Role overview Jobgether seeks a Senior Backend Engineer to advance our B2B product development efforts in Spain. The focus is on building and maintaining backend systems that support solutions for business clients. What you will do Design, build, and maintain scalable backend systems tailored for B2B applications Collaborate with cross-functional teams to deliver secure and reliable APIs Take part in technical decisions aimed at improving system performance and stability Requirements Significant experience in backend development Deep understanding of API design, security, and scalability Ability to work collaboratively with colleagues from different disciplines Contract details This is a B2B contract role based in Spain.

About the Project:Yei Finance is a pioneering decentralized, non-custodial money market protocol built on the Sei network, dedicated to delivering innovative and versatile financial solutions. Users can benefit from competitive yields, borrow via over-collateralized or flash loans, and manage risks using advanced tools—all while harnessing Sei’s remarkable speed and low costs.Our flagship product, Clovis, achieved over $400M in Total Value Locked (TVL) at its peak, generated $5.5M in protocol revenue over the past year, and has established itself as the largest protocol on Sei. Furthermore, we launched the first lending-boosted decentralized exchange (DEX) on Sei, where YeiSwap compounds YeiLend yields to drive over $230M in monthly trading volume and $147M in bridge flow. Clovis is set to expand this successful model by becoming multichain, positioning itself as the cross-chain prime brokerage layer for decentralized finance (DeFi).Who We Are:A dedicated team of builders from esteemed Web3 organizations, including AAVE, Wormhole, Venus Labs, OKX, among others.Supported by leading investors such as Outlier Ventures, Manifold, DWF Ventures, and the Sei Foundation.Collaborating with industry giants like Circle, OKX Wallet, Binance Wallet, Frax, Stargate, and more.The Opportunity:We are on the lookout for a highly skilled Senior Engineer to become part of our core development team and take charge of the design and implementation of our next-generation cross-chain lending protocol. This role will emphasize smart contract security and architecture, as well as the development of essential off-chain services that guarantee the protocol’s efficiency and strength.What You’ll Do:Design, develop, and refine DeFi protocols on EVM-compatible chains, prioritizing contract architecture, security, gas optimization, and upgradability.Create crucial backend and off-chain services using Go or Python, including monitoring systems, liquidation bots, and liquidity rebalancers.Address cross-chain integration challenges, ensuring atomicity, data consistency, and reliable asset bridging in an asynchronous environment.Rapidly iterate in an Agile environment and produce comprehensive documentation and system architecture diagrams.Who You Are:Startup-oriented: Thrives in a dynamic, fast-paced environment.

Join our dynamic team as a Senior Backend Developer at SGS in Madrid, where you will play a pivotal role in advancing our backend architecture and driving a culture of technical excellence. We are seeking an individual with exceptional technical leadership abilities who can serve as a guiding force for our engineering team. You will have ownership over our backend platform and be instrumental in enhancing code quality and engineering standards.In this role, you will work on a cutting-edge SaaS platform developed on .NET 10, primarily leveraging Azure PaaS. Our work environment is international and English-speaking, fostering collaboration across diverse teams.Key Responsibilities:Design, develop, and enhance scalable, secure, and maintainable backend systems.Lead development initiatives, making impactful architectural and technical decisions.Act as a technical mentor and resource for team members, fostering their growth.Manage the complete software lifecycle— from conceptualization and design to deployment, monitoring, and iterative improvement.Integrate with modern and legacy systems seamlessly.Collaborate with product, frontend, and DevOps teams to create comprehensive end-to-end solutions.Promote engineering excellence by advocating for best practices, including Clean Code and SOLID principles.Architect and deploy distributed systems and event-driven architectures.Construct and refine CI/CD pipelines to facilitate rapid, reliable delivery.Ensure system reliability, performance, and observability in live production environments.Guide and support fellow developers through code reviews, knowledge sharing, and technical mentorship.Contribute to technical documentation, ensuring effective knowledge transfer within the team.

