Cole Hayden
Chicago
Overview
8
8
years of professional experience
Work History
Senior Software Engineer
Lazer Logistics (EQT Private Equity)
01.2023 - Current
- First engineering hire brought in after EQT acquired Lazer Logistics (75th-largest U.S. logistics company). Led development of a greenfield SaaS Yard Management System (YMS) using C#, .NET, PostgreSQL, Angular, Azure, and a microservices architecture with CQRS + Clean Architecture.
- Architected and delivered core enterprise YMS functionality: real-time trailer tracking (RFID, GPS, machine vision inputs), dock scheduling, gate workflows, yard-driver task automation, KPIs/analytics dashboards, and integrations with WMS/ERP systems via domain events and external service processors.
- Built API foundations using FastEndpoints, API versioning, SignalR WebSocket hubs, middleware pipelines, and MediatR commands/queries with FluentValidation and custom pipeline behaviors.
- Solved critical cross-database latency and connectivity failures between two enterprise DB systems. Delivered a stable, high-throughput communication layer with DevOps, QA, and senior developers.
- Designed and implemented SendGrid/Twilio communication flows, Azure API Management policies, and Azure Workbooks/monitoring dashboards for observability, logging, and SLA tracking.
- Improved high-traffic query performance via database indexing strategies, read-model optimizations, and CQRS projections, dramatically reducing operational screen latency.
- Delivered full-stack features in the Sites microservice, modeling Sites, Locations, DockGroups, Clients, SCAC Codes, time zones, geospatial viewports (NE/SW coordinates), hierarchical locations, business units, and domain-driven business rules.
- Created infrastructure components: EF Core migrations, repository layer, background hosted services, value-object modeling, Azure Functions processors, and domain event handlers (e.g., dockGroupCreated → TaskOps).
- Established engineering standards through Playwright/Jasmine testing, architecture tests, rigorous PR reviews, and Clean Architecture enforcement across microservices.
- Platform stability and scalability contributed to doubling the number of business units and enterprise customer sites supported by the YMS within one year.
Software Engineer II
Daugherty Business Solutions
03.2021 - 01.2024
- Built and maintained multiple full-stack applications using React/TypeScript, C#, .NET Core, ASP.NET Web API, SQL, Jest, Dapper, EF Core, Swagger, and GraphQL for agriculture research workflows (ginning analysis, genome processing, breeding modernization).
- Delivered a major Cybersecurity Modernization project for Bayer, reaching 100% compliance with federal/government requirements using Azure AD, PAPI, Splunk, Serilog, and Ocelot API Gateway.
- Modernized Cigna’s legacy C++ pharmaceutical scheduling system into scalable C#/.NET Core, implementing async/multithreading, parallel processing, and SOLID principles, improving throughput and security.
- Raised automated test coverage to ~90% using xUnit, Moq, integration tests, and structured TDD practices.
- Modernized Home Depot’s internal equipment platform by converting legacy workloads to Microservices, Docker, and GKE, significantly reducing infrastructure spend.
- Built CI/CD pipelines with Jenkins and GitHub Actions, improving deployment reliability and incorporating linting, SonarQube scanning, Docker builds, and Cloud Foundry deploys.
- Integrated and configured SonarQube, resolving 100% of blocker/critical/major issues, improving audit readiness and maintainability.
- Maintained Bayer’s Android Scanmaster app (Kotlin/Java), resolving breaking API changes, tech debt, and functional issues with JUnit/Espresso.
- Delivered a greenfield Kotlin app (“Random Coffee”) using AWS Amplify, Jetpack Compose, API integrations, and unit/UI testing.
Software Engineer
Newmark
03.2019 - 03.2021
- Developed full-stack features for Newmark's commercial real estate SaaS platform using React, JavaScript, Sencha, MariaDB, Node.js, Core Java, Spring, Hibernate, SQL, and JUnit/Selenium.
- Built APIs and UI layers enhancing modules for compliance, asset management, building operations, preventative maintenance, and space planning.
- Served as lead developer for Discover, independently delivering features and generating new revenue by proposing and implementing custom solutions.
- Supported Archibus and Maximo teams by resolving JIRA tickets, stabilizing legacy features, and optimizing SQL queries.
- Only engineer contributing to three of four SaaS products, demonstrating adaptability and broad skill coverage.
Developer
Palmer Consulting
07.2018 - 03.2019
- Created and modified enterprise SQL solutions using Oracle PL/SQL, writing packages, triggers, stored procedures, views, and optimized queries for large production systems.
- Delivered all SOWs ahead of schedule, generating significant revenue and strengthening client relationships.
- Built Business Intelligence dashboards using Power BI and SQL, collaborating with senior DBAs to model enterprise-scale data structures.
- Enhanced ERP workflows by integrating large datasets and connecting complex back-end logic to front-end client requests.
Android Developer
Rand McNally
03.2018 - 06.2018
- Developed the Speech Recorder Android app (Java), delivering full production functionality for audio waveform testing in trucking environments.
- Reduced Road Atlas map download time 27% through performance tuning and Clean Code refactoring.
- Enhanced Notes app features (SQLite, file transfer) and fixed defects in the RV balancing tool.
- Customized Android UI layers to meet hardware-specific requirements for fleet devices.
Education
Bachelor of Science - Information Technology
University of Missouri
Columbia, MOSkills
Languages & Frameworks:
C#, NET Core, ASPNET Web API, Java, Spring Boot, React, Angular, TypeScript, JavaScript, Kotlin, Python, Nodejs, GraphQL, Dapper, Entity Framework, Hibernate, Sencha, Jest, xUnit, Moq, JUnit, Selenium, Playwright, Jasmine
Architecture & Patterns:
Microservices, Clean Architecture, CQRS, DDD, Event-Driven Architecture, SOLID, TDD/BDD, REST APIs, WebSockets, SignalR, MediatR, Domain Events, Repository Pattern
Cloud & DevOps:
Azure, AWS Amplify, Azure API Management, Azure Workbooks, GKE, Docker, Cloud Foundry, Jenkins, GitHub Actions, Azure DevOps, CI/CD pipelines, SonarQube, Splunk, Serilog
Databases:
PostgreSQL, SQL Server, Oracle PL/SQL, MariaDB, SQLite
Tools & Platforms:
Git, Postman, Swagger, Terraform (if applicable), Power BI, SSRS
Timeline
Senior Software Engineer
Lazer Logistics (EQT Private Equity)
01.2023 - Current
Software Engineer II
Daugherty Business Solutions
03.2021 - 01.2024
Software Engineer
Newmark
03.2019 - 03.2021
Developer
Palmer Consulting
07.2018 - 03.2019
Android Developer
Rand McNally
03.2018 - 06.2018
Bachelor of Science - Information Technology
University of Missouri