Senior Backend Engineer – AI Agents at seQura | Barcelona

About seQuraseQura is at the forefront of fintech innovation, delivering flexible and user-friendly payment technologies that enhance merchants' ability to attract, convert, and retain customers. We are committed to improving sales performance by customizing solutions across various sectors including Retail, Education, Eyewear, Repairs, and Travel, addressin…

About seQuraseQura is a pioneering fintech company headquartered in Barcelona, specializing in innovative payment solutions that empower merchants to enhance customer acquisition, conversion, and retention.Our tailored payment technologies address unique challenges across various sectors, including Retail, Education, Eyewear, Repairs, and Travel, enabling consumers to enjoy greater value, flexibility, and convenience in their shopping experiences through options like interest-free credit and installment payments of up to 24 months.Currently in a robust scale-up phase, seQura is expanding rapidly across southern Europe and Latin America, boasting a remarkable growth rate exceeding 50% CAGR and nearing €100 million in Annual Recurring Revenue. With over 5,000 business partners and nearly 3 million satisfied shoppers, our team of over 350 employees has earned the reputation of being one of the most loved and trusted fintechs, as evidenced by our NPS of 87%, Trustpilot rating of 4.7/5, and Glassdoor rating of 4.7/5.About the Role EduQa, one of seQura’s strategic verticals, is experiencing significant growth as it transitions from a specialized Buy Now Pay Later (BNPL) solution for education into a comprehensive Platform-as-a-Service (PaaS) model, enabling educational institutions to finance their students and expand their operations globally.As we broaden our scope of projects, integrations, and market reach, we are seeking a Senior Product Manager to lead initiatives within the EduQa ecosystem, accelerate product development, and ensure alignment with both EduQa’s strategic vision and seQura’s overarching priorities.At seQura, our Product Managers are recognized as product leaders rather than mere backlog owners. You will play a crucial role in ensuring we are building the right solutions for the right reasons, connecting user needs with business objectives, overseeing the complete product lifecycle, and focusing on delivering impactful outcomes rather than just outputs.

About seQuraseQura is a pioneering fintech company based in Barcelona, dedicated to providing innovative, flexible, and user-friendly payment technologies that empower merchants in acquiring, converting, and retaining customers.Our tailored solutions address the unique challenges faced by various sectors including Retail, Education, Eyewear, Repairs, and Travel, significantly enhancing sales performance.We also enable consumers to enjoy smart shopping experiences that deliver value, convenience, and flexibility through new payment options, allowing them to save, access interest-free credit, or pay in manageable installments of up to 24 months.As a privately owned fintech, seQura is rapidly expanding across southern Europe and Latin America, boasting impressive growth rates of over 50% CAGR. Our reputation as one of the most trusted fintechs is reflected in our NPS of 87%, a Trustpilot rating of 4.7/5, and a Glassdoor rating of 4.1/5, supported by over 6000 businesses and nearly 3 million shoppers.About the Role In the capacity of our Senior Graphic Designer, you will play a pivotal role in shaping seQura’s visual identity and driving growth through data-driven design. Your responsibilities will include crafting a wide range of brand assets and performance advertisements that effectively convey complex fintech concepts into clear and engaging visuals. Collaborating closely with our Creative Director, Growth, and Product teams, you will ensure the delivery of cohesive experiences throughout the entire customer journey.

About seQuraseQura is at the forefront of innovation, delivering flexible and user-friendly payment technologies that empower merchants to enhance customer acquisition, conversion, and retention.We significantly improve sales performance by customizing our solutions to address the unique challenges faced by various sectors, including Retail, Education, Eyewear, Repairs, and Travel. Our offerings not only support merchants but also enrich consumers' shopping experiences by providing value, convenience, and flexibility through new payment methods—allowing access to interest-free credit and the option to pay in manageable installments of up to 24 months.Founded in Barcelona, seQura is a rapidly growing fintech company, currently in the scale-up phase with a presence in Southern Europe and Latin America. With a growth rate exceeding 50% CAGR, we are nearing 100 million in Annual Recurring Revenue, serving over 5,000 businesses and nearly 3 million shoppers. Our commitment to excellence is reflected in our employee satisfaction, boasting an NPS of 87%, a Trustpilot rating of 4.7/5, and a Glassdoor rating of 4.7/5.About the RoleAs a Senior Product Manager at seQura, you will be a product leader, not merely a backlog administrator. You will take the reins on deciding what we build and why, adeptly linking real user problems with business goals and technical capabilities to deliver impactful solutions.Your role will involve shaping a product platform that spans multiple verticals, geographies, and brands. This requires a strategic mindset to think broadly about the platform while being detail-oriented when necessary. If you are eager to take ownership of significant challenges, collaborate with a talented cross-functional team, and play a pivotal role in defining our product platform, we would love to hear from you.At seQura, we seek exceptional product experts ready to take charge of critical product areas within a dynamic, multi-vertical fintech environment.

