Senior Product Engineer at The Flex | Paris

Become a pivotal member of a visionary team that is reshaping global living standards.At The Flex, our mission is to transform the rental experience, making it instantaneous, intelligent, and seamless—much like booking a ride.Our bold ambition? To empower individuals to live anywhere, at any time, without the usual hassles.Utilizing our advanced automation engine, Base360.ai, we are crafting a revolutionary operating system for modern renting—integrating property data, streamlining operations, and facilitating effortless stays across the globe.If you are passionate about developing products from start to finish, have a keen eye for user experience, and thrive on managing tangible systems that impact real users, this role is tailored for you. What You'll CreateAs a Senior Product Engineer, you will navigate the intersection of product, engineering, and operations.You will take ownership of features from conception to deployment—crafting the product, designing the architecture, coding, and implementing enhancements that significantly affect guests, operators, and partners.This position is ideal for engineers who prioritize product development over ticket resolution and are deeply invested in usability, performance, and tangible results. Your Key ResponsibilitiesOwn Product Features End-to-EndDesign, create, and enhance core product experiences across both web applications and APIs.Build for UsersConvert genuine operational and user challenges into straightforward, user-friendly product solutions.Ship Fast, Learn FasterRelease frequently, collect feedback, and continuously iterate.Design Scalable SystemsDevelop clear, maintainable architectures that grow alongside the platform.Automate the ExperienceLeverage automation and smart workflows to eliminate friction for both guests and operators.Collaborate CloselyPartner closely with product, design, data, and operations teams to transform ideas into impactful solutions. Ideal Candidate ProfileProven experience in developing user-facing products as a senior engineer.Proficient in working across frontend, backend, and APIs.Familiarity with modern web technologies (React, Node.js, cloud-native platforms).A strong product-oriented mindset—focused on understanding why a feature is developed, not just how.

Join our innovative team that is transforming the future of global living.At The Flex, we envision a world where renting a home is instant, intelligent, and seamless—much like booking a ride. Our mission is ambitious: to empower anyone to live anywhere, anytime, without hassle.Driven by Base360.ai, our unique automation engine, we are crafting the operating system for modern renting—integrating property data, streamlining operations, and facilitating smooth stays across continents.If you are passionate about complex systems, automation, and developing software that has real-world applications, this position offers you the opportunity to take ownership and make a significant impact. What You'll CreateAs a Senior Software Engineer, you will design, develop, and scale essential components of The Flex platform—from core services and APIs to automation workflows and real-time systems.You will work with considerable autonomy, managing problems from start to finish and directly influencing architectural decisions while remaining deeply engaged with production code.This role is for engineers who prioritize impact over meetings and take pride in constructing systems that are reliable, elegant, and scalable. Your ObjectivesDevelop Core SystemsCreate and maintain scalable services that enhance bookings, payments, availability, pricing, and guest experiences.Design Robust APIsEstablish clean, well-structured APIs that connect Base360.ai with internal tools and external partners.Automate OperationsConstruct event-driven workflows that eradicate manual tasks and unlock operational efficiencies.Deploy with AssuranceImplement and manage cloud-native infrastructure on AWS with an emphasis on reliability, security, and performance.Tackle Meaningful ChallengesEngage in real-time booking synchronization, pricing intelligence, keyless access systems, AI-driven alerts, and live operational dashboards.Collaborate for SuccessPartner closely with product, data, and operations teams to transform complex requirements into straightforward, effective systems. Ideal Candidate ProfileExtensive experience in building production systems with Node.js, React, and AWS.Solid understanding of software design principles and best practices.Proficient with CI/CD practices and tools.Strong communication skills and a collaborative mindset.

