software engineer/developer

Serge Steshenko

** ***** ***** **., *******, ON, L4K 3H8 phone: 647-***-****, email: *****.*********@*****.***

Objective

Experienced software engineer with the expertise in designing and developing scalable enterprise systems. Adept in Java, C++, and modern backend frameworks, with a strong focus on performance, integration, and maintainability. Seeking a challenging position to contribute to high-impact, technology-driven solutions.

Summary of Qualifications

•Extensive experience in backend and full-stack development using Java, C++, Groovy

•Strong understanding and applying of multithreading, concurrent programming, and socket communication (TCP/IP, UDP)

•Proficient in enterprise-level frameworks: Spring Boot, Spring Framework, Hibernate, JPA, and Node.js

•Experience working with SQL and NoSQL databases including MySQL, PostgreSQL, MongoDB, Couchbase, and Sybase

•Background in Agile development environments with hands-on experience in Scrum processes, CI/CD, and DevOps

•Expertise in ETL processes, business intelligence, and data processing for high-volume applications

•Versatile across platforms with solid knowledge of both Windows and Linux/UNIX environments

•Highly advanced in design, implementation, and delivery MQ Services, RESTful APIs, and SOAP WebServices.

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Technical Skills

Languages: Java, Groovy, C++, SQL, XML, JSON

Frameworks & Libraries: Spring, Spring Boot, Hibernate, JPA, Node.js, Apache CXF, JUnit, Mockito

Databases: MySQL, PostgreSQL, MongoDB, Couchbase, Sybase

Web Services: REST, SOAP, WSDL, MQ Services, RabbitMQ

Tools & Platforms: JIRA, Postman, Git, Swagger, Jenkins, Maven, Veracode, Azure Datadog, Splunk, Dynatrace, WinSCP

Other: Multithreading, Copilot, SonarCube, ServiceNow, Agile/Scrum, CI/CD, ETL, Performance Tuning

Professional Experience

TD Bank, Secure Consumer Credit, Toronto, ON

Senior Software Engineer (Java) 05/2018 – 07/2025

•Designed and maintained a suite of credit and compliance APIs using Spring Boot.

•Led vulnerability remediation using Veracode, and ensured systems complied with enterprise security standards

•Migrated WSDL into Spring Framework to originate Web SOAP clients

•Collaborated across Agile teams using JIRA and Confluence for documentation and backlog tracking

•Implemented and delivered Title Insurer(TINS) - MS Azure, RESTful API, Salesforce Platform, Spring Boo (jar exec) (Migration of IBM DataPower)

•Implemented and delivered Solicitor Instructions(SOLIN) - VMC2, MQ Services, Spring Boot(jar exec) (Migration of IBM DataPower)

•Implemented and delivered HOJ Notifications(HOJNO) - OpenStack, Jboss 7, MQ Services + RESTful .API, SpringBoot - transferred to Mule Framework Team (Migration of IBM DataPower)

•Implemented the migration of Credit Security Library (from Struts to Spring MVC) to VMC2, JBoss 8, JDK 17 including JUnit Tests.

•Coordinated and integrated the work with the vendors (FCT, LDD, Telus)

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Thales Rail Signalling Solutions, Toronto, ON

Software Analyst (C++) 02/2015 – 11/2017

•Developed low-latency server applications and simulation tools for the London Underground modernization

•Built C++ modules for the System Management Centre (SMC) and created custom UI components

•Integrated data feeds and maintained inter-service communication layers in a distributed system

•Contributed to large-scale documentation efforts and functional requirement implementation using DOORS

MediResource, Toronto, ON

Java Developer (Contract) 05/2014 -12/2014

•Built backend components for a digital health recommendation engine using Java and Groovy

•Integrated external partner platforms via SOAP and REST services; enhanced CMS capabilities

•Worked with MongoDB and MySQL databases to manage user and content data efficiently

Teranet, Toronto, ON

Senior Developer (Contract, C++) 05/2013 - 12/2013

•Developed validation tools and audit services for image processing within the Teraview system

•Migrated enterprise services to newer application servers (JBoss) and optimized system performance

Naalium, Toronto, ON

Senior Developer (Contract, Groovy) 02/2013 - 03/2013

•Built an ETL pipeline for real-time application performance data and visualized metrics in web dashboards

•Transformed XML/JSON feeds and integrated charts using FusionCharts and JFreeChart frameworks

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GANZ, Toronto, ON

Software Developer (Java, Node,js) 02/2011 –12/ 2012

•Developed backend infrastructure for MMO gaming platforms including user authentication and analytics

•Built scalable services using Node.js, Couchbase, and PostgreSQL

•Implemented business logic and middleware layers supporting various in-game features

Lexmark International, Lexington, KY

Software Engineer (Java, Groovy, C++) 04/2003 – 12/2010

•Developed printer management solutions for enterprise systems handling thousands of devices

•Designed components for device discovery, configuration, and security alert services

•Applied Agile practices including test-driven development, continuous integration, and sprint planning

Education

Kharkov State University, Ukraine

M.S. in Applied Mathematics and Nuclear Physics

Faculty of Physics and Technology

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