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I am an engineering leader with over 8 years of experience building fintech and SaaS platforms across Europe and the US. With a strong background in full-stack development, cloud infrastructure, and team leadership, I thrive in delivering scalable and maintainable software solutions. I have contributed significantly to platforms in companies like Block (Square) and currently lead technical efforts at Dealcar in Barcelona. I am passionate about high-impact engineering opportunities and am currently exploring new roles in the UAE tech ecosystem. Alongside my professional career, I engage in entrepreneurial projects and have a deep interest in innovative technologies such as blockchain and decentralized systems.…I am an engineering leader with over 8 years of experience building fintech and SaaS platforms across Europe and the US. With a strong background in full-stack development, cloud infrastructure, and team leadership, I thrive in delivering scalable and maintainable software solutions. I have contributed significantly to platforms in companies like Block (Square) and currently lead technical efforts at Dealcar in Barcelona. I am passionate about high-impact engineering opportunities and am currently exploring new roles in the UAE tech ecosystem. Alongside my professional career, I engage in entrepreneurial projects and have a deep interest in innovative technologies such as blockchain and decentralized systems.

Alexander Ramirez

Full Stack Developer, Cloud Developer, DevOps Developer

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I am an engineering leader with over 8 years of experience building fintech and SaaS platforms across Europe and the US. With a strong background in full-stack development, cloud infrastructure, and team leadership, I thrive in delivering scalable and maintainable software solutions. I have contributed significantly to platforms in companies like Block (Square) and currently lead technical efforts at Dealcar in Barcelona. I am passionate about high-impact engineering opportunities and am currently exploring new roles in the UAE tech ecosystem. Alongside my professional career, I engage in entrepreneurial projects and have a deep interest in innovative technologies such as blockchain and decentralized systems.…I am an engineering leader with over 8 years of experience building fintech and SaaS platforms across Europe and the US. With a strong background in full-stack development, cloud infrastructure, and team leadership, I thrive in delivering scalable and maintainable software solutions. I have contributed significantly to platforms in companies like Block (Square) and currently lead technical efforts at Dealcar in Barcelona. I am passionate about high-impact engineering opportunities and am currently exploring new roles in the UAE tech ecosystem. Alongside my professional career, I engage in entrepreneurial projects and have a deep interest in innovative technologies such as blockchain and decentralized systems.

Available to hire

I am an engineering leader with over 8 years of experience building fintech and SaaS platforms across Europe and the US. With a strong background in full-stack development, cloud infrastructure, and team leadership, I thrive in delivering scalable and maintainable software solutions. I have contributed significantly to platforms in companies like Block (Square) and currently lead technical efforts at Dealcar in Barcelona.

I am passionate about high-impact engineering opportunities and am currently exploring new roles in the UAE tech ecosystem. Alongside my professional career, I engage in entrepreneurial projects and have a deep interest in innovative technologies such as blockchain and decentralized systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Founding Engineer – Senior Software Engineer (Technical Lead) at Dealcar

May 1, 2023 - Present

As employee #0, I designed and led the implementation of a cloud-native, modular architecture utilizing Next.js and Nx monorepo, which enabled rapid vertical team deliveries with isolated deployments and CI/CD automation. I scaled the MVP into a comprehensive vertical SaaS platform including DMS, custom CRM, and Verifactu-compliant invoicing, managing the technical roadmap, sprint planning, and stakeholder alignment. The platform grew to over 300 B2B clients, €30K MRR, and 350+ daily active users. Additionally, I led a cross-functional squad, conducted product discovery, user interviews, wireframing, and established engineering KPIs. The backend was architected using Java Spring and MongoDB on Google Cloud Platform, with integrations of third-party services like Stripe, Firebase, and Sentry. The technology stack included Next.js, Nx, React, Tailwind, Java Spring, MongoDB, GCP, Stripe, Firebase, Docker, GitHub Actions, and Vercel.

Senior Software Engineer (L5), International Merchant Network at Block (Square)

May 1, 2023 - August 4, 2025

I led the design of a server-side rendered React architecture to integrate the existing EU payment system into the US and global checkout platform, allowing for deprecation of the EU platform and reducing compute and platform costs by 20% due to service deduplication. I introduced feature flag governance using LaunchDarkly, enabling gradual rollouts and instant rollback strategies across multiple markets. I improved system observability and recovery processes with Datadog and alerting workflows, reducing customer-reported incidents by 40% and incident resolution time by 60%. I collaborated with US and APAC teams to unify infrastructure and deployment practices under a shared CI/CD setup. Additionally, I participated as a core technical interviewer conducting over 50 interviews for multiple business units. Technology stack included React, React Native, Java Spring, AWS, Buildkite, Docker, LaunchDarkly, Amplitude, and Datadog.

Software Engineer → Software Engineer II (L4), Clearpay EU Platform at Clearpay / Afterpay / Digital Origin

January 1, 2022 - August 4, 2025

I led development of key features in the EU buy-now-pay-later platform, integrating PSD2, 3D Secure, and Open Banking APIs for compliance and credit evaluation. I created a dynamic, country-specific ID scanning system and real-time KYC & risk flow that reduced identity verification time by 80%. I architected a React Micro-frontend platform to enable parallel delivery by vertical teams, which accelerated time-to-market and supported full launch within 6 months. I migrated the CI/CD stack to a GitOps-based pipeline using ArgoCD, enhancing deployment reliability and rollback safety. I also mentored junior engineers, contributed to hiring, onboarding, and team scaling within agile teams. The tech stack included React, Java Spring, AWS, PostgreSQL, MongoDB, CircleCI, Jenkins, and ArgoCD.

Junior Software Engineer at Protofy.xyz

June 1, 2019 - August 4, 2025

Delivered fast MVPs across various domains using Node.js, Python Django, React, Vue, and RabbitMQ.