Join our innovative team that is reshaping the future of global living.At The Flex, we envision a world where renting a home is instant, intelligent, and effortless — as seamless as booking a ride. Our ambitious goal is to enable anyone to live anywhere, anytime, without friction.Utilizing Base360.ai, our proprietary automation engine, we’re constructing the operating system for modern renting — integrating property data, orchestrating operations, and facilitating seamless stays across continents.If you are passionate about technical ownership, system architecture, and building platforms that function at real-world scale, this role places you at the heart of how millions of people move, live, and interact with the world.

At The Flex, we envision a future where renting a home is as instantaneous, intelligent, and hassle-free as booking a ride.Our ambitious goal is to empower individuals to live anywhere, at any time, without the usual barriers.Driven by our innovative Base360.ai automation platform, we are crafting the ultimate operating system for modern rentals — seamlessly integrating property data, streamlining operations, and facilitating effortless stays worldwide.If you are passionate about web technologies, API-driven solutions, automation, and scalable operations, this is your chance to influence how millions navigate, reside, and engage with the world. What You’ll BuildAs a Full-Stack Engineer (Web & APIs), you will be responsible for designing, developing, and scaling the essential web applications and APIs that drive The Flex platform — enabling immediate bookings, smart access, automated workflows, and predictive operations.Your role will encompass all aspects of frontend design, backend development, and cloud infrastructure, transforming intricate operational hurdles into elegant, scalable, and API-centric solutions.You won’t merely deploy features.You will enhance efficiency, unlock automation, and lay the groundwork for a sophisticated, global rental network. Your MissionBuild the PlatformCreate fast, dependable, and scalable web applications and APIs that facilitate bookings, payments, availability, and guest interactions.Design API-First SystemsDevelop robust, well-documented APIs that connect Base360.ai to internal systems and external partners.Automate at ScaleConstruct event-driven services and automated workflows to eradicate manual processes across the organization.Connect the EcosystemImplement impactful integrations with partners including Airbnb, Stripe, Hostaway, and Twilio.Deploy with ConfidenceLaunch and maintain serverless infrastructure on AWS, optimized for speed, reliability, and global reach.Solve Real ProblemsAddress challenges such as real-time booking synchronization, pricing intelligence, keyless access systems, AI-driven alerts, and live operational dashboards.Build With PurposeWork closely with product, data, and operations teams to transform concepts into tangible, measurable outcomes.

Become part of a visionary team that is transforming the future of global living from the ground up.At The Flex, we envision a world where renting a home is instant, smart, and effortless — as seamless as hailing a ride. Our bold ambition is to empower anyone to live anywhere, anytime, without any friction.Leveraging our proprietary automation engine, Base360.ai, we are constructing the operating system for modern rental experiences — linking property data, orchestrating operations, and facilitating seamless stays across the globe.This is not just another job where you merely handle tasks; this is an exceptional opportunity to establish the technical foundation of a groundbreaking company and shape the operational framework of a global platform at scale. What You’ll BuildAs a Founding Engineer, you will contribute to the design, construction, and scaling of the core technology that underpins The Flex, starting from scratch.Your responsibilities will span across product, engineering, and operations, where you will take ownership of systems from end-to-end: web applications, APIs, automation pipelines, integrations, and cloud infrastructure.You will make impactful architectural decisions early on — decisions that will influence the company for years to come — while rapidly converting ideas into production systems utilized in the real world.If you thrive in an environment of ambiguity, ownership, and building tangible solutions, this role is tailor-made for you. Your MissionBuild from Zero to OneCreate and implement the foundational architecture for bookings, payments, availability, and guest experience.Own the StackDevelop across frontend, backend, APIs, and cloud infrastructure — selecting tools and patterns that will scale effectively.Automate the BusinessTransform manual processes into event-driven workflows and intelligent automation from day one.Integrate the EcosystemEstablish deep integrations with platforms like Airbnb, Stripe, Hostaway, and Twilio.Ship RelentlesslyDeploy, monitor, and iterate on production systems with speed, reliability, and practicality.Solve Real-World ProblemsAddress challenges such as real-time booking synchronization, pricing intelligence, keyless access logic, AI-driven alerts, and operational dashboards.Set the Technical DNADefine engineering standards, best practices, and foster a culture of quality, ownership, and execution.

