Full-Stack .NET/React Contractor Software Engineer

Raul Luis

**@*******.*** - rauluis.com - github.com/devraulu - www.linkedin.com/in/rauluis - 1-718-***-**** Summary

Fullstack Engineer with 5+ years building production web apps and integrating third-party services across fintech, agriculture, and enterprise SaaS. Strong in TypeScript, React, Node.js, Go with hands-on experience connecting REST APIs, OAuth flows, webhooks, and message queues in systems that handle real business load. Comfortable owning projects end to end, working async with remote teams, and shipping work that holds up in production. Skills

React, Next.js, TypeScript, Node, Java, Spring Boot, Go, Python, LangChain, Ollama, PostgreSQL, Docker, AWS, Linux, Claude Code

Work Experience

Fullstack Engineer at DTN, US (Remote)March 2025 to April 2026

● Led frontend development of a whitelabel web app marketplace for grain trading using React/Next.js, TypeScript, TailwindCSS, and shadcn/Radix, migrating legacy Material UI components and delivering significant improvements in loading speeds, task success rate and customer satisfaction.

● Integrated third-party market data APIs (ProphetX, CME) for real-time currency and futures pricing, powering precise trading calculations in a grain trading platform.

● Collaborated with product, design and customer success to scope features, define acceptance criteria and turn customer feedback into shipped improvement.

● Mentored team members and conducted code reviews to ensure high engineering standards, code quality and best practices.

Fullstack Engineer at Workmate, Chile (Remote)March 2024 to September 2024

● Provided on-call production support via direct user channels for a labor accreditation system, triaging and resolving critical bugs across the stack, restoring system stability under time-critical conditions.

● Developed and maintained full-stack features using Angular, NestJS, TypeScript, PostgreSQL and TypeORM in a microservices architecture.

● Managed high-volume context switching across stack domains, delivering rapid fixes and closing 2000+ support tickets with the team.

● Designed and implemented async data pipelines using message queues (AWS SQS) for report generation, decoupling processing from request cycles to improve throughput and reliability with 10x improvements in processing time in some instances.

Software Consultant at Naxmek Business, DR (Remote)August 2022 to February 2024

● Enabled vehicle appraisals and bank circulation for enterprise clients by shipping two full-stack applications, built end to end in Blazor WASM and C#/.NET Core with RESTful APIs, EF Core, and FluentValidation.

● Owned the client relationship directly, presenting progress weekly and translating feedback into scoped technical decisions.

● Mentored a team of 4 developers on .NET best practices, component architecture, and code quality standards. Software Engineer II at Verizon (Newtech Software), DR (Remote)September 2021 to June 2024

● Migrated a JSF monolith to a microfrontend/microservices architecture using React/Next.js and Java Spring Boot, enabling scalable and maintainable automated certification/testing for 5G network devices.

● Mentored teams on modern tech stack adoption (React, Next.js) and implemented CI/CD pipelines with Docker, Kubernetes, and Jenkins.

Projects

crowlr, a concurrent web crawler in golang Repository

● Designed and implemented a concurrent web crawler in Go using breadth-first search, politeness protocol, and robots.txt parsing.

● Optimized performance with a coordinator/worker pattern (fan-in/fan-out) using goroutines, enabling parallel URL processing and efficient CPU utilization.

● Stored and indexed crawled content in PostgreSQL with tsvector, weighted columns, and GIN index for fast search.

● Built a search UI with htmx, and std lib html/template, featuring result highlighting and ranking. takataka, a typing test game Live Repository

● Developed a fully-responsive typing test game in Next.js with multiple game modes, real-time statistics (accuracy, WPM, consistency), and performance graphs.

● Shipped to production using Cloudflare Workers & Pages and Workers Builds CI/CD, ensuring fast, scalable, and reliable deployment.

Education

Computer Science, B.S. from Universidad Catolica Nordestana (2024) IELTS Academic C1

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