About seQuraseQura is at the forefront of innovative payment solutions, enabling merchants to enhance customer acquisition, conversion, and retention seamlessly.Our tailored solutions cater to diverse sectors including Retail, Education, Optics, and Travel, making significant strides in sales performance. We empower consumers with smart shopping options that offer value, convenience, and flexibility, providing new payment experiences that enable savings, access to interest-free credit, and manageable installment plans of up to 24 months.Founded in the vibrant city of Barcelona, seQura is a privately-owned fintech in a dynamic scale-up phase. With a presence in Southern Europe and Latin America, we are experiencing remarkable growth, achieving over 50% CAGR and exceeding 100 million in Annual Recurring Revenue. Our reputation is bolstered by the trust of over 5,000 businesses and 2 million shoppers, with an impressive NPS of 87%, a Trustpilot rating of 4.5/5, and a Glassdoor rating of 4.3/5.About the Role We are seeking a seasoned Senior Data Platform Engineer to join our Data Platform team, where you will play a critical role in scaling seQura’s data ecosystem through innovative automation, robust platform capabilities, and intuitive self-service tooling.Your primary mission will be to advance our Data Platform as a Product, empowering software engineers, analysts, data scientists, and business teams to harness data effectively throughout its lifecycle—from ingestion to discovery—while embedding security, governance, and reliability into the platform by default. You will enable teams across the organization to access trusted data and make informed, data-driven decisions.This position extends beyond merely constructing data pipelines; you will be responsible for designing the guardrails, abstractions, and platform capabilities that facilitate other teams in building and scaling their own data products safely and efficiently.You will thrive in our cloud-native AWS environment, where Infrastructure as Code, observability, and automation are foundational engineering principles.Challenges You'll Tackle ...

About seQuraseQura is at the forefront of developing innovative, flexible, and user-friendly payment technologies that empower merchants to acquire, convert, and retain customers more effectively.We enhance sales performance by customizing our solutions to address the unique challenges across various sectors such as Retail, Education, Eyewear, Repairs, and Travel, delivering exceptional results.We also enhance consumer shopping experiences by offering greater value, convenience, and flexibility through innovative payment options, allowing users to save, access interest-free credit, or pay in manageable installments over 24 months.Founded in Barcelona, seQura is a rapidly expanding fintech company with a growth rate exceeding 50% CAGR across Southern Europe and Latin America. With over 6000 businesses, nearly 3 million shoppers, and a dedicated team of around 400 employees, we are proud to be among the most trusted fintechs, boasting an impressive NPS of 87%, a Trustpilot score of 4.7/5, and a Glassdoor rating of 4.1/5.About the Role In this pivotal role reporting to the Strategic Finance Lead, you will collaborate closely with the Head of Education and their senior leadership team to co-manage seQura’s financial integrity, performance intelligence, and strategic decision support. Your efforts will be crucial in driving revenue growth, optimizing unit economics, enhancing cost efficiency, managing working capital, and modeling headcount to ensure profitable returns on growth initiatives. You will provide real-time accuracy, performance clarity, and actionable insights for company leaders and business partners.

About seQuraseQura is a pioneering fintech company headquartered in Barcelona, dedicated to revolutionizing payment technologies. Our innovative, flexible, and user-friendly solutions empower merchants to acquire, convert, and retain more customers. By customizing our offerings to various sectors such as Retail, Education, Eyewear, Repairs, and Travel, we effectively tackle unique challenges, driving outstanding sales performance.We enhance the shopping experience for consumers seeking value, convenience, and flexibility through payment solutions that enable savings, interest-free credit, and manageable installment plans of up to 24 months. With impressive growth exceeding 50% CAGR, our trusted platform serves over 6000 businesses and nearly 3 million shoppers. Our team of approximately 400 employees has earned an NPS of 87%, a 4.7/5 rating on Trustpilot, and a 4.1/5 rating on Glassdoor, reflecting our commitment to excellence.About the Role As a Strategic Finance Analyst, you will play a vital role in upholding financial integrity, performance intelligence, and forward-looking decision support within our organization.

