Senior Full-Stack Software Engineer & AI

N-iX is seeking a Senior Full-Stack Engineer (Spanish-speaking) to enhance our dynamic team.Our client stands as one of the foremost global fashion retailers, operating across more than 200 markets through a blend of e-commerce platforms and thousands of physical stores worldwide. This company expertly manages the entire fashion value chain—from design and manufacturing to distribution and retail—emphasizing flexibility, digital integration, and sustainability.Technology is pivotal in all facets of the business, including stores, e-commerce, logistics, and supply chain. Our engineering teams operate in small, autonomous product teams, taking full ownership of the solutions they develop. Engineers are encouraged to grasp the broader business context, engage directly with stakeholders and users, and play an active role in technical and product decisions.

Join Version 1 as a Senior Full Stack Engineer and play a pivotal role in developing innovative software solutions that drive our business forward. You will collaborate with cross-functional teams to design, implement, and maintain robust applications while leveraging your expertise in both front-end and back-end technologies. If you are passionate about coding, love tackling complex challenges, and are eager to work in a dynamic environment, we want to hear from you!

jobgether is looking for a Senior Full Stack Engineer based in Spain. This role centers on building and maintaining both front-end and back-end systems that support the company’s job search platform. Role overview As a Senior Full Stack Engineer, the focus will be on designing, developing, and supporting applications that deliver a smooth and responsive user experience. The position involves working across the technology stack to ensure applications perform reliably and efficiently. What you will do Design and implement features for both front-end and back-end systems Maintain and improve application performance and responsiveness Work with cross-functional teams to deliver software that meets user needs Requirements Strong background in software development Proficiency in multiple programming languages Solid understanding of web technologies This position supports jobgether’s mission to simplify job searching by delivering reliable and user-friendly software solutions.

About the CompanyJoin a dynamic and innovative SaaS company that is revolutionizing the way leading consulting firms and researchers acquire insights. Our client’s state-of-the-art survey platform empowers users to swiftly craft high-quality surveys, enhance collaboration, and achieve impactful results—all while avoiding the pitfalls of outdated tools and processes. Trusted by top consultancies worldwide, they are on a mission to expand their team to develop high-value features and improve code quality.The RoleOur client is in search of a Senior Full-Stack Engineer to become a pivotal member of a small yet highly skilled engineering team. The ideal candidate is a versatile generalist with extensive expertise in TypeScript, who flourishes in an environment characterized by autonomy and minimal meetings. You will be instrumental in both developing new products and enhancing a solid existing codebase, with a focus on maintaining engineering excellence and clean coding practices.What You’ll Do Innovate and implement new features across the entire stack (frontend + backend). Work collaboratively with senior engineers, product managers, and leadership. Engage in a thorough code review process that emphasizes quality and maintainability. Take ownership of projects from conception to deployment in a remote-first, asynchronous work environment.

Join Version 1 as a Senior Full Stack Engineer and be part of a dynamic team that is dedicated to delivering innovative digital solutions. You will play a crucial role in the development of full-stack applications, utilizing the latest technologies in the digital, data, and cloud sectors. Your expertise will contribute to crafting scalable solutions that meet client needs.

Jobgether is looking for a Senior Full-Stack Engineer with strong experience in Python and React. This position is based in Spain and centers on building and maintaining web applications that improve how users interact with our platform. What you will do Design, develop, and maintain web applications using Python and React Work closely with team members to deliver features that enhance the user experience Contribute to technical decisions and help set the direction for ongoing projects Mentor junior developers and support their growth Requirements Strong knowledge of both front-end and back-end development Proficiency in Python and React Experience working in an agile team setting Ability to collaborate effectively and communicate technical concepts clearly