Join Capi as a Product EngineerCapi is revolutionizing the financial infrastructure for trade in emerging markets. With over $18M in funding from prestigious investors such as Creandum, Y Combinator, and General Catalyst, we are committed to making global trade easier and more accessible, enabling local businesses to thrive and contribute to their communities’ prosperity.Our mission is to enhance GDP in emerging markets by creating a more equitable global financial system. We simplify the process for importers to pay their international suppliers, allowing businesses to expand rapidly, create jobs, and drive prosperity in their countries.Our diverse team of approximately 80 passionate individuals spans 10 countries, united by a shared ambition to make a tangible impact in the world. We are looking for driven individuals to join us in this mission!Role OverviewAs a Product Engineer, you'll be an integral part of a dynamic team of engineers and product leaders, collaborating closely with our founding team across London and Paris. You'll have the opportunity to shape the product vision and technical architecture from day one. Your role will involve building innovative technology solutions that address customer challenges as we expand our reach in emerging markets.To succeed, you should possess a deep sense of empathy and curiosity to understand the root of problems, coupled with the creativity to devise solutions that balance impact, effort, and user satisfaction.Key ResponsibilitiesEngage in the product lifecycle from ideation to UI development, backend logic, deployment, and feedback measurement.Communicate updates about new features, gathering feedback pre-implementation and explaining details at launch.Define and oversee delivery milestones, ensuring alignment between engineering and product priorities.

Join our innovative product team dedicated to enhancing cybersecurity awareness.At tryriot, we aim to promote effective cybersecurity practices among employees in an engaging way—think of us as Duolingo but tailored for cybersecurity learning.Our platform facilitates an easy rollout of cybersecurity awareness programs by delivering quick, chat-based courses lasting just four minutes. After these courses, we simulate phishing attacks to prepare employees to recognize and respond to potential threats safely.Founded in 2020, we have successfully raised $45 million from esteemed investors including Y Combinator, Base10, Funders Club, and Frst Capital. Currently, we protect over 2 million employees across 2,000 companies globally, including major names like Intercom, Deel, and Deezer.Cybersecurity is a pressing concern that impacts organizations of all sizes. Unfortunately, the current culture around cybersecurity in many workplaces is lacking, making employees the most vulnerable targets for cybercriminals. We are on a mission to transform this culture for the better.As a Senior Product Designer, you will be a key player in our Product team, collaborating closely with our CEO (Benjamin), CTO (Louis), and the Senior Product Designer (Hugo), along with various cross-functional teams. Your role will involve shaping and executing our product roadmap, ensuring we deliver valuable, user-friendly, and beautifully designed products through intentional and user-centric design strategies.

Join our dynamic team at iliad-free, where you will take the helm of significant national and international projects. Your technical expertise will enhance the experience of millions of subscribers, whether it’s streamlining their in-store journey or managing our information systems in the Caribbean. Main ResponsibilitiesGather and analyze requirements from stakeholders to ensure clarity and relevance.Challenge the needs presented to guarantee their significance and added value.Develop and maintain the product roadmap while proactively communicating updates.Engage regularly with all project stakeholders to ensure alignment.Work closely with the team to prioritize tasks and organize workflows effectively.Promote the adoption of agile practices tailored to the team's needs. 