ANYbotics is an innovative and rapidly expanding technology company committed to revolutionizing the field of mobile robotics across diverse sectors. We invite you to join our dynamic and talented team of over 200 professionals, working on pioneering robotic technologies.The OpportunityWe are searching for a Senior Backend Engineer to become a vital member of our agile software engineering team. In this role, you will be responsible for architecting and developing the backend for the next generation of robotic applications for our flagship product, ANYmal. Collaborating closely with your teammates and leading robotics engineers, you will design and implement sophisticated software solutions that empower ANYmal to undertake increasingly complex tasks.The APIs developed by your team will lay the groundwork for strategic partnerships with software and cloud technology providers, facilitating seamless integration into our clients' facility management systems and enabling the creation of comprehensive robotic inspection solutions.At ANYbotics, we continually innovate to enhance the performance and capabilities of our robots, helping clients derive valuable insights from their facilities and processes with efficiency and ease. Leverage your technical expertise in web technologies to contribute to making our robots smarter, more reliable, and user-friendly.The Market & Our TechnologyANYbotics is at the forefront of transforming the industrial landscape by integrating robotics into a wide array of groundbreaking applications that were previously unattainable (refer to our case studies in sectors such as Chemicals, Oil & Gas, Railways, Wind Energy, Mining, and Construction). Our clientele consists of major asset operators and service providers in the industrial sector, pioneering the use of robotic technology for inspection and maintenance tasks. Our solutions facilitate autonomous routine inspections and monitoring of extensive industrial facilities, enhancing safety and productivity. We engineer a variety of customized hardware systems, including the complete robotic platform, actuators, sensors, inspection payloads, charging systems, and software, achieving exceptional mobility, autonomy, and inspection capabilities, often powered by AI. Our technology has been validated through long-term pilot projects, and we are now scaling our solutions for commercialization, deploying them directly in operations at client facilities across the globe.About UsANYbotics is a pioneering robotics firm specializing in advanced autonomous systems. Following a successful Series B funding round, we are poised for significant growth...

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 seQuraseQura is at the forefront of innovative payment solutions, offering cutting-edge, user-friendly technologies that enable merchants to enhance customer acquisition, conversion, and retention.Our tailored solutions cater to various sectors, addressing specific challenges and delivering outstanding results in Retail, Education, Eyewear, Repairs, and Travel.We empower consumers to engage in smart shopping by providing value, convenience, and flexibility through new payment experiences that enable savings, access to interest-free credit, or manageable installments of up to 24 months.Founded in Barcelona, seQura is a rapidly growing fintech company expanding across Southern Europe and Latin America, boasting over 50% CAGR. With a community of over 6,000 businesses and nearly 3 million shoppers, our commitment to excellence has earned us an NPS of 87%, a Trustpilot rating of 4.7/5, and a Glassdoor rating of 4.1/5.About the Role As a Product Marketing Manager - Education, you will play a pivotal role in shaping the future of seQura Education, a solution designed to enhance accessibility to learning opportunities.

airapps is hiring a Backend Engineer in Barcelona to help build and improve its applications. This position centers on developing backend systems that support new features and maintain reliability. What you will do Work closely with team members to design and implement backend solutions Contribute to the ongoing development and stability of airapps products Address technical challenges as they arise Who we’re looking for Experience building and maintaining backend systems Comfort working collaboratively in a team setting Motivated to solve problems and support product innovation This role is based in Barcelona and offers the chance to work alongside a group of dedicated engineers focused on building quality applications.

Join Delivery Hero as a Senior Backend Engineer specializing in Kotlin to drive innovation in the Quick Commerce sector. In this role, you will design and develop scalable backend systems that enhance our delivery capabilities. You will collaborate with cross-functional teams to deliver high-quality software solutions while ensuring optimal performance and reliability.We are looking for someone who is passionate about technology, thrives in a fast-paced environment, and is eager to take on new challenges. Your contributions will directly impact our mission to provide exceptional service to our customers.

Join Docplanner as a Backend Engineer specializing in AI Integration and play a vital role in revolutionizing the healthcare industry. We are looking for a talented professional with a strong background in backend development and a passion for artificial intelligence.In this position, you will collaborate with cross-functional teams to design, implement, and optimize backend solutions that effectively integrate AI technologies. With your expertise, you will help us enhance our platform's capabilities and improve user experience.

Join Our TeamAt Quadrivia, we are revolutionizing healthcare technology with Qu, a fully controllable and customizable AI assistant crafted by clinicians for clinicians. We tackle the pressing shortage of healthcare professionals by providing timely, personal, and dependable support for a variety of clinical tasks throughout the care continuum. Qu is tailored for healthcare providers, payers, and pharmaceutical companies, ensuring easy customization and seamless integration into existing workflows for optimal assistance across the care spectrum.Your ImpactAs a Senior Backend Software Engineer, you will architect and develop the robust backend systems that power the Quadrivia clinical AI platform. This includes building high-availability services, creating event-driven architectures, developing data pipelines, and establishing orchestration layers for our clinical AI agents.This position is highly technical and hands-on, playing a critical role in ensuring our systems' reliability, safety, and performance.

