Fullstack Java / React Developer H/F

Join Our Mission: We are dedicated to empowering SMEs to thrive in their business endeavors by providing Europe's premier finance workspace. Our platform integrates top-notch tools such as streamlined invoicing, effective spend management, and pre-accounting features, all backed by our dedicated 24/7 support team, ensuring that our clients navigate their financial responsibilities with ease.About Qonto: Founded in July 2017 by Alexandre and Steve, Qonto has quickly established itself as a trusted partner for over 600,000 customers. With a growing team of over 1,600 Qontoers, we proudly feature in the LinkedIn Top Companies ranking in France!Our Core Values:Customer focus | We prioritize our customers in all our endeavors.Ownership | We take responsibility for our roles and strive to achieve results.Teamwork | We simplify collaboration and support each other.Mastery | We constantly seek to improve and elevate standards.Integrity | We act ethically and with respect towards all individuals.Diversity & Inclusion: At Qonto, we are committed to creating an inclusive environment where everyone can succeed. We evaluate applicants based on their skills and potential, fostering diversity with 55% of our team being international, 44% women, and 20% parents. Join us in cultivating a workplace that values diversity and individuality.Learn about our commitment to a fair hiring process.⭐ Your Role:As a Fullstack Engineer, you will play a pivotal role in developing financial tools that empower over 600,000 SMEs to manage their finances efficiently. Collaborating closely with our Head of Engineering, Yanis, you will focus on creating impactful financial features that simplify processes for SMEs and accountants.‍‍ Responsibilities:• Feature Ownership: Take charge of features from conception to deployment, working closely with Product Managers to define technical specifications and deliver results.• Robust Tool Development: Design and implement scalable solutions for pre-accounting functionalities, ensuring a seamless user experience.

Join Qonto as a Payroll Specialist on a fixed-term contract and be part of a dynamic team that is revolutionizing the financial landscape for businesses. In this role, you will manage payroll processes, ensure compliance with regulations, and contribute to enhancing our operational efficiency.

Join our dynamic team at Altersolutions as a Fullstack Developer specializing in .NET and React. In this role, you will leverage your expertise to build and enhance innovative web applications. Your contributions will be pivotal in delivering high-quality software solutions that meet the needs of our clients.

Join our dynamic team at believe as a Senior Fullstack Software Engineer, specializing in PHP and React. In this role, you will be responsible for designing, developing, and maintaining innovative software applications that enhance user experiences and drive business success. Your expertise will contribute significantly to our projects, ensuring high-quality software delivery.

Rejoignez notre Pôle Transformation Numérique en tant que Développeur Fullstack, où vous ferez partie d'une équipe dynamique d'experts en développement de solutions logicielles, dédiée à l'accompagnement de nos clients.Vous serez intégré(e) au sein d'une équipe dédiée chez un leader du secteur de l'assurance, travaillant en mode squad avec des développeurs, testeurs et un Product Owner.Vos responsabilités incluront :Concevoir, développer et maintenir des applications web performantes et évolutives.Créer des APIs REST sécurisées en .NET/C#.Développer des interfaces utilisateurs modernes et intuitives utilisant ReactJS / TypeScript.Collaborer étroitement avec l’équipe produit et les designers pour transformer les exigences en solutions techniques.Assurer la qualité du code à travers des tests unitaires, des revues de code et des pratiques CI/CD.Participer aux choix techniques et à l’architecture du logiciel.Contribuer à l’amélioration continue et au partage de connaissances au sein de l’équipe.

Join Verso, where we are revolutionizing consumer insights with our Consumer Intelligence OS. Our innovative AI-driven platform transforms traditional qualitative research methods by continuously analyzing consumer conversations at scale. Rather than relying on one-off studies, our clients gain a structured and ongoing understanding of their customers.Our mission is to embed consumer insights into every product and marketing decision, creating a real-time, always-on system. We are currently starting with AI-moderated interviews, but our long-term vision is to develop a comprehensive system for consumer understanding powered by dynamic workflows.Backed by Hexa (eFounders), we are building on the success of companies like Aircall, Front, Spendesk, Yousign, and many more.Our founding team brings deep expertise in strategy, technology, and entrepreneurship:Lydia - CEO: HEC graduate with 7 years at BCG (Principal), expert in strategy and consumer goods.Camille - CTO: Dual degree from X/HEC, former lead at CO2 AI, specialized in AI and scalable product development.

Join Qonto as a GRC Engineer and play a crucial role in maintaining our governance, risk, and compliance framework. In this position, you will collaborate with cross-functional teams to ensure that our systems and processes align with regulatory requirements while managing risks effectively. Your expertise will help us to build a secure and compliant environment.

