I'm a Backend/Platform Engineer focused on Python, AWS, and GCP. I design and ship reliable, low-latency microservices and data-intensive pipelines that scale with business needs. Over my career, I've delivered 30%+ API latency reductions, built production LLM-powered agents, and maintained 99.9% uptime. I thrive in distributed systems, automation, and cloud infrastructure, translating complex rules into robust production systems and driving data-driven decisions.

David Arnal Garcia

I'm a Backend/Platform Engineer focused on Python, AWS, and GCP. I design and ship reliable, low-latency microservices and data-intensive pipelines that scale with business needs. Over my career, I've delivered 30%+ API latency reductions, built production LLM-powered agents, and maintained 99.9% uptime. I thrive in distributed systems, automation, and cloud infrastructure, translating complex rules into robust production systems and driving data-driven decisions.

Available to hire

I’m a Backend/Platform Engineer focused on Python, AWS, and GCP. I design and ship reliable, low-latency microservices and data-intensive pipelines that scale with business needs.

Over my career, I’ve delivered 30%+ API latency reductions, built production LLM-powered agents, and maintained 99.9% uptime. I thrive in distributed systems, automation, and cloud infrastructure, translating complex rules into robust production systems and driving data-driven decisions.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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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.
Software Engineer, Backend at Scale AI
December 1, 2023 - May 1, 2025
Architected a serverless platform on AWS (ECS/Lambda) handling 20K+ daily requests. Achieved 99.9% uptime and <200ms latency via auto-scaling and blue/green deployments. Developed a type-safe TypeScript SDK and Next.js client libraries, reducing integration friction and accelerating partner onboarding by 30%. Engineered a Redis-backed rate-limiter reducing redundant downstream calls by 35% and cutting cloud costs by 25%.
Quantitative Researcher at 3X Capital
June 1, 2023 - November 1, 2023
Built Python scripts to scrape and aggregate on-chain data, enabling quantitative evaluation of 120+ Web3 protocols. Developed complex SQL queries (Dune/Nansen) to analyze protocol health, tokenomics, and user retention. Reviewed Solidity contracts to assess technical risks and security vulnerabilities in DeFi protocols.

Education

M.Sc. Computer Science at Polytechnic University of Valencia
January 11, 2030 - January 1, 2024
B.Sc. Computer Science at Polytechnic University of Valencia
September 14, 2018 - January 1, 2022
M.Sc. Computer Science at Polytechnic University of Valencia
January 11, 2030 - January 1, 2024
B.Sc. Computer Science at Polytechnic University of Valencia
January 11, 2030 - January 1, 2022

Qualifications

Certified Kubernetes Administrator
January 1, 2026 - March 19, 2026
Google Professional Cloud Architect
January 1, 2025 - March 19, 2026
Microsoft Azure Fundamentals
January 1, 2024 - March 19, 2026
AWS Certified Cloud Practitioner - Associate
January 1, 2023 - March 19, 2026
C1 Advanced (English) – Cambridge
January 1, 2020 - March 19, 2026

Industry Experience

Software & Internet, Computers & Electronics, Professional Services, Media & Entertainment, Other