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Qualifications
Proven experience in backend development, preferably in AI or machine learning environments. Proficiency in programming languages such as Python, Java, or Node.js. Strong understanding of database management systems and API integrations. Ability to work collaboratively in a team and effectively communicate complex technical concepts. Passion for AI and technology, with a desire to learn and grow in a fast-paced environment.
About the job
anyone-ai is looking for a Backend Developer - AI Trainer based in Spain. This role focuses on building and improving backend systems that support AI training projects.
What You Will Do
Develop and refine backend infrastructure to support AI model training and deployment.
Work closely with team members to optimize systems for real-world AI applications.
Contribute technical expertise to help strengthen the performance and reliability of AI models.
Collaboration
Work alongside a group of professionals committed to advancing AI technology. Teamwork and knowledge sharing are central to this position.
About anyone-ai
anyone-ai is a forward-thinking company at the forefront of artificial intelligence innovation. We are committed to developing advanced AI solutions that empower businesses and enhance productivity. Our team thrives on creativity, collaboration, and a passion for technology.
At EPAM NEORIS, we believe that transformation begins with people. Today, as part of EPAM, we are expanding our global reach and capabilities while maintaining what matters most: a culture where every individual can grow, contribute, and lead the way. We are not just filling positions; we are looking for talent eager to excel, continuously learn, and leave a…
Join the leading eCommerce agency and take your career to the next level!Job OverviewInteractiv4 is seeking talented Backend Magento Developers for our offices in Madrid, Barcelona, and Zaragoza.If you have a keen eye for detail, a passion for writing clean code, and a desire to optimize processes, we want you on our team. We value professional development and continuous learning, making us the perfect fit for your career aspirations.RequirementsEducation: Higher Degree or Engineering, preferably in Computer Science, Telecommunications, Mathematics, or related fields.Proven experience in:Magento architecture and configuration.GIT, MVC frameworks, PHP, HTML, JavaScript, CSS, SASS.Mockup integration and third-party system integration, as well as database design and modeling.Preferred QualificationsKnowledge of UX design, SEO, Photoshop, Knockout, React, Redux, and code quality testing tools will be a plus.Advanced English proficiency and certifications in Magento and Akeneo are desirable.What We OfferJob stability with a permanent contract and opportunities for professional growth.Join a highly skilled team in a technologically advanced environment utilizing cutting-edge market solutions.Social benefits including meal vouchers, childcare support, transportation allowances, etc.
Join SQLI as a Drupal Backend Developer and contribute to a strategic digital platform for one of the world’s top three eCommerce platforms in a dynamic, global, and highly scalable environment.As part of our dedicated team, you will help maintain and enhance our client’s corporate headless CMS, delivering content across multiple markets to eCommerce platforms and mobile applications. This role emphasizes backend Drupal development, enterprise-level system integrations, and a commitment to quality and performance.Key Responsibilities:Manage and enhance a headless Drupal CMS (Drupal 10/11) for Nespresso’s eCommerce site and mobile apps.Design, implement, and maintain REST / JSON:API endpoints in Drupal to ensure structured content delivery to frontend applications (React), adhering to established JSON schemas.Develop integrations between Drupal and commercial solutions, including translation services and Digital Asset Management (DAM) platforms.Create and maintain reusable content structures (Paragraphs, entities, taxonomies) that support a multi-market content model while following Drupal best practices.Improve the editorial experience through the development of intuitive user interfaces and efficient editing workflows tailored for non-technical users.Oversee and optimize Drupal hosting on Acquia Cloud, ensuring high performance, security, and scalability standards.Design and implement effective multi-layer caching strategies (Drupal cache, Varnish, CDN) with appropriate cache invalidation for dynamic content.Collaborate closely with UX/UI designers to ensure compliance with accessibility standards (WCAG) and SEO best practices.Analyze and resolve issues related to APIs, integrations, and content delivery.Maintain high standards of code quality through code reviews, unit testing, and integration testing.Participate in technical validation processes, including exercises and architecture reviews in a collaborative engineering environment.
About the Role Septeo is looking for a Senior PHP Backend Developer in Murcia. This position focuses on designing and building backend systems that support and improve our products and services. The work centers on PHP development, with a strong emphasis on performance and scalability. What You Will Do Design and implement backend solutions using PHP Work closely with teams across disciplines to deliver reliable software Contribute to the quality and efficiency of our backend architecture Help ensure our systems perform well and scale as needed Location This role is based in Murcia.
Join Talan as a Senior Backend Developer and contribute to innovative projects that redefine the tech landscape. In this role, you will leverage your expertise in backend development to build scalable and efficient applications, collaborate with cross-functional teams, and drive technical solutions that propel our clients' success.