Key Responsibilities- Design the architecture of web pages based on provided layouts.- Develop reusable code for future projects.- Implement mobile-first design principles to ensure optimal user experience on smartphones.- Monitor and enhance website performance for speed and scalability.- Exhibit self-management skills and effectively prioritize tasks.Essential Qualifications- Proficiency in Laravel, PHP, MySQL, HTML5, CSS3, JavaScript, Sass, Git, VueJS, and TailwindCSS.- Minimum of 3-5 years of proven experience in PHP Laravel, HTML, CSS, and JavaScript development.- Deep understanding of SCSS and Blade templates (Laravel).- Familiarity with VueJS, AMP, and TailwindCSS is preferred.- Experience in responsive and adaptive design methodologies.- Knowledge of SEO best practices.- Proven experience with collaborative version control systems.- Background in an agile team environment.- Excellent English communication skills, both verbal and written.- Strong grasp of Object-Oriented design principles and methodologies.- Experience with databases, including relational and NoSQL databases.- Competence in integrating third-party APIs and libraries.- Experience with search servers (e.g., Elastic or Algolia) is a plus, but not mandatory.- If you have a GitHub account or have contributed to open-source projects, we'd love to hear about it in your cover letter.

About Stack AIStack AI is on a mission to make Large Language Models accessible to everyone through an intuitive no-code platform that seamlessly integrates leading AI models (OpenAI, Anthropic, Google), various data sources (OneDrive, Google Drive, Notion), and essential SaaS tools. With the backing of Y Combinator and Gradient Ventures, we have amassed thousands of users and secured hundreds of paying clients, including prominent public companies and unicorns.The RoleWe are seeking a talented Senior Frontend Engineer who excels in execution. This role focuses on optimizing and enhancing existing features rather than creating flashy new ones. You will collaborate closely with our Product Design team to transform detailed visual specifications into clean, production-ready code.Main Mission: Alleviate bottlenecks within our Product Design team by taking charge of incremental UX/UI enhancements to our current features and codebase.What You'll DoOptimize and enhance existing frontend code and features.Implement gradual UX/UI enhancements based on detailed design specifications (no design skills required).Work independently with minimal code review—your code should be clean and dependable enough for others to trust without hesitation.Collaborate with Product Designers and Engineers to ensure effective execution.Focus on impactful improvements that enhance product quality and user experience.Refactor and improve legacy code.What We're Looking ForMust-haves:Exceptional code quality: Produce clean, maintainable, and trustworthy code that requires minimal review.Strong execution: Ability to ship quickly and effectively.Senior-level experience: Over 5 years of experience with React, TypeScript, Next.js, and modern frontend technologies.Accountability: You take ownership of your decisions and act responsively.Autonomy: You can manage features from start to finish without needing guidance.Pragmatism: You are ready to engage in detail-oriented, iterative work critical to product success.Technical excellence: A mentor who can share knowledge rather than someone who needs to be taught.Nice-to-haves:Experience with additional frameworks or tools.Familiarity with agile methodologies.Passion for user experience and design.

ResilientCo is looking for a Full Stack Engineer in Madrid to help build and improve applications across both front-end and back-end systems. This position involves working closely with colleagues from different areas to deliver projects that support the company's technology goals. Role overview This role focuses on developing features and maintaining systems that serve users and internal teams. Expect to contribute to both user interfaces and server-side logic as part of a collaborative group. Collaboration Full Stack Engineers at ResilientCo participate in team discussions and planning, sharing ideas to improve how applications look and function. Working with designers, product managers, and other engineers is a regular part of the job. Location This position is based in Madrid.

