AI-First Developer / Builder (Python & Full-Stack)

GenLayer Labs – Barcelona (Hybrid)Join us at GenLayer Labs, a pioneering decentralized AI research collective that is revolutionizing the trust infrastructure for the AI Age. We are the creators of GenLayer—an innovative, AI-driven Court of the Internet, a synthetic jurisdiction where autonomous agents and protocols can reason, transact, and govern at machine speed with unparalleled sovereignty, transparency, and trust. Our cutting-edge infrastructure empowers autonomous agents and smart contracts to access real-time web data, interpret natural language, and resolve disputes through AI consensus.Backed by industry leaders like Maelstrom (Arthur Hayes), Arrington Capital, and North Island Ventures, we are forging a new paradigm of decentralized infrastructure focused on trustless decision-making for the AI era.Role OverviewWe are on the lookout for an AI-First Developer / Builder who is eager to explore and create prototypes, tools, and internal systems that expand the potential of intelligent contracts and AI-enabled infrastructure.You will work closely with a compact, talented technical team in a dynamic AI-assisted development environment, utilizing tools such as Claude Code, OpenClaw, and other agent-based workflows to drive rapid exploration and development.This role is perfect for someone who: Thrives on rapid development. Is adaptable to ambiguity and experimentation. Integrates AI agents into their daily workflow. Is passionate about working with innovative AI and blockchain technologies.Your Responsibilities Develop AI-driven tools, prototypes, and internal systems. Create Python backends and APIs for AI-enhanced features. Work with LLMs, agents, and RAG pipelines. Prototype AI-assisted developer workflows. Experiment with novel AI capabilities for intelligent contracts. Design small full-stack applications (backend and simple frontend). Utilize AI copilots and agents extensively in development. Collaborate closely with a small team to rapidly test and iterate on ideas.

At Datavant, we are revolutionizing healthcare through data collaboration. Our mission is to ensure that health data is secure, accessible, and actionable, enabling organizations—from healthcare providers to researchers—to improve patient outcomes. Join our innovative team and contribute to groundbreaking solutions that power the AI revolution in healthcare.Your Opportunity: Be Part of Our Life Sciences Tech Hub in BarcelonaAs we expand our global presence, we're establishing a Life Sciences Tech Hub in Barcelona and are in search of skilled full stack engineers who are passionate about creating impactful healthcare technology. Your role will involve designing and implementing systems that ensure secure, privacy-compliant access to high-quality healthcare data for pharmaceutical companies, biotech innovators, and research institutions worldwide. Your contributions will accelerate clinical trials and improve patient care by making critical data interoperable and trustworthy.At Datavant, you'll have the chance to apply your technical skills and problem-solving expertise in a supportive environment dedicated to our mission: empowering every healthcare decision with the right data, at the right time, in the right format. We seek innovators, dreamers, and doers who are ready to make a difference.Why Join Our Tech Team?Collaborate with engineering leaders on strategies and technology vision.Mentor colleagues through code reviews and software design.Work with a diverse technical stack, including cloud and on-premise solutions, big-data analytics, and complex algorithms.

