Senior Fullstack Engineer

Wizeline delivers AI-native technology solutions and builds digital products and platforms for clients worldwide. The company focuses on using data and AI to help organizations launch products faster and drive meaningful change. Collaboration, growth, and making a real impact are central values here. Role overview This Fullstack Software Engineer position is based in Barcelona. The role centers on designing and developing digital products that use AI and data to solve real business problems. Working closely with clients and team members, you will contribute to projects that aim to accelerate time to market and support business transformation. What you will do Build and maintain fullstack applications as part of a collaborative team Work with AI-driven technologies to create innovative solutions Contribute ideas and expertise to deliver high-quality digital products What we value Curiosity and a drive for growth Openness to collaboration and teamwork A focus on making a positive impact through technology

Wizeline is a global digital services company that works with clients ranging from mid-size businesses to Fortune 500 enterprises. The team focuses on building and improving digital products and services, helping organizations strengthen their digital capabilities and modernize their core technology. Role overview This Senior Fullstack Software Engineer position is based in Barcelona. The role centers on solving complex technical challenges for clients, with an emphasis on human-centered digital experiences and integrating intelligence such as AI, machine learning, and data-driven solutions. Who we’re looking for Wizeline seeks candidates who are passionate about technology and eager to take on new challenges. A strong interest in developing digital solutions and working on innovative projects is important for this role.

About Us:At Wizeline, we are a leading global provider of AI-driven technology solutions, crafting innovative digital products and platforms that harness the power of data and artificial intelligence. Our mission is to empower businesses through transformative technology, enabling them to accelerate their market entry and achieve significant growth. We pride ourselves on our collaborative culture, where creativity and innovation thrive among a community of professionals dedicated to making a meaningful impact.With the right talent and visionary ideas, we believe that there are no limits to what we can accomplish together.Are You the Right Candidate?Excited about the opportunity? Let’s ensure you meet the qualifications we’re looking for:

About WizelineWizeline is a leading global provider of digital services dedicated to assisting mid-sized and Fortune 500 companies in creating, scaling, and delivering outstanding digital products and services. Our mission is to tackle our clients' challenges through innovative, human-centered design, digital core modernization, and the integration of intelligence (AI/ML and data) into every facet of their operations. We empower organizations to establish digital capabilities that place technology at the heart of their business strategies. Position OverviewAre you passionate about critiquing web and mobile applications? Does poor design frustrate you? Imagine the opportunity to craft intuitive, user-friendly, and engaging products that resonate with users and elevate their experiences. Join us in redefining customer interactions in the energy sector.As a Senior Product Designer, you will collaborate with cross-functional teams under the mentorship of the Director of UX Design. Your role will involve tackling diverse projects that require you to devise innovative solutions for complex usability and information presentation challenges—no standard solutions here!

About Us:Wizeline is a leading AI-native technology solutions provider dedicated to developing innovative, AI-driven digital products and platforms. We collaborate with clients to harness the power of data and AI, expediting their market entry while facilitating transformative business changes. As a diverse community of innovators, we cultivate a culture centered on growth, collaboration, and impact.Join us and discover what we can achieve together!Are You the Right Fit?Excited about the opportunity? Let’s ensure you align with the role:Key Responsibilities:Engage in meetings with the experimentation team to align on objectives.Analyze, develop, and follow up on requirements to ensure project success.Develop A/B tests for our web platforms to enhance user experience.Conduct thorough reviews of experiments through unit testing and manual testing.Collaborate with cross-functional teams to define requirements and request adjustments to applications.Work closely with UI/UX designers to implement effective designs.Manage code repositories to ensure version control and documentation.Participate in code and peer reviews to uphold quality standards.

