Python Developer - Financial Markets (H/F)

Join Octopus Energy, where we challenge the status quo in the energy sector by making it greener, more affordable, and accessible to everyone. Originally launched in the UK, our innovative approach has expanded to France since 2022! We combine cutting-edge technology with a team of dedicated professionals who are passionate about our customers and the transition to renewable energy. In just three years, we have grown to become the fifth-largest energy supplier in France! Our mission? To provide all French citizens with cheaper and greener energy, along with practical solutions to accelerate the ecological transition. Currently, we are developing the next generation of products that empower the shift towards sustainable energy. Whether it's facilitating the transition to solar energy and electric vehicles, launching smart pricing, or scaling renewable energy production, we tackle some of the most complex challenges in the energy field! We do this with speed, creativity, and a singular focus on customer satisfaction. As a member of the Octopus Tech team, you will have genuine autonomy, a diverse range of projects to work on, and the opportunity to create products that make a significant impact on people's lives, helping them reduce their bills, live more sustainably, and enjoy truly engaging experiences. You will collaborate closely with our French teams in marketing, operations, and data, as well as with technical teams from other countries in the group . Above all, you will see the real-world impact of your work on our customers quickly. Within the OE Tech France team, you're not just coding; you're building the technological engine that makes green energy simple and intuitive for everyone in France. You will join a small, agile, and innovative team where seniority and collaboration are paramount:- A strong core: You will work daily with 1 Product Manager, 4 Frontend Developers, and 3 Backend Developers. The Backend team is currently composed mainly of senior profiles, allowing you to thrive in a demanding and stimulating technical environment.- Synergy with Data : You will work closely with data experts to leverage insights that drive our innovations.

Join us at iliad-free in Paris as a Staff Engineer specializing in Python. You will take on a pivotal role in our ambitious program aimed at modernizing and evolving our backend systems.Your primary responsibility will be to lead the technical direction of our information system backend, which manages all Free subscribers, including subscription processes, subscriber spaces, and additional services such as video streaming and mobile phone sales.In this role, you will develop a deep understanding of complex business processes executed by our system, such as billing for third-party services, subscription management, and fiber optic connections.You will guide the team in defining the architecture of this distributed system while actively contributing to development using Python, ensuring hands-on involvement.Your expertise will drive development practices that prioritize resilience, quality, testability, and speed of delivery. Additionally, you will be instrumental in establishing robust operational methods in a model where development teams manage their solutions in production, with a constant focus on performance and scalability.

Join our dynamic team at Iliad as a Backend Python Developer in Paris! We are looking for passionate and skilled individuals to contribute to our innovative tech projects. You will work closely with cross-functional teams to design and implement robust backend systems, ensuring high performance and responsiveness to requests from the front-end.Key Responsibilities:Develop and maintain server-side applications using Python.Collaborate with front-end developers to integrate user-facing elements.Optimize applications for maximum speed and scalability.Participate in code reviews and contribute to team knowledge sharing.Stay updated with emerging technologies and best practices.

At Outsight, we specialize in innovative software solutions that leverage 3D LiDAR data to monitor the movements of people and vehicles.Our advanced Spatial Intelligence data is invaluable for operators of transportation hubs, including airports and railway stations, as well as sports venues, road infrastructure, and industrial sites. This data helps enhance operations while ensuring user safety and satisfaction.Our diverse team of scientists and engineers is dedicated to developing cutting-edge solutions from our offices in Paris, San Francisco, Sophia-Antipolis (Nice), and Hong Kong, with a commercial presence in Spain to support our global outreach.Learn more about us here: Insights about OutsightExplore insightful articles that illustrate our work: How LiDAR helps Airports manage increased traffic and People Monitoring using LiDAR.

Join our dynamic team at Sunrise United States Inc. as a Python Back-End Developer. We are seeking a talented developer who is passionate about crafting efficient, scalable code and creating innovative back-end solutions. If you thrive in a collaborative environment and have a strong understanding of Python and back-end technologies, this is the perfect opportunity for you!

Join our dynamic team at myjobcompany1 as a Backend PHP Developer! We are on the lookout for a talented individual who is passionate about coding and eager to work on innovative projects. In this role, you will be responsible for developing and maintaining backend services, ensuring high performance and responsiveness to requests from the front-end.As part of our team, you will collaborate with front-end developers to integrate user-facing elements using server-side logic, and you will contribute to all phases of the software development lifecycle. We value creativity and technical expertise, and we encourage our team members to suggest improvements and new technologies.