Join Scalian as a talented Java Backend Developer specializing in Microservices. In this full-time role, you will play a crucial part in designing, developing, and maintaining scalable backend solutions that enhance our application architecture. You will collaborate with cross-functional teams to deliver high-quality software and ensure optimal performance and reliability.
Elevate Your Career with Zynga!At Zynga, we unite people through the excitement of play. As a premier name in interactive entertainment and a proud subsidiary of Take-Two Interactive, our games have garnered over 6 billion downloads, connecting players in more than 175 countries through fun, strategy, and a touch of friendly rivalry.From exhilarating casino experiences to intense strategic confrontations, challenging puzzles, and social word games, our vast game portfolio has something to delight every player. Renowned favorites and recent hits include FarmVille™, Words With Friends™, Zynga Poker™, Game of Thrones Slots Casino™, and many more!Established in 2007 and headquartered in California, our diverse teams across North America, Europe, and Asia collaborate to create unforgettable gaming experiences. Whether you’re spinning, strategizing, matching, or competing, Zynga is where creativity meets innovation—and where you can advance your career.Join us and become part of the adventure!Position Overview:We are seeking talented software engineers to develop services for games enjoyed by millions of users worldwide every day. These services must scale effectively to handle high user traffic and be crafted with the utmost quality demanded in this competitive landscape. Our developers are expected to maintain cutting-edge technology while generating innovative ideas.Your Responsibilities:Collaborate on backend applications utilizing various programming languages and technologies (Golang, PHP, AWS EC2, Kubernetes, etc.). You will work on legacy code, enhancing, maintaining, and continuously refactoring the backend of our games.Your role extends beyond coding; you will collaborate with mobile developers, data analysts, and systems engineers to integrate components, create technical designs, document processes, and train fellow team members.As a backend engineer, you'll be integrated into our games team, closely collaborating with game design, player experience, mobile, and other departments while contributing to business decisions as part of our technology strategy.
Join our dynamic team as a Backend Developer specializing in the healthcare sector. In this crucial role, you will develop robust backend systems that enhance healthcare delivery and improve patient outcomes. Collaborate with cross-functional teams to design and implement scalable solutions that meet the evolving needs of our clients.
Join our dynamic team at inetum2 as a Java Backend Developer. We are looking for a skilled professional who is passionate about crafting efficient microservices. You will be a crucial part of our innovative projects, utilizing your expertise in Java and microservices architecture to drive our backend development forward.
Role overview Talan is looking for a Mid-Level Backend Spark Developer to join the team in Málaga. The position centers on building and maintaining backend systems with Apache Spark. Collaboration is a key part of the team’s approach, with a shared goal of delivering dependable solutions that support business needs. What you will do Design and develop backend systems using Apache Spark Collaborate with colleagues across different teams to ensure smooth application integration Contribute to optimizing application performance and reliability Location This role is based in Málaga.
We only consider applications based in Spain. Lynx Financial Crime Tech S.A. is actively seeking a talented Junior Backend Developer to join our dynamic team in Madrid. WHY YOU SHOULD CONSIDER THIS OPPORTUNITYAt Lynx Financial Crime Tech S.A., we are at the forefront of AI-driven software development, specializing in identifying and predicting behavioral patterns. Guided by industry experts and academics, we create and implement state-of-the-art self-learning AI technologies. Our platform excels in low-latency transaction processing technologies, available both on-premises and in the cloud.We prioritize VISION, AGILITY, and SPEED to deliver exceptional customer experiences and have established lasting, trust-based relationships with leading financial institutions, fintechs, and trading companies worldwide.Lynx is proud to be an equal opportunity employer, valuing diversity in gender identity, culture, and disability. Our mission is to empower more individuals and businesses to thrive.We embrace a robust risk culture and expect all our professionals, regardless of their position, to adopt a proactive and responsible approach to risk management. WHAT YOU WILL DO IN YOUR ROLEAs a Backend Developer, your primary responsibility will be to contribute to the development of Lynx’s fraud detection application for payment methods.We are looking for someone like you to assist us in various areas:Design and development of new application modulesImplementation of modules in the AWS environmentDesign of continuous integration processesSpecification of development standards EXPERIENCENo prior experience required.EDUCATIONBachelor's Degree in Computer ScienceSKILLS & KNOWLEDGEIntermediate to advanced English proficiencyFamiliarity with the following tools and systems:Linux...
