Senior QA Engineer at interactiv4 | Madrid, Barcelona

Interactiv4 is seeking a highly skilled Senior QA Engineer to join our dynamic teams in Madrid or Barcelona. The ideal candidate will possess extensive expertise in Quality Assurance and the ability to define and implement effective QA strategies for our diverse projects.Key Responsibilities:Understand, implement, and continuously update the QA strategy.Collaborate with team members to establish acceptance criteria and definitions of done for user stories.Develop comprehensive test plans based on user stories and draft test cases for acceptance testing.Estimate, prioritize, plan, and coordinate testing activities.Ensure the testing team effectively utilizes testing tools.Design, develop, and execute automation scripts.Conduct manual and automated testing of the system against both functional and non-functional requirements.Log defects and collaborate with developers for resolution.Perform regression testing post-bug fixes.Provide coaching to QA testers within the team.Ensure testing activities are included in iteration planning and production releases.Qualifications:Experience in developing and automating testing plans for eCommerce projects.Knowledge of various testing levels: unit, integration, and end-to-end.Experience managing quality improvement plans.Proficient in load/stress testing in production environments.Experience with API and frontend testing.Ability to create test plans and generate reports during development cycles.Skilled in defining acceptance criteria for user stories.Preferred Qualifications:Familiarity with the Magento eCommerce platform.Experience with performance testing tools such as Selenium, Jenkins, and Xray.Previous experience as a developer is a plus.Knowledge of data handling and data quality practices.Experience in building continuous integration and continuous delivery workflows.Ability to train teams on quality concepts.

DevOps / Systems AdministratorJoin the leading eCommerce agency and seize the opportunity to become a vital part of our innovative team at Interactiv4.Job OverviewWe are seeking a talented and motivated DevOps professional to enhance our operations at our Madrid office. If you are passionate about technology, enjoy exploring new solutions, and are committed to continuous professional development, you will thrive in our environment.RequirementsEducation: Higher Education Degree or Engineering in Computer Science, Telecommunications, Mathematics, or related fields.Proven experience in:Architecting high-performance systems with continuous deployment.Infrastructure analysis and troubleshooting in high-transaction environments.Terraform, Ansible, JenkinsHTTP Servers (Nginx/Apache)PHP, MySQL, Redis, Varnish, ELK, LDAPOrchestration in on-premise infrastructuresExperience managing external Hosting providers to find optimal solutions based on budget and client needs.Must possess a proactive attitude, strong team collaboration skills, and advanced English proficiency.Preferred QualificationsKnowledge of AWS, GCP, Docker, Kubernetes, and software fine-tuning is a plus.Experience with Magento 2 in System areas (Software, Capabilities, Scalability) is also advantageous.What We OfferWe provide job stability, a permanent contract, and opportunities for professional growth. Work alongside a highly skilled team in a cutting-edge technological environment featuring the latest market solutions.Social Benefits: Meal vouchers, childcare support, transportation assistance, etc.Salary will be commensurate with experience and evaluated during the interview.

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.

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

About Air Apps Air Apps builds AI-powered planning tools for individuals and entrepreneurs. Founded in Lisbon in 2018, the company has grown to offices in Lisbon and San Francisco and reached over 100 million downloads worldwide. As a self-funded, family-founded business, Air Apps focuses on long-term impact and practical solutions that help people manage resources and plan more effectively. QA Automation Engineer – Madrid (Onsite) The QA Automation Engineer will play a key role in developing and maintaining automated testing frameworks and regression test suites. This work helps ensure the quality, stability, and performance of Air Apps’ products across both web and mobile platforms. Collaboration is central to the role. The QA Automation Engineer will work closely with developers, product managers, and other QA professionals to design and implement automated testing strategies, increase test coverage, and improve the efficiency of the testing process. What You Will Do Develop and maintain automated test frameworks and regression suites Work with cross-functional teams to implement effective automated testing strategies Enhance test coverage and improve testing efficiency for web and mobile applications Help ensure the stability, performance, and reliability of Air Apps’ products Work Location and Relocation Support This is a fully onsite position in the Madrid office Relocation assistance is available for qualified candidates

Role Overview T-Systems Iberia is hiring a Customer Security Manager based in Madrid or Barcelona. This position focuses on protecting client data and assets by maintaining and improving security protocols. The Customer Security Manager works closely with teams across the company to strengthen security practices and encourage awareness at every level. What You Will Do Oversee security measures for client data and assets Develop and refine security protocols Advise on security strategy and best practices Collaborate with multiple departments to promote security awareness Location This role is available in Madrid or Barcelona.

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.

Join our dynamic team at zooplusse as a Senior DevOps Engineer. In this pivotal role, you will leverage your expertise to enhance our deployment processes, automate workflows, and improve system reliability. Your contributions will directly impact our product development and technology initiatives, working closely with cross-functional teams to drive innovation.

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

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

Join our dynamic team at Aircall as a Senior Frontend Engineer in our Madrid office! We are searching for a talented engineer who is passionate about building high-quality, scalable web applications. In this role, you will collaborate with cross-functional teams to deliver exceptional user experiences and contribute to our innovative product development efforts.

