Senior Fullstack Software Engineer jobs in Barcelona – Page 3 | RoboApply Jobs

Senior Fullstack Software Engineer jobs in Barcelona· Page 3

Results 41–60 of 530 for “Senior Fullstack Software Engineer” in Barcelona.

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Monzo Bank logo
Full-time|On-site|Barcelona

Join Monzo as a Software Engineer II and contribute to our mission of making money work for everyone. In this role, you will be part of a dynamic team focused on building innovative solutions to enhance our banking experience. You will collaborate with cross-functional teams, write clean and maintainable code, and participate in the full software development…

Apr 13, 2026
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qonto logo
Full-time|Remote|Barcelona

Our Mission: Empowering small and medium-sized enterprises (SMEs) to flourish in their business endeavors by providing Europe's premier financial workspace. We integrate top-tier tools such as seamless invoicing, spend management, and pre-accounting with attentive 24/7 support, all aimed at simplifying financial processes for businesses.Our Journey: Established by Alexandre and Steve in July 2017, Qonto has swiftly earned the trust of over 600,000 customers. With our dedicated team of more than 1,600 Qontoers, we've been honored in the LinkedIn Top Companies French ranking!Our Values:Customer Focus | We prioritize the needs of our customers above all.Ownership | Take responsibility for your work and drive results.Teamwork | Collaborate effectively to achieve common goals.Mastery | Strive for continuous improvement and excellence.Integrity | Uphold ethical standards and respect everyone.Our Beliefs: At Qonto, we are dedicated to cultivating an inclusive environment where all individuals can excel. We evaluate candidates solely based on skills and potential, and we proudly support diversity within our workforce, comprising 55% international team members, 44% women, and 20% parents. Join us in fostering a workplace that embraces diversity and individuality.Learn about our initiatives for a discrimination-free hiring process.

Jul 28, 2021
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Delivery Hero logo
Full-time|On-site|Barcelona

Join our dynamic team at Delivery Hero as a Senior Backend Engineer specializing in Kotlin. In this role, you will be pivotal in shaping our quick commerce solutions, ensuring seamless and efficient backend processes that cater to our growing customer base.Your expertise will help us innovate and enhance our platform, working closely with cross-functional teams to deliver high-quality, scalable solutions. If you are passionate about backend technologies and eager to make a significant impact in a fast-paced environment, we want to hear from you!

Sep 11, 2025
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Lodgify logo
Full-time|On-site|Spain

Join Lodgify as a Senior Automation QA Engineer, where you'll leverage your technical expertise to embed quality in our software development lifecycle. Collaborate closely with developers to create robust and scalable test frameworks, integrate innovative AI-driven solutions, and lead initiatives towards achieving seamless continuous delivery across our diverse product range. In this dynamic and fast-paced environment, you'll have the opportunity to enhance quality standards while continuously seeking ways to optimize processes and deliver impactful results.

Jun 23, 2025
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Rover Inc. logo
Full-time|Hybrid|Barcelona

About Us:Are you ready to make a difference? Join our passionate team at Rover, where work meets play!At Rover, we believe that everyone should experience the unconditional love of a pet. Since our founding in 2011, we have dedicated ourselves to connecting pet parents with caring pet sitters and dog walkers through our innovative app and website. Our platform spans neighborhoods across the US, Canada, and Europe, empowering a community of trusted pet care professionals to build their own businesses with the support of a global organization.Headquartered in Seattle, Washington, we collaborate closely with our vibrant teams in Barcelona, San Antonio, Spokane, and remote locations. Recognized as one of the best places to work, Rover has earned accolades from Seattle Business Magazine and Puget Sound Business Journal. As a fast-growing, agile company, our leadership team is comprised of veterans from some of the world's most esteemed tech companies.At Rover, pets are valued as much as our human team members. We strive to enhance the joys of pet ownership while nurturing a diverse, inclusive, and welcoming environment for our employees.This is a full-time, permanent, hybrid role (Mondays & Thursdays in our office at Poblenou, Barcelona).Software Engineer PositionAre you a dedicated and detail-oriented Software Engineer eager to leverage your technical expertise to develop customer-centric products that enhance the lives of pet owners? We are seeking an enthusiastic engineer to join our Barcelona team.In this role, you will be a vital contributor to our platform, working alongside cross-functional teams to solve complex technical problems and deliver robust, scalable solutions. If you are passionate about honing your craft and contributing to a supportive community, we would love to hear from you!

