Backend Software Engineer (.NET) - Hybrid

Join our dynamic global team as a Software Engineer, where you will play a crucial role in ensuring the quality, development, and implementation of our innovative software products. As part of a diverse technology department, you will collaborate with talented professionals from cities like Barcelona, New York, London, Manchester, Bucharest, and India. If you're eager to contribute to a growing company and make a significant impact, we would love to hear from you!About TransPerfect – TechOps:The TransPerfect TechOps team has been instrumental in our company's success for over a decade, delivering technology and services that have greatly enhanced the experiences of our clients and colleagues. From improving workflows for team members to developing core services that underpin our GlobalLink platform, we strive to create scalable client interfaces that make complex ecosystems accessible to everyone.

Join our innovative team as a Junior Software Engineer focused on backend development in .NET. You will play a crucial role in ensuring the quality, development, and execution of our software products.As part of our dynamic technology department, you'll collaborate with a diverse group of professionals from cities like Barcelona, New York, London, Manchester, Bucharest, and India. If you're eager to make an immediate impact in a growing company, we are excited to hear from you!About TransPerfect – TechOps:The TransPerfect TechOps team has been instrumental in our success for over a decade, delivering cutting-edge technology and services that enhance the workflow for our clients and colleagues. From optimizing our GlobalLink platform to creating user-friendly client interfaces, your contributions will help simplify complex systems for novice users.

Join the Nexthink Engineering department as a Senior Software Engineer, where you will play a pivotal role in developing our innovative Collectors—endpoint agents that gather and analyze crucial OS information from millions of users.These Collectors not only extract valuable insights about operating systems but also facilitate issue remediation, enhancing the overall user device experience. They are a fundamental and intricate component of our product suite, demanding the utmost reliability and performance across platforms such as Windows, macOS, and Linux.• Challenge #1: Develop robust and dependable solutions.• Challenge #2: Implement solutions tailored for multiple platforms, leveraging the unique advantages of each.• Challenge #3: Strive for cross-platform compatibility whenever feasible.Our engineering team thrives on tackling unconventional challenges, distilling them into actionable solutions. They continuously innovate to enhance our products, prototype their ideas, and see them through to production, all while adhering to our stringent standards of quality, performance, and security.

Join inetum2 as a Software Developer specializing in .NET technologies. This is an exciting opportunity for individuals looking to kickstart their careers in software development. You will work in a dynamic environment, collaborating with experienced professionals to build innovative software solutions.

Join aircall, a leading unicorn in the customer communications space, revolutionizing how businesses engage with their customers through an AI-powered platform. With over 22,000 global clients, we merge voice, SMS, WhatsApp, and AI into a unified workspace that enhances team efficiency and customer satisfaction.Our mission is simple: empower teams to achieve more by working smarter. Our innovative AI Voice Agent automates routine calls, while AI Assist streamlines post-call tasks, and AI Assist Pro provides real-time insights to optimize performance. This results in increased revenue, quicker issue resolution, and scalable teams.Headquartered in Paris, with a robust presence in North America through our Seattle office, we also have teams in Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product is beloved by customers, and our rapid growth is supported by top-tier investors and cutting-edge AI advancements across our offerings.Our Work Culture: At aircall, we prioritize customer focus, data-driven decision-making, and significant outcomes. We cherish ownership, continuous learning, and a sense of urgency. If you thrive in a collaborative and fast-paced environment where trust and impact are valued, you will fit right in.As a Software Engineer, you will play a pivotal role in designing, developing, deploying, and maintaining critical business features that enhance customer value. Your day-to-day will involve ensuring operational excellence, utilizing metrics, and adhering to best practices.Driven by quality, excellence, and agility, you will help elevate our delivery processes. Leveraging NodeJS and Typescript within our AWS-hosted environment, you will create resilient services that seamlessly integrate with essential customer tools such as CRM, Helpdesk, and E-Commerce platforms.

