mshykhov

Cloud Services Marketplace / Platform Engineering - Designed and implemented a centralized roles & permissions management system, replacing a fragmented Terraform/CI pipeline with a unified solution - cross-environment visibility, audit trail, and self-service for admins - Drove Spring 6 migration of the monolith - javax to jakarta namespaces, Spring 5.3 to 6.x / Security 6.x / Data 3.x upgrades across 15+ modules - Contributed to the RBAC-to-FGA authorization migration - Auth0 resource-server provisioning across all environments, permissions back-sync, legacy cleanup - Resolved critical production bugs in role management - missing permissions, broken propagation, and a platform-wide user-system permissions mismatch - Provided cross-team platform support - code reviews and backend enablement for product teams Stack: Kotlin, Java, Spring Boot, Axon Framework, MongoDB, OpenFGA, Auth0, Terraform, Kafka, AWS, Docker, Kubernetes, Honeycomb, ArgoCD, GitHub Actions

Cloud Services Marketplace / Mobile BFF - Owned the BFF layer end-to-end - 40+ endpoints, 8+ downstream microservices, serving iOS & Android clients - Reduced API response latency by ~40% through parallel execution of downstream service calls - Introduced consumer-driven contract testing (PactFlow) across BFF, mobile clients, and microservices - full endpoint coverage, preventing breaking changes from reaching production - Architected and documented the API versioning strategy, enabling backward-compatible biweekly releases - Led the Java 17 to 21 migration and the OAuth2 resource-server auth migration - Integrated YouTube as an external content provider into the mobile platform Stack: Kotlin, Java, Spring Boot, REST, OpenAPI, OpenSearch, PactFlow, Honeycomb, Docker, Kubernetes, ArgoCD, GitHub Actions

Global Restaurant Booking Platform - Reduced manual accounting workload by 70% within the first year by automating the end-to-end invoicing pipeline - generation, delivery, payment reminders, and order-payment reconciliation - Migrated a legacy invoicing system (10+ Python scripts & Excel) into a production-grade Kotlin microservice processing thousands of invoices monthly across 17,000+ restaurant partners in 12 countries - Integrated Salesforce CRM via REST API, replacing scattered automation scripts with reliable service-to-service data sync - Implemented async processing with Kotlin Coroutines for high-volume reconciliation and reporting workloads - Built financial reporting modules on BigQuery, replacing manual Excel workflows Stack: Kotlin, Java, Spring Boot, Kotlin Coroutines, PostgreSQL, BigQuery, Redis, Salesforce, Docker, GCP, Kubernetes, Jenkins

Outsourcing / Data Extraction & Automation - Delivered 3 production projects end-to-end - from architecture to AWS deployment - Developed a hybrid web scraping engine (Selenium + Jsoup) for large-scale business-data extraction across 50+ target sources - Built an automated news aggregation pipeline - 8+ sources, scheduled collection, PDF & Google Sheets export - Designed an event-driven Discord automation service with configurable moderation rules and persistent audit logging Stack: Java, Spring Boot, Liquibase, PostgreSQL, Selenium, Jsoup, Docker, AWS (EC2, RDS), Bitbucket Pipelines