Oct 9, 2025
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Perk logo
Full-time|On-site|Barcelona

About UsPerk, formerly known as TravelPerk, is a cutting-edge platform dedicated to revolutionizing travel and spend management. We streamline cumbersome manual tasks, providing automated solutions for travel bookings, expense management, invoice processing, and beyond. Our mission is to eliminate inefficiencies, helping businesses reclaim valuable time and boost employee morale while fostering innovation.Trusted by over 10,000 companies worldwide, including industry leaders like Wise, On Running, Breitling, and Fabletics, we are addressing the staggering issue of lost productivity—estimated at $1.7 trillion—by tackling the 7 hours of wasted time each employee faces weekly. Established in 2015, Perk has rapidly expanded to a global workforce of more than 1,800 individuals across 12 offices, with headquarters located in London and Boston. We blend innovation, control, and simplicity to transform workplace dynamics and improve employee experiences.Our values drive us—ownership, a commitment to delivering a 7-star experience, and teamwork are at our core. We prioritize curiosity, purpose, and a growth mindset over mere knowledge, ensuring our team members reach their full potential. Our talent pool comprises top professionals from the travel and SaaS sectors, representing over 70 countries. If you're passionate about making a real difference and enhancing the work experience for millions, we want you on our team.Explore more about us at www.perk.com.

Dec 22, 2022
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Veeva Systems logo
Full-time|Hybrid|Spain - Barcelona

Join Veeva Systems, a trailblazer in the industry cloud, on our mission to accelerate the delivery of therapies to patients. As one of the fastest-growing SaaS companies, we achieved over $3 billion in revenue last year, with significant growth opportunities ahead. At Veeva, our core values include Doing the Right Thing, Ensuring Customer Success, Promoting Employee Success, and Emphasizing Speed. In 2021, we became a public benefit corporation, committed to balancing the interests of our customers, employees, society, and investors. As a Work Anywhere company, we empower you to choose whether to work from home or in the office, enabling you to thrive in your preferred environment. Join us in transforming the life sciences sector, and making a positive difference for our customers, employees, and communities.The Role Are you excited about creating impactful products in a greenfield environment? We aim to develop a data stewardship platform to enhance OpenData's data curation workflows, allowing Product Managers and over 1,000 data stewards globally to meet their data coverage and quality objectives. As a Full Stack Software Engineer, you will work alongside a talented team of engineers to design and implement features from concept to deployment. You will thrive in an agile environment, making a direct impact on users in a rapidly expanding, market-leading life sciences organization.

Sep 20, 2024
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Delivery Hero SE logo
Full-time|On-site|Barcelona

We are seeking a talented and experienced Staff Software Engineer (Backend) to join our dynamic team in the fast-paced world of quick commerce. As a vital member of our engineering team, you will be responsible for designing, developing, and maintaining backend services that power our innovative delivery solutions.Your expertise will contribute to enhancing our platform's performance, scalability, and reliability, ensuring we deliver exceptional service to our customers.

Mar 27, 2026
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Veeva Systems Inc. logo
Full-time|Remote|Spain - Barcelona

Veeva Systems is a purpose-driven leader in industry cloud solutions, dedicated to accelerating the delivery of therapies to patients across the globe. As one of the fastest-growing SaaS companies ever, we achieved over $3B in revenue last year, with significant growth opportunities ahead. Our core values are at the heart of everything we do: Integrity, Customer Success, Employee Success, and Speed. We made history in 2021 by becoming a public benefit corporation (PBC), which means we are legally committed to balancing the needs of our customers, employees, society, and investors. As a Work Anywhere company, we empower you to choose whether to work from home or from the office, allowing you to thrive in an environment that suits you best. Join us in transforming the life sciences industry, making a meaningful impact for our customers, employees, and communities.The Role As part of Veeva OpenData Commercial, which provides healthcare reference data globally, you will play a pivotal role in enhancing commercial sales execution, compliance, and business analytics. Within our Engineering team, you will implement significant changes and contribute to building a robust global data core for life sciences across over 100 countries. This position is ideal for a software engineer eager to learn, innovate, and tackle complex challenges. If technology excites you, you will find a welcoming home within our team, which is dedicated to maintaining a world-class engineering culture centered on integrity and our commitment to serving our customers effectively.