Join Our Team at CodewayAt Codeway, we create innovative consumer applications that are enjoyed by millions worldwide. Our focus is on harnessing the power of AI technology to enhance creativity, promote wellness, facilitate learning, and boost productivity. We take pride in delivering exceptional user experiences characterized by speed and quality, leveraging our robust in-house technology and data capabilities.Barcelona is rapidly becoming a vital hub for Codeway, where we are nurturing a strong engineering culture. Our team values ownership, agility, and high standards of craftsmanship. This is an ideal environment for engineers eager to engage closely with product development, influence key decisions, and see their contributions make an impact swiftly.We are currently seeking a Backend Developer to join our Barcelona team and assist in building and scaling top-notch mobile experiences across our diverse consumer app portfolio.Your RoleIn this position, you will be an integral part of our engineering team, responsible for developing and maintaining the backend services that power our mobile and web applications, which are utilized by millions globally. Your responsibilities will include designing scalable microservices and APIs, as well as supporting AI-driven features and model deployments. You will work on high-performance, reliability-focused products with an emphasis on clean architecture.Key Responsibilities◦ Design, develop, and maintain scalable backend services for mobile and web applications.◦ Build and enhance microservices and RESTful APIs with a focus on maintainable architecture.◦ Deploy, monitor, and support AI models and data-driven services in production.◦ Optimize system performance, reliability, and scalability in distributed environments.◦ Collaborate closely with mobile, frontend, AI, product, and DevOps teams to implement new features.◦ Troubleshoot, debug, and enhance system stability and observability.◦ Ensure code quality through peer reviews, testing, and comprehensive documentation.Your Qualifications◦ A minimum of 2 years of professional experience in backend development.◦ Proficiency in designing and implementing APIs and microservices.◦ Strong understanding of system performance optimization and reliability.◦ Experience with AI model deployment and data-driven services in production is a plus.◦ Excellent problem-solving skills and a proactive approach to improving systems.
Join our innovative team at Sopra Steria as a Backend Microservices Developer! We are seeking a talented individual who is passionate about technology and has a strong command of English. You will be responsible for designing, developing, and maintaining robust backend microservices that drive our applications. Collaborate with cross-functional teams to deliver high-quality software solutions that meet our clients' needs.
Role Overview Talan is hiring a Fullstack Big Data Developer with a strong emphasis on backend work. This position is based in Málaga and targets mid-senior professionals ready to shape data-driven applications. What You Will Do Design and build backend components for scalable big data solutions Work closely with cross-functional teams to deliver reliable applications Focus on maintaining data integrity and optimizing system performance About the Team Collaboration sits at the core of this role. Expect to partner with colleagues from various disciplines to create and refine data products that support business goals.
Join our dynamic team at Voicemod as a Senior NodeJS Backend Developer. You will play a pivotal role in designing and developing innovative backend solutions that elevate our voice modulation technology, enhancing user experiences globally.
T-Systems Iberia seeks a Backend Java Developer to contribute to the design, development, and enhancement of backend applications. Based in Reus, this position plays a part in projects that influence the company’s technology services. Role overview This role focuses on building and refining backend systems using Java. Collaboration with project teams is central, as the work supports ongoing improvements to T-Systems Iberia’s technology offerings. Key responsibilities Design and implement backend features for various applications Work with colleagues to improve existing backend solutions Support projects that drive the company’s technical direction Location This position is based in Reus.
Role Overview anyone-ai is looking for a Backend Developer - AI Trainer based in Spain. This role focuses on building and improving backend systems that support AI training projects. What You Will Do Develop and refine backend infrastructure to support AI model training and deployment. Work closely with team members to optimize systems for real-world AI applications. Contribute technical expertise to help strengthen the performance and reliability of AI models. Collaboration Work alongside a group of professionals committed to advancing AI technology. Teamwork and knowledge sharing are central to this position.