Are you looking to join a leading fintech company in credit and insurance, known for its strong growth, innovation, and an abundance of projects? If so, this opportunity could be perfect for you!As part of the Data, AI & CRM department, you will join the Data for Business team responsible for developing data and AI products across all our operations.In an agile environment, you will be part of a team of 5, including data analysts, data engineers, and a Product Manager.Your responsibilities :Define, design, and implement strategies related to the Data Platform:Architecture (currently using BigQuery, Cloud Storage, Dataflow, Pub/Sub, Cloud Composer, Azure exposure) in collaboration with the Architecture teams to ensure cost-effective availability of data;Ensure Data Platform security by working closely with the Group's Cybersecurity teams;Functional coverage (tools, business functions) for the Group and feeding the Bronze layer, which includes implementing and maintaining reliable and efficient data pipelines using Python (ETL/ELT approaches);Build the Silver layer (customer references, opportunities, products, consent, etc.) aligned with business needs, including implementing and maintaining DBT pipelines and providing meta data, especially data models;Monitor activity to ensure data reliability for all our operations.Define, design, and implement the data governance strategy:Contribute to the implementation of data governance (Fluidity, Data Quality, outreach, cultural awareness) with business units and data consumers (Data Analysts, Finance, Data Scientists, etc.).Organize the framework and processes:Establish and promote modern engineering practices: CI/CD, automated testing, infrastructure as code, GenAI for Data, MCP Data Platform, particularly in collaboration with Software Engineering teams.Communicate and collaborate:Be the point of reference for the data engineering team (team leadership, code reviews, skills development) and assist in team recruitment.Maintain an active watch on cloud and data technologies to propose continuous improvement initiatives.

Job DescriptionJoin our dynamic product team at nopillo, where you will take charge of enhancing the post-payment user experience for our Tax & Accounting products. This is an exciting opportunity following the recent launch of two innovative offerings.Expected OutcomesYour mission will be to stabilize and scale our “location nue” and SCI products, ensuring a top-notch user experience with a NPS ≥ 7 for 1,000 users at a controlled cost, achieving a gross margin ≥ 70% by the end of 2026.How? By creating a self-service journey for our “location nue” offering, which currently has an average basket size 2-3 times lower than our flagship product.You'll also focus on improving our flagship LMNP product, currently serving approximately 10,000 users, aiming for a gross margin of 85% and an NPS ≥ 8.How? Collaborating with our technical team to push the boundaries of LLM models and deliver transparent, high-quality tax advice at scale.Additionally, you will integrate the Tax & Accounting offerings into our developing wealth management platform, aiming for 50% of Tax & Accounting users to engage with at least one other product on the platform.How? Leveraging Tax & Accounting data to propose additional savings to our users.Finally, work closely with our subject matter expert to ensure our product's compliance and convert fiscal instability into a source of opportunity for our users.Our Tech & Product OrganizationAt nopillo, we have strong beliefs about how a Tech & Product team should operate and are seeking a PM who shares these values. We believe that PMs should function as “business first” profiles, identifying and prioritizing problems to solve. The resolution of these issues is primarily handled by autonomous product engineers during the delivery phase, allowing the PM to prepare for the next sprint based on the organization's business challenges.

At Swile, we are committed to enhancing professional experiences through innovative product solutions that alleviate daily challenges and elevate employee satisfaction. Our cutting-edge offerings in Fintech, Travel, HR, and Employee Benefits serve over 5.5 million users across 85,000 companies in France and Brazil, making a significant impact on the workplace.As a Senior Software Engineer, you will play a pivotal role in problem-solving, blending creativity with technical expertise. Your focus will be on delivering high-quality solutions swiftly and effectively, addressing both business and engineering challenges with innovative strategies rather than being restricted to specific technologies.

