C++ Developer - Front Office | Software Engineering Practice

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…

Who are we?At MARGO, our consultants engage in what truly matters: complex projects that blend intellectual challenges with real business impact. We collaborate 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 newly established team led by Paul Blois, Practice Manager at MARGO for the past 5 years. Working alongside him means gaining in-depth knowledge of the company, receiving close guidance in your professional development, and contributing to demanding IT projects with significant impacts for our clients.Your missionsYou will join a newly formed team at a leader in the energy sector, tasked with designing an algorithmic trading platform dedicated to battery energy storage. This strategic project aims to stabilize the electrical grid by injecting energy during peak consumption.As a C# Developer, you will contribute to building a robust, scalable, and high-performance solution capable of managing assets across Europe and the United States.Your responsibilities include:- Trading Engine Development: Design the software components enabling algorithmic trading in Intraday markets.- Asset Optimization: Implement and run complex optimization models (considering weather, market prices, and consumption profiles).- Backtesting Platform: Develop a secure and efficient environment for traders to test and validate their algorithmic strategies.- Scalability & Evolvability: Participate in the architecture of a solution initially focused on batteries but eventually designed to integrate the entire renewable energy portfolio (wind, hydro, thermal).

About Meritis Meritis is a consulting firm focused on IT and digital transformation projects. Based in Paris, the team supports clients across various industries with technology-driven solutions. Role Overview: C# Developer (H/F) The C# Developer will contribute to software development projects, building and improving applications in collaboration with colleagues from different disciplines. This role involves hands-on coding, problem-solving, and regular interaction with project teams to meet client needs.

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.

Join Meritis as a C# Developer and be part of an innovative team that shapes the future of technology. In this role, you will work on exciting projects, utilizing your expertise in C# to develop high-quality software solutions.

Join our dynamic team at Meritis as a C# Developer specializing in Financial Markets. In this role, you will leverage your expertise in C# to develop innovative software solutions tailored to the financial sector. Your contributions will directly impact our clients and help drive our business forward.

About the Role Meritis is hiring a C# Developer (H/F) for its Paris office. This role focuses on building and improving software applications for a range of client projects. The team values technical skill and a collaborative approach to problem-solving. What You Will Do Develop and maintain applications using C# Work closely with colleagues to deliver solutions that align with client requirements Contribute to the design, coding, and testing of new features Location This position is based in central Paris.

Role Overview Meritis is looking for a C# Developer to help design and build software solutions in Paris. This role involves working closely with colleagues from different specialties to improve our applications and support ongoing technical improvements.

Role Overview Meritis is seeking a C# Developer to join the team in Paris. This role involves working closely with colleagues to build and improve software applications that support the company's goals. What You Will Do Develop and enhance applications using C# Collaborate with team members on project delivery Contribute ideas and technical solutions to support business needs Location This position is based in Paris.

Join our innovative team at Meritis as a C# Developer specializing in the finance sector. You will have the opportunity to work on cutting-edge projects that drive financial technology forward. As a key member of our development team, you'll collaborate closely with other developers and stakeholders to create robust, scalable applications that meet the needs of our clients.

We are looking for a passionate and skilled C# Developer specializing in financial markets to join our dynamic team at Meritis. In this role, you will leverage your expertise in C# programming to develop innovative financial solutions, working closely with our clients to meet their evolving needs.Your responsibilities will include the design, implementation, and maintenance of software applications related to trading platforms, risk management systems, and financial analytics tools. You will have the opportunity to work in a fast-paced environment, collaborating with cross-functional teams to deliver high-quality software products.

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.

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.

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 Talan, a leading consulting and technology firm, as a skilled C# Developer specializing in Oracle technologies. We're looking for a passionate individual who thrives in a collaborative environment. You will play a key role in developing innovative software solutions for our clients while enhancing your skills in a dynamic setting.In this role, you will be responsible for designing, developing, and maintaining applications utilizing C# and Oracle. Your contributions will support our engineering and development teams as we strive to deliver high-quality solutions. This is an excellent opportunity to further your career with a company that values growth, innovation, and collaboration.