Join ResilientCo, a pioneering Earth Observation firm that integrates design, manufacturing, and operation of satellite systems to provide actionable insights to government and commercial sectors.Our innovative approach allows us to create satellite systems from the ground up, ensuring rapid deployment, dependable operations, and ongoing monitoring across key areas. We empower our clients with more than just one-time imagery, guiding them towards a continuous understanding and responsive decision-making process, with options ranging from managed monitoring to complete satellite ownership and control.Our cutting-edge technology serves various applications, including climate monitoring, agriculture, energy management, infrastructure assessment, and defense operations, equipping organizations to identify changes, mitigate risks, and strategize confidently.Our dedicated team spans five countries, uniting experts in satellite engineering, software development, data science, manufacturing, and operational execution. We pride ourselves on being a team of passionate builders who cherish ownership, curiosity, and effective execution, while fostering an environment of humility, honesty, and empathy. About the TeamThe Platform serves as the customer-facing interface for all our products. Our team is tasked with developing the platform's essential services, APIs, and applications that define, market, and deliver our offerings. We work closely with Sales, Mission Operations, Tasking, and Image Processing and Analytics teams to translate our technical capabilities into meaningful user experiences. Our collaborative culture is built on high trust, significant ownership, and a preference for data-driven decision-making. About the PositionWe are looking for a seasoned Full-Stack Developer who can take full ownership of product features. This role transcends mere coding; it’s about creating substantial product outcomes. You will be pivotal in the entire development lifecycle, from designing effective database schemas and crafting concise APIs to developing user-friendly interfaces and deploying reliable features in production, always aligning your technical choices with customer-centric goals.

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.

Role Overview Miratech is hiring a Senior Full Stack Developer in Barcelona with a focus on Java and Angular. This position plays a key part in creating and delivering web solutions that improve user experience and support business goals. What You Will Do Design and build web applications using Java and Angular Work closely with cross-functional teams throughout the development process Contribute to high-quality software delivery Follow and promote coding and development best practices

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.

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

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!

Why Join dLocal?At dLocal, we empower some of the world's largest companies to seamlessly collect payments across 40 countries in emerging markets. Global brands trust us to enhance conversion rates and facilitate effortless payment expansion. As both a payments processor and a merchant of record in our operating regions, we enable merchants to penetrate the fastest-growing, emerging markets available.Becoming a part of dLocal means joining an incredible global team dedicated to making significant impacts. With over 1,000 teammates from more than 30 nationalities, you will have the opportunity to develop an international career that influences millions of lives every day. We are builders who embrace challenges and prioritize customer satisfaction. If this resonates with you, we are confident you will thrive in our environment.What’s the Opportunity?We are in search of a dynamic Senior Python Software Engineer to join our team, someone who is adaptable and ready to take on diverse responsibilities. Your primary focus will be on software development and creating scalable AI solutions, but you may also engage in architectural design and data analysis from time to time.We seek a proactive builder who takes extreme ownership and has a clear product vision. We aim to move beyond the Proof of Concept stage and need someone who actively identifies and resolves bottlenecks, driving the creation of robust solutions that enhance our engineering ecosystem and deliver measurable, data-driven results.

Jobgether is hiring a Full-Stack Product Engineer based in Spain. This role focuses on building and improving products that support both user experience and business goals. Role overview As a Full-Stack Product Engineer, you will collaborate with team members to create new features and maintain existing applications. The position involves working across both front-end and back-end technologies, ensuring that products are reliable and user-friendly. What you will do Develop and maintain applications using a mix of front-end and back-end tools Work closely with colleagues to deliver features that improve the product Contribute to projects aimed at enhancing user experience and supporting business objectives Requirements Experience with both front-end and back-end development Ability to collaborate effectively within a team Interest in building products that make a difference for users and the business

Welcome to Lever! We are currently seeking a talented individual for the position of House Builder 2 in beautiful Barcelona, Spain. This role is part of our commitment to excellence in the talent acquisition industry.IMPORTANT: This job posting is part of Lever's testing environment. Please refrain from applying.At Lever, we have been at the forefront of innovation in recruitment for the past decade, providing cutting-edge hiring software that helps companies like Netflix, Yelp, Cirque du Soleil, Shopify, and Spotify to build their teams effectively. Our unique approach to talent acquisition has positioned us as industry leaders, and we pride ourselves on being recognized as the top workplace in San Francisco and one of the best in the United States. We believe that our employees, known as 'Leveroos,' are our greatest asset, and we are dedicated to fostering a people-first culture.

