Siarhei Kurachou

Customer: Avis Budget Group Project: Web 2 Modernization - Integration Team -Developed and maintained both RESTful and GraphQL APIs with Microservice Architecture. -Managed communication with several third-party teams responsible for sub-systems. -Participated in user session implementation focusing on security for user profile data and extra functionality for reservation. -Participated in request performance adjustments and forming goal response time, resulting in 20% improvement on average. -Participated in build workflow optimization resulting in DX improvements. -Maintained service integration for payments, email notifications and numerous domain specific ones (profile, reservation, location) on BFF layer. -Managed communication between QA, BA and Architects inside the integration team. -Maintained documentation for specific APIs and team processes. Tools and Technologies: Node.js, NestJS, RESTful, GraphQL, Copilot, AI, Grafana, BitBucket, Jira, Confluence, OpenAPI, apicurio, Concourse CI, Figma, Miro, Mosaic Transmit, AEM, Next.js

Customer: Vertex Inc Project: Tax Research Modernisation -Developed and maintained both RESTful and GraphQL APIs with Microservice Architecture. -Managed UI app refactoring and migration to TypeScript, resulting in reduced contribution times. -Managed inter and cross teams Communication applying Leadership and Problem Solving skills between Dev, DevOps, QA, Design and ML roles. -Conducted team-specific Demo sessions on Iteration results for customers in Scrum based manner. -Participated in UI integration with AWS CloudFront resulting in 50% reduction in load times. -Participated in Onboarding and Mentoring of new team members and general staff. -Participated in application analysis, including UX Heatmaps, Snyk Security vulnerability scans, application of RAIL model; resolving issues and establishing project checks. -Aided in migration to AWS AI services for NLP model for parsing articles. -Improved codebase applying Design Patterns like Dependency Injection Container and Separation of Concerns principles, providing better Maintainability. -Learned and applied in practice GraphDB concepts and SparQL for managing RDF ontotext storage. Tools and Technologies: SPARQL, Amazon S3, CloudFront, API Gateway, Cognito, Lambda, RDS, PostgreSQL, AWS, Copilot, AI, ReactJS, Node.js, Redux, TypeScript, Python, FastAPI, REST API, GraphQL, Jest, Ant Design, DataDog

Customers: HCL, IBM Projects: HCL Quattro, Traffik Analysis Hub, DRC Mixed Migration Monitoring, IBM.org -Developed and maintained RESTful APIs and Single Page App. -Applied caching and response compression resulting in improvement in response times. -Led a team of two developing projects from start to handover. -Owned dashboard site sections which include maps, diagrams, 3D graphs and embedded content. -Developed CI/CD pipeline from scratch for quality checks and deployment with messenger Alerts. -Developed system documentation for Onboarding, Design, Guides and Handover. -Developed email server methods and covered with tests relying on RFC specifications for IMAP, etc. - HCL Quattro only -Provided support for older browsers (IE11), improving audience coverage. - IBM.org only -Conducted Demo sessions on Iteration results for interest groups. -Participated in Onboarding and Interviewing of new team members. -Learned and applied in practice Cloud principals and Cloud Native approach with IBM Cloud setting up basic Continuous Integration and Deployment. Tools and Technologies: Node.js, Jira, TypeScript, Python 3, Django, MongoDB, GitHub, IBM Cloud, Docker, Kubernetes, Travis CI, Redux, D3.js, Mapbox, Material UI, React, Express.js, JavaScript, REST APIs, Angular, HTML, Next.js, GitLab