Join causaprima as a Senior Full-Stack Engineer, where your expertise will shape engaging interfaces for our agents. You will develop intuitive dashboards, approval workflows, real-time data visualizations, and a counterparty portal that enhances connectivity across our network.Your ResponsibilitiesReal-Time Communication & Architecture — Implement WebSocket-driven event streaming, agent notification routing, and dynamic query management.Visualizing Financial Forecasts — Create probabilistic cash forecasts with uncertainty bands and detailed insights into invoices and assumptions.Counterparty Portal Development — Build a user-friendly portal for suppliers and customers to track invoice statuses, manage disputes, and view payment commitments securely.Approval Interface Design — Craft a human-in-the-loop interface for reviewing agent reasoning and verifying source documents before action approvals.Session Management & Authentication — Integrate OAuth 2.0 / OIDC, manage JWT with tenant context, and handle session lifecycles with Redis, including magic link token generation for the counterparty portal.API/BFF Layer Development — Develop a TypeScript service layer to mediate between the React frontend and the Python agent backend, securing REST, GraphQL, and WebSocket endpoints.MCP Server Implementation — Establish a Model Context Protocol endpoint for integrating external AI agents, facilitating interoperability across the supply chain.Qualifications5+ years of experience architecting TypeScript/React applications in production environments.Strong systems design skills, with a focus on components, contracts, data flows, and failure modes.Extensive experience in real-time architectures, including WebSockets and event-driven frontends.Proven ability in designing data visualization systems and API layers for multi-tenant SaaS applications.Solid understanding of frontend security practices, including CSP, CSRF, session management, and input sanitization.Proficient in using AI coding tools with strong code review capabilities to ensure secure outputs.Possess a strong product sense, making data-backed recommendations and articulating opinions effectively.

Veeva Systems is a purpose-driven leader in the cloud industry, dedicated to expediting the delivery of therapies to patients in the life sciences sector. As one of the fastest-growing SaaS companies globally, we've achieved over $2 billion in revenue last fiscal year, with substantial growth opportunities on the horizon.Our core values are integral to our success: Do the Right Thing, Customer Success, Employee Success, and Speed. In 2021, we made history by becoming a public benefit corporation (PBC), which legally mandates us to balance the interests of our customers, employees, society, and investors.As a Work Anywhere organization, we offer flexibility to work from home or in the office, enabling you to thrive in your preferred environment.Join us to transform the life sciences sector, as we are committed to making a meaningful impact on our customers, employees, and communities.The RoleAt Veeva Link, we are developing the intelligence layer for life sciences by crafting connected data applications that accelerate drug development and enhance patient outcomes. Our belief is simple: the combination of high-quality data and cutting-edge software provides immense value.Execution is paramount. We prioritize speed, accuracy, and quality in our daily work. Our engineering approach focuses on clear product definitions leading to precise technical designs, leveraging a modern tech stack to deliver dependable applications with an excellent user experience.Our initiatives focus on two primary areas:Data-Driven InsightsWe create sophisticated applications that map and analyze global scientific and medical expertise, delivering impactful insights and AI-driven intelligence. Our engineers tackle complex data modeling, entity resolution, and advanced machine learning challenges.Intelligent Business Workflows

Ebury empowers ambitious businesses to achieve global growth, and we apply the same philosophy towards our team members. We promote innovation, collaboration, and problem-solving within a culture that values belonging, support, and empowerment for everyone to succeed.If you are a collaborative individual eager to revolutionize business operations globally, we invite you to connect with us. Let's discuss how Ebury can elevate your career and help you shape the future.Senior Full-Stack Developer - FintechMálaga Office - Hybrid: 4 days in the office, 1 day remoteBecome a part of our Technology Team at Ebury’s Málaga Office.Impact-Driven Senior Full-Stack Developer Needed: Shape the Future of Our Client Platform with Your ExpertiseAre you passionate about fostering growth in the digital financial ecosystem? Do you thrive in a culture where you can take full ownership of product development and focus on results? Elevate our client trading and payments platform as a Senior Full-Stack Developer and deliver top-notch solutions to our global clients alongside our vibrant teams in South America and Europe.We seek individuals with the right attitude, a strong work ethic, and an entrepreneurial spirit who are willing to tackle challenging questions. You should be guided by data while being driven to solve customer issues. A natural curiosity and a commitment to continuous learning are essential. You should be proficient in various programming languages, frameworks, and tools, with well-informed opinions on the best solutions to address our most significant challenges.Why Join Ebury?Looking to thrive in a high-growth environment? We are in a constant state of expansion. Do you aspire to create a better world? We advocate for inclusion and stand firm against all forms of discrimination. We have zero tolerance for intolerance and celebrate the diversity that contributes to our success as a modern organization.At Ebury, you will find an internal group dedicated to discussing how to promote a diverse and inclusive workplace for all members of the Technology Team. If you’re excited about this job opportunity but feel your background doesn’t perfectly align with the job description, we encourage you to apply anyway. You might be the ideal candidate for this or other positions we have available.Prepare to Elevate Your Career:In our Tech team, your professional growth is paramount. Thanks to our career development programs, you will have the opportunity to advance your skills and expertise.

