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Erick Guerra

@erickguerra

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Senior full-stack engineer integrating LLMs for scalable, cloud-native products.

Brazil

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What I'm looking for

I’m looking for a remote-first environment where I can build AI/LLM integration—multi-agent workflows, RAG, and cloud-native architecture—and deliver measurable improvements in performance, reliability, and security.

I’m a Senior Full-Stack Software Engineer with 9+ years of experience building scalable web and mobile applications across SaaS, healthcare, and enterprise platforms. I deliver high-performance systems by designing microservices and integrating AI/LLM capabilities into production applications.

Specializing in multi-agent systems, high-scale SaaS platforms, AI-powered applications, and cloud-native systems, I focus on measurable outcomes. I’ve built RAG pipelines (improving search relevance and answer accuracy by 40%), designed multi-agent workflows (35–50% higher completion efficiency), and optimized backend stability and API performance (30–45%) through caching, query optimization, and microservice refactoring—while strengthening security with OAuth2, JWT, RBAC, and audit logging.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Akvelon

Jan 2021 - Present (5 years 5 months)

Integrated LLM-powered features into production systems, reducing manual research and document processing time by 45–60% and improving workflow completion efficiency by 35–50% via multi-agent AI workflows. Built RAG pipelines and optimized backend stability/API performance by 30–45% while strengthening enterprise security with OAuth2/JWT/RBAC and improving release reliability by 35%.

OpenAI API LangGraph Vector Search Multi Agent Systems AWS fastAPI Microservices CI CD

Full-Stack Engineer

EPAM

Jul 2018 - Dec 2020 (2 years 5 months)

Developed scalable web and mobile enterprise applications, improving feature delivery speed by 35% and creating real-time capabilities with WebSockets/SSE and event-driven messaging that increased live data delivery by 35%. Optimized API performance by 30–40% using Redis caching, database query tuning, and backend refactoring, while reducing deployment errors by 30% through AWS/Docker/Kubernetes a

React Next.js TypeScript Microservices GraphQL WebSockets Redis AWS CI CD

Software Engineer Intern

InovaTech Systems

Jul 2016 - Jun 2018 (1 year 11 months)

Contributed to web application development, admin dashboards, and REST APIs while improving internal efficiency by 25–30% through reusable UI components and dashboard features. Wrote unit tests, fixed bugs, and supported debugging activities, reducing recurring issues by 20–25%.