Raul Steaven

About

Senior Full-Stack Developer with 10+ years of experience building scalable SaaS platforms, APIs, and web applications using JavaScript, PHP, Node.js, and Python. Delivers clean, efficient code in fully remote, cross-functional teams, with a track record spanning multi-tenant SaaS, REST/GraphQL APIs, AWS/GCP cloud deployments, and microservices. Strong communicator with excellent English skills and extensive experience across the full development stack, including React/Next.js and back-end frameworks like FastAPI and Django.

Experience

• Electron Engineer (Full-Stack) · Rebel System2022

  • Developed an Electron/React GUI for a military-grade display kiosk, building the full application from scratch. • Architected scalable React front-end using Material UI components and Zustand state management. • Designed custom accessibility layer for four-directional button navigation, enhancing UX for non-standard hardware. • Integrated Protobuf and ZeroMQ pub/sub messaging for real-time back-end communication. Technologies: React, Electron, TypeScript, JavaScript, ZeroMQ, Protobuf, Vite, PNPM, Material UI

• Senior React / Full-Stack Developer · Zeedz GmbH2020 – 2022

  • Led React front-end development for a global NFT SaaS gaming platform ('play for purpose') serving users worldwide. • Built full user flows: authentication, onboarding, purchase/unboxing experience, and digital inventory management. • Integrated a custom GraphQL API, Amazon Cognito, Flow blockchain (FCL), and Pinata distributed file hosting. • Collaborated remotely across international teams (Germany, UK) using async workflows and agile practices. Technologies: JavaScript, React, GraphQL, AWS Cognito, CSS, REST APIs

• DevOps Engineer & Back-end Developer · Agnostiq Inc2018 – 2019

  • Built and deployed distributed tracing with AWS X-Ray across a microservice SaaS architecture. • Integrated a billing and payment gateway service for a cloud computing SaaS platform. • Developed multiple production features for a FastAPI-based back-end service with PostgreSQL. • Maintained infrastructure-as-code using Terraform; managed AWS Lambda, SQS, RDS, and DynamoDB. Technologies: Python, PostgreSQL, React, JavaScript, AWS Lambda, SQS, RDS, DynamoDB, Terraform, FastAPI

• Back-end Developer · AI Sales Service Company2017 – 2018

  • Maintained a back-end system using ChatGPT API for automated B2B sales outreach on behalf of client companies. • Diagnosed and resolved production bugs using Mezmo log analysis platform. • Integrated phone and SMS services via Telnyx API to support outbound communication workflows. Technologies: PostgreSQL, TypeScript, JavaScript, SQL, Redis, Supabase, ChatGPT API, Telnyx

• Senior Software Developer · Secusmart GmbH2016 – 2017

  • Designed and developed secure back-end components for enterprise-grade mobile communication solutions. • Performed source code review and security architecture analysis. • Conducted testing and deployment of multiple back-end modules. Technologies: C, C++, Java, Python, Cybersecurity, Application Security

Education

• Ersta Skondal Bracke University CollegeBachelor's Degree, Computer Science

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