About the Role Talan is looking for a Senior Full Stack Developer in Málaga. This position works across both front-end and back-end technologies to design and build applications that improve user experience and support business goals. What You Will Do Develop and maintain web applications from concept through deployment Collaborate with team members to deliver high-quality solutions Apply experience in both front-end and back-end development to solve complex problems Contribute to technical decisions and share knowledge with colleagues Location This role is based in Málaga.

N26 is looking for a Senior Full-Stack Security Automation Engineer to join the Security Engineering team in Barcelona. This team builds and scales the N26 Security Platform, developing internal products and automation systems that support specialized teams across the company. The work directly affects the security of millions of users. This position offers autonomy and the chance to solve complex technical problems. Senior engineers here lead technical decisions and translate detailed security requirements into scalable software. The focus includes GenAI and LLM initiatives, where the role involves building core architecture to safeguard sensitive data and improve data governance. Responsibilities extend beyond assessing AI-related risks to designing and implementing mitigation strategies. The scope covers enhancing secure-by-design features throughout the technology stack, supporting the resilience of the N26 ecosystem. By delivering solutions for Product Security Programs, this engineer helps teams ship secure code more quickly. What you will do Design and own end-to-end solutions: Lead the architecture and implementation of full-stack features, including backend services and internal dashboards. Build the security platform: Develop tools and platforms that enable security teams to automate threat detection, incident response, and vulnerability management at scale. Enable the organization: Work with teams across the security department to create shared infrastructure and automation for efficient operations. Drive technical excellence: Select appropriate tools and maintain high standards for code quality, automated testing, and system reliability.

Teleperformance Spain is hiring a Spanish-Speaking Customer Service Representative for Booking in Barcelona. This position centers on assisting clients with booking-related questions and resolving service issues. Role overview As part of the customer service team, the main focus is to support customers in Spanish. The role involves handling inquiries, addressing concerns, and ensuring each customer receives attentive and accurate service. What you will do Respond to client questions and requests about booking services Resolve issues efficiently and professionally Communicate clearly in Spanish to deliver a positive customer experience Requirements Fluency in Spanish Strong communication skills Interest in customer service and problem-solving

Role overview Universally Speaking is seeking a LATAM Spanish Games Tester to join the team in Madrid. This position centers on linguistic quality assurance for video games, with a focus on language accuracy and cultural relevance for players. The role requires hands-on testing and regular collaboration with localization teams to uphold high standards in game localization. What you will do Collaborate with testers, translators, and developers to spot, report, and help resolve language-related issues within games. Review all in-game language elements, including menus and messages, to confirm accuracy and cultural appropriateness. Apply Universally Speaking’s linguistic quality assurance (LQA) methods to meet industry standards. Log and track linguistic bugs using professional bug databases, ensuring that fixes meet expectations. Develop expertise in LQA by managing projects ranging from indie releases to major AAA titles through all phases of the testing cycle. Create and refine test cases, document findings, and contribute to best practices in LQA. Work closely with developers and other testers early in the process to help shape localization testing procedures. Identify workflow improvements, share insights, and help raise quality standards within the team. Location This position is based on-site in Madrid, Community of Madrid, Spain.