Oct 6, 2025
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Okta, Inc. logo
Full-time|On-site|Barcelona, Spain

Discover OktaOkta is the leading Identity Company globally, empowering individuals to securely utilize any technology across various devices and applications. Our adaptable and impartial solutions, including the Okta Platform and Auth0 Platform, ensure secure access, authentication, and automation, placing identity at the forefront of business security and growth.We embrace diverse perspectives and experiences at Okta. We seek lifelong learners who can enhance our team with their unique insights. Join us in shaping a world where Identity is yours to control.About the ProductOkta’s Auth0 offers an intuitive authentication and authorization platform crafted by developers, for developers. We facilitate safe and seamless access to applications, managing over 100 million daily logins worldwide. Our innovative approach to identity empowers this Tier-Ø global service to provide convenience, privacy, and security, enabling customers to focus on innovation.Meet the TeamThe Organizations team is expanding Auth0 to enable B2B SaaS applications to efficiently manage access for their customers and partners at scale. We ensure enterprise SaaS users can log in with appropriate permissions and contexts, simplifying the onboarding process for our B2B customers. Our work is always centered on customer needs and crosses various domains.Our technology stack includes NodeJS (JavaScript and TypeScript) and PostgreSQL for data management. Our services are hosted on AWS and Azure, with a strong reliance on containers for both development and production environments.If you possess a sharp eye for exceptional user experiences and enjoy tackling complex problems at scale, we are eager to connect with you.

Feb 13, 2026
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Speechify logo
Full-time|On-site|Barcelona, Spain

Role overview Speechify is seeking a Software Engineer specializing in Data Infrastructure and Acquisition to join the team in Barcelona, Spain. This position focuses on enhancing and expanding the data systems that support Speechify’s text-to-speech products. What you will do Develop and maintain scalable data pipelines that enable product features and analytics. Work closely with engineering, product, and data teams to ensure infrastructure aligns with business goals. Improve data storage solutions to boost reliability and performance. Protect data integrity throughout all stages of data management. The team Engineers at Speechify collaborate to advance AI-driven accessibility. The group values practical approaches and teamwork to deliver technology that makes a difference.

Apr 25, 2026
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AST SpaceMobile logo
Full-time|On-site|Barcelona, Spain

AST SpaceMobile is pioneering the development of the world's first global cellular broadband network in space, designed to operate seamlessly with standard mobile devices. Leveraging our extensive intellectual property and patent portfolio, this revolutionary technology is aimed at both commercial and governmental applications. Our dedicated engineers and space scientists are on a mission to bridge the connectivity gaps experienced by five billion mobile subscribers, ultimately providing broadband access to billions more who remain unconnected. Position OverviewWe are looking for a skilled Embedded Software Engineer to join our team, responsible for developing and maintaining embedded software solutions. You will work with microcontrollers, real-time operating systems (RTOS), and data-driven tools to support testing, validation, and production systems.Key Responsibilities:• Design and maintain software for our innovative devices.• Program ARM microcontrollers using C/C++ within RTOS environments.• Create effective testing tools and test benches utilizing Python.• Analyze and process test data and outcomes for validation purposes.• Develop reporting systems, real-time visualizations, and dashboards.• Integrate software with production management tools and systems.• Implement and manage various communication protocols including RF, Ethernet, USB, SPI, I2C, and UART.• Engage in code reviews to uphold software quality standards.• Maintain technical documentation and manage version control using Git/GitLab, including submodules and collaborative workflows.• Contribute to the ongoing enhancement of team processes and methodologies.QualificationsEducation:Bachelor’s degree in Electronic Engineering, Computer Engineering, Telecommunications, or a related discipline.Experience:• Proven experience in embedded software development for microcontrollers and RTOS environments.• Proficient in C/C++ programming.• Experience in developing tools and scripts using Python.• Skilled in data processing and analysis.• Familiarity with developing visualization, reporting, or dashboard tools.• Experience with Git/GitLab and collaborative development workflows.Preferred Qualifications:• Knowledge of FPGA development and related technologies.• Interest or experience in Artificial Intelligence and Machine Learning, particularly in data analysis, anomaly detection, and models utilizing PyTorch or TensorFlow.Soft Skills:Ability to work collaboratively in a team environment, with strong problem-solving skills and a proactive approach to challenges.

