Senior Software Engineer - React & Java

Join Esri as a Senior Software Development Engineer in Test (SDET) specializing in Network Diagrams. In this role, you will be integral in developing and executing testing strategies to ensure the quality and performance of our network diagram solutions. You will collaborate with cross-functional teams to design robust test plans, automate testing processes,…

Join Esri as a Lead Principal C++ Software Developer focusing on Network Diagram technologies. In this pivotal role, you will design, develop, and optimize software solutions that enhance spatial data visualization and management. You will collaborate with cross-functional teams to deliver robust applications and contribute to innovative solutions that push the boundaries of geographic information systems (GIS).

Join our innovative team at Scaleway as a Software Engineer focusing on Network Products Core. In this role, you will develop and enhance cutting-edge network solutions that empower our cloud infrastructure. You will collaborate with cross-functional teams to design, implement, and optimize network functionalities, ensuring high availability and performance.

About Scaleway Scaleway builds secure, sustainable infrastructure for ambitious organizations across Europe. Since 1999, the company has grown from dedicated servers (Dedibox) to a broad cloud computing portfolio, always focused on simplicity, flexibility, and technical excellence. Today, Scaleway is a recognized name in the European cloud sector. With artificial intelligence gaining ground, Scaleway has doubled down on its mission, backed by a €3 billion investment from the Iliad Group to develop a sovereign AI alternative for Europe. The company’s expanding suite of cloud and AI products, bare metal, containers, serverless, and AI, serves thousands of clients, from major enterprises like France Télévisions and Hachette Livre, to startups such as Photoroom and Biolevate, and public institutions including the City of Copenhagen. Scaleway’s offices are located in Paris, Lille, Toulouse, Rennes, Rouen, Bordeaux, and Lyon. Role Overview: Software Engineer - Network Product Edge (Paris) Scaleway’s rapid growth calls for new talent to join the Network Product Edge team. This group is responsible for enhancing and scaling the technology behind Scaleway’s Load Balancer and Edge Services platforms. What You Will Do Develop, maintain, and improve software and infrastructure components for Load Balancer and Edge Services platforms Help deliver high-performance, secure, and scalable network solutions Support the fast adoption of Scaleway’s products by strengthening the underlying technology stack Location This position is based in Paris.

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 dynamic team at myjobcompany1 as a Test Engineer (H/F) in the vibrant city of Paris! We are seeking a passionate individual to contribute to the development and execution of robust testing strategies to ensure the quality of our innovative software products. As a Test Engineer, you will collaborate closely with our development team, identifying and resolving defects while enhancing overall product performance.

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.

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!

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 dynamic team at believe as a Senior Software Engineer. In this pivotal role, you will leverage your expertise in React and Java to design and implement innovative software solutions that enhance our platform and improve user experience.Your contributions will be vital in driving our projects forward and ensuring the effective delivery of high-quality software. We are looking for a passionate engineer who thrives in a collaborative environment and is eager to tackle complex challenges.

Join our dynamic team at vusiongroupsa as a Senior Software Engineer, where you'll have the opportunity to contribute to innovative projects that shape the future of technology. We are looking for a skilled professional who can bring their expertise in software development, work collaboratively with our R&D department, and drive excellence in our engineering practices.

About UsAt MARGO, our consultants focus on what truly matters: engaging in complex projects that blend intellectual challenge with real business impact. We support the most prominent players in finance, industry, and technology by designing and developing high-performance software solutions, including distributed architectures, cloud platforms, real-time systems, and large-scale critical applications.Why Join the Software Engineering Practice?You will be part of a team led by Paul Blois, who has been the Practice Manager at MARGO for five years. Working alongside him means benefiting from an in-depth understanding of the company, receiving close mentorship in your career development, and contributing to demanding IT projects with significant impact for our clients.Your ResponsibilitiesYou will join a team of 12 professionals tasked with translating complex financial mechanisms into an elegant and resilient software architecture. At the heart of a leading energy company's market activities, you will design the contract modeling engine that manages the group’s risk exposure.As a Senior Python Developer, your challenges will include:- Architecture & Design: Developing and evolving APIs and microservices capable of modeling rich and varied contractual life cycles.- Engineering Excellence: Ensuring code quality and maintainability (Clean Code, extensive unit and integration testing) in an environment where even a minor miscalculation can have direct financial repercussions.- Domain Modeling: Collaborating with business experts to convert complex management rules (gas purchases, P&L tracking, European regulatory constraints) into high-performing data models.- Performance & Scalability: Optimizing services for the aggregation of massive data volumes necessary for real-time risk management tools.

