Alex Segeyev

As the Technical Lead/PO Cloud Foundation at Postnord, I drive strategy and operational excellence for our cloud infrastructure, leveraging AWS and Azure platforms. My responsibilities include:

• Optimizing cloud architecture to decentralize processes and enhance DevOps culture among teams.
• Building a FinOps culture and leading cost optimization sessions with teams.
• Streamlining and automating onboarding processes to accelerate the integration of new teams and projects.
• Collaborating with cross-functional teams to align cloud strategies with business objectives.
• Establishing robust security guardrails and continuously enhancing security and compliance across cloud operations.

As the Senior Technical Lead at HiQ, my primary duties include conducting Technical Due Diligence (TDD) projects involving comprehensive IT risk evaluations and operational analysis. In this role, I:

• Gather and analyze extensive IT documentation
• Conduct interviews with key IT personnel
• Develop recommendations for enhancing IT governance, infrastructure, and technical capabilities
• Perform detailed architectural, tech stack, and DevOps analyses
• Create analytical TDD reports with strategic improvement suggestions
• Keep our TDD up-to-date by identifying and integrating best industry practices

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.

• Tech Stack: MongoDB Atlas Search, Ruby, ReactJS, Azure Cloud Services, Azure Static Websites, GitHub Actions, Terraform, Auth0

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.

• Tech Stack: Azure SQL, Azure Cloud Services, MDriven low-code platform

I completed a comprehensive security assessment of the client’s platform, examining key areas such as architecture, infrastructure, and code. Identified and mitigated potential security risks by enhancing platform security through IaaC (Terraform) and incorporating security best practices into CI/CD pipelines.

• Tech Stack: Google Cloud Platform, Cloud SQL, Cloud Run, Cloud Build, Cloudflare, NodeJS, Prisma, GrapthQL

Designed an architecture for an IoT platform merging two different IoT stacks into a single platform. Evaluated code and infrastructure to identify potential bottlenecks and provided a development plan for the new team.

• Tech Stack: Kubernetes, Rancher, MongoDB, Node.js, Apache Kafka, API Gateway, IoT Architecture, Redis, Microservice Architecture, Event Driven Architecture

Performed Technical Due Diligence for an iPaaS, thoroughly reviewing the platform’s architecture, scalability, technology stack, infrastructure, and security.

• Tech Stack: Azure, Azure Functions, Azure Service Bus, Azure SQL

Reduced AWS expenses by enhancing the observability of the client’s IoT platform. Reviewed the AWS infrastructure and reconstructed it using Terraform. Discovered several issues and implemented application code and infrastructure fixes, reducing monthly AWS expenses by $12,000.

• Tech Stack: AWS Kinesis Firehouse, AWS Redshift, AWS Glue, AWS Relational Database Service (RDS), AWS EKS, AWS Cloudwatch, Terraform

At Netronix, I grew the R&D team from 3 to 10 developers, built the architecture for a next-generation IoT platform and infrastructure, and organized development processes and cross-team communication.

• Led IoT platform development to ensure performance, scalability, and security.
• Managed project targets and validated processes for multiple teams.
• Rolled out CI/CD pipelines across projects using GitHub Actions.
• Designed REST, GraphQL, and WebSocket Streaming APIs for the IoT platform.
• Created a time-series processing engine with support for aggregation, live data conversion, and multiple storages (Redis, MongoDB, PostgreSQL).
• Developed a new protobuf protocol-based transport mechanism for device communication.
• Built a Lua SDK for controllers to enable data aggregation and remote device management across diverse protocols (UMB, Modbus, SDI12, etc.).
• Migrated infrastructure to AWS and automated deployments with Terraform and Kubernetes/EKS.
• Transitioned the application to microservices (Ruby/Elixir) using NATS.io for high-throughput messaging.
• Designed sensor calibration processes and built corresponding tools (Python/ML).

Tech Stack: Ruby, Elixir, OpenAPI Specification, GraphQL, Event Driven Architecture, Event Source, Redis, PostgreSQL, MongoDB, Docker, Terraform, Kubernetes, Helm, AWS API Gateway, AWS Elastic Compute Cloud (EC2), AWS Web Application Firewall (WAF), AWS CloudFront, CI/CD, TDD, Python, Pandas, SciPy, TensorFlow, LUA, Google Protocol Buffers (Protobuf), WebSocket, MQTT

As a Senior Software Engineer, I led initiatives including:

• Developing a novel social media monitoring tool capable of handling around 1000 requests per second.
• Successfully migrating a Ruby-on-Rails monolithic application from an on-premise solution to the Heroku cloud platform, ensuring business continuity.

Tech Stack: Ruby on Rails, REST, Elasticsearch, Apache Solr, Heroku, Event Driven Architecture, Redis, JavaScript, Nginx, Linux, PostgreSQL

Developed an IoT platform for monitoring and controlling multiple 3rd party sensors through web applications. The platform included:

• A device server communicating over 2G/3G networks.
• A processing engine converting sensor data to a unified format.
• A live and historical reporting backend.
• An alerting engine sending notifications via email/SMS based on user-defined conditions.
• A web application for device visualization and control.

Supported about 50 different 3rd party sensors with protocols such as Modbus, SDI12, UMB, and vendor-specific formats. Tech Stack: Ruby, JavaScript, Ruby on Rails, MySQL, AWS, AWS API Gateway, Redis, AWS S3, Nginx, Rest API

Debugged, refactored, and optimized backend services for the Media Archive Management platform used by multiple TV channels worldwide (TV6, SVT in Sweden). Tech Stack: Perl, DB2, Oracle, SVN, Linux

• Senior Developer, Qubator AB (Stockholm) – developed a mobile version of sportprofile.com
• Senior Developer/Project Lead, Lawline HB – built a website for the Swedish law-community at lawline.se

Created a platform to analyze traffic and content sales for mobile phones. Utilized on the WAP sites of Nokia and SonyEricsson in multiple countries, the platform processed around 2 million daily requests. Tech Stack: PHP, SQL, DRBD, MySQL, Git

• Developed and maintained a high-availability hosting platform for web/WAP applications using Debian GNU/Linux, heartbeat, OpenVZ, nginx/apache2, MySQL, DRB
• Designed and developed a video streaming platform for mobile phones (PHP/Perl, Darwin Streaming Server, VLC, ffmpeg)
• Contributed to several WAP applications (PHP/MySQL) and the design of a remote WAP billing platform.