Ebury empowers ambitious businesses to achieve global growth, and we apply this same philosophy to our team members. We promote innovation, collaboration, and problem-solving while creating an inclusive environment where everyone feels valued and supported to succeed.If you’re a team player eager to revolutionize the way businesses function on a global scale, we invite you to connect with us. Ebury is excited to help accelerate your career and enable you to shape the future.Senior Data Platform EngineerMadrid Office - Hybrid: 4 days in the office, 1 day working from homeBecome a key part of our Data Team at Ebury's Madrid Office.Our ambitious growth strategy hinges on the success of our Data team, and we are looking for a Senior Data Engineer to join our Data Platform team! Our goal is to develop, maintain, and enhance Ebury’s Data Platform focusing on scalable, robust, and innovative frameworks.In your role as a Senior Data Platform Engineer, you will collaborate with your team to develop and improve our Data Platform.

Join Aircall as a Senior Data Engineer specializing in Analytics to drive our data initiatives and support our decision-making processes. You will collaborate closely with cross-functional teams to harness data and deliver actionable insights that will improve our product and customer experience.

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

Role overview dlocal is seeking a Senior AI Engineer to join its Madrid office. The focus of this position is to build and enhance artificial intelligence solutions that strengthen the company's products and services. What you will do Design, implement, and improve AI algorithms for practical use cases Collaborate with cross-functional teams to address technical challenges Support the development and optimization of dlocal's AI systems Requirements Extensive experience in artificial intelligence and machine learning Strong problem-solving skills and a track record of delivering effective solutions Interest in exploring new technologies and working collaboratively Location This role is based in Madrid.

AECOM is on the lookout for a dedicated Senior Engineer specializing in Transmission & Distribution (Secondary) to oversee the design and execution of secondary engineering systems for High Voltage Substations. This role encompasses protection, control, automation, and communication systems, with a strong emphasis on delivering high-caliber engineering outputs throughout all project phases: FEED, Detailed Design, Construction, and Commissioning support. Your expertise will ensure technical compliance, buildability, and the dependable operation of substations.Generate and present secondary design documentation for HV Substations.Formulate protection and control philosophies and contribute to Basis of Design documentation.Execute engineering design for AC/DC auxiliary systems, control circuits, interlocking, and automation interfaces.Assist in relay configuration and protection scheme design, including distance, differential, overcurrent, busbar, and transformer protection.Ensure designs are practical, feasible, and aligned with project objectives, timelines, and budgets.Collaborate closely with the Project Engineer and/or Project Manager to aid in engineering planning, tracking deliverables, and technical coordination.Engage with primary, civil, and SCADA/telecom disciplines to ensure a cohesive and collision-free design.Provide limited technical direction to junior engineers as needed, without formal mentoring responsibilities.

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.

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

Role overview SGS is seeking a DevOps Engineer to join the team in Madrid. The main focus of this role is to enhance continuous integration and deployment processes, aiming to make software delivery more reliable and efficient. What you will do Collaborate with colleagues from various departments to help achieve project objectives Automate tasks and processes to improve workflow efficiency Implement and maintain best practices for managing cloud infrastructure Who we’re looking for Engineers who enjoy solving problems and have a genuine interest in technology Team players who like working together and contributing to the success of projects This position is located in Madrid.

Become a Key Player in AECOM’s Architecture & Design Team in MadridAECOM Buildings + Places is on the lookout for a creative and visionary Senior Architect to enhance our dynamic Architecture & Design team in Madrid. Here is a chance for you to influence the future of urban landscapes through projects that integrate innovation, sustainability, and advanced technology.As a vital member of our team, you'll engage in iconic and multifaceted projects throughout Spain and beyond, collaborating with a diverse range of experts in architecture, engineering, urban design, and sustainability. You'll be involved in the complete project lifecycle, contributing to solutions that make a meaningful difference.Why Join AECOM?We provide exceptional architecture and design services across various sectors such as transportation, hospitality, healthcare, commercial, and mixed-use developments.Our methodology combines high-performance design strategies, digital innovation (BIM), and a commitment to environmental responsibility, ensuring that every endeavor delivers social and sustainable value.Join our global network of 2,500 architects and a local team celebrated for its excellence and creativity.Your Responsibilities:Lead the architectural development of projects from initial concept through to construction, ensuring technical integrity and cost efficiency at every phase.Produce and manage detailed design packages, specifications, and construction documentation to maintain clarity and technical precision.Coordinate with structural, MEP, sustainability, and specialized consultants to achieve fully integrated and technically sound solutions.Ensure adherence to building codes, regulations, and relevant technical standards.Review and confirm project documentation to ensure accuracy and consistency.Align technical decisions with budget constraints, maintaining control over cost-influencing design choices.Propose and implement innovative solutions that improve efficiency, sustainability, and long-term client value.Evaluate and incorporate advanced systems, materials, and technologies that enhance project value and competitive edge.Engage with local manufacturers and suppliers to assess, specify, and incorporate suitable construction systems.Conduct internal technical reviews and quality assurance checks throughout all project phases.Embed sustainable principles and innovative solutions throughout the design process.