Alex Kosin Email & Phone Number

Atlanta, Ga, Us

Atlanta, Georgia, Us

• Project at The Home Depot’s Store Checkout team.• Developed contactless payments in the US. The pilot stores were successfully introduced for mainline, self-checkout, and multi-role registers in July 2024. The tech stack contained Java 11-21, Maven, Google Cloud, Ingenico pin pads, Voltage/OnGuard encryptions, and integration with the Fiserv platform. Also Node.JS, JavaScript / TypeScript for the register's interface.• Led the offshore dev team.

New York, Ny, Us

• Played a pivotal role in a high-traffic platform, engaging over 20 million daily users.• Gathered a new team of experienced engineers to migrate the microservices from the old Java 8 platform to a new Java 17 with Spring Boot 3.2 and Spring Reactor Webflux frameworks.• Engineered and maintained libraries for Macy’s microservices, enhancing development efficiency and standardizing configurations across various projects.

Atlanta, Georgia, Us

• Spearheaded the upgrade of the interactive voice helper backend to automate and enhance the Contact Center experience, resulting in a significant boost in customer engagement, utilizing Java, Spring Boot, Spring Reactor for reactive programming, Spring Security for OAuth 2.0, Python and Bash for pipelines, Concourse for CI/CD, HashiCorp Vault to keep secrets, Google Dialogflow ES and CX for Conversational AI, Google Cloud Datastore for configuration, BigQuery for analytics, Logging, VMs, GKE, and Cucumber with WireMock for API and integration testing.• Integrated automated testing stages into the release process, reducing bug occurrences by 80%.• Implemented SOCC flow for service-specific and location-based customer transfers.• Created SMS flow for customer text chats.• Introduced a Customer Survey feature to gather valuable feedback.

Atlanta, Georgia, Us

• Initiated tenure as a Contractor, focusing on improving testing and automation practices in a new Agile environment that led to a promotion to a permanent internal position.• Spearheaded digital transformation initiatives aimed at modernizing and streamlining Operations through the use of Java/Spring Boot microservices and DevOps technologies.• Deployment of Java/Spring Boot microservices to improve operational efficiency.• Implemented CI/CD pipelines using Jenkins for faster and more reliable software releases• Managed API documentation with Swagger to ensure smooth deployments and ease of use.• Leveraged Splunk for monitoring and analytics.• Established test processes and procedures tailored for projects at various stages, ranging from new development to minor changes, enhancing project efficiency and consistency.• Held decision-making authority to provide QA sign-offs for successfully tested applications or halt releases in case of critical issues.• Participated in project retrospectives, offering valuable lessons learned and suggesting improvements.

Zurich, Ch

• Spearheaded the successful migration of post-trade clearing and settlement functionalities for fixed income business lines (bonds, repo) from a mainframe to a new Java-based platform (Java, Spring, Hibernate).• Managed full lifecycle development process, from design to testing, utilizing the SCRUM Agile framework and TDD/BDD approaches with JUnit, AssertJ, Mockito, JBehave for BDD, Concordion for E2E tests to ensure robustness and scalability.• Successfully migrated mission-critical functionalities, reducing operational costs by 80% and improving system maintainability and speed to production by 300%.

• Designed and developed GPS and GLONASS receivers utilized for positioning, guidance, navigation, and timing.• Developed robust C/C++ firmware for professional navigation receivers, optimized for real-time operating systems.• Conducted low-level firmware testing to meet DO-178 aviation safety standards, ensuring product reliability andcompliance.• Performed pre-production validation of specialized ASIC chips to assure quality and functionality.• Automated test scenarios using the Cantata framework, increasing testing efficiency and reducing human error

Master'S Degree, Radioelectronic Systems

Postgraduate Diploma, Business Valuation