David Tort

David Tort

Software Architect · Platform Engineer

+81 70-4225-9780
degete@outlook.com
degete.cat
degete
degete
PDF
Summary

Senior software engineer with 10+ years of hands-on experience building and operating production systems and cloud infrastructure, seeking high-impact opportunities in fast-growing companies.

Specializes in service architecture, authentication and security engineering, and cloud-native infrastructure, with experience setting technical direction, improving performance and observability, and driving delivery across teams.

Work Experience

DoorDash · Wolt

Senior Software Engineer
April 2024 - Present Tokyo, Japan
Storefront: white-label marketplace platform giving merchants control over branding and sales
  • Authored RFCs and aligned scope across engineering, product and design to deliver new projects and features
  • Drove adoption of AI tools (Cursor, Claude, Copilot, Codex) across the team to speed up development
  • Architected and shipped a Kotlin/Ktor service on MongoDB, supporting 500+ merchants
  • Established Ktlint/Detekt static-analysis standards team-wide, improving consistency
  • Designed shared Protobuf/gRPC contracts that standardized communication across microservices
  • Hardened internal security with scoped service-to-service token authentication
  • Protected high-risk flows from SMS fraud and account takeovers with hCaptcha Enterprise
  • Provisioned AWS infrastructure with Terraform and Helm, and automated CI/CD with GitHub Actions
  • Set up Datadog dashboards, custom metrics and alerts for proactive incident detection

Paidy

Senior Software Engineer
November 2021 - March 2024 Tokyo, Japan
Consumers API: authentication, authorization and identity management
  • Built a high-throughput Rust/Actix auth service on PostgreSQL and Redis, serving 5M+ active users
  • Designed a GraphQL layer that reduced client round-trips, payload size and latency
  • Led a zero-downtime migration of 20M+ accounts from AWS Cognito to in-house JWT authentication
  • Integrated reCAPTCHA Enterprise into auth flows to stop SMS fraud and account takeovers
  • Provisioned AWS ECS with Terraform, reducing costs with autoscaling and Spot Instances
  • Accelerated CI/CD and lowered costs with parallel builds, incremental compilation and caching
  • Shortened onboarding with a dockerized VS Code development environment

NABLAS

Senior Software Engineer
December 2019 - November 2021 Tokyo, Japan
PyGrade: e-learning platform to improve Python skills
  • Delivered a Django service and Vue SPA for a platform serving 10,000+ learners
  • Integrated Pyodide as an in-browser WebAssembly Python runtime, eliminating server-side code execution
  • Provisioned a GKE cluster with Terraform and automated CI/CD deployments with GitHub Actions
iLect: e-learning platform for AI/ML courses
  • Developed and maintained a Flask service and Vue SPA serving 200+ students per session
  • Provisioned EKS, GKE and AKS clusters with Terraform, scaled to class schedules
  • Automated multi-cloud deployments with GitHub Actions and Cloud Build
  • Maintained CUDA-enabled Docker images with JupyterLab, VNC and up-to-date ML toolchains
ML Research Platform: in-house high-performance computing cluster for the R&D team
  • Administered JupyterHub on an on-premises GPU cluster with Docker Swarm
  • Managed cluster configuration with Ansible and monitoring with Prometheus and Grafana
  • Maintained custom Docker images for PyTorch, TensorFlow and other ML frameworks

Innovatech Studio

iOS Developer
November 2018 - December 2019 Tokyo, Japan
Hapilk: in-house iOS health app to encourage employees to exercise
  • Shipped the app to a 25,000+ employee user base, syncing on-device health metrics with HealthKit
  • Processed health data concurrently on-device with GCD (DispatchQueue/DispatchGroup)
  • Built a Laravel service powering company-wide activity rankings across all users' health data
  • Connected the app to the service with JWT authentication using Moya and Alamofire
  • Automated App Store releases with CircleCI and Fastlane, and monitored crashes with Crashlytics
Logijob: SaaS recruitment platform for logistics companies
  • Delivered a Laravel service with Laravel Nova admin panel and a Vue SPA
  • Deployed with Docker on Amazon ECS and automated CI/CD with CircleCI

Rhinoshield

Full Stack & DevOps Developer
September 2016 - September 2018 Taichung, Taiwan
Boltics Core: e-commerce management service with Shopify integration
  • Built a real-time Laravel service syncing Shopify orders and inventory, processing 50,000+ orders daily
  • Drove project delivery with JIRA, coordinating scope and priorities across the team
  • Scaled the application horizontally on Amazon EC2 behind an Elastic Load Balancer
  • Automated CI/CD with Bitbucket Pipelines and set up Amazon CloudWatch alerting
MassFulfill: automated fulfillment app published on the Shopify App Store
  • Engineered event-driven order sync across Shopify stores with webhooks and Amazon SQS
  • Implemented team billing and subscriptions with Laravel Spark, enabling recurring revenue
  • Provisioned a production Ubuntu Server with NGINX on Amazon EC2
In-house Shipping System: automated shipping system for processing orders
  • Developed a Laravel service for concurrent multi-order processing, boosting throughput and reducing human error
  • Delivered a Vue and Bootstrap SPA with real-time order status updates

WSI

Full Stack Web Developer
December 2015 - August 2016 Taichung, Taiwan
EasyBank: P2P lending platform
  • Developed a Node/Express service with JWT auth, deployed on Amazon EC2 with NGINX and PM2
  • Built a responsive Angular SPA and a hybrid Android/iOS app with Ionic

9CIRCLE

Web Developer & Graphic Designer
September 2014 - November 2015 Taichung, Taiwan
9CIRCLE Int: company's official website and brand identity
  • Launched the online product catalog with WordPress and WooCommerce
  • Designed the brand identity, product packaging and a printed multilingual product catalog
Education

Seoul National University

Exchange program in Computer Science and Engineering
September 2013 - June 2014 Seoul, South Korea

Autonomous University of Barcelona

BSc + MSc in Computer Engineering
September 2009 - June 2014 Barcelona, Catalonia
Skills
Technologies
LanguagesGo, JavaScript, Kotlin, PHP, Python, Rust, Swift, TypeScript
FrameworksDjango, gRPC, Ktor, Laravel, Nuxt, React, Tailwind, Vue
DatabasesMongoDB, MySQL, PostgreSQL, Redis, SQLite
InfrastructureAnsible, AWS, Docker, GCP, GitHub Actions, Kafka, Kubernetes, Terraform
ObservabilityDatadog, Grafana, Prometheus
AIClaude, Codex, GitHub Copilot
Languages
NativeCatalan, Spanish
ProficientEnglish
IntermediateChinese, Japanese