Backend Developer (.Net Core) - Post Sales

About the Role veepee is looking for a Backend Developer with experience in .Net Core to join the Post Sales team in Paris. This position focuses on building and maintaining backend systems that support customer experience and streamline operations. What You Will Do Design, develop, and maintain backend solutions using .Net Core Work closely with teams across the company to gather requirements and deliver solutions Troubleshoot technical issues and resolve them efficiently Apply software development best practices throughout the project lifecycle Who We’re Looking For Experience with .Net Core in a backend development role Comfortable collaborating with cross-functional teams Strong problem-solving skills and attention to detail Ready to share ideas and contribute to continuous improvement This role is based in Paris and sits within the Post Sales department at veepee.

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 Dust as a Post-Sales Solutions EngineerAt Dust, we're pioneering a revolutionary AI operating system designed to transform business operations. Our mission is to empower teams and individual employees to customize the precise agents they need to enhance productivity.With over 70% of our users actively engaging each week, Dust has become as integral to their workflows as tools like Slack and Notion.Currently, we are on a thrilling growth trajectory. We proudly serve esteemed clients such as Cursor, Clay, Whatnot, and Persona, and we are committed to achieving a fivefold increase in our growth by the end of 2026.Dust is a Sequoia-backed company with a passionate team of optimists who hail from industry leaders like Stripe and OpenAI. We prioritize user experience, swift execution, and maintain a fun atmosphere as we innovate.Role OverviewAs a Post-Sales Solutions Engineer at Dust, you will serve as the technical partner for our existing clients, ensuring they derive maximum value from our AI operating system throughout their journey. Your primary focus will be on fostering long-term customer success, unveiling expansion opportunities, and crafting impactful use cases that make Dust indispensable for their operations. Collaborating closely with our Customer Success and Product & Engineering teams, you will strengthen customer relationships and enhance retention.Key ResponsibilitiesCultivate deep expertise in Dust's product offerings, platform capabilities, and prompt engineering best practices, positioning yourself as the go-to expert for customer scenarios.Act as a trusted technical advisor to our Enterprise clients, establishing strong relationships with both technical and business stakeholders.Lead advanced implementation initiatives, focusing on high-impact use cases, technical integrations, and custom workflows.Conduct training sessions and workshops, effectively conveying Dust's value proposition to prospective buyers and evaluators, including security and compliance teams.

About UsAt Trainline, we are passionate advocates for sustainable travel, dedicated to shaping a greener future. Our platform empowers millions of travelers to easily discover and book the most cost-effective tickets across various carriers, fares, and travel options via our highly-rated mobile app, website, and B2B partner channels.Embark on Great Journeys with Trainline As Europe's leading rail app, boasting over 125 million monthly visits and £5.9 billion in annual ticket sales, we partner with over 270 rail and coach companies across more than 40 countries. Our aim is to make travel simple, seamless, eco-friendly, and affordable for everyone.Currently a FTSE 250 company, we are fueled by a diverse team of over 1,000 individuals from 50+ nationalities, operating in cities like London, Paris, Barcelona, Milan, Edinburgh, and Madrid. With a strong focus on growth within the UK and Europe, now is the ideal time to join us on this high-speed journey.Meet the Backend Teams at Trainline Our Backend teams are the backbone of Trainline's exceptional product offering. We develop the journey search capabilities that millions of customers rely on daily, create an eCommerce platform for a secure and smooth experience, and connect with over 270 transportation operators across 45 countries worldwide. Each team specializes in various domains, including journey search, fare calculations, bookings, fulfillment, payments, refunds, carrier integrations, real-time timetable data, journey disruptions, and more.Your Role as a Mid-Level .NET Engineer at Trainline Implement new functionalities or features utilizing the most suitable tools and techniques.Prioritize quality in every aspect of your work and that of your team.Continuously enhance the codebase.Keep the customer as the top priority.Proactively identify and eliminate blockers, inefficiencies, and waste.Contribute significantly to technical decision-making.Serve as a coach and mentor for your team members.Take full ownership of the development lifecycle from coding to production, including deployment and monitoring.