Join Our Team as a Product EngineerAt Capi, we empower businesses in emerging markets to make international supplier payments efficiently and fairly.With over $18 million in funding from prestigious investors like Creandum, Y Combinator, General Catalyst, and notable angels from Revolut, Checkout, Stripe, and Remitly, we are on a mission to build the financial infrastructure that emerging markets truly deserve.Our goal is to simplify global trade, enabling local businesses to thrive, hire more staff, and drive economic prosperity within their communities.We aim to enhance GDP growth in emerging markets by making the global financial system more equitable and accessible. By addressing global trade challenges, we facilitate smoother payments for importers to their international suppliers, thereby helping businesses expand and create job opportunities.Our dynamic team of approximately 80 talented individuals spans across 10 countries, all driven by ambition and a desire to make a significant impact on the world. We are eager to welcome more passionate individuals to our team!Explore Capi’s mission & values.Role OverviewAs a Product Engineer, you will be part of a close-knit, high-achieving team of engineers and product leaders who are crucial in scaling our platform and enhancing our impact.From day one, you will work alongside the founding team in London and Paris, contributing to the product vision and influencing all facets of our technical architecture. This role is vital as we scale our offerings and strengthen our presence in emerging markets, creating technology solutions that address real customer challenges.To excel in this position, you must possess a strong sense of empathy and curiosity to uncover the root of issues, along with the creativity to develop solutions that balance impact, effort, and user satisfaction.Key ResponsibilitiesContribute throughout the product lifecycle, from ideation to UI design, backend logic development, deployment, and feedback analysis.Engage in effective internal and external communication regarding new features, including gathering pre-implementation feedback and presenting features at launch.Define and manage project milestones, ensuring alignment between engineering and product priorities.

Are you enthusiastic about Software Engineering, Data Engineering, or Product/Project Management? Join our dynamic team at Ogury by submitting your application—we will consider you for upcoming roles.This is an evergreen position, which means we are always reviewing applications and will connect with you when a fitting opportunity arises.Ogury is a pioneering global adtech firm that provides Personified Advertising solutions that respect user privacy, focusing on targeting personas rather than individuals. We aim to deliver significant audience insights and performance metrics that are unmatched in the AdTech landscape. Founded in 2014, Ogury has grown into a vibrant organization with over 500 professionals across 17 countries. We celebrate diversity and inclusion, fostering a unique workplace culture where all team members feel valued and safe to express their authentic selves. Together, we are reshaping the adtech industry with values that promote excellence, a leadership-driven mindset, and an inclusive environment where every Ogurian is engaged and feels a sense of belonging.

About H H focuses on advancing superintelligence through agentic AI. The company’s mission centers on automating complex, multi-step tasks that people usually handle, aiming for AI agents to help realize the full range of human potential. H seeks talented AI professionals who care deeply about responsible and safe development, as well as technical progress in agentic systems. The culture values openness, ongoing learning, and teamwork. Every team member’s input matters here. Product Engineering at H The Product Engineering team develops H’s Enterprise Platform, which provides customers with tools and services for essential operational needs. This platform supports large-scale computer-use agents, manages complex workflows, and offers a suite for observability, troubleshooting, and evaluation. Product Engineering connects AI research with practical applications and works closely with teams across the company.

Join us at Believe as a Senior Product Designer, where you will play a pivotal role in shaping user experiences that enhance our digital offerings. You will collaborate with cross-functional teams to design intuitive interfaces and craft compelling user journeys that resonate with our diverse audience.

About UsAt Ankorstore, we empower independent brands and retailers to flourish by simplifying, accelerating, and enhancing the profitability of wholesale transactions.We are constructing the infrastructure that drives modern wholesale for brands—facilitating their discovery by the right retailers, streamlining ordering processes, logistics, and financing—enabling both parties to collaborate under more sustainable conditions.As a Senior Analytics Engineer, you will play a crucial role in enabling Ankorstore’s teams to make informed, data-driven decisions by designing, developing, and maintaining high-quality analytical data models.You will collaborate closely with internal customer teams (Product, Engineering, Finance & Operations) to identify their analytical requirements, prioritize initiatives, and deliver reliable data assets that support both daily decision-making and long-term strategic initiatives.You will be part of a dedicated team consisting of a Platform Lead, a Data Engineer, and three Analytics Engineers.

