Technical Founder

    
Eliminated performance bottlenecks by decoupling parts of a monlithic Node.js application into a microservice architecture 
 
Led the team to further advance decoupling efforts and educated junior developers on infrastructure best practices 
 
Set up monitoring and alerting across the system, to improve awareness of production issues 
 

Contract Senior Software Developer/Architect 

    
This was a very unique and cross-functional position, where I got to act in different roles depending on the need of the business. The points below are organized by the type of role that I took on (Developer, Scrum Master, and DevOps). 

DEVELOPMENT 
Worked on an innovation team with the goal of decoupling the existing monolith application (Websphere, Java 7 EE, DB2) into microservices using Kafka queues 
 
Improved performance of Ethoca Alerts by redesigning one of the legacy data processing components to use Kafka Streams. Load on the DB2 database has been alleviated by using Kafka topics to persist state, and architecture has been greatly modernized by following the streaming paradigm. 
 
Implemented additional security features within the logic of our Kafka producers and consumers, to adhere to contractual security requirements imposed on the business.

DEVOPS 
Pioneered the company’s initiative of automating environment provisioning with Chef o Educated colleagues on best practices of infrastructure-as-code through demos and info sessions
Orchestrated Kafka cluster setup through Chef Provisioning 
Actively supported team members by resolving deployment issues after hours to accommodate important deadlines; in the process, uncovered and fixed bugs not caught by automation testing
Led team to use dedicated development environments on AWS EC2 instead of sharing an on-premise environment and conflicting with the work of other teams 

SCRUM MASTER 

As a Scrum Master, I conducted stand-ups, refinements, demos, retrospectives and sprint planning sessions as part of a 2-week sprint cadence 

Acted in both a DevOps and a Scrum Master role in a temporary team organized for 3 sprints to prepare infrastructure automation for a major release. 

Software Developer, Scrum Master, DevOps Specialist

    
Developed web UI components for IBM Customer Insights for Banking (React, Redux, ES6, Babel, Node.js) 

Additionally, researched improvements to the existing stack and experimented with React/redux integration in TypeScript and Scala.js 


Implemented security layer for the REST API for ICM Pulse with Spring Security to allow SAML 
authentication and OAuth authorization. 

Developed the login screens and collaborated with the team to deliver interactive reports, targeting the iPad (Swift, Objective-C, SQLite). Integrated an open-source OAuth client library in Objective-C. 

Developed REST API endpoints to replace existing WCF services on the server-side (ASP.NET Web API) 

Optimized filtering in a key-value store database to achieve higher speeds of report generation and better UI responsiveness 
 
Customized Telerik grid components to integrate with batched updates from the server to allow viewing partial results of a report while the rest of it is being generated by the backend (JavaScript) 

Implemented other major features such as support for using multiple data sources to allow clients to carry out predictive analysis (Windows Azure, SQL Azure, C#, ASP.NET MVC, Razor) 

Software Developer

(to be added later)

Experience provisioning, configuring and monitoring clustered systems (e.g. Kafka, Zookeeper, etc) and maintaining multi-tiered applications for scale and high availability from projects in FinTech and public sector. Fluent both with VM-based deployment and containerized ones. My approach emphasizes infrastructure as code, and a security-first mindset.

Everything JVM - from a regular Spring-boot REST API setup, to novel frameworks built on Scala and Clojure, to legacy code maintenance under IBM WebSphere.

Implemented FinTech/banking applications' UI with React.js, and used React with and without Redux as my go-to front-end stack for all of my projects. Recent experience building specialized highly-interactive graphical applications with React.

Personal details

Kirill E.

Summary

Technical skills

Work Experience

Personal Projects