Join Groupon, a leading marketplace where customers explore new experiences and services daily, and where local businesses thrive. We have partnered with over a million merchants worldwide, connecting more than 16 million customers with deals across diverse categories. In a landscape often dominated by e-commerce giants, Groupon stands out as one of the few platforms genuinely committed to propelling local businesses forward based on performance.We are on an exciting journey to radically transform our business through a relentless focus on results. Despite having thousands of employees across multiple continents, we foster a culture that inspires innovation, rewards risk-taking, and celebrates success. Here, your impact can be immediate due to our scale and the rapid pace of our transformation. We blend the best of both worlds: we have the resources and scale of a large company, yet we empower individuals to have significant autonomy and drive meaningful change.About the RoleHybrid from Madrid or ValenciaAs a Full Stack AI Engineer, you will engineer the foundation of our proprietary internal platform that democratizes AI across the organization. This role goes beyond standard full-stack duties; you will construct the framework that enables various teams to develop autonomous AI agents. Your responsibilities will include designing reasoning flows, integration layers, and agent logic that empower AI to execute complex business tasks at scale. This is applied AI engineering: focusing on sophisticated system design and relentless execution rather than model fine-tuning. You will collaborate daily with a newly formed team of engineers and work closely with the AIGO team and cross-functional partners across Global Operations, Customer Satisfaction, and Engineering.

ABOUT REIZ TECHAt Reiz Tech, we transcend the traditional boundaries of an IT company by serving as a comprehensive, trusted advisor throughout the entire business lifecycle. With a rapidly expanding global footprint across more than 30 countries, we are committed to delivering all-encompassing IT solutions. Our talented team thrives in a remote work environment where decentralized leadership fosters enhanced communication, swift decision-making, and remarkable flexibility.ABOUT THE ROLEWe are seeking an enthusiastic Spanish-speaking Sales Executive to join our dynamic Sales team, focusing on the growth of our innovative fintech products in the LATAM region. You will play a pivotal role in establishing commercial traction by developing a robust pipeline, conducting discovery calls, and securing pilot agreements with fintech companies, lenders, digital wallets, and various financial institutions across the region.Applications are welcomed from candidates based in Mexico, Colombia, Argentina, Chile, and Spain.KEY RESPONSIBILITIESDevelop and maintain a comprehensive sales pipeline within LATAM, including prospecting and following up on inbound leads.Conduct discovery calls, qualify opportunities, and facilitate contracts and pilot agreements.Establish and nurture partner/referral networks, including consultancies, integrators, and legal/fintech advisors.Collaborate with product and technology teams to design solutions and define integration scopes.Ensure CRM accuracy and deliver weekly reports on pipeline status (stages, next steps, potential blockers).QUALIFICATIONSFluency in Spanish (both written and spoken) and proficiency in English.Minimum of 3 years of B2B sales experience in fintech, SaaS, payments, lending, or risk and collections.A proven track record of successfully closing deals, including pilots, subscriptions, and enterprise contracts.Proficient in outbound sales and capable of building a sales pipeline from the ground up.Ability to work autonomously and thrive in a fast-paced, early expansion phase.PREFERRED QUALIFICATIONSExperience selling to banks, neobanks, wallets, lenders, or payment service providers in LATAM.An established network in Mexico, Colombia, Argentina, or other key markets.Knowledge of Portuguese is a plus.Familiarity with API-driven and integration-heavy product offerings.WHAT WE OFFERSalary range: €1400 - €2000 (gross) per month, plus quarterly performance-based commissions.Fully remote work with flexible hours and vacation policy.A diverse and inclusive international workplace that fosters collaboration.Internal mentorship program.Funding for professional development opportunities, including educational materials and certification exam fees.

Join Fresha as a Sales Growth Specialist, where you will play a pivotal role in driving our growth in the vibrant markets of Romania and Spain. You will leverage your linguistic skills in Romanian and Spanish to connect with potential clients, understand their needs, and offer tailored solutions that align with our product offerings. Your expertise will help us expand our customer base and enhance our market presence.