Senior Fullstack Developer (NodeJS) - Remote or Onsite

Join our innovative team at Free2Move as a Lead Senior Fullstack Developer (H/F) to drive the industrialization of our development processes.EnvironmentYou will become an integral part of a dynamic technical team comprising around thirty talented individuals in a warm and enjoyable work atmosphere. You have the flexibility to choose your working setup: it's …

Role overview Nexton is looking for a Fullstack Developer with deep experience in .NET and Angular to join the Paris office. This position covers both front-end and back-end work, supporting web applications throughout their lifecycle, from initial design to deployment. What you will do Collaborate with colleagues from various disciplines to develop and improve web applications Design, build, and maintain features using .NET and Angular Prioritize performance and responsiveness to ensure a seamless user experience Requirements Strong experience working with both .NET and Angular Ability to work effectively with team members from different backgrounds Commitment to writing high-quality code and delivering practical solutions This role is based in Paris.

Join Meritis as a C#/Angular Developer and play a vital role in the dynamic world of financial markets. As part of our innovative team based in Paris, you will be responsible for developing cutting-edge applications that drive our financial solutions.

Join our dynamic team at Meritis as a C# Front Office Developer (H/F) in the vibrant city of Paris. We are looking for an innovative and tech-savvy developer who is passionate about creating impactful software solutions for our clients in the finance sector. In this role, you will be responsible for developing, enhancing, and maintaining our front office applications using C#. If you thrive in a collaborative environment and are eager to take on new challenges, we would love to hear from you!

About the Role Meritis is hiring a C# Developer to join the team in Paris. This role involves contributing to a range of technical projects that use C# in meaningful ways. The team values fresh ideas and technical skill, and welcomes developers who enjoy solving complex problems. What You'll Do Work on projects that use C# to address real business needs Collaborate with colleagues to design and build new features Contribute ideas and technical expertise to improve project outcomes Location This position is based in Paris.

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).

Meritis is seeking a C++ Developer to focus on Fixed Income projects in Paris. This position centers on building and refining financial applications for clients in banking and finance. Role overview The C++ Developer will design, implement, and optimize software that supports critical financial operations. Projects involve close collaboration with technical teams and stakeholders in the finance sector. What you will do Develop and maintain C++ applications tailored to fixed income workflows Contribute to the design and optimization of financial systems Work alongside other developers and finance professionals to deliver reliable solutions Requirements Experience with C++ development Interest in financial markets, especially fixed income Ability to work collaboratively within a team

Theodo: A Journey of Innovation and SuccessSince 2009, Theodo has been a driving force in supporting innovative businesses with the design, development, and deployment of cutting-edge digital products. We leverage the best of technology combined with Lean methodologies.With 15 years of exceptional growth, Theodo's team of over 700 dedicated professionals, primarily Software Engineers, are passionate about technology and continuous improvement. As we expand, we have structured our expertise into specialized entities focusing on different technologies (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industries (Fintech, Govtech, Healthtech, Consumer Goods). By 2025, Theodo is projected to achieve a revenue of €100M.At Theodo GovTech, we partner with our clients—government ministries, local authorities, and major public operators—to design, develop, and maintain accessible, sustainable, and socially beneficial digital products.Joining our adventure means sharing a common ambition: to harness digital solutions to enhance public action efficiency and improve the daily lives of both agents and users.Why Are We Hiring?We aim to showcase Theodo's expertise in the public sector by becoming the go-to partner for administrations to implement their public policies digitally and swiftly.We are in search of a Software Engineer at Theodo GovTech to ensure public actors' satisfaction by creating products that meet the needs for improving the quality of public service provided to citizens, associations, and businesses.Your Key Responsibilities:- Produce high-quality code that is defect-free, utilizing practices such as code reviews and pair programming, with a strong affinity for Agile development (particularly Scrum).- Address issues encountered and continuously improve your working methods (Daily, Problem solving, Retrospective).- Take ownership of quality at the ticket level, including writing automated tests.- Find smart and pragmatic solutions to simplify the product and lead the design of multiple user stories.Career Advancement Opportunities

