Cosmin Calinescu

Senior Software Engineer at Pink Triangle Press

Rejoined the team as external contractor to migrate some website features to a mobile app; implemented new logging feature using C#, .NET, GraphQL, RESTful API, SQL Server; integrated ecommerce module with Apple and Google payment systems using C#, .NET, ASP.NET, RESTful API, GraphQL, PostgreSQL, SQL Server, Redis, RabbitMQ; supported existing web application by resolving bugs and adding features using ASP Classic, ASP.NET, C#, .NET, Angular.

Engineering Team Lead at Airline Software Company (stealth startup)

Led a team of 4 software engineers and 2 QAs in an Agile environment; participated in software architecture meetings; provided technical guidance and contributed to development, implementation and deployment of critical code changes for airlines compliance with US Department of Transportation regulations; worked on code using C#, .NET, MongoDB, RabbitMQ, AWS S3, ReactJS, Git, Azure; advised on microservices event-driven architecture.

Team Lead - Backend Development at Pink Triangle Press

Guided and mentored a team of 4 software engineers in an Agile environment; led efforts in migrating legacy applications to modern technologies, optimizing performance and scalability; delivered proofs of concepts, designed solutions, provided estimations and reviews; performed code reviews, refactoring, and SQL optimizations; hands-on involvement as needed; implemented automated photo moderation via 3rd party AI engine, reducing manual moderation by 60%; integrated with MongoDB, RabbitMQ, SQL Server; orchestrated production release packages with DevOps, reducing deployment preparation time by 90%; upgraded ecommerce automation to retry failed credit card transactions, increasing revenue by 30%; facilitated Cloudflare Turnstile implementation reducing spam accounts by 30%.

Senior Web Developer at Pink Triangle Press

Implemented performance optimizations and code refactoring, improving reliability of 20+ automated jobs; maintained, monitored, and improved BI ETL processes; integrated Zendesk for customer support, increasing efficiency by 60%; learned a complex BI ETL process quickly and documented it for long-term use.

Web Development Team Lead at Gryphtech Inc

Led and mentored up to 10 people across Dev, QA, Graphic design, Dev Ops, Support in a Waterfall environment; collaborated with cross-functional teams; prepared production release packages with DevOps; improved Google PageSpeed Insights scores; boosted performance of critical SQL Server stored procedures by 20x; reduced porting failures by 99% and shortened porting time by 60%; developed and serviced 40+ RE/MAX real estate websites serving millions of visitors annually across 100+ countries and 40+ languages and currencies.

ASP.NET Developer and ETL Specialist at Gryphtech Inc

Influenced the development of a data strategy for integration and data sharing; developed, enhanced, and supervised worldwide ETL processes; improved import/export reliability by enhancing data and image upload, validation, and quality; upgraded a real estate Web API data import process serving millions of monthly requests (55% of data on client sites) using C#, ASP.NET Web API, SQL Server.

Hands-On Managing Director at CCDOD Development

Leadership role overseeing technology services and software development.

IT Specialist at CEVA Santé Animale

Technical specialist handling IT support and systems maintenance.