Denys Ivanenko Email & Phone Number

Lviv, Ukraine

* Expanded product’s content portfolio by integrating major media providers—including the national public service broadcaster—into our Ruby on Rails CMS, securing 5 new partnerships and boosting company profits.* Enhanced the white-label product API by integrating content ratings from platforms like IMDb using Python and CherryPy, reducing user content selection time by 25% and opening new partnership opportunities.* Improved product performance by 15% by establishing a code… Show more * Expanded product’s content portfolio by integrating major media providers—including the national public service broadcaster—into our Ruby on Rails CMS, securing 5 new partnerships and boosting company profits.* Enhanced the white-label product API by integrating content ratings from platforms like IMDb using Python and CherryPy, reducing user content selection time by 25% and opening new partnership opportunities.* Improved product performance by 15% by establishing a code style using Rubocop, Ruff, pylint, and mypy, and automating enforcement with GitHub Actions and Jenkins. This enhanced codebase health and simplified future development.* Accelerated product development cycles by implementing a CI/CD pipeline with Jenkins and GitHub Actions, integrating code quality checks and unit tests, reducing pull request preparation and merging time by 50%. Show less

Lviv, Ukraine

* Cut deal closure time by 67% by devising and implementing an automated contract generation algorithm using Google Docs API and AWS Lambda functions, processing over 150 contracts monthly, enhancing operational efficiency and collaboration with sales and legal teams.* Engineered integrations with key financial APIs using Python, including TransUnion for credit scoring, Alloy for KYC checks, and Plaid/Treasury Prime for payment management. Enhanced platform capabilities, streamlined… Show more * Cut deal closure time by 67% by devising and implementing an automated contract generation algorithm using Google Docs API and AWS Lambda functions, processing over 150 contracts monthly, enhancing operational efficiency and collaboration with sales and legal teams.* Engineered integrations with key financial APIs using Python, including TransUnion for credit scoring, Alloy for KYC checks, and Plaid/Treasury Prime for payment management. Enhanced platform capabilities, streamlined user onboarding, and improved financial transaction efficiency.* Boosted user engagement and retention by 35% by implementing Firebase integration for real-time push notifications and OAuth authentication into our product.* Implemented agile development processes by educating the team on SCRUM methodologies, introducing regular sprint planning, daily stand-ups, and retrospectives, which reduced product delivery time by 25% and increased team efficiency by 30%.* Ensured consistent and reliable product releases by automating software deployments with CI/CD pipelines using GitHub Actions, reducing errors by 34% and minimizing downtime. Show less

Berlin, Germany

* Directed the technical design for a hospital communication platform, using Go, Python, and Flask in a microservices architecture and RESTful API design. Efficiently delegated tasks and managed timelines to ensure timely delivery, increasing development efficiency by 15% and launching the product successfully.* Managed client communications to address evolving project requirements, providing regular updates on planned features, which enhanced client satisfaction by 20% and ensured… Show more * Directed the technical design for a hospital communication platform, using Go, Python, and Flask in a microservices architecture and RESTful API design. Efficiently delegated tasks and managed timelines to ensure timely delivery, increasing development efficiency by 15% and launching the product successfully.* Managed client communications to address evolving project requirements, providing regular updates on planned features, which enhanced client satisfaction by 20% and ensured timely project delivery using Agile methodologies.* Designed and led the development of complex features using Python, Django, and FastAPI, including push notifications, chat, and media processing. Improved user engagement by 45%, and enhanced product functionality, security.* Conducted regular code reviews to mentor colleagues, improving adherence to coding standards and reducing defects by 20%, enhancing project quality. Show less

Tallinn, Harjumaa, Estonia

* Optimized complex PostgreSQL queries using in-depth profiling tools, resolving performance bottlenecks and reducing query execution time from over 2 minutes to 20 seconds, which enchanced system scalability and user experience.*Implemented a complex user scope management system for a new company product using AWS Lambda and API Gateway, enhancing product security and enabling a successful product launch.* Led technical design and development of several key features… Show more * Optimized complex PostgreSQL queries using in-depth profiling tools, resolving performance bottlenecks and reducing query execution time from over 2 minutes to 20 seconds, which enchanced system scalability and user experience.*Implemented a complex user scope management system for a new company product using AWS Lambda and API Gateway, enhancing product security and enabling a successful product launch.* Led technical design and development of several key features, integrating product thinking and UX insights. Collaborated with the Product Owner to propose innovative solutions, secure approvals, and ensure product functionality and team efficiency. Show less

Lviv, Ukraine

* Engineered a high-load, automated data processing pipeline using Go, AWS Lambda functions, and other AWS components. It improved processing efficiency by 40% and handled a 55% increase in data volume seamlessly.* Enhanced security, enabled new features, streamlined management, and reduced response time by 35% by orchestrating the migration of SOAP-based APIs from IBM API Connect to RESTful APIs on AWS API Gateway, redesigning APIs for REST architecture and executing the… Show more * Engineered a high-load, automated data processing pipeline using Go, AWS Lambda functions, and other AWS components. It improved processing efficiency by 40% and handled a 55% increase in data volume seamlessly.* Enhanced security, enabled new features, streamlined management, and reduced response time by 35% by orchestrating the migration of SOAP-based APIs from IBM API Connect to RESTful APIs on AWS API Gateway, redesigning APIs for REST architecture and executing the transition.* Proactively upskilled in React and front-end technologies to resolve critical integration issues in a back-end-focused team lacking front-end expertise. Applied fixes across front-end and back-end components, improving system functionality and user experience.* Planned and executed the migration of 3 critical RESTful services to Python 3.8, serving over 100k users; enhancing system performance by 12%, improving security, and unlocking future development with new features.* Elevated team productivity by 15% by stepping into a leadership role among equal-grade engineers. When peers faced challenges, I collaborated on solutions, guided design and implementation, and ensured project success. Show less

Vinnytsya, Ukraine

Lviv, Ukraine

Vinnytsya, Ukraine