About Alejandro
Hi, I'm Alejandro, a senior full stack engineer with over 8 years of experience, specialized in Node.js, React, AWS, PHP, and building scalable products for startups and international companies.
I have worked across fintech, e-commerce, and SaaS, combining technical expertise with business insight to design solutions that deliver measurable impact.
Skilled at working end-to-end — from frontend development with React and TypeScript to cloud infrastructure and CI/CD optimization — with hands-on experience integrating generative AI and complex APIs.
Recognized for improving processes, scaling platforms, and collaborating closely with product teams to align technology with business goals.
Spanish
Native or bilingual
English
Fluent
Catalan
Native or bilingual
Remote only
Primarily works remotely
Experience
- WorkfullyIngeniero de software superiorHUMAN RESOURCESMarch 2024 - Today (2 years and 3 months)Barcelona, SpainAt a fast-growing recruiting startup, I have full technical ownership and play an active role in shaping product decisions alongside our product manager, ensuring engineering solutions align with business goals.I have adopted a full-stack role, working across the frontend, the API layer, and the infrastructure, ensuring end-to-end consistency, performance, and scalability.Key contributions:
- Impact on business: Contributed to the company’s growth and fundraising success, including its €4.5M Series A round, by delivering a scalable, reliable platform that supported the product vision and investor confidence.
- Architectural improvements: Designed and implemented an event-driven architecture with event bus, SQS and SNS queues for asynchronous, decoupled processing.
- Performance & delivery: Optimized CI/CD pipelines, reducing deployment time by 50%.
- Integrations: Connected the platform with Nylas for automated scheduling and integrated the OpenAI API to deliver AI-powered features.
- System reliability: Enhanced logging, added breadcrumbs for tracing and configured CloudWatch alarms for proactive infrastructure monitoring.
Tech stack: Node.js, TypeScript, React, AWS, DDD, Event-driven, Hexagonal Architecture. - LendableIngeniero de software superiorBANKING AND INSURANCEJune 2023 - January 2024 (7 months)London, England, United KingdomAt a leading UK fintech, I was part of the vehicle loans team, responsible for a fully automated, event-driven loan application pipeline. Third-party companies submitted loan quotes via a public API, and the application would progress through its stages without human intervention, increasing efficiency and reducing operational costs.
- eDreams ODIGEOIngeniero de software superiorTRAVEL AND TOURISMJune 2022 - June 2023 (1 year)Barcelona, SpainAt one of Europe’s largest online travel companies, I tackled the technical challenge of creating a high-performance API to connect directly with hotel suppliers. This replaced the previous white-label solution and enabled the company to maintain its own hotel catalog, significantly increasing the profit margin per sale.Key contributions:
- Designed and developed the API to handle high-volume traffic efficiently.
- Implemented an API Gateway for secure and scalable access.
- Chose the optimal persistence technology between Redis and MySQL for speed and reliability.
- Enhanced observability with Prometheus, Grafana, and Kibana to ensure full traceability of transactions.
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Education
- Técnico Superior Desarrollo de Aplicaciones Web, Programación informáticaInstitut Joan d'Àustria2013Técnico Superior Desarrollo de Aplicaciones Web, Programación informática
- Técnico Sistemas Microinformáticos y Redes, InformáticaInstitut Joan d'Àustria2011Técnico Sistemas Microinformáticos y Redes, Informática