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Social Network with Short VideosSoftware Architect
Apr. 2022 - Jan. 2024RemotelyStack: Golang, Postgres, Cockroachdb, NATS, FFMpeg, Kafka, k8s, Grafana Tempo; Loki; Mimir, k6, Redis.
- Developed a comment system featuring entity mentions in a geo-distributed platform (media, users, hashtags, etc.).
- Implemented a loyalty system allowing users to earn bonuses for reposts and actions on other social networks.
- Optimized main application performance, reducing instances from 20 with 4 CPU+8GB to 2 with 1 CPU+500MB, maintaining a load below 50\%.
- Engineered a Golang SDK for company teams, enhancing development speed and safety.
- Created Golang courses to facilitate migration from Python to Golang.
- Designed an internal tool for monitoring the state of Kubernetes applications.
- Generated Grafana dashboards and implemented auto-deployment on app deploy.
- Developed a service collecting likes/unlikes for various objects (posts, comments, users, etc.).
- Specified and created an SDK for data collection for analytics purposes.
- Implemented a proxy sidecar service handling general tasks for each service, including logging, metrics, auth, tracing, key-rotation, and RPS limits.
- Developed a service collecting reports about user interactions and views of our content.
- Introduced AK6 load testing tools with real-time integration with Grafana.
- Integrated Cassandra, NATS, CockroachDB, and FFMpeg, addressing issues with Kafka such as message loss and disk overflow.
- Led the implementation of leader election with K8s leases, utilized AWS KMS for all secrets, implemented health checks for services, and introduced tracing as a best practice.
- Developed a URL shortener with deep links and metrics, implemented soft updates, graceful shutdown, and graceful degradation practices, while also rewriting legacy code and simplifying APIs.
SoftProSoftware Architect
Mar. 2019 - Mar. 2022Москва, РоссияStack: Golang, Postgres, Kafka, RabbitMQ, Protobuf, k8s, Prometheus, Jaeger, gettext, Yandex.Tank, Allure, Redis, boltdb, ffmpeg, WebRTC.
- Service for predicting the outcome of sport competitions. NFR 25ms; 5k RPS; In-memory on-the-fly calculations.
- Backend for modern messenger with voice command recognition. Fast and responsive mobile application.
- Specialized apend-only storage with universal non-extandable protocol. Constant insertions, subscriptions, traffic-saving.
- Game engine to handle client requests, calculate game outcomes, and work in memory with constant SQL queries per request (1 query); Engine handles thousand of clients in a single tiny pod.
- Tools for automation of development processes. Tools for auto-merging and auto-linking between repositories.
- Built small Tier-4 (almost) datacenter with 400 devices with full redundancy.
- Code tools: custom linters, code generators, doc-generators.
- Visual recognition system which detects an objects in realtime on 60 FPS on Intel NUC.
- Hire and manage 30 developers.
AGIMATech Lead
Sep. 2018 - Dec. 2018Москва, РоссияStack: Golang, Python, Postgres, RabbitMQ, Protobuf, Redis.
- Hired and managed a team of 7 developers.
- Developed a system for Mercedes/Daimler dealerships audit. We managed more than 200 premium dealerships in Asia and CIS countries.
- Implemented an adaptive ACL which affects the UI and it`s actions. When some action is restricted for user - frontend is disable corresponding UI components automatically.
AGIMATech Lead
Nov. 2016 - Apr. 2018Москва, РоссияStack: Golang, Python, Postgres, RabbitMQ, Redis, k8s, Jenkins, SAP, SAS, Wifi scanner.
- Hire and managed a development team of 20 developers.
- Developed loyalty program for X5 Retail Group (largest Russian retailer). 800 supermarkets and 17.000 markets.
- Developed marketing tools for creating promotions, discounts, and personal offers.
- Implemented shopping list with suggestions, recommendations, shopping cart and delivery. Fast and scalable; network-saving protocol.
- Deployment time reduced by 70\% with CI/CD, auto-tests, and auto-document. Test coverage (by lines) increased from 7\% to 60\%; Auto-build readable documents for all endpoints.
SteamTradeSoftware Architect
Jan. 2016 - Nov. 2016Moscow, Russian FederationStack: Golang, Postgres, RethinkDB, leveldb.
- Reduced expenses by 50\% by optimizing the architecture and code.
- Reduced deployment time to 85\% by introducing CI/CD.
- Developed a system to collect statistics from cybersport games (CS:GO, LoL). More than 100 GB of data per day.
- Added Docker, Prometheus, Grafana, ELK, Sentry. This allow team to fast explain problems with instances and speed up development process.
- The project was moved to SOA. Nine services were added.
- Reverse engineering of a proprietary protocol.
DeliviaSoftware Developer
Mar. 2015 - Dec. 2015Moscow, Russian FederationStack: Python, Postgres, RabbitMQ, MongoDB, Alembic, Thrift.
- Added CI/CD, Docker, Docker-Registry, Ansible, Python-Registry, Alembic, Thrift.
- Developed a report service that can render reports in the following formats: JSON, XML, PDF, Excel, Word, HTML. This allow to our customers to choose format.
- A system was developed to speed up customs clearance. 30\% of parcels made between Russia and China use this system.
- 15 integrations with courier services. Developed a universal system for integration with courier services.
- Created a framework for construction of internal services. This speed up development process and make sure, that developer does not write duplicated code.
Game-Cafe LLCTech Lead
Sep. 2014 - Mar. 2015МоскваStack: Golang, Postgres.
- Developed a system for monitoring game servers (CS:GO, Dota, Minecraft). The system was able to monitor all game servers around the world.
- Developed a UDP server with a special protocol for choosing the best game server. 12k RPS.
- Decreased costs on CDN servers by 1300\% by creating a CDN for big files on top of the BitTorrent network.
- A factory management process system was developed to track the entire process from warehouse to end product.
- Created a game launcher similar to Steam. Auto-update, installation wizard, cross-platform.
- Created banner network with personal advertisements based on user profiles. About 80 partners; 75k MAU.
Pet ProjectTech Lead
May. 2014 - Mar. 2018Москва, РоссияStack: Golang, Python, Java, Postgres, RabbitMQ, Cassandra, MongoDB, Ansible, boltdb.
- Developed a system to continuously track the reputation of private companies.
- Developed an indexing system for internet resources. Indexed more than 10k popular websites and services.
- An alert system that notifies the company when it is frequently mentioned negatively.
- A subsystem was designed to schedule requests to remote servers, as well as to detect loops and network restrictions. This allows to bypass many problems especially on a large scale.
- A system was developed to draw users' attention to specific products or companies. When a topic isn't being discussed, the bot starts a new one to force the discussion.
ShoppyBoomSoftware Developer
Dec. 2013 - Sep. 2014МоскваStack: Python, Postgres.
- The Yandex Market Files are about ten gigabytes in size; the memory usage is constant.
- Developed the search index for a product with inaccurate search. There are more than 5 million products in the index.
- Integrate CRM, social networks, notification systems, payment systems, and delivery systems.
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