Join Meritis, a leading consultancy in the tech space, as a Python Developer (H/F). In this role, you will leverage your programming skills to contribute to diverse projects, developing innovative solutions and enhancing existing systems.We are looking for passionate individuals who are eager to learn and grow in a dynamic environment. This position offers the opportunity to work with cutting-edge technologies and collaborate with talented professionals.

Centreon’s Research and Development team in Paris is hiring a Backend Developer with a strong background in Perl. This position centers on designing, improving, and maintaining the software behind Centreon Infra Monitoring. The primary focus is developing and updating connectors, programs that allow monitoring across a wide range of systems. Each connector includes configuration templates to help users supervise their infrastructure more effectively. What you will do Develop and maintain Perl-based connectors for Centreon Infra Monitoring Adapt to various technologies, working with both software and hardware systems Build connectors that integrate using REST APIs, non-REST APIs, SDKs, SNMP, and other protocols Address user-reported issues and deliver timely fixes Support the transition to new connectors developed in Rust Requirements Strong experience with Perl, essential for current connector development Comfort working with APIs (REST and non-REST), SDKs, SNMP, and varied system integrations Ability to troubleshoot and resolve technical issues efficiently Interest in learning or working with Rust as the connector stack evolves Location This role is based in Paris, Île-de-France, France.

About Us Safran.AI, previously known as Preligens, is a subsidiary of Safran Electronics & Defense, offering cutting-edge artificial intelligence solutions for analyzing high-resolution satellite images, full motion video (FMV) streams, and acoustic signals. Our innovative technologies are employed across aerospace, defense, and government applications. Since our inception in 2016, we have developed complex algorithms and software that automatically analyze, detect, and identify military-relevant objects from commercial and government data. Joining Safran in September 2024, Safran.AI also plays a pivotal role in the group's transformation, applying AI solutions in the realm of Industry 4.0. For instance, our automated image analysis capabilities assist inspectors in identifying potential anomalies in critical components using digital imagery. At Safran.AI, innovation and the pursuit of a safer world are at the heart of our mission. By joining us, you will work alongside passionate, multidisciplinary teams (engineers, researchers, developers) who are among the most talented in the industry, all driven by a shared commitment to technological excellence. We foster a stimulating work environment that encourages creativity and initiative, where every idea is valued.

We are seeking a talented and experienced Senior Python Developer to join our dynamic team at iliad-free in Paris. This role offers an exciting opportunity to work on innovative projects and contribute to the development of cutting-edge technology solutions.The ideal candidate will have a strong background in Python programming, experience with web frameworks, and a passion for delivering high-quality software. You will collaborate with cross-functional teams to design, develop, and maintain software applications that meet the needs of our users.

Join Meritis as a Senior Python Developer / DevOps Engineer and become a key player in our dynamic team. We are looking for an experienced professional who is passionate about software development and cloud technologies. In this role, you will design, develop, and maintain robust Python applications while leveraging DevOps practices to enhance our deployment processes.

Octopus Energy is a bold initiative aimed at making energy greener, more affordable, and accessible to everyone by establishing the first truly digital energy provider. Although the project originated in the United Kingdom, it has expanded to France since 2022! By combining cutting-edge technology with talented individuals committed to our customers and the transition to renewable energy, we continue to bring this vision to life. In just three years, we've become the fifth largest energy supplier in France! Our mission? To provide cheaper and greener energy to all French citizens and offer practical solutions to accelerate the ecological transition. Currently, we are developing the next generation of products to expedite the shift to green energy. Whether it’s facilitating the transition to solar energy, electric vehicles, implementing smart pricing, or enhancing large-scale renewable energy production, we tackle some of the most complex challenges in the energy sector! All while being faster, more creative, and with one obsession in mind: customer satisfaction. As a member of the Octopus Tech team, you will enjoy significant autonomy, a wide variety of projects to work on, and the opportunity to shape products that make a real difference in people's everyday lives—reducing their bills, enabling a more sustainable lifestyle, and providing experiences they will truly appreciate. You will closely collaborate with Octopus teams in France, including marketing, operations, and data, as well as technical teams from other countries in the group . Most importantly, you will quickly see the impact of your work in the real world and with our customers. If this resonates with you, we would love to discuss it further. Within the OE Tech France team, you won’t just be coding: you will build the technological engine that makes green energy simple and intuitive for all French citizens. You will join a small, agile team structured for innovation, where seniority and collaboration are key:- A strong core: You will work daily with 1 Product Manager, 4 Frontend Developers, and 3 Backend Developers. The Backend team is primarily composed of senior profiles, allowing you to thrive in a demanding technical environment.- Synergy with Data : Our data-driven approach ensures that your contributions directly enhance our service quality and customer experience.