Join aircall, a leading AI-driven customer communication platform, as we innovate the way businesses interact with their customers. With over 22,000 companies relying on our services, we integrate voice, SMS, WhatsApp, and AI into a unified workspace designed to enhance efficiency and drive revenue.Our vision is simple yet powerful: empower teams to work smarter, not harder. With tools like our AI Voice Agent for automating routine calls and AI Assist Pro for real-time guidance, we ensure that our teams can achieve peak performance and fast resolutions.Headquartered in Paris, with a strong presence in North America and multiple offices including Madrid, London, and New York City, aircall is backed by top-tier investors and is rapidly evolving through AI innovation across various product lines.At aircall, you will be part of a dynamic and ambitious team focused on impactful results. We prioritize ownership, continuous learning, and agile practices. If you thrive in a collaborative and fast-paced environment, you will flourish here.We are seeking a dedicated and enthusiastic Senior Software Engineer to enhance our engineering department and contribute to our innovative projects.In this role, you will oversee the design, development, deployment, and maintenance of essential features that deliver significant value to our customers. You will champion operational excellence and best practices while mentoring your team and the wider engineering community.Your work will focus on elevating quality, excellence, and agility within our delivery processes. You will work primarily with NodeJS and Typescript, ensuring our solutions are effectively hosted on AWS.

Estamos buscando un talentoso Desarrollador .NET Core 8 para unirse a nuestro equipo de desarrollo en Devoteam. En este rol, serás responsable de diseñar, desarrollar y mantener aplicaciones innovadoras utilizando la plataforma .NET Core 8. Si tienes pasión por la tecnología y un deseo de trabajar en un entorno dinámico y colaborativo, ¡queremos conocerte!

Welcome to Adyen! At Adyen, we revolutionize the financial technology landscape by providing a comprehensive suite of payment, data, and financial solutions. Our esteemed clients include industry giants like Meta, Uber, H&M, and Microsoft, solidifying our position as the go-to financial technology platform. We are driven by ambition and innovation in every aspect of our work. We believe in fostering a dynamic environment where talented individuals can thrive. Our culture encourages ownership, collaboration, and problem-solving amongst diverse teams facing unique technical challenges. Together, we develop ethical and innovative solutions that empower businesses to achieve their goals efficiently. About Our Financial Products: Adyen is expanding its horizons beyond payments, creating a comprehensive range of embedded financial services tailored for platforms, marketplaces, SaaS businesses, on-demand services, and crowdfunding initiatives. Our mission is to facilitate seamless global management of payments and financial services through cutting-edge API integrations and hosted solutions. Our innovative platform enables businesses to: Execute onboarding, verification, and compliance processes across diverse markets. Manage transactions and expedite payouts and bank transfers in preferred currencies. Provide value-added services such as capital lending and the issuance of payment cards and bank accounts. Our team is dedicated to developing the technology that underpins this unified platform, focusing on various critical areas. Your Role: Develop and maintain our high-performance distributed platform. Contribute to architectural design decisions ensuring our platform's scalability. Mentor and coach junior engineers, fostering a culture of feedback and continuous improvement. Collaborate with a diverse and inclusive team. Launch quickly and iterate frequently, impacting businesses and customers from day one. Identify and enhance platform components for greater robustness and scalability. Work across teams and time zones to drive initiatives, review code, and embrace constructive feedback.

Note: Only candidates located in Spain will be considered. Visa sponsorship is not available. Lynx Financial Crime Tech S.A develops AI-driven systems to detect and predict behavioral patterns in financial transactions. The team draws on backgrounds in both finance and academia, focusing on self-learning tools that support low-latency processing for clients in banking, fintech, and commercial sectors. Their solutions work across on-premises and cloud environments. The company values vision, agility, and speed, aiming to build trust with customers and encourage proactive risk management. Lynx supports diversity and equal opportunity, welcoming people from all backgrounds. Role overview This Madrid-based Software Engineer (Python) position centers on building and maintaining an AI-powered anti-money laundering (AML) tool. The platform relies on Big Data and real-time processing to deliver self-learning solutions for the financial sector. Main responsibilities Analyze requirements and contribute to solution design. Develop and maintain a cloud application for AML detection in financial environments. Assess system performance and identify areas for speed improvements. Conduct quality assurance testing to validate new features and changes. Create and manage test cases. Diagnose and resolve software issues. Promote best practices in the use of development repositories and tools.

