Teodor Y.

• Developed and maintained backend services in Go for large-scale product and campaign management APIs, ensuring data consistency and high performance.
• Implemented event logging, metrics tracking, and search capabilities using MongoDB and Elasticsearch to improve visibility across merchant and campaign operations.
• Enhanced authentication and security layers through JWT token validation, refactoring, and integration with existing services.
• Built and optimised product feed imports and integrations for partner networks (e.g. Webgains, Tradedoubler), including pagination, language sanitisation, and GTIN-based filtering.
• Improved backend stability and compliance by anonymising IP addresses for GDPR, adding cleanup jobs, and refining notification and webhook systems.
• Collaborated with frontend developers and QA engineers on REST API endpoints for admin and public interfaces, including Offers, Deals, and CPC features.

Technologies: Golang, MongoDB, Elasticsearch, gRPC, REST APIs, Docker, GitLab CI/CD.

• Engineered and deployed a robust observability infrastructure, enhancing real-time system performance monitoring, issue detection, and alerting. Ensured compliance with security regulations and enabled seamless external data integration, significantly improving decision-making;
• Led the development of a business telemetry system to capture detailed user interactions, providing critical insights for both technical and strategic decisions. Prioritized data privacy and optimized for delayed data delivery, boosting marketing strategies and product development;
• Managed and optimized cloud infrastructure to enhance system efficiency and performance. Key achievements included streamlining GitHub actions, automating cluster scaling in an EKS environment, and minimizing redundant metrics, thereby improving operational effectiveness and driving cost optimization;
• Enhanced the Minder open-source tool by developing features that improved security practices, usability, and reliability, directly contributing to the safeguarding of the software supply chain.

• Spearheaded the architecture design, implementation, and enhancements for an ambitious Couchbase Serverless Databases project, managed the entire database lifecycle—including metrics, logging, maintenance, and troubleshooting—and effectively addressed product bugs and cloud architecture issues.
• Played a pivotal role in developing and refining a cluster maintenance framework, created a reliable, idempotent, and fault-resilient system that accounted for customer preferences and employed a gradual update process.
• Was instrumental in developing the Fleet Manager tool, which streamlined monitoring, observation, and troubleshooting operations for Couchbase clusters, and supported SREs and customer-facing engineers.
• Enabled at-rest encryption for cluster secrets in Couchbase nodes, coordinated between the control plane and data planes of clusters, and implemented AES 256-bit encryption in GCM mode for secure secret management.

• Implemented OAuth 2.0 and OpenID Connect for an ASP.NET MVC application, enhancing security with a custom brute-force prevention feature on API endpoints;
• Designed and integrated an audit service using Azure Functions and Azure Cosmos DB, effectively managing and optimizing data for practice assessment tests.