Aleksei Chukhleb Email & Phone Number

Cyprus

Affise Mobile Attribution project exists as part of the main product, I joined the project 10 months after its launch1. Stabilization services in a short time of the highload part of the project, microservices (9) on Golang - the number of alerts from 40 per day to 0, data loss during peak loads is fixed.2. Reworking the architecture of the highloaded part of the project, in parallel with the implementation of new business tasks, as a result of which the time to add new functionality was reduced by 3-5 times.3. Reworking of the storage system (Scylla(Cassandra), Clickhouse) for the current business requirements, it was also possible to provide for several subsequent business features that require significant changes in storage, without additional information from the business.4. Refactoring of the reporting system, elimination of accumulated technical debt, transferring the remaining business logic from frontend to backend, the time for generating data for reports was reduced from 8-20 seconds to 400 milliseconds5. Implementation and debugging of new business features6. Interaction with marketing and direct customers to refine business and technical functional requirements7. Maintain and control project documentationAffiseReach project - a separate project within the main product, designed for a different market segment1. Architecture design and development of the loaded part of the system(1 million rps in MVP)2. Microservices (15) in Golang connected via gRPC / NSQ (queue).3. Working with PostgreSQL, Scylla(Cassandra), MongoDB, Clickhouse databases

Developing microservices on golang.Designing microservices architecture.Using gRPC / kafka for communication between microservices.Interaction with partners on the technical side.Launch of significant services of the main project of the company.Participation in the development of the system architecture.

Device development using company development radio channel (NBFi):1.gas meter - integration with an external manufacturer (software C51)2.Hatch opening sensor (software C51, maintenance and debugging of electronics)3.electricity meters - the entire line (software efm32 - support for the old, stm32L1 - new development, maintenance and debugging of electronics)In the electricity meter:resource use: software without operating systems, RAM ~ 85%, FLASH ~ 90%,functional features: quality indicators according to GOST (with a restriction on the meter),the ability to update software, collect data in the amount of SPODES / DLMS and a transparent DLMS channel through the LPWAN Base Station, by close radio communication, optical port / 485Related software:1) Software for diagnostics, repair, manual calibration by close radio communication, optical port (Qt)2) auto-calibration / check of all nodes (goal: to reduce the cost of jobs as much as possible and speed up the process, operator participation is minimal) (Qt)3) software for flashing / allocating serial numbers (Qt + web server is the last, my only algorithms) of all devices of the company, integration with the technical process of other companies4) management of the production server development - maximum automation of production / repair / guarantees / shipments with statistics and salaries5) server for access to readings / control of electricity meters (Qt + js), integration with customer collection systems (Pyramid-networks, telescope, Vaviot personal account)6) web interface for access to additional functionality of the server / USPD during commissioning (js, jquery)7) device configurator (golang + vue)8) access to device data of opc ua (golang)Experience in system architecture development

Development of a multiprocessor real-time audio processing system:- development of interprocessor communication exchange protocols- implementation of the HAL level of a multiprocessor (CortexM4, CortexM7, ARM A8) system- use of GSM communication channel- using a GUI without an OS on a microcontroller (CortexM7) for a modern AMOLED + touchscreen panel (MIPI DSI)Debug and custom software for PC on QT5:- system logging- analyzer of the interprocessor communication interface- automatic testing of the system and communication channel- end user GUIControl of the system architecture, functional and electrical circuit of the device.

Development of a data collection system from battery-operated GSM vibration sensors:- development of an exchange protocol between the server and sensors,- development of a collection server, client side: backend and frontend- development and automation of the process of testing and tuning sensors,- deployment and launch of the system.Writing software for sonar based on STM32F4 (ARM) and drivers for USB (Win):- completion of exchange protocols,- development of architecture and writing a program for STM32F4 using external interfaces: USB, SPI, UART,- development of the counterpart - drivers for USB (Win)- implementation in top-level data collection software- testingArchitectural changes in the software for collecting-storing-displaying data from sonars:- writing a technical project- development of exchange nodes between modules- development of database architecture (SQLite)- injection of scripts (ECMAScript) to speed up the implementation and debugging of new equipment

Development of programs for collecting data from measuring device.Displaying the current parameters of remote objects (counters and not only)Analysis of the received data.Monitoring system configuration and protection program.Online system updates.System testing and debugging.

Development of a control system and a graphical interface for a measuring device (reflectometer) (workstation - auto laboratory) for built-in Linux at Qt4.Development of the program, design and adjustment of the measuring device hardware (reflectometer) (pocket version). Research of a new method of reflectometry, a working device on a microcontroller has been developed with a measurement error of + -1 meter + -1%Analysis of the initial requirements, clarification of the tasks.Refinement of existing solutions.Analytics of the existing system in order to modernize it.Testing the finished system.https://www.eurostell.com/