About ExoticcaExoticca is a trailblazing online travel agency dedicated to transforming the way long-haul travel is conceived, produced, and delivered to customers. Our mission is to create unforgettable life experiences through exceptional travel opportunities while being committed to providing the best value and caring for our planet. We pride ourselves on exploring unique destinations and crafting extraordinary journeys that leave lasting impressions.Join our vibrant, multicultural team that is experiencing rapid international growth as we strive to establish the most innovative travel company of our time.Our OfferWe are on the lookout for a meticulous and highly organized B2B Group Travel Coordinator to assist our Group Travel team with managing daily operations related to group travel bookings and coordination. This pivotal role is essential in ensuring the smooth planning, organization, and execution of group travel arrangements for travel advisors.Core Responsibilities:Assist the Group Travel team with itinerary planning, creation of bookings, and preparation of travel documentation.Manage administrative tasks such as proposal preparation, payment processing, and travel record maintenance.Communicate effectively with travel advisors to provide updates, address inquiries, and facilitate a seamless group booking experience.Contribute to marketing initiatives by creating travel brochures, itineraries, and promotional content.Work collaboratively with internal teams to optimize group travel workflows and processes.QualificationsPrior experience in travel coordination, customer service, or administrative roles (B2B or group travel experience is a plus).Exceptional organizational skills with meticulous attention to detail and the ability to handle multiple tasks simultaneously.Strong communication and interpersonal skills.Proficient in Microsoft Office Suite (Excel, Word).Able to thrive under pressure and adapt to changing travel schedules.A genuine passion for travel and commitment to excellent customer service.Why Join Us?Become part of an enthusiastic team within the dynamic travel industry.Gain valuable hands-on experience in group travel operations.Opportunities for professional growth and career advancement.Participate in our exclusive FAM Trips.BenefitsCompetitive salary package aligned with responsibilities and experience.Flexible compensation management options for diet, transportation, and private health insurance via Cobee.On-site work model: Offices located in Barcelona.Permanent employment contract from day one.Enjoy travel packages at discounted rates as part of the employee perks!Unlimited coffee, language lessons, and more.

Role overview Metromakro is hiring a Mid-Senior Backend Developer for a long-term temporary contract in Albuixech. The position focuses on designing, building, and maintaining server-side applications. Efficiency, scalability, and security are central to the work. Main responsibilities Design backend architecture that aligns with business requirements Develop and maintain server-side code Keep applications secure and scalable as new features and users are added What to expect This role provides an opportunity to strengthen backend development skills while working alongside a supportive team. The environment encourages ongoing learning and technical growth.

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 mark on every project. Our team is diverse, inclusive, and ever-evolving. We promote ideas, not hierarchies, and invest in the genuine development of each person. If you want to work in an environment where your growth is valued as much as the results, we want to hear from you.Supported by over 60,000 professionals in more than 55 countries and a strong Nearshore model, we connect global capabilities with local trust to create real impact, sustainable growth, and high-value results for our clients.We are looking for: Java Backend DeveloperKey Responsibilities:• Design, develop, and maintain REST APIs and backend microservices in digital payment environments.• Implement new features and enhance existing services related to tokenization, e-commerce authentication, and QR code reading.• Analyze technical and functional requirements, proposing viable solutions alongside the development and architecture teams.• Actively collaborate with frontend teams, architecture, and other banking system environments.• Write, maintain, and execute automated tests (unit, integration, and end-to-end), ensuring software quality.• Participate in code reviews and solution certification processes with payment brands.

About HSP GroupHSP Group stands as a leading provider of global expansion services, dedicated to alleviating the complexities associated with international operations. Our comprehensive offerings encompass legal entity setup, global HR, payroll, compliance, tax, and advisory, empowering our clients to accelerate growth, ensure compliance, and mitigate risks in new markets.As a pioneering force in the rapidly evolving sector of global expansion management, we are a Stage B startup committed to delivering exceptional value through continuous innovation, execution, and a focus on customer satisfaction. Join our small yet highly skilled and dynamic team, and make a significant impact on our company's trajectory.About Gateway HRGateway HR is our cutting-edge HRIS platform, meticulously crafted for global expansion management. It integrates seamlessly with Gateway GXM, our premier global entity management platform, facilitating functionalities like automated payslip generation, intelligent contract management, and effortless cross-border compliance.Our platform ecosystem incorporates AI-driven document recognition and classification, utilizes an event-driven serverless architecture on Azure, and encompasses a broad range of integrated tools tailored to HR, entity management, and compliance.Job OverviewThis position is fully remote.We seek a talented Lead Backend Engineer to spearhead the technical strategy of Gateway HR and enhance its integration with GXM. Your role will blend hands-on platform development with technical leadership over external development teams, advancing the architecture, crafting innovative features, and upholding HSP's engineering standards throughout the codebase.This role is not purely managerial; you will engage in coding, PR reviews, architectural discussions, and feature delivery while establishing high standards for quality and performance.

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 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.

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.

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.