Artem Alekseev Email & Phone Number

Berlin, De

Georgia

Stack: Go/PHP, PostgreSQL, ClickHouse, DWH, KubernatesAvito - the most visited classifieds site in the world (DAU 24.9kk). The company has 1300+ engineers and 100+ product teams.I worked in a microservices environment (3000+ microservices). I was in the platform core team, developed a platform for creating new types of profiles in “as a service” paradigm, and maintained existing services (rpm ~2kk).Developed a system of types for profile fields.- Allows creating new types based on basic types (string, number, list, structure) and applying different constraints (e.g., length limit or regexp matching, null check) by configs.- Reduced TTM for adding a new profile field from ~2 weeks to ~15 minutes.Load Testing- Conducted load testing of services to identify optimal service configurations for improving performance and reliability.Integrated flexible moderation for profile fields- Integrated a moderation system to support various data types across multiple datasets in different profile types.- Reduced TTM for connecting moderation for a new profile type/new profile fields from ~3 weeks to ~2 days. Information security- Created a threat model for unit services for further vulnerability audits.- Conducted vulnerability audits and risk assessments for services.- Created a checklist for grooming to check feature security.- Improved service security and team awareness about information security.Performed the role of technical on-call.- Resolved bugs that required immediate intervention.- Conducted research to solve bugs.- Increased test coverage of services.- Acted as L3 technical support.- Performed work to maintain SLI of services.

Kazakhstan

Stack: Java 11, RabbitMQ, Spring Boot, Spring Data, MongoDB, PostgreSQL, Redis, Junit, Mockito, Keycloak, AWS S3Worked in Gaskar Group (biggest IT-provider for real estate development companies), developed software for the construction sphere that streamlines communication and document management. Company size: 1000 people. Worked in microservice environment (40+ services). Started working inside core-team (internal tooling and resolving bottlenecks of other teams) then transitioned into working across nearly every service.- Acted as Tech Lead on payments service for contractors outside the company: domain expert, coordianted work of developers, kept track of deadlines, wrote documentation- As part of core-team made several improvments in tooling: - added request_id to rabbitmq messages for better logs observation and debugging - forwarded auth-header in rabbitmq messages - Setting up Grafana + Prometheus dashboards for better monitoring - Work directly with JMS (we use own lib for async communicate between services) - Introduced design first approach for communcation between backend and frontend teams via Swagger - Implemented from scratch auth microservice with JWT tokens, roles, permissions. It was gateway for all other services

Kazakhstan

- Key features on projects (billing, integrations, licensing, files storage, reports, deadlins monitoring): - Made comments synchronization from PDF TRON via webscokets and stored data in MongoDB - Implemented cron-jobs for notifactions about edits and comments - Made intergrations with goverment API using ETL pipelines

Dubai, United Arab Emirates

Stack: Java 8, internal-tooling, Docker, Kubernetes- Created high-load proxy servers aka rate limiters for different trading exchanges- Reversed-engineered API of new exchanges for the purpose of generating more revenue- Setting up Gitlab CI/CD pipelines from ground up, added step with static analyzer

Italy

Stack: Java 8, Alfresco, PostgreSQL, JS, Spring, Junit, Maven, Kafka, Cucumber- CRM-system for goverments and big croporations with 40-50k DAU- Collaborated with team members on offline EDS (electronic document management system) project using BPM Alfresco, contributing to the successful completion of the project- Optimized application build from ~**40 min** to ~**20 min.** I sped up Maven plugins by adding caching layer for file cnhages (similiar to git)- Intriduced BDD approach with Cucumber library in huge legacy monolith that allowed to implement testing. This approach leades to increasing x2.3 time-to-market and reduced number of bugs on 15%- Implemented business logic for notifications service using Kafka- Implemnted unified document generator for different formats (DOCX, pdf, csv, html)- Optimized report creating by using Freemarker instead Jasper Reports, that made easier the creation of reports for developers