Apr 13, 2026
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Perk logo
Full-time|On-site|Barcelona

About UsPerk (formerly TravelPerk) is the leading intelligent platform dedicated to travel and spend management. Designed to alleviate the burdensome, manual tasks that hinder productivity, our innovative tools automate everything from travel bookings to expense management, invoice processing, and beyond. By eradicating the shadow work that squanders valuable hours, diminishes morale, and stifles creativity, we aim to empower genuine work that makes a tangible difference.With the trust of over 10,000 companies globally, including industry leaders such as Wise, On Running, Breitling, and Fabletics, we are committed to addressing the 7 hours of lost productivity per employee each week, which amounts to a staggering $1.7 trillion challenge.Founded in 2015, Perk has expanded into a vibrant global entity with over 1,800 employees across 12 offices, including our headquarters in London and Boston. We blend innovation, control, and simplicity to revolutionize how businesses operate and enhance workplace satisfaction.At Perk, our core values drive us—embracing ownership, delivering a 7-star experience, and collaborating as one unified team. We prioritize curiosity, purpose, and mindset over mere knowledge to unleash your full potential. Our talent team is a mosaic of prominent professionals from the travel and SaaS sectors, representing over 70 countries. If you're passionate about creating a real impact and redefining how millions experience work, we would be thrilled to welcome you to our team.Learn more about us at www.perk.com.The Platform team at Perk lays the groundwork that the rest of the company relies on. We oversee shared infrastructure, core services, and developer tools that enable product teams to innovate swiftly without compromising quality. Although our work often occurs behind the scenes, its effects are ubiquitous—enhancing reliability, scalability, security, and the overall developer experience.We tackle complex, systemic challenges, make informed trade-offs, and hold ourselves accountable for the platform's long-term health. If you value leverage, clean abstractions, and building robust systems, we want to hear from you!

Feb 11, 2026
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Prosper AI logo
Full-time|On-site|Barcelona

About Prosper AIProsper AI is at the forefront of innovation, specializing in AI Phone Agents designed for the healthcare sector. Our mission is to deliver human-like expertise while dramatically reducing operational costs. Our AI Agents efficiently manage a variety of tasks such as patient outreach, claims status inquiries, benefit verifications, prior authorizations, scheduling, and balance reminders. We are dedicated to eliminating $200 billion in administrative waste, enabling healthcare professionals to devote more time to patient care instead of administrative duties.Your RoleJoin us at Prosper as we redefine the capabilities of real-time AI technology. As a Software Engineer, your primary focus will be on designing and scaling our robust platform, including low-latency speech and LLM pipelines, orchestration layers, and reliability systems that empower our AI voice agents to engage in complex healthcare conversations with clarity and efficiency. This position is a full-time, on-site opportunity based in Barcelona with the potential for relocation to our New York office.Qualifications1-3 years of hands-on experience in developing end-to-end software solutions, from architecture to deployment.Proficiency in technologies that drive our stack, particularly FastAPI (Python) for backend development and React (TypeScript) for frontend.Experience in managing large-scale distributed systems with asynchronous workload orchestration.Familiarity with LLMs, AI agents, or other machine learning models is advantageous; we utilize Pipecat for our voice agents.A founder mindset: take ownership and work diligently, viewing Prosper as a stepping stone to your future entrepreneurial endeavors.Prepared to tackle the complexities of deploying AI voice agents for thousands of daily calls.Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, Physics, or a related field (or equivalent experience).Interview ProcessInitial conversation to discuss your background, aspirations, and career goals (30 minutes).Completion of a take-home challenge to be reviewed in the subsequent interview.Discussion of your solution with our engineering team to evaluate your approach and thought process.