Join BioCatch, the leading innovator in Behavioral Biometrics, where we harness the power of machine learning to analyze users' behavioral patterns online to enhance security. Our mission is to enable a digital world where identity, trust, and ease can coexist. With over 32 of the world's top 100 banks and 210 financial institutions using our BioCatch Connect™ technology, we are at the forefront of combating fraud and fostering digital transformation. We collaborate with industry giants like American Express and Barclays through our Client Innovation Board to explore innovative methods for fraud prevention. With a decade of experience, over 80 registered patents, and a commitment to innovation, we are solving the challenges of tomorrow.Are you an adept backend developer eager to use your expertise to combat cybercrime? At BioCatch, we are searching for a Senior Backend Developer to become part of our passionate team driven by curiosity and innovation. In this role, you will engineer core services and APIs capable of managing high volumes of real-time data while adhering to strict SLA response times. Your work will involve tackling complex scenarios related to big data collection, aggregation, and analysis. Join us at BioCatch to make a significant impact in the fight against cybercrime and fraud.Location: Barcelona, Spain (Hybrid work arrangements)

At Datavant, we are revolutionizing healthcare data collaboration. Our mission is to ensure that health data is secure, accessible, and actionable for organizations throughout the healthcare landscape, including providers, health plans, researchers, and life sciences companies. From assisting single patients with their medical records to spearheading the AI transformation in healthcare, our team, known as Datavanters, is at the forefront of how data is interconnected and utilized to enhance health outcomes.Become a Part of Our Vision at the Datavant Life Sciences Tech Hub in BarcelonaAs we expand our global presence with the establishment of our Life Sciences Tech Hub in Barcelona, we invite skilled technical professionals who are product-focused and impact-oriented to join us in shaping the future of healthcare technology.Our Life Sciences technology is pivotal in clinical research, real-world evidence generation, pharmacovigilance, and data collaboration across the healthcare ecosystem. As a Backend Engineer at our Life Sciences Tech Hub, you will architect and implement systems that facilitate secure, privacy-conscious access to high-quality healthcare data utilized by pharmaceutical companies, biotech innovators, and research organizations globally. Your contributions will be integral in developing new therapies, expediting clinical trials, and enhancing patient outcomes by ensuring that essential data is interoperable, scalable, and reliable.Careers at Datavant empower you to leverage your technical acumen and problem-solving abilities in pursuit of our mission: to ensure that every healthcare decision is informed by the right data, at the right time, in the right format. We are on the lookout for innovators, problem-solvers, and proactive individuals ready to drive change and build upon our success.

About seQuraseQura is at the forefront of payment technology, offering innovative and flexible solutions that enable merchants to enhance customer acquisition, conversion, and retention.Our tailored payment solutions cater to various sectors, including Retail, Education, Eyewear, Repairs, and Travel, addressing unique challenges and delivering outstanding results.We empower consumers with smart shopping experiences, offering value, convenience, and flexibility through options like interest-free credit and manageable installment plans of up to 24 months.Founded in Barcelona, seQura is a rapidly expanding fintech, growing over 50% year-on-year and currently expanding in Southern Europe and Latin America. We are proud to serve over 6000 businesses and nearly 3 million shoppers, supported by a dedicated team of around 400 employees. Our NPS stands at an impressive 87%, with a Trustpilot rating of 4.7/5 and a Glassdoor rating of 4.1/5, reflecting our commitment to excellence.About the Role As the Agency Sales Manager, you will play a pivotal role in our ambitious growth strategy, leading one of the most impactful channels at seQura: the agency ecosystem. Your objective is to cultivate and expand a network of strategic agency partners, including performance, ecommerce, and CRO agencies, transforming these relationships into tangible revenue streams.This position goes beyond relationship management; it is a strategic business role. You will be responsible for initiating new partnerships, resolving complex merchant account issues, and driving deals forward in areas where we currently lack influence. Your goal is to ensure that seQura is consistently included in key ecommerce discussions from the outset.

