Vladimir Dyuzhev

Things I Did (Excluding the Boring Day-to-Day Stuff)

1. Swagger Payload Validator

   Sep 2026

   Swagger Payload Validator

   A web/standalone application for validating API response payload against the service schema.

   • Greatly expedites verification of the expected vs. actual payloads during development.
   • Identifies not only hard-stop issues, but also warning signs.
   • Can be run locally, inside a corporate network, to exclude the risk of PII leaks.
2. LDAP Mock Service for Load Testing

   Aug 2026

   MockMotor

   Large telecom's load testing was limited by the capacity of the UAT LDAP service. Created a mock LDAP service that enables PROD-volume load tests and Black Friday readiness 3X tests.

   • Mock LDAP accounts are seeded as Excel spreadsheets.
   • Each release can have its own set of mock accounts.
   • LDAP response time and error rate are configurable from UI.
3. MCP Server for MockMotor

   Jun 2026

   MockMotor

   Enabled configuration of MockMotor environments, services, reactions and all other objects via MCP and API.

   • The built-in MCP server provides access to all MockMotor capabilities.
   • For MCP-restricted corporate environments, the API provides matching functionality.
   • The implementation and security layers are shared across the UI, MCP, and API modules, reducing the attack surface.
4. Kerberos Authentication PR for Kafka

   Sep 2025

   Bell Canada

   Fixed an issue in Kafka where a Kerberos ticket renewal could fail.

   • Works in Bell's PROD.
   • Only a year later :) the PR got accepted for merging.
5. WSDL Change Impact Tool

   Aug 2025

   WSDL Diff

   A web/standalone application for analyzing the WSDL/XSD change impact on existing consumers.

   • Identifies whether older clients violate the schema if not updated.
   • Can work with multiple WSDLs sharing XSDs at once.
   • Can be run locally, inside a corporate network, to exclude the risk of internal schema leaks.
6. MockMotor: Load-Test Mock Server

   Jun 2017

   MockMotor

   Load-Test Grade Mock Server for APIs

   • WSDL, REST, GraphQL and WebSockets APIs simulation.
   • Excel-seeded mock accounts.
   • Multi-environment support.
   • Horizontally scalable via JGroups cluster with encrypted communications.
   • Local, AD or OAuth users.
7. Easy Parallel Service for Oracle OSB

   Jan 2014

   GenericParallel

   A service for simple parallel task execution in Oracle OSB instead of cumbersome and error-prone Split-Join.

   • Works around many Split-Join limitations.
   • Declarative concurrency.
   • Policy-based error handling.
   • Built-in debug mode.
8. ESB (Oracle Service Bus, Java) Solutions Architect

   2012 – Still here

   Bell Canada

   Bell.ca ESB implementation — 200+ web services, 100+ backends.

   • Architected and implemented Oracle OSB-based ESB delivering data from backends and partner platforms to Bell applications.
   • Architected and implemented migration of composite services to standalone microservices (SpringBoot).
   • Guided team on use of forwarding mock services to shift the delivery dates left when the backends are not ready yet.
   • Supported performance team in running PROD-level load tests.
9. J2EE/SOA Consultant, Oracle BPEL

   May 2011 – Feb 2012

   Rogers Communications

   Technologies: Oracle WebLogic SOA Server, Service Bus and BPEL, JAX-WS, Ericsson TAS, SMSC, MMSC, and other provisioning platforms.

   • Performed full-cycle SOA development from data schemas to WSDLs to JAX-WS web services and BPEL processes.
   • Developed web service simulators to eliminate dependency on expensive provisioning test environments.
10. J2EE/SOA Lead Developer, Deployment and Automation

    Jan 2010 – Mar 2011

    CIBC

    Enterprise Customer Information System (ECIS) web services deployment automation.

    • Led deployment automation for a large-scale CIBC system — 50+ applications across Unix and HP NonStop HA platforms deployed to non-PROD and PROD on a scheduled basis.
    • Built a custom web service simulator to support testing.
11. J2EE Consultant

    May 2007 – Nov 2009

    Direct Energy

    Projects: TMS (Transaction Management), EBT (Electronic Business Transactions), GDAR (Gas Distribution Access Rules), NGSS/NOMAD (Settlements), SSO (Single Sign-On), KPI (Key Performance Indicators), RPT (Reporting Server), ESB planning.

    • Designed and implemented core applications and their corresponding web services.
12. Lead Developer / Advisory Application Developer

    2005 – 2007

    CIBC

    • Re-platforming of a legacy CORBA-based banking application onto an enterprise-standard J2EE and web-services stack.
13. Software Contractor

    2004 – 2005

    Bell Canada — IPWAN

    • Implemented a connector to Siebel API.
    • Built a Siebel emulator — a standalone Java web service — for Vitria/Siebel/BPM integration testing.
14. Developer

    1996 – 2004

    Various Contract Positions

    Projects: intranet applications suite, F-Secure plug-ins, OpenLDAP backend (plain C), PanMedix sport medical records management system (Oracle AS); UPCareOE/RefLab health care (JBoss), CORBA-based machine learning cluster (ACE/TAO).

Education

1. ITMO University, St.Petersburg, Russia

   1991 – 1996

   Microelectronics, Optical Design and Engineering.