AKOS SZABACSI Principal Full Stack Engineer Budapest, Hungary Email: info@cerberus.hu LinkedIn: linkedin.com/in/aszabacsi GitHub: github.com/aszabacsi PROFESSIONAL SUMMARY Principal full stack engineer with 10+ years of experience across employed and freelance roles. Former software developer at CAE and quantitative developer at Citi; since 2018 delivering B2B subcontract projects and own products across Europe. Completed 13+ client engagements spanning product engineering, multicloud platforms, and CI/CD. Strong background in React and TypeScript frontends, Node.js microservices, and cloud-native platforms on AWS, Azure, and GCP. Designs and operates CI/CD pipelines, infrastructure as code (Terraform), and reliable, test-driven delivery. TECHNICAL SKILLS Languages: TypeScript, JavaScript, Python, C++, SQL Frontend: React, React Native, Expo, Vite, Astro, Next.js, Angular, Electron, Gatsby, Material UI, Single-SPA, microfrontends, Storybook, RxJS, Redux, MobX, Apollo Client, GraphQL Backend: Node.js, NestJS, Express, Flask, REST APIs, GraphQL, OpenAPI, event-driven design Databases: PostgreSQL, MongoDB, Firestore, Sequelize Cloud and Multicloud: AWS, Azure, GCP, Pub/Sub, Cloudflare, CloudFront, Cloud Run, AKS, serverless and container workloads Infrastructure as Code: Terraform, Docker, Docker Compose, Kubernetes CI/CD and DevOps: GitHub Actions, CircleCI, automated testing gates, Secret Manager, Artifact Registry, deployment automation, EAS build and OTA pipelines Testing: React Testing Library, Playwright, Vitest, Jest, Cypress Architecture: Nx monorepos, microservices, progressive web apps (PWA), headless CMS, SAP integration, Auth0 PROFESSIONAL EXPERIENCE Self-employed — Full Stack Engineer Budapest, Hungary | November 2018 – Present Tech: React, Vite, TypeScript, Cloudflare, React Native, Expo, NestJS, Docker, GCP, Pub/Sub, REST, Astro, Terraform, Auth0, CircleCI, Nx, Google AI Studio - Delivered 13+ B2B subcontract engagements across Europe spanning product engineering, multicloud platforms, and CI/CD. - Build and ship own products end to end, including market research, product design, implementation, and alpha testing. - Own architecture, implementation, cloud infrastructure, and delivery pipelines for client and proprietary systems. - Full ownership of product development for an AI-assisted strength coaching platform across web, native mobile, backend, and marketing surfaces. - Conducted market research and product design, and organized an alpha testing phase. - Building the coaching progressive web app (PWA) for program creation and athlete performance tracking with React, Vite, and TypeScript, hosted on Cloudflare. - Delivering a native mobile app for athletes to log workouts with React Native, Expo, and TypeScript. - Integrating an AI coach into the platform for assisted training guidance. - Implementing a microservice backend on GCP using NestJS, Docker, TypeScript, and REST APIs, with GCP Pub/Sub for asynchronous communication. - Governing cloud infrastructure with Terraform and authenticating users with Auth0. - Shipping the product hero/marketing site with Astro. - Delivering via an Nx monorepo with CircleCI for CI/CD. - Delivered a cross-channel product combining kiosk workflows with web-based administration. - Built maintainable frontend architecture with API integration and automated test coverage. - Implemented infrastructure automation to support continuous delivery. - Contributed to a production microservice platform for a major international art event. - Worked across backend and platform layers in an Nx monorepo. - Supported service integration, API reliability, and cloud deployment workflows. - Contributed to a microfrontend-based educational product with reliable frontend integration and iterative delivery. - Supported backend and cloud-connected features while maintaining product quality and user experience. - Applied automated UI testing in a multi-service stack. - Developed customer-facing commerce flows for a B2C storefront with a headless content model. - Improved UI consistency and delivery speed using component-based development. - Shipped via a modern JAMstack deploy and CMS workflow. - Delivered frontend capabilities in a modular enterprise environment with strong UX consistency requirements. - Implemented reusable UI patterns and component-driven development. - Applied microfrontend patterns for long-term maintainability. - Built and shipped frontend features for a healthcare webshop using a headless CMS workflow. - Focused on semantic UI quality, accessibility, SEO, and scalable content-driven page generation. - Led architecture and technical delivery for a business-critical ERP product serving B2B and B2C use cases. - Implemented frontend and backend capabilities on Azure. - Coordinated SAP integration and delivered a progressive web app experience. - Implemented full-stack search and reservation flows for a travel-style product. - Delivered frontend and GraphQL backend integration in a fast prototype-to-product timeline. - Built monitoring-focused UI connected to REST-based backend services for manufacturing telemetry. - Delivered a reliable operator-facing status application. - Delivered discovery and technical estimation for an ERP initiative. - Defined delivery scope, implementation complexity, and sequencing recommendations to reduce project risk. - Built a working prototype to simulate auction processes and validate product assumptions quickly. - Covered frontend state handling for interactive bidding flows. - Implemented event operations features across frontend and backend layers. - Established API contracts and delivery structure for maintainable iteration. Citi — Quantitative Developer Budapest, Hungary | August 2017 – October 2018 Tech: React, Python, C++, Distributed Systems - Developed software supporting quantitative and financial engineering workflows in a global banking environment. - Collaborated with stakeholders on reliable delivery within a regulated enterprise setting. CAE — Software Developer Budapest, Hungary | July 2015 – August 2017 Tech: React, Electron, Node.js, C++, Python - Developed and maintained software for aviation training and simulation-related systems. - Delivered application features in a structured enterprise development environment.