Join Our Team at CodewayAt Codeway, we create innovative consumer applications that are enjoyed by millions worldwide. Our focus is on harnessing the power of AI technology to enhance creativity, promote wellness, facilitate learning, and boost productivity. We take pride in delivering exceptional user experiences characterized by speed and quality, leveraging our robust in-house technology and data capabilities.Barcelona is rapidly becoming a vital hub for Codeway, where we are nurturing a strong engineering culture. Our team values ownership, agility, and high standards of craftsmanship. This is an ideal environment for engineers eager to engage closely with product development, influence key decisions, and see their contributions make an impact swiftly.We are currently seeking a Backend Developer to join our Barcelona team and assist in building and scaling top-notch mobile experiences across our diverse consumer app portfolio.Your RoleIn this position, you will be an integral part of our engineering team, responsible for developing and maintaining the backend services that power our mobile and web applications, which are utilized by millions globally. Your responsibilities will include designing scalable microservices and APIs, as well as supporting AI-driven features and model deployments. You will work on high-performance, reliability-focused products with an emphasis on clean architecture.Key Responsibilities◦ Design, develop, and maintain scalable backend services for mobile and web applications.◦ Build and enhance microservices and RESTful APIs with a focus on maintainable architecture.◦ Deploy, monitor, and support AI models and data-driven services in production.◦ Optimize system performance, reliability, and scalability in distributed environments.◦ Collaborate closely with mobile, frontend, AI, product, and DevOps teams to implement new features.◦ Troubleshoot, debug, and enhance system stability and observability.◦ Ensure code quality through peer reviews, testing, and comprehensive documentation.Your Qualifications◦ A minimum of 2 years of professional experience in backend development.◦ Proficiency in designing and implementing APIs and microservices.◦ Strong understanding of system performance optimization and reliability.◦ Experience with AI model deployment and data-driven services in production is a plus.◦ Excellent problem-solving skills and a proactive approach to improving systems.

Prosper AI creates AI Phone Agents tailored for the healthcare sector. These agents support tasks such as patient communications, claims status checks, benefits verification, prior authorization management, and appointment scheduling. The company aims to reduce administrative waste in healthcare, freeing up professionals to focus on direct patient care. Role overview The Forward Deployed Engineer will contribute to advancing Prosper AI’s real-time voice agent technology. This position focuses on building agents that communicate effectively and integrate smoothly with client systems. High performance and low latency are essential requirements. Collaboration with AI Product Managers is a key part of the role, identifying technical enhancements and fine-tuning agent performance to match each client’s needs. Location This is a full-time role based in Barcelona. There may be future opportunities to transfer to the New York office.

About UsAt Visium, we empower enterprise leaders to craft their AI and data strategies, drive transformative initiatives, and effectively integrate AI into their operations—ensuring that their organizations are resilient and future-ready. As a spin-off from Visium, we are channeling our extensive enterprise knowledge into a groundbreaking product: a category-defining Agentic AI solution tailored specifically for pharmaceutical companies.Our product is anchored in AI designed for highly regulated sectors, operating where complexity, compliance, and trust are paramount. Our mission is clear: to expedite the delivery of life-saving medications to the market, making the process faster, more cost-effective, and safer, thereby unlocking significant benefits at scale.With deep roots in enterprise AI and an ambitious vision for the future, we are building a team of innovators, engineers, researchers, and product thinkers to shape a product that is not only technically superior but also transformative.Join us on a mission to redefine the future of work, creativity, and knowledge. Are you ready to help us construct the future of Agentic AI?Role OverviewWe are in search of a Full-Stack Software Engineer eager to help us create the foundation of our Agentic AI Platform from the ground up. You will translate cutting-edge AI concepts into real, production-ready software utilized by scientists and researchers daily.Your responsibilities will encompass the entire stack: from developing intuitive frontends that simplify complex AI systems to designing robust APIs and backend services that facilitate autonomous agents. You will work collaboratively with ML engineers, product designers, and domain experts to forge a platform that merges human expertise with intelligent automation.This role is hands-on and impactful, granting you significant ownership. You will play a critical role in making architectural decisions, experimenting with innovative agentic frameworks, and helping to establish what “state-of-the-art” signifies in the realm of trustworthy AI for life sciences.If you thrive in dynamic environments, are passionate about creating groundbreaking solutions, and aspire to influence the next generation of intelligent software, we would be excited to connect with you.Your daily activities might include:Designing and implementing full-stack features that bring agentic workflows to life for scientists and researchers.Creating orchestration layers, retrieval pipelines, and APIs for intelligent agents using Python and FastAPI.Developing user-friendly and high-performance frontends in React and TypeScript for configuring and monitoring AI agents.Collaborating with ML engineers to integrate LLMs, embeddings, and RAG systems into production settings.Building and maintaining cloud-native infrastructure using containers, Kubernetes, and CI/CD automation.Contributing to architectural decisions, SDK design, and enhancing the developer experience.