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Hi, I'm David Arnal Garcia, a software engineer specializing in high-throughput APIs and data pipelines on AWS and GCP. I design, build, and operate backend microservices with a focus on reliability and scalability. I'm passionate about collaborating with research and frontend teams to deliver end-to-end features, and I have delivered tangible gains like 30% faster APIs, 50% faster ETL runs, and 99.9% uptime through caching, Airflow automation, and auto-scaling.…Hi, I'm David Arnal Garcia, a software engineer specializing in high-throughput APIs and data pipelines on AWS and GCP. I design, build, and operate backend microservices with a focus on reliability and scalability. I'm passionate about collaborating with research and frontend teams to deliver end-to-end features, and I have delivered tangible gains like 30% faster APIs, 50% faster ETL runs, and 99.9% uptime through caching, Airflow automation, and auto-scaling.

David Arnal Garcia

Back-End Developer, Full Stack Developer, Developer, +1

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Hi, I'm David Arnal Garcia, a software engineer specializing in high-throughput APIs and data pipelines on AWS and GCP. I design, build, and operate backend microservices with a focus on reliability and scalability. I'm passionate about collaborating with research and frontend teams to deliver end-to-end features, and I have delivered tangible gains like 30% faster APIs, 50% faster ETL runs, and 99.9% uptime through caching, Airflow automation, and auto-scaling.…Hi, I'm David Arnal Garcia, a software engineer specializing in high-throughput APIs and data pipelines on AWS and GCP. I design, build, and operate backend microservices with a focus on reliability and scalability. I'm passionate about collaborating with research and frontend teams to deliver end-to-end features, and I have delivered tangible gains like 30% faster APIs, 50% faster ETL runs, and 99.9% uptime through caching, Airflow automation, and auto-scaling.

Available to hire

Hi, I’m David Arnal Garcia, a software engineer specializing in high-throughput APIs and data pipelines on AWS and GCP. I design, build, and operate backend microservices with a focus on reliability and scalability.

I’m passionate about collaborating with research and frontend teams to deliver end-to-end features, and I have delivered tangible gains like 30% faster APIs, 50% faster ETL runs, and 99.9% uptime through caching, Airflow automation, and auto-scaling.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Work Experience

Backend Engineer at Sentora

June 1, 2025 - November 16, 2025

Design, build, and operate backend microservices powering large-scale crypto analytics and data APIs. Implemented streaming ingestion and processing with Kafka/Redpanda and PostgreSQL, enabling reliable real-time metrics. Owned REST/gRPC APIs, authentication, and rate limiting; improved reliability, observability, and incident response with Prometheus/Grafana. Collaborated cross-functionally with research and frontend teams to deliver features end-to-end from design to production.

Software Engineer, Backend at Scale AI

May 1, 2025 - May 1, 2025

Architected and implemented a microservices platform on AWS (ECS, Lambda, API Gateway) handling 20K+ daily API requests with 200 ms average end-to-end latency and 99.9% uptime via auto-scaling and blue/green deployments. Built a reusable TypeScript SDK and client libraries to standardize request/response schemas and integration patterns, accelerating partner onboarding by 30%. Introduced Redis caching and an optimized rate limiter to cut redundant downstream service calls, delivering a 25% cost reduction and 35% throughput improvement across critical endpoints.

Web3 Investment Analyst at 3X Capital

November 1, 2023 - November 1, 2023

Sourced and evaluated 120+ seed-stage Web3 startups, building financial models and valuations to support investment decisions. Prepared comprehensive deal memos and analytical reports, streamlining decision-making for general partners. Conducted in-depth market research across blockchain infrastructure, DeFi, and Web3 applications, identifying key trends.