigation, debugging, profiling, and scalable software architecture.

Lead design, develop, deploy and support a performant Python backtesting framework for quants, traders and researchers. Provide technical leadership, define architecture and roadmap, ensure code quality and automated testing, collaborate with stakeholders, and grow a global team supporting quantitative index strategies.

Supports UNHCR fundraising database operations, including Salesforce configuration, data maintenance, quality control, donor segmentation, list exports, reporting, dashboards, and campaign fulfillment. Assists with database, e-commerce, data lake, payment gateway, and email marketing integrations and migrations. Contributes to requirements gathering, testing, documentation, user training, GDPR and CNIL compliance, and fundraising performance analysis using Power BI and SQL Server Management Studio.

Design and implement scalable software solutions supporting research workflows and data analysis. Lead technical decisions, develop microservices and APIs, establish engineering standards, optimize cloud infrastructure, and promote CI/CD and DevOps practices. Collaborate across teams, mentor junior engineers, contribute to testing and architecture, and help build an innovative engineering culture within Sanofi’s R&D organization.

Lead C12’s nanofabrication strategy, process development, yield improvement, production scale-up, and process control. Build and manage a growing team of engineers and technicians, resolve technical deviations, guide equipment procurement, and collaborate with chip design, operations, downstream production, external foundries, and research partners. The role balances next-generation R&D with robust, reproducible manufacturing for quantum processors.

Own the full enterprise sales cycle, from prospecting and account planning through negotiation, close, and launch. Build executive relationships, develop outbound strategies, manage complex multi-party sales, lead product workshops, quantify customer value, negotiate commercial agreements, and expand existing accounts. Partner cross-functionally with Product, Engineering, Finance, Solutions Architecture, Partners, and Post Sales to drive growth and refine Stripe’s sales process. Requires fluent French and English communication.

Lead and design scalable backend systems, set technical vision, drive large cross-team projects, raise engineering standards, mentor engineers, and influence company-wide architecture and processes to support product growth and AI initiatives.

Lead enterprise sales for Salesforce Data Foundation, selling MuleSoft and Informatica solutions to strategic accounts. Own go-to-market strategy, new-logo acquisition, C-suite engagement, complex $500K–$1M+ ACV sales cycles, territory planning, forecasting, and pipeline development. Collaborate with solution architects, presales engineers, professional services, and partners while translating data integration and API concepts into executive-level business value.

Design and own mobile RPG and mid-core game features from ideation through implementation and post-release optimization. Collaborate with Product, Analytics, and Art; balance gameplay, pacing, and feel; analyze player behavior and market trends; and use data to support design decisions. Contribute across UI, UX, game logic, and performance while helping evolve Castle Busters into a market-leading title.

Leads Kaluza’s strategic commercial relationship with ENGIE France and broader European accounts. Responsibilities include executive stakeholder management, account strategy, renewals, expansions, upselling, cross-selling, contract negotiations, retention, and commercial governance. The role partners with delivery, product, legal, finance, and support teams during implementation and live service, represents the client internally, manages account health and risk, and contributes to global strategic account management practices.