Overview: We are seeking a talented Product Engineer specializing in Backend Development with Rust to take charge of and enhance the foundational systems that ensure AI safety at a large scale. Your role will involve constructing APIs capable of managing hundreds of millions of requests, implementing real-time policy enforcement, and developing high-throughput data pipelines.About UsWhite Circle is at the forefront of AI Safety, creating the essential safety, reliability, and optimization framework for AI systems. Our platform is built on policies—easily understandable natural-language rules that outline appropriate AI model behavior. We automatically test, enforce, and continuously refine these policies on a massive scale.We have secured $11M in funding from leading investors, founders, and executives from OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, Sentry, and others.Our systems process over one hundred million API calls each month.We optimize and train our own LLMs to operate more swiftly and cost-effectively than any publicly available or proprietary models.As a compact and highly focused team, we welcome those eager to tackle challenging problems, deliver their work to production swiftly, and actively shape the future of AI safety.Your Responsibilities:Design and implement backend services in Rust that facilitate real-time policy evaluations at scale, ensuring low latency and high reliability.Take ownership of features from inception to deployment: API design, database schema development, and continuous monitoring and iteration.Engage with different layers of the stack as needed; we prioritize problem-solving over rigid role definitions.Enhance system performance and reliability through connection pooling, caching strategies, query optimization, and observability practices.Collaborate directly with product managers, researchers, and ML teams to convert requirements into effective production systems.Ideal Candidate:You have experience building and deploying backend systems in Rust—beyond mere tutorials, you have real-world production experience.You are well-versed in async Rust (Tokio), web frameworks (Axum, Actix), and database interaction patterns.You possess strong system design fundamentals, capable of assessing trade-offs, failure modes, and scalability.You have hands-on experience with PostgreSQL, adept at crafting efficient queries and designing schemas.

We are seeking a talented and experienced Senior Software Engineer to join our dynamic team at believe. In this role, you will be responsible for designing, developing, and maintaining high-quality software solutions that meet the needs of our users. You will collaborate closely with cross-functional teams to understand requirements and implement innovative solutions that drive our mission forward.The ideal candidate is passionate about technology, has a strong foundation in software engineering principles, and is eager to tackle complex challenges. If you thrive in a fast-paced environment and are looking to make a significant impact, we want to hear from you!

At AREA 17, we strive to make the world more open, resilient, and optimistic.We collaborate with clients we admire and trust across various sectors, including Saint Laurent, the Lucas Museum, the International Energy Agency, the Louis Vuitton Foundation, and The New York Times. We build lasting partnerships by creating value through brands, experiences, and technology.We are seeking a Senior Technical Product Manager to coordinate our Global Care program. Managing a significant client portfolio from our New York and Paris studios, you will bridge the gap between technical maintenance and client strategy.Job OverviewAs a Senior Technical Product Manager at AREA 17, you will be responsible for ensuring our clients' websites operate smoothly and undergo continuous improvement. Leveraging your development experience, you will conduct initial technical triage, proactively assess system states, and lead a team of engineers dedicated to daily incident management and long-term platform evolution.Key ResponsibilitiesTechnical Product ManagementBacklog Management: Evaluate incoming incident tickets, investigate code, logs, and database issues before assigning them to the technical team.Sprint Orchestration: Translate maintenance needs and bug reports into actionable technical tasks, managing weekly sprints across the portfolio.Architectural Advisory: Work with engineers to assess the feasibility of requested updates and guide decisions on technical debt, security patches, and platform updates (e.g., CMS updates).Proactive Monitoring: Regularly audit monitoring tools (Uptime, Performance, security scans) to identify trends, prevent outages, and propose performance optimizations.Global Client LeadershipOnboarding: Lead the transition of new projects into the Care program, ensuring the scope, processes, and expectations are clearly understood by the client from day one.Global Liaison: Serve as the primary technical contact for clients in North America and Europe, clearly articulating technical challenges.Communication: Drive the communication strategy during critical outages, providing real-time updates and drafting incident reports that explain root causes and corrective actions.

Join Vizzia as a Senior Data Engineer and play a pivotal role in transforming data into actionable insights. Collaborate with cross-functional teams to design and implement robust data pipelines and solutions that enhance our analytics capabilities.