I started working during the transformation of IT departments in several companies.Key activities included:- Implementing R&D approaches and tools- Assessing, defining, and decomposing tasks- Providing colleagues with consultations- Developing microservices using the NestJS framework (REST/GraphQL/Kafka)- Conducting code review- Writing documentation (from readme to service guides)- Describing architectural solutions using the c4 model and ADRMade architecture design and developed the app for interacting with Managed Kubernetes / Github API / Ceph RGW API / JFrog Artifactory and other services. Made integration API/UI with Keycloak.Conducted research and development for telemetry collection based on the OpenTelemetry standard.(traces, running through multiple applications: classic on JS, micro services on NestJS + SAP)Developed integration with SPARK InterfaxWas participated in all stages of SDLC processes: gathering requirements, planning, solution design, and development.Was involved in building CI pipelines based on Github Workflows.Technology stack:Kubernetes / Docker / Git / Monorepo / Trunk Based Development / MongoDB / SQL / Redis / Flux / GitHub Actions/Workflows / Kafka / Grafana / Jira / e2e / Jest / Sentry / Structurizr / VSCode / OpenTelemetry / GitHub Pages / RxJS / Keycloak / PrismaORM / Artifactory / Yarn workspaces

Development of a software complex- NodeJS (JS / TS): API for the Frontend part- Java: worked with Kafka, ElasticSearch, Redis, AWS resources- Frontend: worked with the team on the migration from AngularJS to ReactJSAlso did:- Logs/metrics research (ELK, Grafana)- Any kind of tests: manual / functional / regression / integration / smoke- Business requirements analysis- Building infrastructure architecture with cloud based on AWS- Preparation of ADR’s / wiki and other types of documentation- Team interaction (US / RU): tasks estimation, cross review, pair programming/troubleshooting, daily/retrospective/architecture/grooming meetings- On-duty: incidents troubleshooting (AWS/Kibana/Grafana), RCA describingTech StackDocker / k8s / ExpressJS / NestJS / Postgres / Redis / Kafka / RabbitMQ / Grafana / ELK / Filebeat / MobX / Jira / Scrum / Kanban / CI/CD / Jenkins / Argo / git / ECS / EC2 / RDS / DynamoDB / S3 / е2е selenium / nightwatch / jasmine / cypress / InteleJ IDEA / VSCode

HTML, CSS, JS/JQueryPHP / Yii2- CMS based on Yii2 framework (DDD + SOLID)- CMF Modx Revolution (some simple sites)- Typical projects (e-commerce, brand site, landings)- External devices control (lasertag game with microservers and others)- Created a system with parallel calculations for a bot that can perform actions in social networks in a parallel, using several accounts at the same time- 3-sites system for the doctor: Patient Cabinet (chat, webinars, and other stuff), Doctor Cabinet (managing content, view statistic, etc.) Sales Site (Yookassa & PayPal API, email mailings thread).- Custom integration with cash register
- etc..mailing system, bots for messengers and social networks, CRM systems, site parsers…MySQL / MongoDB- complex queries- queries/resources optimization“Modern JS”: React / ReactNative / NodeJSKnows how JS syntax was changed with the years, from prototypes to modules import and JS classes realisationUnderstand how JS / NodeJS / React works under the hoodUsed React Native / React Electron / NodeRED / NestJS + TS / MQTT stack for system that controls devices based on the esp8266 / esp32 microcontrollers (Radio elements soldering + Arduino).Used ReactJS / ExpressJS / AWS for the dedicated drone control systemAdditional from this period of work:- Can integrate any API (blockchain, social networks, exchanges, payment and other types of systems- Used Docker- Used Git- Acquainted with git-workflows and team development principles- Acquainted with testing principles- Acquainted with all popular OS, such as Windows / Linux (CentOS, Debian, Mint, Ubuntu, MacOS)- Have experience with RabbitMQ- Have experience with leading small development teams, mentoring- Know how to do reverse engineering of the mobile apps- Know patterns, can do large scale architectures- Know how to create devices and systems/networks any scale based on the microcontrollers- Understand general algorithms and data structures

- Participated in infrastructure / servers configuration processes in the beginning- Was controlling park of computers, containing ~30 machines (networks/software configuration, resolving general user problems)- In the free time did research of programming stuff