Peter Bagrij

My achievements and responsibilities in this project involved:
• Creating the solution architecture document, collecting functional and non-functional requirements and constraints
• Building low-level designs of multiple components, including story breakdown and estimates
• Creating the initial version of the project plan
• Supporting the customer in cloud vendor and development partner selection by presenting the architecture and evaluating responses to requests for proposals
• Conducting more than 50 team fit interviews, ramping up a team with eight developers
• Scrum master and technical lead for the team, facilitating all kinds of meetings, such as standup, grooming, planning, and retrospective

Relevant project dimensions:
• Estimated storage capacity of around 60PB
• Ingestion shall be able to process about 2,000 channels
• Estimated egress peak is approximately 75GB per second

My key achievements and responsibilities in this project involved:
• Facilitating the discovery of the project, then creating the initial solution architecture document and the work breakdown structure (WBS) of a web application that helps design sites where IoT devices are going for deployment
• Assessing the application architecture, creating an initial plan to remove scalability-related bottlenecks to support 100-thousand devices deployments
• Creating a design that helps migrate the functionality of one of the core components written in Clojure, thus hard to maintain and not fulfilling the scalability goals
• Designing a serverless firmware update (FOTA) solution for the new generation of lighting devices
• Overseeing the migration from a self-hosted service to cloud managed services—LDAP -> AWS Cognito, DC/OS -> AWS EKS, Eclipse Mosquitto -> AWS IoT Core
• Creating low-level designs and supporting the team in implementing numerous business features, such as seven days retention, diagnostic API, energy report, auto fixture calibration, and group move
• Working with a team of 30 to 50 developers

My achievements and responsibilities in this project involved:
• Initial discovery with the customer, creating feature and story breakdown for MVP
• Creating the initial architecture of the application
• Designing the data model and integrating with upstream services created with XML Schema
• Designing and implementing SSO using SAMLv2

My responsibilities and achievements in this project were:
• Stabilizing the platform by redesigning the service boundaries
• Decreasing the number of services from around 70 to about ten and fixing eventual consistency problems caused by command query responsibility segregation (CQRS)
• Implementing security enhancements, including two-factor authentication (2FA), two-way TLS, and encryption at rest
• Integrating with third parties, like the SMS gateway and hardware security module (HSM)
• Designing features, such as billing, prefill, auto push, connect-disconnect, GDPR
• Introducing distributed logging and tracing
• Creating technical documentation for the third-party audit
• Providing go-live support
• Working with a team of 25 to 40 developers

An event-driven microservices-based application for processing lifecycle events for structured products.

My achievements and responsibilities involved:
• Building three teams after conducting around 100 team-fit interviews
• Acting as a technical lead and scrum master of two teams involving 10 to 15 developers
• Designing, implementing, reviewing, releasing, and supporting numerous features
• Integrating with a couple of third party systems

Designed and implemented a web-based flexible CRM system using jBPM as a workflow management system. The project aimed to manage opportunities, businesses, and providers for airport catering services.