Join Us as a Senior UX Designer Barcelona, Spain | Hybrid (3 days onsite / 2 days remote)About WizelineWizeline is a leading global provider of AI-native technology solutions, crafting innovative, AI-driven digital products and platforms. We collaborate with clients to harness data and AI, accelerating their market presence and facilitating transformative business changes. As a collective of innovators, we nurture a culture defined by growth, collaboration, and impactful results.With the right individuals and ideas, our potential is limitless.Are You the Right Fit?Excited about this opportunity? Let's ensure you're the perfect match for our team.We are in search of a Senior UX Designer who excels at creating thoughtful, user-centric experiences, while adeptly balancing product objectives and real-world limitations. In this role, you will design comprehensive user experiences, work alongside cross-functional teams, and apply structured design thinking to solve complex challenges.Your collaboration with product managers, engineers, marketing teams, and researchers will be crucial in transforming business and user needs into seamless digital experiences. The ideal candidate will possess robust UX fundamentals, systems thinking abilities, and outstanding communication skills to effectively convey the rationale behind design decisions.Key ResponsibilitiesDesign engaging user experiences that are intuitive and effective.Collaborate with cross-functional teams to understand user needs and translate them into design solutions.Conduct user research and usability testing to inform design decisions.Iterate on designs based on user feedback and performance metrics.Present design concepts and solutions to stakeholders.

Senior Staff React Engineer with TypeScript and AI ExpertiseAbout Us:Wizeline is a leading global technology solutions provider, specializing in AI-driven digital products and platforms. We collaborate with our clients to harness the power of data and artificial intelligence, streamlining market entry and catalyzing transformative business outcomes. As a vibrant community of innovators, we prioritize growth, collaboration, and meaningful impact.With the right talent and innovative ideas, we believe there are no limits to what we can accomplish.Are You the Right Fit?If this opportunity excites you, let's determine if you're the right candidate for this position: Key ResponsibilitiesGuide the architecture, design, and development of scalable, high-performance web applications using React and TypeScript.Formulate and implement the front-end technical strategy, ensuring it meets scalability, performance, and alignment with product and AI objectives.Engage closely with AI engineers, data scientists, designers, and product managers to craft intelligent, data-centric user experiences.Incorporate AI-powered components (e.g., chatbots, assistants, content generators, predictive UI) into contemporary web applications.Mentor fellow engineers, fostering excellence in coding practices, architectural decisions, and technical problem-solving.Establish and uphold standards for code quality, accessibility, performance optimization, and testing.Collaborate with backend and DevOps teams to enhance CI/CD pipelines and deployment processes.Continuously seek opportunities to integrate AI and automation to improve development workflows and user experiences. Essential Qualifications8+ years of professional software development experience, including at least 5+ years focused on React and TypeScript.Demonstrated experience in architecting and scaling enterprise-grade front-end applications.Knowledge of integrating AI technologies into web applications.

Are you a passionate Fullstack Engineer ready to take on exciting challenges? Join Scopely, a leading interactive entertainment company, where you'll work on innovative gaming projects that captivate millions of players worldwide.As a Fullstack Engineer, you will design and develop robust web applications, ensuring a seamless user experience. Collaborate with cross-functional teams, contribute to architectural decisions, and implement best practices in coding and testing.

Join Our Team as a .NET DeveloperAbout Us:Wizeline is a leading global provider of AI-native technology solutions, dedicated to developing state-of-the-art, AI-driven digital products and platforms. We collaborate with clients to harness the power of data and AI, expediting market entry and fostering transformative business growth. As a vibrant community of innovators, we emphasize a culture of development, teamwork, and significant impact.With the right talent and innovative ideas, the possibilities are limitless.Are You the Right Fit?If this sounds exciting, let’s ensure you align perfectly with our needs:Key ResponsibilitiesDesign, develop, and implement innovative features and functionalities for a banking platform utilizing .NET Core.Craft clean, scalable, and well-documented code ensuring maintainability.Collaborate effectively with cross-functional teams, developers, and product owners to provide optimal solutions.Engage in code reviews to uphold high-quality coding standards.Diagnose and resolve issues reported by customers or internal teams promptly.Propose and contribute to the continuous enhancement of our development processes.Stay informed about the latest .NET Core technologies, cloud trends, and best practices.