Join Meritis as a Commando Python Front-Office Developer (H/F) in the vibrant city of Paris. We are looking for talented individuals to enhance our front-office applications using Python, delivering innovative solutions that meet the needs of our clients.

Join CAPFI, a consulting firm specializing in IT and Financial Markets, where we have a dedicated team focused on this strategic domain.Our consultants combine technical expertise, applied mathematics skills, and a deep understanding of financial challenges to work on high-impact projects, including:Project Management & Business Analysis in Financial MarketsFinancial Engineering (Front Office, Risk Management, R&D)Your Responsibilities As a Python Developer / Software Engineer, you will be integrated into an agile team and will work with our major clients (investment banks, asset managers, fintechs, etc.) on back-end or full-stack projects:Analyze technical architecture and validate proposed changesDevelop tools for data analysis and processingDesign and implement new features on modern infrastructuresAutomate testing (unit, integration, functional)Participate in user demonstrations and acceptance testingContribute to production releases in collaboration with DevOps and security teamsWeb and service development (FastAPI, Flask, Django, NGINX, Apache, etc.)Implement deployment and operational proceduresSet up and manage CI/CD pipelines (GitLab CI, Jenkins, Bitbucket, Ansible, Docker, etc.)Draft test plans and technical documentationYou Are the Right Candidate If:You thrive in a demanding, stimulating, and collaborative environmentYou are passionate about Python development and solving complex problemsYou possess strong technical knowledge (Python, testing, CI/CD, software architecture)You have a natural curiosity for Financial MarketsYou hold a degree from an engineering school or equivalent and have at least 3 years of experience in Python development within a structured contextWhat CAPFI Offers YouAt CAPFI, we place collective knowledge sharing and freedom of growth at the heart of our culture. We offer a flexible work environment, ...

About UsAt Yubo, we are revolutionizing the way individuals connect online through our innovative Social Discovery app. By removing likes and follows, we empower our users to form authentic relationships and express their true selves.We have pioneered a fresh approach for Generation Z to engage socially in the digital realm, currently serving millions of active users. Our mission is to continuously redefine how social connections are formed now and in the future.Our team is diverse, multicultural, and passionately dedicated to our vision. As a leading platform for online socialization, we prioritize creating a safe digital environment for our community. Safety is ingrained in our values, and we proactively work on user protection, support, and education, collaborating with the tech industry and NGOs to establish best-in-class child protection standards.Join us on this exciting journey and play a vital role in shaping the future of social interactions!Role OverviewAs we expand our Tech organization for 2026, Yubo is launching a new Innovate squad dedicated to daring product initiatives and high-stakes projects.This squad aims to take bold risks, experiment with ambitious features, and validate ideas through ongoing testing.We are seeking a Senior Backend Engineer to become a key member of our Backend Experience team, reporting directly to Armand, our Engineering Manager.You will work within a multi-disciplinary squad (including Product, Mobile, Design, and Data) alongside a Senior Backend Engineer who shares leadership responsibilities.Your mission? Design, implement, and manage high-risk backend experiments that test groundbreaking product ideas while ensuring our systems remain resilient, scalable, and cost-effective throughout rapid iteration cycles.This position is not about maintenance; it's focused on building, testing, rolling back, iterating, and learning swiftly.

Join our dynamic team at iliad-free as a Senior Python/Django Developer. In this pivotal role, you will be responsible for designing, developing, and maintaining high-quality web applications that enhance user experience in the Free TV sector. You will collaborate with cross-functional teams to deliver innovative solutions that address real-world challenges.

Join Squarepoint Capital as a Quantitative Developer specializing in High Performance Computing with expertise in Python. In this pivotal role, you will contribute to the development and optimization of advanced quantitative models, leveraging your technical skills to enhance performance in a fast-paced environment. Your work will directly influence trading strategies and investment decisions, making a significant impact on the firm's success.

Role Overview Accor S.A. is hiring a Senior Java Backend Developer for its Paris office. This position focuses on building and maintaining backend systems that support hospitality services worldwide. What You Will Do Design, implement, and maintain backend solutions using Java. Work closely with team members to deliver systems that improve both internal operations and guest experiences. Contribute technical expertise to projects that drive service quality and efficiency. Impact Your work will shape the reliability and performance of core systems at Accor, directly supporting the way guests experience our services.

Role Overview Citech is seeking a Backend Developer with experience in NestJS to support B2B middleware projects in Paris (75012). This position focuses on building and maintaining backend systems that support business operations. What You Will Do Develop and maintain backend services using NestJS Work with cross-functional teams to deliver solutions that improve user experiences Support the performance and reliability of middleware systems for business clients Location This role is based in Paris, 75012.