Feb 28, 2026
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Okta, Inc. logo
On-site|On-site|Barcelona, Spain

Discover OktaAt Okta, we are redefining identity management as The World’s Identity Company. Our mission is to empower individuals to securely access any technology, from anywhere, on any device or application. Our innovative solutions, including the Okta and Auth0 platforms, provide robust access management, authentication, and automation, placing identity at the forefront of business security and growth.We embrace diverse perspectives and experiences, and we’re not just looking for candidates who fit a specific mold; we seek lifelong learners who can enrich our team with their unique backgrounds and insights.Join us in our vision of a world where identity is truly yours.As a Senior Site Reliability Engineer (SRE) at Auth0, you will play a pivotal role in delivering an unmatched authentication experience to millions of users worldwide. Our commitment to reliability is fundamental to our product, and your expertise will be crucial in enhancing the availability and resilience of our systems. You will be part of our European SRE team, ensuring that our production environments are not only operational but also scalable and prepared for rapid growth. This role goes beyond maintaining systems; it’s about designing solutions that fundamentally improve our platform's resilience and performance.

Jan 28, 2026
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SumUp logo
Full-time|On-site|Barcelona, Barcelona, Spain

About SumUp At SumUp, we champion the everyday hero—the small business owner. Our mission is to empower these individuals by providing innovative tools that simplify the management of their businesses. With a founder’s mindset and a commitment to teamwork, our diverse teams across Europe, South America, and the United States collaborate to help our partners succeed in their passions. Team Description The Lending team is dedicated to delivering a fair, straightforward, and timely lending experience for small merchants. We enable small business owners to take control of their financing, whether they are looking to fund growth, manage cash flow, or cover operational expenses. Our goal is to ensure that capital is accessible to our merchants and consumers at all times. We are on the lookout for talented Engineers to enhance and maintain the backend of a crucial aspect of our lending operations: Dunning & Collection. This process involves engaging with our merchants, developing repayment plans, and offering alternative payment solutions to help our customers meet their financial commitments to SumUp. Your responsibilities will include designing, implementing, and testing new features, as well as optimizing the performance and scalability of our existing systems. What You’ll Do Enhance the functionality and user experience of SumUp’s lending platform to meet the diverse needs of our merchants. Design and build new microservices for various use cases in the Dunning & Collection journey, taking into account market-specific nuances. Optimize system performance and scalability. Develop integrations with external partners to fuel growth. Contribute to building a high-performing engineering team. You’ll Be Great for This Role If 1-3 years of experience as a Software Engineer. Proficiency in Golang or other object-oriented programming languages such as Java, Kotlin, or Python. Experience in creating and maintaining simple components in React. Familiarity with RESTful API design and development. Proficient in Git and Git workflows. Experience with SQL and NoSQL databases, including PostgreSQL. It Would Be a Plus If You Have Strong English communication skills for effective collaboration.

Apr 10, 2026
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Vonage logo
Full-time|Remote|Barcelona, Spain (Reemote- Spain)

Join our dynamic team at Vonage as a Software Engineer specializing in Java and Kotlin. You will be responsible for designing, developing, and maintaining robust software applications that enhance our communication services. We are looking for innovative thinkers who are passionate about technology and eager to contribute to cutting-edge projects.

Apr 7, 2026
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Emburse logo
Full-time|On-site|Barcelona

About EmburseAt Emburse, our mission is to enhance the lives of our users and their businesses. We are revolutionizing how organizations handle corporate expenses and invoices, making work more human through the automation of tedious tasks. This allows our users to focus on what truly matters, whether it be their families, communities, or more fulfilling work. We empower CFOs to provide their teams with an exceptional experience while ensuring compliance and cost reduction. Our solutions cater to organizations of all sizes, from startups and SMBs to large enterprises like Microsoft, Pinterest, Bosch, the Bill & Melinda Gates Foundation, and Estée Lauder. With over 18,000 customers and 12 million users globally, we are making a significant impact.We are looking for a meticulous and talented Software Development Engineer in Test (SDET) to join our engineering team. In this pivotal role, you will serve as a vital link between software development and quality assurance. You will be responsible for designing and implementing robust automated testing frameworks that ensure the reliability, performance, and scalability of our applications. As an SDET, you will collaborate closely with developers, product managers, and QA engineers to create efficient testing solutions, promote continuous integration, and uphold a high standard of product quality across all releases.At Emburse, you’ll not just envision the future; you’ll actively build it. As a leader in travel and expense solutions, we are crafting a future where technology generates business value and inspires extraordinary outcomes.

