Top Tech Jobs & Startup Jobs

Develop scalable full-stack solutions for travel-related systems using Java or Kotlin backend services and modern JavaScript or TypeScript frontends. Responsibilities include API and microservices design, database optimization, event-driven architecture, responsive UI development, testing, monitoring, debugging, and technical project ownership. The role collaborates with product, design, and stakeholders while applying software engineering best practices across distributed cloud systems.

Develop scalable, responsive web applications with React.js, translating designs into accessible, high-quality interfaces. Responsibilities include frontend architecture, state management, performance optimization, API integration, automated end-to-end and unit testing, code reviews, troubleshooting, documentation, and collaboration with backend developers. The role also requires staying current with frontend technologies and contributing to architectural and development best practices.

Lead end-to-end product design for conversational AI and mobile experiences, from discovery through launch. Develop novel interaction models that replace conventional search and filtering, translate LLM capabilities into intuitive customer journeys, and design polished mobile and web interfaces. Collaborate with Product, Engineering, and Data, rapidly prototype and iterate using customer feedback and behavioral insights, and influence product direction across search, personalization, accounts, and product interactions.

Lead the design and development of scalable cloud-native backend systems using Java and Kotlin. Shape architecture and engineering practices for mission-critical banking, payments, and card-issuing platforms. Drive complex delivery, coach engineers, manage stakeholders, and ensure system resilience, performance, production support, and effective CI/CD. Collaborate across agile squads while balancing immediate delivery with long-term technical direction and responsible AI-assisted development.

Develop and maintain high-performance React Native Mobile SDKs, define API requirements, ensure cross-platform compatibility, write tested and maintainable code, troubleshoot performance and compatibility issues, and mentor engineers. The role also involves collaborating cross-functionally, monitoring mobile performance, applying security and authentication best practices, and contributing to innovation in payments technology. Remote-first work is based in Spain.

Owns end-to-end architecture and hands-on implementation for an AI-driven investment platform. Designs production-grade LLM and RAG systems, data and integration architectures, security standards, and Azure cloud infrastructure. Builds prototypes and production code in Python and TypeScript, reviews designs, establishes reusable patterns, leads technology evaluations, and mentors engineering teams. The role partners with investment, risk, finance, and senior technology stakeholders to deliver scalable, secure, compliant, and cost-effective solutions.

Build and deploy AI-powered products for investment, portfolio, risk, finance, and legal teams. Own full-stack production solutions spanning data ingestion, APIs, AI orchestration, frontend interfaces, cloud infrastructure, security, governance, observability, and operations. Develop RAG, agentic workflows, document intelligence, and AI-generated analytics while working directly with senior stakeholders. Rapidly prototype solutions, iterate using user feedback, champion engineering quality and responsible AI practices, and mentor other engineers.

As a Senior Fullstack Engineer, you'll code in various languages, collaborate within cross-functional teams, and mentor others. You'll handle full-stack development and improve system performance.

Lead end-to-end migration consolidating ACH and wire payment processing onto a single payments platform. Own planning, vendor management, requirements traceability, UAT, operational readiness, runbooks/SOPs, and cross-functional coordination with Payments Operations, Treasury, Risk, and Finance. Provide occasional evening/weekend availability during cutover windows.

As a Senior Backend Engineer, you'll develop software applications, collaborate with team members, and leverage JVM languages while ensuring integration and maintaining scalable systems.