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Senior Backend Developer at aleph | Madrid, Spain

Aleph

Full-time|On-site|Madrid, Spain

Join the Digital Revolution!At Aleph, we are not just participating in the digital advertising landscape; we are actively shaping its future. As representatives of the world’s leading platforms, including TikTok, Amazon, Google, and nearly 55 others, we operate across 130+ markets worldwide.Our mission is to empower advertisers and brands to harness the full…

Dec 10, 2025

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Java Developer at neoris | Madrid, Spain

neoris

Full-time|On-site|Madrid, Spain

Role overview neoris is looking for a Java Developer to join the team in Madrid. This position focuses on building and maintaining Java applications that support client projects and digital solutions. What you will do Design, develop, and maintain applications using Java Work closely with colleagues from different disciplines to deliver project goals Support high standards for software quality throughout the development process Location This role is based in Madrid, Spain.

Apr 14, 2026

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CRM Architect

Aleph

Full-time|On-site|Madrid, Spain

Join our dynamic team at Aleph as a CRM Architect, where you will play a pivotal role in designing and implementing innovative Customer Relationship Management solutions. Your expertise will help us to enhance our customer engagement strategies and improve overall user experience.

Mar 31, 2026

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Senior Backend Developer

SGS

Full-time|On-site|Madrid

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.

May 4, 2026

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Senior Data Engineer at neoris | Madrid, Spain

neoris

Full-time|On-site|Madrid, Spain

Join neoris as a Senior Data Engineer and leverage your expertise to drive data-driven solutions. In this role, you will design, develop, and maintain robust data pipelines, ensuring the seamless flow of information across our systems. Collaborate with cross-functional teams to enhance our data infrastructure and contribute to the overall success of our data initiatives.

Apr 30, 2026

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Senior Backend Engineer at Aircall | Madrid

Aircall

Full-time|On-site|Madrid Office

Join Aircall, a unicorn and AI-driven customer communications platform, serving over 22,000 companies globally. We are innovating the way businesses communicate by seamlessly integrating voice, SMS, WhatsApp, and AI into a unified workspace.Our growth stems from a straightforward principle: empower teams to work more efficiently. Our AI Voice Agent automates routine calls, AI Assist enhances post-call tasks, and AI Assist Pro provides real-time support, enabling individuals to excel in their roles. This leads to increased revenue, quicker resolutions, and confident team scalability.With headquarters in Paris and a robust North American presence in Seattle, alongside teams in Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City, we have developed a beloved product and a rapidly expanding business, supported by top-tier investors and driven by swift AI advancements across various product lines.At Aircall, you will be part of a dynamic organization. We are ambitious, focused on product excellence, and committed to execution, ensuring visible impacts, quick decisions, and genuine growth.Our Work Culture: We are deeply customer-focused, data-informed, and dedicated to delivering significant outcomes. We prioritize ownership, ongoing learning, and a thoughtful pace. If you thrive in a collaborative, fast-paced setting where trust and impact are key, you will feel right at home here.Role Overview:As a Senior Backend Software Engineer, you will play a crucial role in designing, developing, deploying, and maintaining essential features that enhance customer value through voice integration.You will be expected to advocate for best practices and provide mentorship within your team and across the engineering department.We are driven by quality, excellence, and agility, and you will contribute to elevating these standards.Utilizing a diverse range of backend technology stacks, tailored to meet specific needs and consistently hosted on AWS, we create resilient services that add value to voice integration and seamlessly connect with our clients' critical business tools such as CRM, Helpdesk, E-Commerce, and more.

Feb 13, 2026

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Senior Java Developer - SBS - Madrid/Valencia

Sopra Steria

Full-time|On-site|Madrid

Join our innovative team at Sopra Steria as a Senior Java Developer! In this pivotal role, you will be responsible for developing high-quality software solutions, optimizing application performance, and collaborating with cross-functional teams to deliver exceptional results. Your expertise in Java will be key to driving our projects forward.