Join Aircall, a groundbreaking AI-driven customer communications platform utilized by over 22,000 businesses globally, enhancing revenue, expediting issue resolution, and empowering customer-facing teams. We are transforming customer interactions by seamlessly integrating voice, SMS, WhatsApp, and AI into a cohesive workspace.Our growth is fueled by a core philosophy: enable teams to work smarter, not harder. With innovations like Aircall's AI Voice Agent automating routine calls, AI Assist simplifying post-call tasks, and AI Assist Pro providing real-time support, our solutions enhance productivity leading to increased revenue and swift resolutions.Headquartered in Paris, we also boast a robust North American presence in Seattle, along with teams across Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product has garnered a loyal customer base, and we are rapidly scaling with the backing of premier investors and a commitment to continuous AI innovation across our offerings.At Aircall, you will be part of a dynamic organization. We are ambitious, product-oriented, and execution-driven, emphasizing impactful work, swift decision-making, and genuine growth.Our Work Culture at Aircall: We are dedicated to our customers, driven by data, and focused on delivering impactful results. We value ownership, continuous learning, and thoughtful speed. If you excel in a collaborative, fast-paced environment where trust and impact are paramount, you'll thrive here.We are seeking a passionate and engaged Senior Software Engineer to enhance our expanding engineering department and contribute to our teams.As a Senior Software Engineer, you will lead the design, development, deployment, and operation of crucial features that deliver value to our customers. Your responsibilities will include ensuring operational excellence, monitoring key metrics, enhancing observability, promoting best practices, and mentoring team members across the Engineering division.Driven by quality, excellence, and agility, you will play a pivotal role in elevating our delivery processes. Utilizing NodeJS and Typescript within a robust back-end framework on AWS, you will tailor solutions to meet varied requirements.

The AI Platform is at the forefront of Datadog’s AI initiatives, encompassing everything from cutting-edge distributed training infrastructure for our state-of-the-art models to the essential frameworks that power Bits AI and LLMObs. We are on a mission to enhance our offerings beyond just model creation, focusing on the development of tools that will empower engineers to deploy production-ready generative AI systems. This includes creating retrieval-augmented pipelines, autonomous agents, and comprehensive evaluation harnesses.We are seeking a Senior Software Engineer to architect and develop this next-generation platform. You will collaborate closely with the Applied AI, product, and core infrastructure teams to deliver:Large-scale experimentation, training, deployment, and monitoring solutionsDeveloper toolchains tailored for agents and other generative AI applicationsLow-latency serving infrastructure that seamlessly integrates AI features into all Datadog productsAt Datadog, we value a vibrant office culture that fosters relationships, sparks creativity, and encourages collaboration. We operate in a hybrid work environment, allowing our employees to achieve a work-life balance that suits their individual needs.

Believe is a music company focused on supporting artists and labels. The team in Paris is looking for a Senior Software Engineer to help shape new projects and improve the digital platform. Role overview This position involves working with teams from different areas to create software that can grow with the company's needs. The work centers on building and improving products that help the music industry adapt and develop. What you will do Work closely with colleagues from various disciplines to design and develop software solutions Contribute technical expertise to projects that expand and strengthen Believe’s digital ecosystem Requirements Strong background in software development Interest in building products that support artists, labels, and the broader music industry Ability to collaborate effectively within cross-functional teams This role is based in Paris and offers the chance to contribute to projects that influence the future of music.

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.

Paris | Full-time | Fluent in French & English The e-commerce landscape is evolving rapidly, yet independent brands often find it challenging to compete with the logistical efficiency of industry giants like Amazon. At Bigblue, we are dedicated to transforming this reality.Our mission is to empower brands by providing access to top-tier operational capabilities, enabling them to grow swiftly while ensuring an exceptional customer experience.Since our inception in 2018, we have developed an innovative tech-driven logistics platform that currently supports over 500 brands, ranging from rapidly expanding direct-to-consumer enterprises to globally recognized names such as MUJI, Aigle, and Cabaïa. With a talented team of 110+ employees across Paris, Madrid, and London, and our proprietary Warehouse Management System (WMS) Atlas, we are tackling logistics challenges that others shy away from — making fulfillment processes faster, smarter, and more sustainable.Backed by over $20 million in funding and trusted by the next generation of e-commerce innovators, we are experiencing rapid growth — aiming to handle 10 million orders in 2024 and embarking on ambitious enterprise expansion. The future is bright, and we’re searching for the right partners to help us lead the charge.

Join Our Team at KovaleeAt Kovalee, established in 2020, we are on a mission to revolutionize the mobile industry by empowering app developers to reach the pinnacle of their niche, irrespective of their resources. Our cutting-edge technology and deep expertise in user acquisition, app store optimization, product enhancement, and monetization enable developers to concentrate on their passion while we accelerate their app's growth. Our successful applications, such as Bend, PepTalk, and ParrotPal, showcase our commitment to excellence and our ability to drive results.Recognized as one of the fastest-growing startups of 2024 by Sifted, we are a diverse team of over 20 professionals from more than 15 nationalities, unified by a common goal: to redefine the mobile app landscape.We are seeking a Senior Software Engineer to become a crucial part of our team, responsible for creating and sustaining the foundation of our publishing platform. In this role, you will collaborate closely with operations to address real-world business challenges while helping us innovate rapidly and ambitiously. You will report directly to the CTO and work alongside another talented software engineer.

Join the dynamic Nexthink Engineering department, where you will be an integral part of a team dedicated to developing the Collectors—advanced endpoint agents utilized by millions of employees. These Collectors play a pivotal role in extracting and interpreting vital information from operating systems, sending it to our powerful data analytics systems, and enhancing user experience by identifying and resolving issues.As a Senior Software Engineer, you will face a series of exciting challenges: • Challenge #1: Develop comprehensive and reliable solutions. • Challenge #2: Create solutions for multiple platforms, leveraging the best features from each. • Challenge #3: Ensure cross-platform compatibility wherever possible.Our engineers thrive on tackling broad, unconventional problems, refining them into actionable solutions. They continuously innovate, prototype new ideas, and measure their impact while upholding our unwavering standards of quality, performance, and security.