Playnautica is a new-established business unit in quick betting B2B space.As a leader of small team of experts I've managed to develop & deploy new concept business service app to try winning a new market in just 4 months. Managed all parts of project implementation, participated in strategical planning. Also did some work myself, handled developing scalable high-quality backend to create opportunity for rapid growth, scaling system up to 20m$ money turnover a day in one year.

Multi-language backend developer (Rust, Java, Kotlin, Node). Kubernetes, Terraform, Docker. Small team moving fast.

Work on mission-critical parts of Beamery SaaS. Ownership of core BE components. Reworking legacy parts to scale & satisfy company growth requirements. Designing next generation architecture.Bonus: Landed efficient internal E2E testing frameworkFrom 2021:Lead for performance testing together with Platform team.Technologies: Node.js, Typescript, Mongo, ElasticSearch, RabbitMQ, Kafka, Redis, Docker, Kubernetes, Terraform, some Go & Bash.

Joined pre-seed startup in cryptocurrency space as a consultant & core committer in a while. Developing MVP, planning, executing, running from bear with your hat burning - all the nice activities from early startup life. Startup failed eventually, but it was a good time.Node.js, Typescript, Mongo.

Working with internal infrastructure and reverse-engineering API for external services. Typescript. NDA.

Expasoft is a small company with a strong scientific basis and deep expertise in ML & Data Science. Joined team as a consultant in designing machine-learning based products and services, exploring new professional expertise around ML.Responsibilities: Managing and designing/implementing new scalable services, adopted for Azure and on-premise deployment. Working with data and training models, specifically image recognition via ConvNets and user behaviour predictions. Basic business analysis for data analysis tasks.Technologies: Python, Azure, PostgreSQL, Caffe, misc of in-house solutions

This position is covered with strict NDA, so no much details can be provided. Essential developing for all kinds of internal infrastructure services in banner system, Yandex core business. Dealing with legacy, moving things forward. Perl, bash, MySQL, true unix way.

Joined team as a consultant on Node.js backend development. Responsibilities: technical education for team members, workflow organisation, designing scalable architecture to maintain ~ 10k RPS load.Later joined team on regular basis as CakeStory project backend team lead. Responsibilities: coding, application architecture, client-server api design, requirements analytics, work- and deploy flow organisation, hiring, managing project team (up to 3 persons), planning sprint iterations, code review.After project was complete, delegated future development to the team, switched to internal infrastructure as a lead of backend development. Responsibilities: coordinating game and service projects, hiring again, managing services development (support applications, crashboard, internal CDN, logger infrastructure), including research on architectural topics, communicating with DevOps team, designing API.Used technologies: AWS, Node.js, Express, Koa, ES6, Ruby (mostly as script language), PostgreSQL, Memcached, Redis, RabbitMQ, Docker, Vagrant

Highload backend development for social games.Common overview: Ruby & Node.js backend development, server architecture & API design. Database design & caching scheme. Implementing server-side game logic. Integrating server with common social network APIs. Misc. utilities and administration tools for game servers. Servers setup && deploy tools configuration. Server stress-testing. Organizing continuous integration development cycle. TDD concept popularization.Together with colleague Introduced Node.js to the company, resulting in global technology change.Used technologies: Ruby, Sinatra, Node.js, PostgreSQL, Memcached, Redis

Mixed full-cycle development for web && mobile devices, mostly iOS. General experience with Objective-C, Ruby, Java and C++