Note: This position requires relocation to our Milan office.About SatispaySatispay aims to transform everyday payments by making them straightforward, equitable, and accessible to all. Our vision has expanded to redefine the future of financial transactions.We are a community empowering millions, united by a common mission to tackle significant challenges. Our approach is swift, bold, and collaborative, fostering an environment where innovation thrives and growth is continuous.As part of the Core Team, you'll engage with vital systems, overseeing interactions with banks, orchestrating payments, and offering the essential infrastructure for Identity and Access Management (IAM). The team also manages risk-related services, focusing on credit risk management and fraud detection.If you are eager to create something impactful that underpins all our product teams, you belong here.Your ResponsibilitiesIn your role as a Senior Backend Software Engineer within the Core Team, you will be pivotal in shaping the backbone of our payment platform. You will ensure the technical excellence and timely delivery of complex systems that influence various services and product teams across the organization.Your daily tasks will include:Core Platform Development: Contributing to the design and enhancement of critical systems like the Transaction Ledger, IAM, and Payment Orchestration, ensuring high performance, scalability, and functionality for seamless integration by product teams.Risk & Financial Services Optimization: Implementing and refining services for bank integrations, credit risk assessment, and real-time fraud detection, developing robust logic that safeguards our financial ecosystem.Technical Leadership: Leading technical analyses for cross-service projects, facilitating discussions, and producing comprehensive documentation (Smart Papers) to ensure clarity and robustness in your designs for stakeholders and engineering teams.

Join a leading fintech in credit and insurance, known for its rapid growth and innovative projects! This opportunity is perfect for you!As a Tech Lead / Architect, you will be an integral part of the product team responsible for developing credit products.Within an agile framework, you will collaborate with a team of four developers and a Product Manager.This team is at a pivotal point in its journey, transitioning from a Java/GCP stack to Azure/.NET to streamline the diverse technical stacks within the group.The future Tech Lead will commit to the .NET ecosystem and will primarily focus on structuring, leading this transition, and overseeing technical migrations.A strong affinity and skills in application architecture are essential for success in this role.Your responsibilities will include:Designing, developing, and maintaining the backend and orchestration layers of Meilleurtaux's credit information system.Serving as a Technical Leader for your team (architecture, design, development practices, etc.).Your Mission Exemplify Technical Leadership:Analyze business needs and propose suitable technical solutions.Recommend and validate technical choices for the solution.Design and oversee the development of new functionalities.Ensure the evolutionary maintenance of the information system.Guarantee optimal code maintainability using AI tools like SonarCloud and Dependabot.Implement best development practices: adherence to engineering guidelines and proactively contribute to improvements.Contribute to defining and establishing scalable and effective backend architectures.Design new cloud technical architectures and lead the creation of Technical Architecture Documents (DAT).Document technical solutions and architectures.Foster innovation and propose new technologies, features, and tools tailored to the context.Actively participate in the Backend Chapter.Organize Framework and Processes:Establish and/or optimize work frameworks and methodologies to enhance team efficiency and productivity (agility, communication, documentation, etc.)Ensure a balanced velocity/quality ratio through effective QA and CI/CD processes (code reviews, testing, etc.).Be responsible for the quality and completeness of the DATs produced by your team.Create systems and processes that utilize AI for development to optimize team velocity.... (and more responsibilities)

Join our dynamic team as a Senior .NET Developer (H/F) where you will play a pivotal role in crafting high-quality software solutions. You will collaborate with cross-functional teams to design, develop, and maintain applications that meet our clients' needs. If you have a passion for technology and a knack for problem-solving, we want to hear from you!

Join Altersolutions as a Fullstack Developer specializing in .Net and Angular. We are seeking a dynamic individual who is passionate about building innovative web applications and enhancing user experiences.Your role will involve collaborating with cross-functional teams to develop and maintain scalable applications. You will have the opportunity to work with the latest technologies and contribute to exciting projects that make a real impact.

We are seeking a passionate and motivated Junior .NET Developer to join our dynamic team at myjobcompany1 in Paris. This is an excellent opportunity for those who are eager to grow their skills in software development within a collaborative environment. You will work on exciting projects, contribute to the development of innovative solutions, and gain invaluable experience in the tech industry.

Join Dailymotion as a Senior Backend Engineer and play a pivotal role in developing our core components. In this fully remote position, you will work collaboratively with cross-functional teams to design, build, and maintain scalable backend systems that power our video platform.

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 Altersolutions as a talented .Net / React JS Developer and take your career to the next level! We are seeking an individual with a strong background in .Net and React JS to contribute to exciting projects in a dynamic environment. You will collaborate with a team of professionals dedicated to delivering high-quality software solutions.

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.

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.

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...

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.

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

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.

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 Veepee as an Android Developer in our Core Team, where you'll work within a dynamic and agile group of 8-10 engineers. Your role will involve enhancing the quality of our Android application, developing tools for fellow developers, and focusing on security, performance, and stability. You'll also have the opportunity to engage with the Android community and contribute to innovative solutions that elevate our platform.