At KingMakers, we are proud to be the leading platform for sports and iGaming entertainment in Africa, where millions of players engage daily across various markets. Since our inception with BetKing in Nigeria in 2018, we have rapidly expanded our footprint, most recently with the acquisition of SuperSportBet in South Africa. Our dynamic Product & Engineering organization boasts hubs across Europe and Africa, and we are committed to scaling our innovative technology platform in real-time.In this pivotal role, you will be at the forefront of our growth trajectory by driving our payments infrastructure. Every market expansion hinges on our payment systems, which handle every deposit, withdrawal, and transaction across all regions we serve. As we grow, you will face increasing complexities involving more markets, payment providers, and regulatory environments, alongside higher transaction volumes.This role is high-impact; your work will directly influence the financial infrastructure that supports our operations across multiple markets. Reliability, accuracy, and performance are paramount, and your engineering contributions will have immediate implications for both our players and the business. You will be an integral part of a collaborative squad, involved in the entire software development lifecycle, from design to production ownership.Key Responsibilities:Design, develop, and maintain payment processing services, integrating with third-party payment providers, PSPs, and financial networks.Manage features from inception to delivery, including technical design, testing, monitoring, and production support.Utilize event-driven architectures (Kafka, Service Bus) to facilitate reliable, asynchronous processing of high-volume financial transactions.Contribute to a microservices architecture built on .NET/C#, with REST APIs, gRPC, and Azure cloud infrastructure.Work closely with product managers, QA engineers, and other teams (Risk, Platform, Player Account) to create seamless user experiences.Participate in code reviews and contribute to the overall quality of engineering within the squad.Assist in diagnosing and resolving production incidents by identifying root causes.Engage in technical discussions to advocate for optimal solutions.

Join Aircall, a leading unicorn in the customer communications sector, revolutionizing how over 22,000 companies engage with their customers globally. Our innovative AI-powered platform integrates voice, SMS, WhatsApp, and AI into a single, compelling workspace, designed to drive revenue, enhance issue resolution, and empower customer-facing teams.Our success is rooted in a clear vision: enable teams to work smarter, not harder. Our AI Voice Agent automates routine calls, AI Assist simplifies post-call tasks, and AI Assist Pro provides real-time insights, allowing individuals to perform at their peak. This leads to increased revenue, quicker resolutions, and scalable teams that operate with confidence.Headquartered in Paris, with a robust North American base in Seattle, Aircall operates across dynamic cities including Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product is beloved by customers, and we are rapidly scaling, supported by top-tier investors and continuous AI enhancements across diverse product lines.At Aircall, you will be part of an evolving company that is ambitious, product-oriented, and execution-driven, where your efforts yield visible impact, swift decision-making, and genuine growth.Our Work Culture: We are deeply customer-focused, data-centric, and committed to achieving significant results. We encourage ownership, ongoing learning, and thoughtful pace. If you excel in a cooperative, fast-paced environment where trust and influence are paramount, you will thrive with us.We are seeking a motivated and passionate Senior AI Software Engineer to enhance our expanding engineering division and contribute to our engineering teams.As a Senior AI Software Engineer, your role will involve the design, development, deployment, and management of AI-driven features that provide substantial value to our customers. Your daily responsibilities will encompass maintaining operational excellence, leveraging metrics and observability, sharing best practices, and mentoring team members across the Engineering department.Quality, excellence, and agility are the bedrock of our delivery processes, and you will be a key player in enhancing these standards. Our development is based on NodeJS and Typescript back-end stacks, tailored to meet specific requirements and always hosted on AWS, creating resilient services that integrate seamlessly with our customers' critical business tools (CRM, Helpdesk, E-Commerce, etc.).

About Speechify Speechify helps people access information by listening instead of reading. Users can listen to articles, cloud documents, and books on their phones, making learning more flexible and accessible. As the top-ranked app in its category, Speechify continues to grow quickly and reshape how people consume audio information. Role Overview The Core Experiences Team builds and maintains the services and SDKs that support Speechify’s product across many platforms. As a Senior Software Engineer in Madrid, this role combines product development with infrastructure work. The position suits someone who enjoys designing reliable APIs, creating straightforward systems, and improving user experience through thoughtful engineering decisions. What You Will Do Collaborate with Product Teams to define project scopes, improve processes for faster customer feedback, and balance integration and user experience needs across teams. Deliver solutions through Speechify’s cross-platform SDK. Improve existing features for better performance, including faster load times and smarter parsing, by refining abstractions and algorithms. Build cloud functions, lightweight backend services, and jobs using Kotlin. What We Look For Strong systems thinking and a preference for simple, effective design. Ability to move quickly, generate ideas, and distinguish between immediate deliverables and projects that need more time. Focus and adaptability within a startup setting, knowing when to collaborate and when to work independently. Experience working with designers, marketers, and product managers; able to inspire and negotiate across disciplines. Location: Madrid, Spain

