Alex Sergeyev Email & Phone Number

Solna, Se

Stockholm, Stockholm County, Se

As a Senior Technical Lead, I oversaw the evaluation of IT risks, the analysis of IT operations, and the recommendation of improvements for our Technical Due Diligence (TDD) projects. This included gathering and analyzing IT documentation, conducting staff interviews, and providing recommendations for improving IT governance, infrastructure, and technical capabilities. I also analyzed architecture, tech stacks, DevOps, and other IT aspects and wrote analytical TDD reports with recommendations.In addition, I contributed to improving our TDD framework and processes by identifying and implementing best practiceshttps://hiq.se/services/technical-due-diligence/

Stockholm, Stockholm County, Se

Conducted a comprehensive review of the client’s platform for scientific research publications and publisher agreement management. Developed a future-focused plan that included a new architectural design, necessary resources, and a timeline to unlock the platform’s potential, all to be achieved within three months.I led the development team to create a new Agreement Management platform version. This upgrade resulted in a tenfold reduction in Azure costs and significantly enhanced performance, reducing response times from 800ms to 40ms.

Philadelphia, Pa, Us

As an accomplished professional at Netronix, I spearheaded the growth of the R&D team from 3 to 10 developers and designed the architecture for the next-generation IoT platform and infrastructure.With my strong leadership skills, I led the development of the IoT platform, ensuring its performance, scalability, and security using REST, GraphQL, and Websocket Streaming APIs. I also managed project targets and validated processes for multiple teams while rolling out a CI/CD pipeline across all projects using GitHub Actions.My expertise in developing a time-series processing engine with support for aggregation, live data conversion, and multiple storages (Redis, MongoDB, PostgreSQL) and creating a new protobuf-based transport protocol for communication between devices and processing engine was a significant contribution to the company.In addition, I built a Lua SDK for controllers that allow data aggregation and remote management for devices using different protocols (UMB, Modbus, SDI12, etc.). I added support for over 200 various sensors using Lua SDK.To further enhance the infrastructure, I migrated all infrastructure to AWS and fully automated the deployment process with Terraform and Kubernetes/EKS. I also split the application into microservices (Ruby/Elixir) using NATS.io as a messaging broker to support peak processing of 1 million measurements per second.Finally, my experience designing a calibration process for (CO2/VOC/Temperature/Humidity) sensors and building a tool to calibrate sensors using Python and Machine Learning was a critical asset to the company.

Philadelphia, Pa, Us

Stockholm, Se

I successfully created an updated social media monitoring tool version that enables scaling to multiple nodes and can efficiently process approximately 1000 req/s from a single node.Moreover, I led the migration process of a Rails monolith application from an on-premise environment to the Heroku cloud. This migration resulted in a seamless and more efficient workflow, improving productivity and enhancing user experience.

Bergen, Hordaland, No

Media Archive Management software development/support http://www.vizrt.com/products/viz_ardome/(Perl, DB2, Oracle, Solr)

Mobile version of sportprofile.com (Android/iPhone/Opera)

Moscow, Ru

Development and implementation of mobile analytics software (pianalytics) for traffic and sales analysis for wap sites of major phone brands (wap.nokia.ru, wap.sonyericsson.ru)Software platform: PHP, Memcached, MySQL, SQL/PSMResults of implementation: the project enables processing up to 2 million requests/day and enables detection of new sales-points on these sites