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Lorena Sordo Pato

@lorenasordopato

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Senior backend engineer focused on scalable Java microservices and distributed systems.

Spain

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What I'm looking for

I seek senior backend roles focused on scalable Java microservices, distributed systems, and high-concurrency platforms with strong engineering culture, mentorship opportunities, and emphasis on reliability and observability.

I am a Senior Backend Engineer with 10+ years designing and building scalable, high-availability backend systems, specializing in Java-based microservices, reactive and event-driven architectures, and API-first platforms that handle high-concurrency workloads.

I have led modernization efforts, owned critical backend services, and provided architectural guidance across the full software lifecycle — from design and implementation to testing, deployment, observability, and production support. I’ve delivered reliable financial and payment-processing workflows, implemented non-blocking reactive services, and managed versioned database evolution in complex distributed environments.

I prioritize correctness, performance, maintainability, and operational readiness: mentoring engineers, participating in on-call rotations, improving CI/CD and observability, and collaborating cross-functionally to deliver robust solutions.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

Freelance

Jan 2024 - Present (2 years 1 month)

Designed and implemented scalable reactive microservices and managed versioned database migrations, improving resource efficiency and system reliability through enhanced testing, observability, and CI/CD automation.

Java Microservices Reactive Programming PostgreSQL Flyway CI CD Docker Observability

Senior Developer

Global Payments Inc.

Jan 2023 - Dec 2024 (1 year 11 months)

Modernized legacy Java backend components and led incident response for mission-critical services, improving correctness and operational uptime while mentoring engineers and driving architectural improvements.

Java Microservices Incident Response Distributed Systems Code Review Mentoring

Senior Developer

EVO Payments

Jan 2019 - Dec 2023 (4 years 11 months)

Designed and enhanced settlement, reconciliation, and payout workflows across multiple PSPs, implementing complex financial logic and maintaining on-call support to ensure financial correctness and uptime.

Java Payments Distributed Systems Performance Tuning Mentoring

Senior Full Stack Developer

Intelligent Payments

Jan 2017 - Dec 2019 (2 years 11 months)

Designed distributed backend services for high-throughput multi-stage processing, improving performance and stability via refactoring, query optimization, and caching while delivering reliable backend functionality with Product and Operations.