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

Join Blacklane as a Senior Data Analyst (Full Stack), where you will be instrumental in shaping data-driven strategies that influence critical business decisions. Your expertise will transform complex datasets into actionable insights, while you design and maintain dashboards and visualizations to present key metrics. Collaborating with cross-functional teams, you will address their analytical needs, ensuring data integrity and quality at every step of your analysis.This role not only provides the opportunity for continuous learning but also offers flexible work arrangements in a diverse and inclusive environment.

Join Prosper AI as an AI StrategistLocation: Barcelona (On-site)Type: Full-timeAbout Prosper AIAt Prosper AI, we are revolutionizing healthcare through our innovative AI Phone Agents that provide human-like expertise while drastically cutting costs. Our AI agents streamline administrative tasks such as patient scheduling, claims status checks, and benefit verifications, aiming to eliminate $200 billion in administrative waste, thus allowing healthcare professionals to concentrate more on patient care.About the RoleAs an AI Strategist, you will be pivotal in deploying and optimizing our AI agents across some of the most intricate healthcare organizations globally. You will lead strategic initiatives from configuration to full-scale production, ensuring measurable impacts for our clients. Your insights will help refine our external deployments and internal best practices.Key ResponsibilitiesOversee the complete deployment of AI agents on Prosper AI’s platform for U.S. healthcare clients, including hospitals and clinics.Collaborate with clients and internal teams to map out administrative workflows and pinpoint areas ripe for AI-driven automation.Evaluate deployment performance data to identify challenges and promote continuous improvement.Create and enhance internal playbooks and frameworks to expedite future deployments.Transform complex operational challenges into actionable strategies that connect technology with healthcare operations.Who You AreHolds a Bachelor’s degree or higher in Computer Science, Engineering, Business, Economics, or a related field.Possesses strong analytical skills with the ability to dissect complex processes for AI impact.Demonstrates a passion for the convergence of AI, healthcare, and operations.Thrives in a dynamic startup environment with evolving priorities and significant ownership.Bonus: Familiarity with healthcare workflows, LLMs, automation tools, or enterprise software deployments is a plus.

Veeva Systems is a pioneering organization dedicated to transforming the life sciences sector through our industry-leading cloud solutions. As one of the most rapidly expanding SaaS companies globally, we achieved over $2 billion in revenue last year, with significant growth prospects on the horizon.Our core values drive us: Doing the Right Thing, Ensuring Customer Success, Supporting Employee Success, and Maintaining Speed. In 2021, we made history by becoming a public benefit corporation (PBC), legally committed to balancing the interests of our customers, employees, society, and investors.Embracing a Work Anywhere philosophy, we empower you to choose your ideal work setting, whether from home or in the office.Be part of our mission to revolutionize the life sciences industry, positively impacting our customers, employees, and communities.The RoleAs a Lead Python Engineer at Veeva Link, you will play a crucial role in developing the intelligence framework for Life Sciences, creating interconnected data applications that accelerate drug development and enhance patient outcomes. Our belief is clear: merging high-quality data with cutting-edge software yields tremendous value.Execution is key. We prioritize speed, accuracy, and quality in our daily creations. Our engineering methodology focuses on precise product definitions leading to thorough technical designs. We utilize a modern tech stack to ensure our applications are reliable and deliver a superior user experience.Our initiatives focus on two essential areas:Data-Driven InsightsWe create advanced applications that map and interpret global scientific and medical expertise, offering impactful insights and AI-driven intelligence. Engineers in our team tackle intricate data modeling, entity resolution, and sophisticated machine learning challenges.Intelligent Business WorkflowsOur focus is on developing intelligent workflows that streamline business processes, driving efficiency and effectiveness in the life sciences domain.