Jan 27, 2026

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Backend Engineer at Pleo | Madrid, Lisbon

Pleo

Full-time|On-site|Madrid, Lisbon,

Managing expenses shouldn’t be a headache. At Pleo, we’re revolutionizing the way businesses handle spend management by creating solutions that simplify financial processes for both finance teams and employees. Our goal is to empower organizations to 'go beyond' traditional methods.Since our inception 10 years ago, we’ve embraced the philosophy of ‘Pleo’, meaning ‘more than you’d expect’, which has been pivotal to our success.We are currently at a significant juncture in our growth journey; every decision we make affects our more than 40,000 customers, our business, and our collective achievements. We are looking for individuals who take pride in identifying customer needs, transforming complex challenges into straightforward solutions, and respectfully challenging the status quo. With our ambitious goals ahead, we are a dynamic and diverse team of over 850 individuals from more than 100 nationalities, dedicated to shaping the future of business spending.About the RoleWe are seeking a skilled Backend Engineer to join our innovative team at Pleo. In this position, you will play a crucial role in building and scaling our backend systems, engaging in exciting projects as we expand our product and service offerings. If you are passionate about solving intricate technical challenges and thrive in a culture that values transparency, collaboration, and innovation, we invite you to apply.What You’ll Be DoingAs a Backend Engineer, your responsibilities will include:Designing, building, and maintaining scalable microservices primarily using Kotlin.Collaborating with cross-functional teams to develop innovative solutions across various domains such as Platform, Services, and SMB.Analyzing system performance and implementing optimizations to ensure high reliability and scalability.Participating in code reviews and post-mortems while mentoring fellow engineers.Proactively addressing technical debt and guiding the team through challenges and migrations.What You BringThis role is ideal for you if you possess:Experience in server-side languages, particularly Kotlin, along with expertise in distributed systems, microservices, and cloud environments (e.g., AWS, Kubernetes).Proficiency with relational databases such as PostgreSQL and familiarity with testing frameworks (e.g., JUnit, Testcontainers).

Mar 11, 2026

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Backend Engineer in Madrid - Join airapps

airapps

Full-time|On-site|Madrid

About the Role airapps is looking for a Backend Engineer in Madrid to help shape the systems behind our platforms. This role centers on building and improving backend architecture that supports our applications. What You Will Do Design, implement, and maintain scalable backend systems Work closely with teams across the company to deliver new features and solutions Contribute to the ongoing improvement of our backend platforms Location This position is based in Madrid.

Apr 16, 2026

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SAP FICO Consultant - Join Our Dynamic Team

aleph

Full-time|On-site|Madrid, Spain

Role overview aleph is seeking an SAP FICO Consultant based in Madrid, Spain. This role centers on supporting clients with SAP Financial Accounting and Controlling, aiming to enhance their financial processes and results. What you will do Work closely with teams from different areas to deliver SAP FICO solutions tailored to client needs Use your knowledge of SAP Financial Accounting and Controlling to solve client challenges Take part in projects that strengthen clients' financial operations Requirements Proactive mindset and attention to detail Strong skills in problem solving Experience working with SAP and a desire to make a meaningful contribution This position is a good fit for those who enjoy working with SAP and want to help clients achieve better financial outcomes as part of the aleph team.

Apr 24, 2026

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Pest Control Technician - Madrid, Spain

Rentokil Initial

Full-time|On-site|Madrid

Join our dynamic team at Rentokil Initial as a Pest Control Technician in Madrid, Spain! In this vital role, you will be responsible for ensuring the safety and satisfaction of our customers by effectively managing pest control services. You will utilize advanced techniques and equipment to identify and eliminate pests, ensuring our clients' environments remain pest-free.

Mar 16, 2026

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Workplace Architect

Aleph

Full-time|On-site|Madrid, Spain

About Aleph Aleph connects brands with audiences through digital advertising. As a partner to major platforms including TikTok, Amazon, and Google, Aleph operates across more than 130 markets and represents nearly 55 digital platforms worldwide. The company builds partnerships that help clients get the most from their advertising investments. Learn more at https://alephholding.com/. Workplace Architect Role , Madrid, Spain The Workplace Architect will join a team focused on expanding digital advertising solutions. Aleph values initiative and recognizes contributions that help businesses connect with audiences locally and globally. This role offers the chance to work alongside experts in an environment where skills and ideas matter.