As a Tech Lead at CAPFI Technology, you will embark on two primary missions: Develop containerized full stack applications and microservices, adhering to Craftsman practices (TDD, BDD, DDD).Analyze architecture for improvement assessments.Design and develop .NET applications.Implement continuous integration through automated testing (Jenkins, GitLab, Bitbucket, etc.) and continuous deployment (Ansible, AWX, Octopus, GitLab, etc.).Manage version control (Git, TFS), create test plans, and participate in tests not covered by unit tests. You are the right candidate if: You are eager to challenge yourself in a rich and demanding environment.You are curious, organized, and passionate about finance and/or IT.You possess technical (SQL) and/or functional knowledge in financial markets.You hold a degree from an engineering school, business school, or equivalent.You wish to evolve in contexts driven by Agile ceremonies.You have strong interpersonal skills and enjoy teamwork.You are looking to thrive in English-speaking environments. What we offer you CAPFI is a vibrant company that...

Join Theodo and Shape the Future of Public Digital ServicesSince 2009, Theodo has successfully partnered with innovative businesses to design, develop, and deploy ingenious digital products by harnessing cutting-edge technology and Lean methodologies.With exceptional growth over the past 15 years, Theodo now boasts a dynamic team of over 700 passionate Software Engineers dedicated to continuous improvement. Our organization has evolved into specialized entities focusing on technology (Theodo Apps, Theodo Cloud, Theodo Data & AI) and industry sectors (Fintech, Govtech, Healthtech, Consumer Products). By 2025, Theodo is projected to achieve €100M in revenue.At Theodo GovTech, we work alongside our clients—including ministries, local authorities, and major public operators—to create, develop, and maintain sustainable, accessible, and beneficial digital products for society. Joining our mission means sharing a common ambition: leveraging technology to enhance public action efficiency and improve the daily lives of agents and citizens alike.Why Are We Hiring?We are seeking a Lead Developer at Theodo GovTech to ensure public stakeholders' satisfaction through the creation of products that enhance the quality of public services delivered to citizens, associations, and enterprises.Your Responsibilities Will Be Divided Into Three Areas:- Ensure Project Delivery and QualityEngage in the most complex designs and features, ensuring that these can be implemented effectively by the development teams. Guarantee the quality of the architecture and the code produced through Theodo's methodologies (3S) and routines (code reviews).- Serve as the Client's Main ContactMaintain continuous client satisfaction by participating in regular meetings (backlog refinement, daily stand-ups, and ceremonies).- Oversee Software Engineer Success on the ProjectMentor your team through routines like code reviews and pair programming. Conduct one-on-one sessions with each team member to provide on-the-ground support.Your Growth OpportunitiesThree pathways for growth are available...

About the Role Meritis is hiring a C# Developer (H/F) in Paris. This position focuses on building, maintaining, and improving software applications using C#. The work supports ongoing projects and helps deliver solutions that meet client needs. What You'll Do Develop new features and applications with C# Maintain and update existing software Work with the team to solve technical challenges Contribute to the quality and reliability of project deliverables Location This role is based in Paris.

About the Role Meritis is hiring a C# Developer for its Paris team. This role involves working on projects that use the latest technologies to deliver practical solutions. Expect to collaborate with colleagues who value dedication and technical skill.

Role Overview Talan is seeking a C# / .NET Developer with experience in market finance to support and improve our financial systems. This role is based in Paris and focuses on building and maintaining solutions that help drive our business forward. What You Will Do Develop and optimize financial applications using C# and .NET technologies Work closely with team members to deliver reliable, high-quality code Contribute ideas to strengthen system performance and stability Help troubleshoot and resolve technical issues within our market finance platforms Who We’re Looking For Solid experience with C# and .NET development Background in market finance or financial systems Attention to detail and a collaborative mindset Based in Paris or able to work on site

Join Sopra Steria, a leading player in digital transformation, as an Expert Developer specializing in Java Fullstack technologies within the Financial Services sector. You will be pivotal in delivering innovative solutions and enhancing our client’s technological capabilities. Your expertise in Java, frontend technologies, and frameworks will contribute to dynamic projects aimed at optimizing financial processes.

Role Overview Sopra Steria is looking for a Fullstack Java React Developer to join the team in Paris. This role focuses on building and maintaining applications for clients in the financial services sector. Projects aim to support digital transformation and improve user experiences. What You Will Do Work with cross-functional teams to design, develop, and maintain applications Use both front-end and back-end technologies to deliver software that meets client requirements Contribute to the development of solutions that support business goals in financial services Location This position is based in Paris, Île-de-France.