Join our elite AI Special Forces team at Darwin AI! We are seeking a dynamic and enthusiastic AI Support Specialist who is committed to providing rapid, effective, and high-quality assistance to our clients. If you are passionate about technology and AI, and enjoy tackling challenges head-on, this role is a perfect fit for you.As an AI Support Specialist, you will be instrumental in addressing client inquiries and resolving issues related to their AI agents. You will serve as the frontline for clients needing assistance with technical problems and system integrations. Your ability to troubleshoot effectively and collaborate with teams across Customer Success, Product, and Engineering will ensure that our clients receive exceptional support and maintain a strong relationship with Darwin AI.Your responsibilities will include:Responding to customer inquiries through platforms such as WhatsApp, email, and Slack, ensuring swift responses and high satisfaction rates.Troubleshooting and resolving technical issues, particularly those involving AI behavior, configuration, and API integrations.Monitoring alerts from internal tools and acting upon customer feedback submitted through the Darwin platform.Collaborating closely with Product and Engineering teams to escalate complex issues and contribute to product enhancements.Documenting support activities in our systems to maintain accurate records of issues and solutions.Identifying recurrent issues and assisting in the development of internal documentation and FAQs.Teaming up with Customer Success and Onboarding to provide a seamless customer experience.Auditing AI interactions to discover bugs or areas for improvement.Ensuring that all critical feedback and issues are resolved within agreed service level agreements (SLAs).

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.

Veeva Systems is a purpose-driven organization and a leader in the industry cloud sector, empowering life sciences companies to expedite the delivery of therapies to patients. As one of the fastest-growing SaaS companies in history, we achieved over $2 billion in revenue in our last fiscal year and continue to see vast growth potential.Our core values at Veeva are: Do the Right Thing, Customer Success, Employee Success, and Speed. We are not just any public company; in 2021, we made history by becoming a public benefit corporation (PBC), which legally commits us to balancing the interests of customers, employees, society, and investors.As a Work Anywhere company, we offer flexibility for you to work from home or in the office, allowing you to thrive in your preferred environment.Join us in transforming the life sciences industry, as we commit to making a positive impact on our customers, employees, and communities.The RoleOpenData Clinical serves as the cornerstone for intelligent clinical operations.Patient recruitment remains the most significant challenge within the Clinical Trials industry. Delays in this process can postpone studies and, ultimately, delay the delivery of life-changing treatments to those in need. Our mission is to hasten this process.By identifying the most effective clinical sites, we facilitate quicker drug market entry. We project that OpenData Clinical will save at least one life annually through the optimization of Clinical Operations.You will be responsible for developing the backbone of our data quality engine and pipelines. Your contributions will enable thousands of curators to efficiently manage extensive datasets with accuracy, providing the life sciences industry with the high-quality data essential for accelerating clinical trials and drug development.This position is ideal for an engineer who prioritizes architectural integrity over quick fixes. You will be part of an engineering-driven culture that values technical excellence and grants true autonomy to innovate.

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.

Join our dynamic Operations team at Darwin AI as an AI Onboarding Specialist! We are seeking an individual who is not only enthusiastic about technology and artificial intelligence but also values providing exceptional service. This position is perfect for those who enjoy initiating client relationships, converting requirements into functional AI solutions, and ensuring a seamless implementation process for our new customers.In this crucial role within our Onboarding team, you will be instrumental in the initial phase of the customer journey—helping clients to unlock the potential of Darwin AI from day one.Your responsibilities will include: Facilitating the onboarding process for new client accounts, ensuring all essential information is gathered and configured for a successful launch. Leading kick-off meetings with clients to align expectations, collect requirements, and guide them through the onboarding process. Building and configuring AI assistants utilizing internal tools, tailored to client specifications and business logic. Collaborating with Sales, Customer Support, and Product teams to ensure a smooth transition and cohesive client experience. Maintaining clear and consistent communication with clients via WhatsApp, following up regularly to address any challenges and ensure progress. Delivering the initial version of the AI solution promptly and ensuring it adheres to quality standards before going live. Monitoring and managing onboarding timelines to ensure accounts are launched within the service level agreement (SLA) and are not identified as churn risks. Providing initial training and resources to empower clients in testing and understanding their AI assistant.