Apr 20, 2026

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Senior Developer - SBS Madrid

Sopra Steria

Full-time|On-site|Madrid

Join our dynamic team at Sopra Steria as a Senior Developer in Madrid! We are looking for an innovative and experienced professional to contribute to our exciting projects in a collaborative environment. In this role, you will leverage your technical skills to deliver high-quality software solutions while mentoring junior developers.

Jan 27, 2026

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Java Backend Developer

EPAM NEORIS

Full-time|On-site|Madrid, Spain

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.

Apr 17, 2026

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Backend QA Engineer in Madrid

airapps

Full-time|On-site|Madrid

Role Overview airapps is hiring a Backend QA Engineer based in Madrid. This position focuses on quality assurance for backend systems, helping to keep applications reliable and up to standard. What You Will Do Support QA processes for backend applications Work closely with team members to identify and resolve issues Help ensure applications perform as intended and meet quality expectations Who We’re Looking For Detail-oriented approach to testing and problem-solving Comfortable working within a collaborative team Motivated to deliver solid, dependable software Location This role is based in Madrid.

Apr 16, 2026

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Sales Development Representative in Madrid (Hybrid)

Convera

Full-time|Hybrid|Madrid

Join Convera as a Sales Development Representative in our vibrant Madrid office! In this hybrid role, you will be pivotal in driving our sales strategy, engaging with potential clients, and helping to expand our market presence. Your ability to connect with prospects will contribute to our overall success and growth.

Mar 25, 2026

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Backend Magento Developer

Interactiv4

Full-time|On-site|Madrid, Barcelona y Zaragoza

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.

Sep 26, 2018

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Senior Ignition Developer at inetum2 | Madrid

inetum2

Full-time|On-site|Madrid

Join the dynamic team at inetum2 as a Senior Ignition Developer, where you will be instrumental in developing and implementing innovative solutions using Inductive Automation's Ignition platform. You will work in a collaborative environment that values creativity and forward-thinking, helping our clients achieve their automation goals.

Oct 21, 2025

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Senior Frontend Developer at SGS | Madrid

SGS

Full-time|On-site|Madrid

Join our team as a Senior Frontend Developer at SGS, where you will be integral in creating innovative, scalable, and user-friendly web applications. You will collaborate closely with the UX/UI Technical Leader to establish and refine our frontend architecture, guaranteeing an exceptional user experience across our suite of products.Your role will involve working hand-in-hand with product managers, designers, and backend engineers to convert business needs into clean and efficient frontend solutions.Key Responsibilities:Design, develop, and maintain scalable, high-performance frontend applications.Take ownership of the frontend architecture, enhancing maintainability and scalability.Work closely with UX/UI designers to create intuitive and visually appealing user experiences.Translate product and design specifications into clean, efficient, and reusable code.Advocate for best practices in frontend engineering, including Clean Code principles, testing strategies, and component design.Develop and maintain design systems and reusable component libraries.Optimize application performance, including load times, rendering efficiency, and responsiveness.Ensure cross-browser compatibility and a responsive design across various devices.Integrate frontend applications with REST APIs and/or GraphQL services.Contribute to CI/CD pipelines and enhance frontend delivery processes.Provide support and mentorship to other developers through code reviews and knowledge sharing.Contribute to technical documentation to ensure a shared understanding within the team.

May 4, 2026

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Senior Backend/Platform Engineer

Aircall

Full-time|On-site|Madrid Office

Join Aircall as a Senior Backend/Platform Engineer, where you will play a crucial role in enhancing our platform's infrastructure and backend systems. You will collaborate with cross-functional teams to design and implement scalable solutions that ensure seamless communication for our users. If you are passionate about crafting high-performance systems and thrive in a dynamic environment, we would love to hear from you!

Mar 26, 2026

Java Developer at neoris | Madrid, Spain

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