Role overview SGS seeks a Senior .NET Full Stack Developer based in Madrid. This role centers on building and enhancing web applications that drive business objectives. The position requires hands-on work across both front-end and back-end, with a focus on delivering reliable, high-performance solutions throughout the software development lifecycle. What you will do Develop and maintain web applications using .NET and related frameworks Collaborate with cross-functional teams to design and implement solutions that meet business needs Improve application performance and uphold code quality standards Participate in all stages of the software development process, from initial planning through deployment Requirements Extensive experience in both front-end and back-end development Strong collaboration skills with both technical and non-technical colleagues Dedication to maintaining high standards in code quality and application performance

Join us as an intern in the Software Systems Engineering department at Bosch Group in Madrid! This is an exciting opportunity for students to gain hands-on experience in software engineering, working alongside industry professionals to develop innovative solutions.

Role Overview Speechify is looking for a Software Engineer focused on iOS Core Product to join the team in Madrid, Spain. This position centers on building and improving iOS applications that reach a broad audience. The work involves shaping the user experience and making sure each release meets a high standard of quality. What You Will Do Develop and refine features for Speechify’s iOS apps Work closely with colleagues from different disciplines to deliver new functionality Contribute to the design and implementation of updates that improve the user experience

Join Aircall, an innovative unicorn transforming customer communications through AI-powered solutions utilized by over 22,000 businesses globally. Our platform unifies voice, SMS, WhatsApp, and AI into a cohesive workspace that enhances efficiency and revenue.With a mission to empower teams to operate smarter, Aircall’s AI Voice Agent automates routine calls while AI Assist and AI Assist Pro provide streamlined processes and real-time assistance, enabling teams to achieve remarkable results.Headquartered in Paris, Aircall has a robust presence in North America with a headquarters in Seattle and teams across cities including Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our rapidly growing business is supported by leading investors and driven by continuous AI innovation across our diverse product lines.Culture at Aircall: We prioritize customer focus, data-driven decision-making, and the delivery of impactful outcomes. Our values include ownership, continuous learning, and a commitment to thoughtful execution. If you thrive in a collaborative and fast-paced environment where trust and impact are prioritized, you will find your place here.We are seeking an enthusiastic and dedicated Senior Software Engineer to contribute to our expanding Communication Platform department as part of the Number Management team. In this role, you will spearhead the design, development, deployment, and maintenance of essential features that significantly enhance customer value.You will actively promote best practices and mentor colleagues within your team and across the engineering department.Our commitment to quality, excellence, and agility is central to our delivery processes, and you will play a vital role in elevating these standards.

About Air Apps Air Apps began as a family-founded company in Lisbon in 2018 and has grown to operate in both Lisbon and San Francisco. The team builds the AI-powered Personal & Entrepreneurial Resource Planner (PRP), aiming to change how people manage resources. Air Apps remains self-funded and has reached over 100 million downloads worldwide. Role Overview: Lead Software Architect The Lead Software Architect will define and oversee the system architecture for Air Apps’ AI-driven platform. This role involves collaborating with engineers, product managers, and stakeholders to design solutions that are scalable, secure, and high-performing. The architect will help guide technology choices, evaluate new tools and frameworks, and set standards for software design, cloud infrastructure, and system integration. Key Responsibilities Shape and manage the overall architecture for Air Apps’ platform Work closely with cross-functional teams to deliver solutions aligned with business goals Assess and recommend new technologies, frameworks, and best practices Ensure security, scalability, and performance across systems Contribute to technology strategy and decision-making Work Location and Relocation This is a fully onsite role based in Madrid Relocation support is available for candidates moving to Madrid Join Air Apps to help shape products that empower people worldwide and contribute to a collaborative, creative culture focused on innovation.

Join our dynamic team at Sigma Software Group as a Senior TypeScript/Node.js Developer. We are seeking an innovative and experienced developer to contribute to our cutting-edge Swedish ad platform. You will work collaboratively with a talented group of professionals, enhancing our technology stack and delivering high-quality software solutions.

Join our innovative team at Inetum as a Revit API .NET Developer (Dynamo). We are seeking a passionate developer who is proficient in .NET programming and has experience with the Revit API, specifically utilizing Dynamo for automating workflows and enhancing design processes. This is an exciting opportunity to work on cutting-edge projects in the architectural and engineering sectors.