Role overview Qonto is seeking a Legal AI Engineer based in Paris to strengthen legal operations and compliance by applying artificial intelligence. This position bridges engineering and legal teams, focusing on the creation and deployment of AI-driven tools that boost efficiency and accuracy in legal processes. What you will do Design and build AI solutions that address legal workflow needs Work alongside legal and engineering colleagues to spot and develop automation opportunities Contribute to ongoing enhancements in compliance and legal operations using technology Requirements Solid background in artificial intelligence or machine learning Keen interest in legal technology and applying AI to legal matters Drive to influence and improve legal operations

About PreludeAt Prelude, we are pioneering a new standard for user onboarding and authentication in an era where trust, speed, and conversion are paramount.Our innovative solutions streamline user verification, enhancing security and efficiency while transforming authentication into a strategic advantage. Our flagship product boasts the highest price-to-conversion ratio for OTP code delivery, intelligently adapting to utilize the most effective channels in real-time—whether through optimized SMS routing or popular messaging applications like WhatsApp. Additionally, Prelude actively mitigates spam and fraud risks that traditional providers often overlook, thereby safeguarding both profit margins and user experiences.Established in 2022 and supported by prominent venture capital firms, Prelude has rapidly achieved significant market traction and robust financial health, catering to fast-growing companies throughout Europe and making strides into the US market. Authentication is merely the beginning of our journey.With a forward-thinking roadmap and a suite of market-defining products in the pipeline, we are developing a scalable trust platform that empowers businesses to effortlessly onboard users, combat fraud intelligently, and expand confidently across the globe.About Our TeamThe Prelude team consists of former Zenly professionals who have experienced the limitations of current authentication systems firsthand. While developing products that serve millions, we recognized the challenges posed by costly and unreliable SMS authentication, leading to the inception of Prelude.Currently, our team of 40 is based in Paris, dedicated to creating high-performance, secure user onboarding solutions for businesses in Europe and the US. We believe that small, highly skilled teams are more effective than large, fragmented organizations, and we prioritize impact, quality, and agility.We embrace a flat organizational structure that enhances in-person collaboration, facilitating rapid idea exchange, grounded decision-making, and full ownership of our projects.Our core values guide our daily operations:CareWe are deeply invested in our customers, our colleagues, and the quality and reliability of our products.

EXCITING OPPORTUNITY: Fullstack Developer Java/React/AWS! Explore the Apsidian Life and become an Apsidien too //We could have asked Chat GPT to show you why Apside is the IT service company you need, but we prefer you discover it for yourself Discover your future mission // ContextClient: Transportation SectorTeam: Collaborative ExchangesWork Method: AgileRole: Contribute to backend development to evolve the product in line with project needs.Technical Environment: Kotlin/Java 11+, Spring, MongoDB, Git, Kubernetes, AWS MissionCode developmentUnit tests (TDD) and automated functional tests (BDD) and end-to-endPackaged applicationIssue analysis & support for operational problemsMaintain & contribute to CI/CD pipelinesDocumentationDeployment and monitoring of your application across all environments, from development to production. LocationÎle-de-France We offer you the following salary package //Contract: Permanent (CDI)Remuneration: based on profile(We first discuss, understand your skills/aspirations, and then agree on the salary. )Group Benefits: Swile restaurant card, mobility bonus, RTT, remote work agreement, health insurance, referral bonus…Agency Benefits: CE benefits, technical afterwork events, tech lead community, full coverage of health insurance, etc.Training: technical certifications, internal English lessons, access to a training catalog via our e-learning platform (Academy by Apside) or through our partner organizations.

Join Aircall, a revolutionary unicorn in the realm of AI-driven customer communication solutions, utilized by over 22,000 enterprises globally to enhance revenue, expedite issue resolution, and scale customer-facing teams. We are transforming customer interactions by unifying voice, SMS, WhatsApp, and AI into a singular, efficient workspace.Our growth stems from a straightforward philosophy: empower teams to work smarter, not harder. Our AI Voice Agent automates routine calls, AI Assist simplifies post-call tasks, and AI Assist Pro provides real-time support, enabling teams to excel. The outcome is enhanced revenue, quicker resolutions, and teams that grow confidently.Headquartered in Paris, with a robust North American presence in Seattle, Aircall has teams located throughout Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product has garnered immense customer appreciation, and our business is rapidly scaling, bolstered by top-tier investors and driven by swift AI advancements across various product lines.At Aircall, you will be part of a dynamic and ambitious organization. We prioritize product innovation, execution, and making a tangible impact through rapid decision-making and genuine growth.Our Work Culture at Aircall: We are dedicated to our customers, guided by data, and focused on achieving significant results. We value ownership, continuous improvement, and thoughtful speed. If you excel in a collaborative, fast-paced environment where trust and impact are paramount, you will thrive here.We seek a dedicated and enthusiastic Senior Software Engineer to become a vital part of our expanding Communication Platform department, specifically within the Number Management team. You will take charge of designing, developing, deploying, and maintaining business-critical features that bring significant value to our customers.Your daily responsibilities will include advocating for best practices, mentoring team members, and enhancing engineering standards across the organization.Our commitment to quality, excellence, and agility drives our delivery processes, and your role will be pivotal in elevating these standards.You will be working primarily with TypeScript and Ruby, ensuring that our solutions meet the highest standards.

