Cristi P.

• Founded and bootstrapped Comerz.ro, a multitenant e-commerce platform that enabled entrepreneurs to create and manage online stores.
• Designed and built the MVP end-to-end using Ruby on Rails and PostgreSQL, implementing tenant isolation, storefront management, product catalog workflows, and production deployment.
• Leveraged AI-assisted development workflows with Codex, Conductor, and Linear to accelerate implementation, product iteration, and delivery.

Zerofy is a climate technology company developing a mobile platform that helps users measure, understand, and reduce household carbon emissions.

• Built backend workflows for the Zerofy mobile application using Google Cloud Functions, Firebase, and Node.js on Google Cloud Platform (GCP).
• Implemented serverless, event-driven integrations that connected the application with external vendors and data providers.
• Reverse-engineered undocumented vendor interfaces when official documentation was incomplete or unavailable.
• Improved code maintainability through targeted refactoring, code cleanup, and the establishment of clearer boundaries between integration components.

PTC Schweiz is a global enterprise software company providing augmented reality, IoT, CAD, and product lifecycle management solutions for industrial and manufacturing organizations.

Project: Vuforia

• Built, owned, and operated Vuforia Cloud microservices using Scala, Akka, and AWS for manufacturing-focused augmented reality products.
• Collaborated with Machine Learning engineers to integrate models into production APIs and containerized services, and designed and implemented a data pipeline and workflow orchestration system for ML models from scratch.
• Managed distributed systems concerns, including scalability, fault tolerance, load balancing, service security, production deployments, and on-call incident response.
• Operated Kubernetes-based services and improved observability using Elasticsearch, Logstash, and Kibana (ELK Stack).
• Built CI/CD pipelines and infrastructure automation using GitHub Actions, TeamCity, AWS CloudFormation, and Terraform.
• Delivered customer-facing backend APIs, including search APIs for Vivino and production APIs for machine learning model integrations.
• Improved system reliability by implementing end-to-end REST API tests in Scala and refactoring long-lived services.
• Strengthened application security by integrating Veracode and Snyk, applying OWASP best practices, and implementing Single Sign-On (SSO) with Amazon Cognito.
• Built internal deployment and developer productivity tools, and led initiatives that improved engineering efficiency across multiple teams.
• Authored OpenAPI 3 specifications and implemented a WebSocket proxy service for real-time remote assistance and collaboration.
• Conducted technical interviews and contributed to engineering hiring decisions.

Qualcomm is a global semiconductor and telecommunications technology company developing mobile, connectivity, and cloud-based products.

• Expanded AWS cloud services using Scala and the Play Framework.
• Automated operational processes and internal tooling with Python and Bash.
• Migrated services to Docker and maintained legacy Ruby on Rails applications.
• Designed and developed an internal Ruby DSL for cross-team API testing.
• Contributed to scaling AWS infrastructure from a handful to hundreds of Amazon EC2 instances, leveraging services including Amazon S3, Amazon SQS, Amazon DynamoDB, Amazon Cognito, and Auto Scaling.

Kooaba is a computer vision and visual search technology company developing image-recognition products for mobile and enterprise use cases.

• Initiated and led the migration from a monolith to Scala microservices, improving scalability and reducing memory usage.
• Built REST APIs and backend services with Ruby on Rails.
• Rewrote and maintained an Android application.
• Optimized MySQL queries and indexes on live production databases with 30m+ rows.

Alliants is a software development consultancy delivering custom web applications and digital products for international clients.

• Hired and led a team of 3 engineers delivering Ruby on Rails applications for customer projects.
• Coordinated on-site delivery with customers in London and translated business requirements into implementation plans.