About Us:TransPerfect is a leading provider of translation software with a dynamic and innovative start-up culture. We are on the lookout for a passionate and inventive Backend Developer to join our groundbreaking Artificial Intelligence (AI) team. As a member of this division, you will play a pivotal role in shaping the future of AI within a globally recognized organization. Our AI team, which has evolved over the past decade since the inception of our first machine translation models, is a key driver of innovation in machine translation, generative AI, natural language processing, and automation.We seek an experienced backend developer who is enthusiastic about exploring the limits of technology and making a meaningful impact in the AI domain. You will collaborate with a diverse, global team of professionals from the USA, Spain, Portugal, and India. If you have a strong passion for building robust and scalable solutions that deliver AI capabilities to users, this is the perfect opportunity for you.About the Role:As a Backend Developer, you will address the challenges of document processing, specifically converting complex, unstructured PDFs into well-formatted, editable .docx files. Your objective will go beyond simple text extraction; you will aim to faithfully recreate the visual and structural intent of the original documents, including nested tables, multi-column layouts, font hierarchies, and styling.In this hybrid role, you will lead the research and implementation of our document conversion pipeline. This position requires both strategic decision-making—keeping abreast of existing tools—and hands-on development, blending engineering and AI expertise.You will be responsible for:Comparative Analysis: Conducting comprehensive evaluations of commercial (e.g., ABBYY, Adobe, AWS Textract) versus open-source/AI-native (e.g., Mistral OCR, Docling, Nougat, LlamaParse) solutions.Benchmarking: Establishing metrics for "format fidelity" to objectively assess how effectively a tool reproduces headers, footers, tables, and styles.Pipeline Development: Developing a Python-based workflow that integrates OCR engines with document generation libraries (such as python-docx or Pandoc).
About us:TransPerfect, a leading name in translation technology, is on the lookout for a dynamic and innovative Backend Developer to join our cutting-edge Artificial Intelligence (AI) team. As part of this division, you will have the chance to influence the future of AI within a global framework. Over the past decade, our AI team has evolved into a pivotal force driving innovations in machine translation, generative AI, natural language processing, and automation.We seek an experienced backend developer who is passionate about pushing technological boundaries and making a significant impact in the AI sector. You will collaborate with a diverse, international team of experts from the USA, Spain, Portugal, and India. If you are enthusiastic about developing robust and scalable solutions that enhance AI accessibility, this role is perfect for you.About the Role:As a Backend Developer, you will tackle the critical challenge of transforming complex, unstructured PDFs into well-formatted, editable .docx files. Your mission will be to not only extract text but to faithfully recreate the visual and structural elements of the original documents, including nested tables, multi-column layouts, font hierarchies, and styling.Your responsibilities will include leading the research and implementation of our document conversion pipeline. This hybrid role requires both strategic decision-making regarding existing tools and hands-on development that combines engineering with AI expertise.Responsibilities Include:Comparative Analysis: Conduct thorough evaluations of commercial solutions (e.g., ABBYY, Adobe, AWS Textract) versus open-source/AI-native alternatives (e.g., Mistral OCR, Docling, Nougat, LlamaParse).Benchmarking: Define metrics for
Job Highlights Location: Fully Remote (CET hours preferred) Compensation: €4,700 - €6,100 + stock options Language: Work within a Russian-speaking team About Fundraise Up At Fundraise Up, we are transforming the landscape of nonprofit fundraising by creating a platform that simplifies the donation process, making it quick, seamless, and accessible for everyone. Our cutting-edge technology facilitates tens of millions of dollars in donations worldwide every month. We prioritize innovation that drives results, focusing on faster load times, improved conversion rates, global payment solutions, and an accessibility-first design. Our platform is trusted by some of the world’s leading nonprofits, including UNICEF and the Alzheimer’s Association, among many others. With an impressive 4.9 out of 5 rating on top software review platforms, we are celebrated not only for our impact but also for the exceptional quality of our product. A Truly Global Product We serve nonprofit organizations across North America, the UK, Australia, and Europe, operating in the enterprise segment. We are developing a comprehensive product ecosystem that caters to nonprofits, donors, and partners globally. Our offerings include a modern checkout experience, customizable widgets, donor and organization portals, admin tools, and various internal applications. The backend of our platform is powered by Node.js (Koa, NestJS) and MongoDB, while our frontend uses Webpack, Vue.js, and React, with the majority of our code written in TypeScript. For high-throughput messaging and background tasks, we utilize Kafka (handling millions of events) and Bull (Redis). Analytics are managed via ClickHouse, and Elasticsearch is employed for search functionalities. The Team Our team consists of over 160 product professionals, including more than 80 engineers, distributed across Spain, Poland, Portugal, Georgia, Armenia, Serbia, Turkey, and Cyprus. Many of our developers possess 5-10+ years of experience, fostering a culture rich in technical curiosity and knowledge sharing. We operate with the agility of a small team, where every task is significant, and every voice is valued. Collaboration, robust engineering practices, and a focus on product quality are at the core of our culture. Our biweekly engineering forums provide a platform to share insights and celebrate technical successes. You’ll become part of a team that prioritizes quality, mentorship, and mutual respect. About the Role As a Backend Developer, you will play a pivotal role in architecting the engine that drives our global platform. You will tackle complex challenges within a high-load, distributed system, developing and scaling the infrastructure that processes millions in donations. This position goes beyond mere maintenance; it’s about building a resilient system that supports our mission.
