🐍Denis Rybakov Email & Phone Number

Vilnius, Vilniaus, Lithuania

As a Senior Software Engineer, I am dedicated to creating an environment of efficient knowledge sharing, effective onboarding, and continuous learning. My focus lies in mentoring team members, streamlining processes, and improving workflows within the Back-End, DevOps, and Data domains.𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬 & 𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬:• Conduct technical interviews for positions up to Senior level in Back-End, DevOps, and Data domains• Establish and maintain an efficient knowledge-sharing workflow by distributing tasks, conducting pair programming sessions, and organizing regular sync-ups• Introduced and organized a weekly hackathon ceremony, allowing the team to focus on new projects, improve development workflows, and explore innovative ideas apart from regular tasks

Vilnius, Vilniaus, Lithuania

The product streamlined HR processes by providing easy access to company resources and policies, managed global compliance, and facilitated the onboarding flow of new employees. As a software engineer, my responsibilities included the development and maintenance of multiple microservices, with the main focus on the Knowledge Base.𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬:• Develop and support microservices using Python, AIOHTTP, PostgreSQL, Docker, Ansible• Design RESTful microservices API and inter-service communication protocols using HTTP• DevOps: deploy and support application in stages, manage DB migrations• Team Lead activities: onboarding, knowledge sharing, facilitate Scrum ceremonies𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬:• Improved code quality adding quality gates: Mypy, Flake8• Refactored code and updated documentation to reduce technical debt• As the result of my activities, annual service stability increased from 99.0% to 99.9%

The product is an end-to-end auto e-commerce platform transforming the used car industry with a technology-driven, hassle-free customer experience. My job as a software engineer was the development of the lender service from the ground up, which calculates vehicle prices for lease depending on multiple factors, such as the individual's credit score or the vehicle's condition.𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬:• Develop microservice using Python, FastAPI, AIOHTTP, DynamoDB, Docker, K8s• Design and build API and inter/outer-service communication protocols using HTTP and gRPC• DevOps: create CI/CD using GitHub Actions • QA: Perform end-to-end testing in AWS environment𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬:• Optimized communication between services using batching• Sped up test's runtime by 44% through fixture optimization• Streamlined development standards by creating contribution specification• As the result of my activities certain API endpoints response time reduced from 800ms to 200ms

The product assists in parsing and extracting information from various sources such as texts, tables, molecules, graphs, and images found in multiple document formats, primarily PDFs. It then stores this information for future search purposes. As a software engineer, my main responsibility involved developing distributed pipeline services that represented ML pipelines, facilitating the creation of comprehensive workflows.𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬:• Develop microservices from the ground up using Python, FastAPI, AIOHTTP, SQLAlchemy, PostgreSQL, Minio, Keycloak, Docker, K8s• Design and build API and interservice communication protocols using HTTP• DevOps: create CI/CD using GitHub Actions• Onboarding and knowledge sharing𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬:• Transferred project from GitLab to GitHub• Unified CI/CD & Quality Gates• Unified microservices build tools to Poetry• Rewrote slow sync communications to AIOHTTP and AsyncIO• Created contribution documentation to streamline development standards𝘕𝘰𝘸𝘢𝘥𝘢𝘺𝘴 𝘪𝘴 𝘢𝘯 𝘰𝘱𝘦𝘯-𝘴𝘰𝘶𝘳𝘤𝘦 𝘱𝘳𝘰𝘫𝘦𝘤𝘵 𝘢𝘵 𝘨𝘪𝘵𝘩𝘶𝘣.𝘤𝘰𝘮/𝘦𝘱𝘢𝘮/𝘣𝘢𝘥𝘨𝘦𝘳𝘥𝘰𝘤