At Shift Technology, we are at the forefront of the insurance industry's digital transformation through our cutting-edge AI platform. We leverage generative, agentic, and predictive AI to enhance underwriting, streamline claims, and combat fraud and risk, thereby promoting operational efficiency and delivering outstanding customer experiences with tangible business outcomes.Our diverse team, representing over 50 nationalities, thrives in a culture grounded in innovation, trust, and a shared mission to revolutionize insurance through our SaaS solutions.Our dynamic Engineering Team is pivotal to our value proposition. We tackle intricate challenges not just within our squads but also in collaboration with other teams across the organization. If you're passionate about addressing complex technical problems, this is the ideal environment for you! KEY RESPONSIBILITIES As a Fullstack Developer, your technical expertise and independence will empower you to design and implement comprehensive solutions for our applications and features.Craft intuitive user interfaces for data collection and review.Develop and maintain resilient APIs that facilitate automated decision-making.Write, test (from unit tests to end-to-end), and deliver clean, maintainable code.Engage in releases, deployments, and the monitoring of live solutions.Contribute to technical migrations, modernization initiatives, and architectural enhancements as our platforms evolve.Performance, scalability, and quality are crucial challenges to overcome in delivering and reviewing code. You will collaborate with teammates, including software engineers, data scientists, QA specialists, UX designers, and product managers, to provide and receive feedback and continuously enhance the agile development process.

Join our dynamic team at DV Live, where we design and operate interactive platforms for media, including TV and radio. Our platforms are essential for engaging audiences through games, quizzes, voting, dedications, and SMS/voice engagement, especially during peak events.As we embark on a busy roadmap featuring significant refactoring and restructuring projects, we are looking for a dedicated Senior Lead Developer to bolster our DV Live team.This role is primarily hands-on; you will be involved in daily development tasks such as feature delivery, refactoring, and addressing complex issues while serving as a technical reference point for quality assurance, decision-making, and mentoring others. You will collaborate in a multi-team, multi-site environment with strong dependencies involving SMS platforms, telecom operators, and cross-functional teams.We are increasingly incorporating AI into our development workflow (e.g., Cursor, Bolt, vibe coding, and various models). We seek someone who can pragmatically leverage these tools to enhance delivery speed while maintaining high-quality standards.Key Responsibilities:   •    Hands-on development and delivery   •    Implement end-to-end features and actively participate in release cycles.   •    Tackle complex topics: refactoring, performance issues, critical fixes, and tooling.   •    Provide technical leadership   •    Define technical parameters for features (solution design, breakdown, estimates, acceptance criteria).   •    Ensure adherence to standards: code reviews, quality checks, security protocols, and documentation.   •    Mentor developers through best practice sharing.   •    Focus on scalability, reliability, and refactoring   •    Lead and contribute to major refactoring projects (critical flows, SMS engines, performance).   •    Optimize performance and resilience (load spikes, MySQL tuning, application optimization).   •    Coordinate cross-team initiatives (Product, Infrastructure, other DV teams).   •    Overcome dependency-related obstacles and facilitate technical decision-making.   •    AI-assisted development   •    Utilize AI tools for acceleration: assisted generation, refactoring, testing, and documentation.   •    Help structure team practices (guidelines, quality/security safeguards, best practice sharing).Tech Stack / Environment:   •    Backend: PHP - services/APIs (Symfony framework)

Join our innovative team at Meritis as a C++ Developer specializing in Financial Markets. In this role, you will contribute to the development of cutting-edge financial applications and systems that drive efficiency and performance across various trading platforms. We are looking for individuals who are passionate about technology and finance, with a strong commitment to delivering high-quality solutions.

Role Overview Theodo is hiring a Lead Software Engineer to join its Paris office. This role involves leading a team of developers on impactful projects, shaping software solutions with modern technologies, and setting a high standard for quality. What You Will Do Guide a team of engineers through all stages of software development Work closely with team members to deliver reliable, well-crafted solutions Apply current technologies and development practices to real-world challenges Mentor and support developers in their growth Encourage open communication and foster a collaborative team spirit Who We’re Looking For Strong technical background in software engineering Experience leading or mentoring development teams Clear communicator who can motivate and inspire others Comfort working in Paris or relocating to the city