Join our dynamic team as a Fullstack Engineer specializing in Java and Angular. In this role, you will be responsible for designing and implementing robust software solutions that enhance user experiences and meet our clients' needs. Collaborate with cross-functional teams to drive innovation and ensure the successful delivery of projects.

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.

About the Role Affinity is hiring a Senior Software Engineer in Barcelona. This position focuses on designing, building, and maintaining software products that support the company's goals. The team values engineers who enjoy solving complex problems and contributing to ongoing projects.

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!

About UsPerk Technologies, Inc. (formerly TravelPerk) is revolutionizing the landscape of travel and spend management with our cutting-edge platform. Our mission is to eliminate the tedious, manual tasks that hinder productivity, allowing businesses to focus on what truly matters. We automate processes related to travel bookings, expense management, invoice processing, and much more. By addressing the significant issue of shadow work that leads to lost hours and diminished morale, we empower employees to achieve their best work.Trusted by over 10,000 organizations globally, including industry leaders such as Wise, On Running, Breitling, and Fabletics, we are addressing a staggering productivity loss of 7 hours per employee each week, representing a $1.7 trillion challenge.Founded in 2015, Perk has rapidly expanded into a global entity with more than 1,800 employees distributed across 12 offices worldwide, with headquarters in London and Boston. We prioritize innovation, control, and simplicity to transform the working experience for businesses and their employees.At Perk, our values drive us. We believe in ownership, delivering a 7-star experience, and collaborating as one team. Our focus is on curiosity, purpose, and mindset, rather than just knowledge, to unlock your full potential. Our talent team is composed of top professionals from the travel and SaaS sectors, representing over 70 nationalities. If you are passionate about making a real impact and redefining how millions experience work, we would love to welcome you to our team.Visit www.perk.com to learn more.

About G2 - The CompanyG2 stands as the largest and most reputable software marketplace globally. By joining G2, you become a part of a leading team dedicated to empowering businesses with reliable insights and strategies derived from real software users, helping them to maximize their potential.In an exciting development, we have collaborated with Capterra, SoftwareAdvice, and GetApp to create a comprehensive online resource for software data and insights. With over 200 million annual visitors and 6 million verified reviews, we have established ourselves as the go-to platform for software buyers, enabling them to make informed and swift decisions.We're just beginning our journey! Our mission is to revolutionize the global B2B software landscape and establish a trusted data foundation for both software buyers and sellers in the AI era.Are you excited? Join us as we strive to reach our next peak!About G2 - Our PeopleAt G2, our identity and actions are rooted in our PEAK values— (Performance + Entrepreneurship + Authenticity + Kindness). Being part of G2 means engaging with a value-driven, global community that climbs peaks together. We celebrate each other's victories, learn from setbacks, and provide support during challenging times. Our ambition and entrepreneurial spirit encourage us to tackle challenging projects that foster growth and learning.You will join a diverse, global team of intelligent, dedicated, and kind individuals, each with unique talents and aspirations. Central to our culture are our people-led ERGs, which celebrate the diverse identities within our team. We are committed to our DEI and philanthropic initiatives (such as our G2 Gives program), which inspire us to become better individuals.

Join cint as a Senior Software Engineer and play a vital role in shaping the future of our technology. In this dynamic position, you will be responsible for designing, developing, and maintaining high-performance software systems that enhance our products and services.We are looking for a passionate individual with a strong foundation in software engineering principles who is eager to collaborate within a team-oriented environment. Your contributions will directly impact our innovative solutions and drive the success of our company.

About Us: At Emburse, we don’t just envision the future—we actively create it. As a frontrunner in travel and expense management solutions, we are dedicated to harnessing the power of technology to deliver exceptional business value and inspire remarkable outcomes. Our AI-driven platform empowers organizations to modernize their financial operations, enhance visibility, and optimize expenditures across the entire enterprise.We are seeking a dedicated and skilled software engineer to join our dynamic team at Emburse. In this senior role, you will play a pivotal part in developing a cohesive and interactive suite of system solutions. Collaborating within an agile development team, you will be responsible for building and refining features of our Enterprise product.

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.

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.