Join us at Verso, a pioneering startup supported by Hexa, as a Founding Fullstack Engineer. In this role, you will play a crucial part in the development of our innovative platform. You will have the opportunity to work on both the front-end and back-end of our applications, contributing to the overall architecture and enhancing user experience.We are looking for passionate engineers who thrive in a startup environment, are eager to take on new challenges, and are ready to shape the future of our company.

Our Mission and Customers: At Qonto, we empower SMEs to thrive by providing Europe’s premier finance workspace, centered around banking and enhanced with innovative financial tools. We take pride in our 4.8 Trustpilot rating, based on over 55,000 reviews. Our culture prioritizes customer satisfaction, evidenced by our impressive Net Promoter Score of 75.Our Journey: Founded in 2017 by Alexandre and Steve, Qonto has expanded to over 1,600 team members serving more than 600,000 customers across eight European nations. We achieved profitability in 2023, and we are just beginning our journey.Our Beliefs: We value skills and potential in our hiring process. With 80+ nationalities represented and 45% of our workforce being women, including 56% in leadership roles, diversity is integral to our identity. We’ve established a discrimination-free hiring process because we believe the best teams are built on merit.AI at Qonto: Artificial Intelligence is a core component of our operations (learn more here). Every Qonto team member has unlimited access to top AI tools. We seek individuals who are willing to experiment, challenge the status quo, and discern when to trust AI versus when to question it.------------------------------------------------------------------------------------------------------

Join Our Team as a Senior Fullstack EngineerAt Capi, we empower businesses in emerging markets to efficiently pay their international suppliers in a straightforward, rapid, and equitable manner.With over $18 million in backing from esteemed investors such as Creandum, Y Combinator, General Catalyst, and notable angel investors from Revolut, Checkout, Stripe, and Remitly, we are committed to constructing the financial infrastructure that emerging markets truly deserve.By streamlining global trade, we enable local businesses to flourish, create more jobs, and drive prosperity within their communities.Our mission is to enhance GDP in emerging markets by making the global financial system more equitable and accessible. We address the challenges of global trade, simplifying the payment process for importers dealing with international suppliers. Our platform is designed to facilitate rapid business expansion, job creation, and serve as a catalyst for the prosperity of their nations.Our diverse team consists of approximately 80 individuals from 10 countries; we are a driven and ambitious group dedicated to making a significant impact in the world. We are excited to welcome more passionate individuals to our team!Explore Capi’s mission & values.Role OverviewYou will become part of a small, high-performing team of engineers and product leaders, influencing the scaling of our platform and increasing our impact.From day one, you will collaborate closely with the founding team based in London and Paris to shape our product vision and the various components of our technical architecture. As we expand our products and strengthen our presence in emerging markets, you will play a pivotal role in developing technology that addresses customer challenges.To succeed, you should possess empathy and curiosity to uncover the root of issues, along with the creativity to devise solutions that balance impact, effort, and user satisfaction.

Join Theodo and Be Part of Our Success Story!Since 2009, Theodo has been empowering innovative companies in the design, development, and deployment of ingenious digital products, leveraging the best technology and Lean methodologies.Our distinctive approach is founded on three key principles:- We have cultivated recognized expertise in essential product design and development technologies;- Regardless of the project's phase, creating value for our clients is our top priority in every decision;- We recruit the finest digital talents and foster their ingenuity through Lean practices.Theodo has experienced remarkable growth over the past 15 years: our teams comprise over 700 Theodoers, primarily Software Engineers passionate about technology and continuous improvement. With this growth, the group has organized into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) or by industry (Fintech, Govtech, Healthtech, Consumer Products Goods). By 2025, Theodo aims to generate €100M in revenue.Your Team:You will join a community of over 120 tech enthusiasts at Theodo: software engineers, tech leads, engineering managers, and architects, where you can share ideas, learn, and grow every day. At Theodo, our tech teams work in project groups tailored to the unique needs of each client. You will be part of a small team of Theodoers (4 to 5 members), including Software Engineers, a Tech Lead, and a Product Manager. Together, you will collaborate closely with the client through regular communications to share progress, deepen the understanding of their challenges, and evolve the product to meet user needs effectively. Your Future Responsibilities:As a Fullstack Software Engineer at Theodo, your mission will involve designing and developing useful, high-performing, and sustainable digital products to address the challenges faced by our clients and their users.