Oct 14, 2025
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Thunes logo
Full-time|On-site|Barcelona, Barcelona, Spain

About Thunes Thunes is revolutionizing the way money moves across the globe. Our unique Direct Global Network enables Members to execute real-time payments in over 130 countries and across more than 80 currencies. With direct connections to over 7 billion mobile wallets and bank accounts worldwide, we facilitate transactions through 350+ payment methods, including GCash, M-Pesa, Airtel, MTN, Orange, JazzCash, Easypaisa, AliPay, WeChat Pay, and many others. Our network supports industry leaders in the gig economy such as Uber and Deliveroo, super-apps like Grab and WeChat, as well as MTOs, fintechs, PSPs, and banks. Thunes stands out with its extensive global reach, an innovative Smart Treasury Management Platform, and a robust Fortress Compliance Infrastructure, providing unparalleled speed, control, visibility, protection, and cost-effectiveness for real-time global payments. Headquartered in Singapore, we have a presence in 12 cities worldwide, including Barcelona, Beijing, Dubai, London, Manila, Nairobi, Paris, Riyadh, San Francisco, Sao Paulo, and Shanghai. For further details, please visit: https://www.thunes.com/ Role Overview As a Golang Software Engineer at Thunes, you will take charge of designing, developing, and maintaining high-quality software solutions within the Golang ecosystem. Your success will be measured by your ability to deliver efficient, scalable, and maintainable code while fostering collaboration with cross-functional teams. Reporting directly to the Lead Developer, you will play a pivotal role in shaping the technical trajectory of our projects and ensuring compliance with best coding practices. This role is integral to enhancing our technological capabilities and driving our business objectives through robust software development. Key Responsibilities: Develop, test, and deploy applications with a focus on performance and security. Contribute to the development of a new platform version using Golang. Work collaboratively with Product Owners, the Security and Infrastructure team, and the Data team to implement effective technical solutions. Conduct code reviews, providing constructive feedback to uphold best practices and code quality. Optimize application performance and scalability while addressing technical debt as necessary. Engage in Agile development processes, contributing to sprint planning, stand-ups, and retrospectives. Troubleshoot and resolve software issues to maintain system stability and reliability. Stay informed about emerging technologies and suggest enhancements to current solutions.

Oct 30, 2025
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dLocal logo
Full-time|On-site|Barcelona

Why join dLocal?At dLocal, we empower major global enterprises to facilitate payments across 40 emerging markets. Renowned brands depend on us for enhancing conversion rates and streamlining payment expansion seamlessly. As both a payments processor and a merchant of record in our operational regions, we enable our merchants to penetrate the world's most rapidly expanding markets.By becoming part of our team, you will join an extraordinary global workforce that drives this success. Working at dLocal means collaborating with over 1000 colleagues from more than 30 nationalities and forging an international career that influences millions of lives worldwide. We are innovative builders who embrace challenges and prioritize our customers. If this resonates with you, we believe you will thrive with us.We are seeking a talented Software Engineer to enhance our Merchant Experience team. In this pivotal role, you will be instrumental in designing and implementing architectural systems that underpin our existing and forthcoming Java applications. Your collaboration with the development team will focus on ensuring solutions are efficient, scalable, and meet client specifications. To excel in this role, you should have a deep understanding of software and architectural design patterns, coupled with advanced Java programming expertise. Your contributions will be essential in continuously advancing our technology stack and shaping the future of our department. A strategic mindset and the ability to grasp the broader picture will be crucial for your success in this dynamic environment.

Mar 16, 2026

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