Join Dailymotion as a Fullstack Developer specializing in Python and React, contributing to our innovative B2C applications. You will be responsible for developing and maintaining high-quality web applications that enhance user experiences and drive engagement. This role offers the flexibility of working fully remotely from anywhere in France.

About UsAt MARGO, our consultants focus on what truly matters: intricate projects that combine intellectual challenges with real business impact. We partner with leading players in finance, industry, and technology to design and develop 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, our Practice Manager for the past five years. Collaborating with him means benefiting from his in-depth knowledge of the firm, receiving close mentorship for your personal development, and contributing to demanding IT projects that have a significant impact on our clients.Your ResponsibilitiesJoin an international team of electronic trading experts dedicated to developing high-performance market solutions. Your tasks will include:- Designing and enhancing trading bots capable of executing complex real-time strategies.- Optimizing performance (latency, multithreading) and managing high data volumes.- Ensuring robust C# code, adhering to SOLID principles, with testing and code reviews.- Contributing to the management of Cloud infrastructures (Azure) and data security.Candidate ProfileWe are looking for a C# developer passionate about real-time systems and interested in market finance, eager to thrive in complex, high-performance environments.- Educational background: Master’s degree (engineering school or university).- Strong skills in C#, multithreading, performance optimization, and best development practices (SOLID, unit testing).- Experience in developing critical systems, processing real-time data streams; experience in finance is a plus.- Ability to solve complex technical problems and collaborate with multidisciplinary teams.- Enthusiasm for demanding environments.

Join CAPFI Technology - a Hub of IT and Financial ExpertiseCAPFI Technology, located in Paris and London, combines our expertise in IT and market finance. Our consultants collaborate with clients on strategic projects that integrate innovation, technology, and financial challenges. Your Responsibilities :As a .NET Developer / Software Engineer (H/F), you will be part of an agile team working with a financial market client on:Developing containerized full-stack applications and micro-services while adhering to Craftsman practices (TDD, BDD, DDD).Analyzing architecture to identify improvements.Designing and developing .NET applications.Implementing continuous integration via automated tests (Jenkins, GitLab, Bitbucket, etc.) and continuous deployment (Ansible, AWX, Octopus, GitLab, etc.).Managing versions (Git, TFS).Creating test plans and participating in tests not covered by unit tests. Your Strengths :A passion for thriving in a demanding and enriching environment.A desire to challenge yourself in client missions.Curiosity, passion, and a collaborative spirit.A strong interest in management and a willingness to mentor peers.Solid technical or functional skills in market finance.A degree from an engineering school or equivalent, with at least three years of experience in IT. What We Offer You:CAPFI is a vibrant company that places collective spirit and peer sharing at the heart of its culture. We provide a flexible work environment with agile project choices. CAPFI also offers:Freedom to choose your manager.Opportunities for certified training.The chance to join Tribes and foster the collective energy and expertise of CAPFI.

Join Altersolutions as a C++ Tech Lead in the vibrant city of Paris. In this pivotal role, you will spearhead projects, mentor junior developers, and drive the evolution of our C++ applications. Your expertise will be crucial in ensuring that our software solutions are not only robust but also cutting-edge.As a leader, you'll collaborate closely with cross-functional teams to design, develop, and implement high-performance software solutions that meet our clients' needs. If you are passionate about technology and thrive in a dynamic environment, we want to hear from you!

About UsAt MARGO, our consultants focus on what truly matters: complex projects that combine intellectual challenge with real business impact. We support leading players in finance, industry, and technology in 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, Practice Manager at MARGO for 5 years, and Prosper Gratian, Practice Lead and C++ Developer. Working alongside them provides unparalleled insight into the company, close mentorship for your development, and the opportunity to contribute to demanding IT projects with significant impact for our clients.Your ResponsibilitiesYou will engage in the development of a core application for the front office of an investment bank, a booking tool that provides positioning and performs real-time risk calculations. This tool is essential for the trading floor and other data consumers such as risk management, accounting, and back office. You will be involved in:- Developing new features to enhance performance and reduce latency.- Optimizing code to ensure peak performance, particularly in multithreading and latency management.- Collaborating with front office teams and other client departments.Technical Challenges: Performance, multithreading, and latency management.Rich Functional Environment: You will work in a rich functional environment, interacting with several key departments.Tech Stack: C++ 17