Discover Theodo's Journey and SuccessSince 2009, Theodo has been empowering innovative companies in crafting, developing, and launching ingenious digital products, leveraging cutting-edge technology and a Lean approach.Our distinctive methodology is built upon three core principles:- We have honed acknowledged expertise in key technologies for product design and development;- At every stage of the project, our priority is to create value for our clients;- We recruit the finest digital talents and nurture their ingenuity through a Lean approach.Theodo has experienced remarkable growth over the past 15 years, gathering over 700 passionate Theodoers, primarily Software Engineers dedicated to technology and continuous improvement. As we expand, our group has organized into specialized entities by technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and by industry (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo aims to achieve a revenue of €100M.Your Future Team:You will join a community of over 120 Theodo tech professionals: software engineers, tech leads, engineering managers, and architects, where you can exchange, learn, and grow daily.At Theodo, tech teams work on project-based teams, tailored to meet each client's needs. You will be part of a small team of Theodoers (4 to 5 members), including Software Engineers, a Tech Lead, and a Product Manager. Together, you will collaborate closely with the client, with regular updates to share progress, deepen understanding of their challenges, and evolve the product to align with user needs.Your Future Responsibilities:As a Fullstack Software Engineer at Theodo, your mission will be to design and develop valuable, high-performance, and sustainable digital products to address the challenges faced by our clients and their users.

Blockchain.com is at the forefront of revolutionizing the financial landscape through cryptocurrency. As the leading and fastest-growing global crypto company, we empower millions of individuals around the globe to access cryptocurrency securely. Since our inception in 2011, we have gained the trust of over 90 million wallet holders and more than 40 million verified users, facilitating over $1 trillion in crypto transactions.We are on the hunt for a talented Front-End Engineer with a passion for crypto and Web3 technologies to join our dynamic engineering team. In this role, you will work on developing innovative Blockchain applications that are among the most popular in the crypto ecosystem. Your contributions will shape user interfaces that power future wallets, block explorers, financial and market data products, along with cutting-edge visualizations.Our engineering teams engage in all phases of the product life cycle, encompassing idea generation, design, prototyping, planning, execution, and deployment.

About Us and Our Vision: At Qonto, we empower small and medium enterprises (SMEs) to thrive by providing Europe’s premier finance platform, which integrates banking and innovative financial tools. Our commitment to excellence is reflected in our 4.8-star rating on Trustpilot, based on over 55,000 reviews. We prioritize customer satisfaction, evidenced by our impressive Net Promoter Score of 75.Our Growth Story: Founded in 2017 by Alexandre and Steve, Qonto has expanded to a team of over 1,600 dedicated professionals, catering to more than 600,000 customers across 8 European nations. With profitability achieved in 2023, we are just beginning our journey.Our Core Values: We value skills and potential in our hiring process. Our team boasts over 80 nationalities, with 45% women and 56% of our leadership positions held by women, making diversity an integral part of our identity. We have established a bias-free hiring process because we believe the best teams are formed on merit.AI at Qonto: Artificial Intelligence is fundamental to our operations (learn more). Every member of our team has unlimited access to cutting-edge AI tools. We seek individuals who are willing to experiment, challenge norms, and understand when to trust and question AI.

Join us as a Frontend Engineer specializing in TypeScript and React at connecthum, an innovative AI infrastructure startup dedicated to developing advanced solutions for the safety and management of large-scale AI systems.About connecthum:A pioneering AI-native product company focused on AI safety and infrastructure.Supported by a diverse group of international investors.Expertly handling large volumes of AI traffic within enterprise environments.Creating and optimizing proprietary models for enhanced performance and reliability.A compact, highly skilled team committed to rapid delivery.Our mission is to develop a robust control and evaluation framework for AI systems, empowering organizations to define, test, and regulate AI behaviors in real-world contexts.Your Contributions:Take ownership of and deliver comprehensive product features across the frontend and full stack.Craft user-friendly, high-quality UX designs that simplify complex AI workflows.Develop seamless product flows, from initial onboarding to advanced analytical capabilities.Work collaboratively with founders, product managers, designers, machine learning experts, and researchers.Translate state-of-the-art AI functionalities into dependable user-centric tools.Lead the product development lifecycle while shaping technical direction and product strategies.This hands-on position lies at the intersection of product development, AI, and engineering.Technical Environment:Proficient in TypeScript, React, and Next.js.Utilizing Tailwind CSS for design systems.Integrating with LLM APIs (OpenAI API, function calling, context orchestration).Creating data visualization and analysis interfaces.Building full-stack product architecture.Ensuring effective production deployment and system observability.Your Skills:Demonstrated expertise in TypeScript, React, and Next.js.Experience in developing product features from concept to deployment.Comfortable working with LLM APIs and navigating AI product workflows.Proven ability to collaborate with multidisciplinary teams.