• Node.js ∙ Java ∙ C# ∙ C++ ∙ Python
• Spring Boot ∙ .NET Core ∙ Django
• Hibernate ∙ EF Core ∙ SQLAlchemy
• React ∙ Express ∙ Angular ∙ WPF
• Jest ∙ JUnit ∙ xUnit ∙ NUnit ∙ pytest
• Stryker ∙ PITest ∙ Mutmut ∙ Sharpfuzz
• pinojs ∙ log4j ∙ .NET Core Logging
• Python Logging ∙ New Relic ∙ Splunk

• Kafka ∙ RabbitMQ ∙ ActiveMQ ∙ ZeroMQ
• Postgres ∙ Oracle ∙ MySQL ∙ SQL Server
• FIX ∙ Sockets ∙ WCF ∙ REST ∙ gRPC
• Resilience4j ∙ Polly ∙ Simmy
• Maven ∙ Gradle ∙ NuGet ∙ make
• Jenkins ∙ GitHub Actions ∙ GitLab ∙ Travis
• code ∙ IntelliJ ∙ Visual Studio ∙ PyCharm
• Linux ∙ MacOS ∙ Windows ∙ Android ∙ iOS

• Done is better than perfect.
• Focus on Single Responsibility Principle.
• Push, integrate, deploy continuously.
• Deliver outcomes, not technology.
• Log carefully, yet liberally.
• Share experience with the organization.
• Continuously document the system.
• Be excellent in production support.

• DDD ∙ Microservices
• .NET 5 ∙ Vue.js
• S3 ∙ PostgreSQL ∙ RabbitMQ
• Polly: Resilience Framework
• AWS ECS ∙ Docker
• CircleCI Pipeline
• Unit ∙ Mutation ∙ Integration
• System ∙ Load Tests
• Logging ∙ Tracing ∙ Metrics

Upcoming sprints include:

• QuickBooks integration
• Migrate long-polling to WebSockets
• Migrate BLOBs to S3
• Expand custom templating

• DDD ∙ Microservices
• .NET 5 ∙ React Native
• .NET Blazor Server
• Kafka Message Broker
• Transactional Outbox Pattern
• Event Sourcing ∙ Event Store
• Polly: Resilience Framework
• Simmy: Chaos Engineering
• AWS ∙ K8s ∙ Docker ∙ Vault
• Jenkins CI/CD Pipeline
• Unit ∙ Mutation ∙ Integration
• System ∙ Load Tests
• Logging ∙ Tracing ∙ Metrics

Implemented API as well as consumers and producers for work assignment, organization, user, vehicle, inspection, and administration events.

Created team, domain, and infrastructure: repos, pipelines, clusters, databases, tools, metrix.

Implemented New Relic, Splunk, and Tableau integrations for data science and ML.

Extremely well-received data-driven mobile app used by vehicle inspectors.

Ingestion and transformation of large parts and labor data set from Mitchell.

Established and supported patterns, practices, and principles for the development team.

While not the largest project of mine, one of the top five I am proud of.

• DDD ∙ Microservices
• .NET 5 ∙ React
• SQL Server ∙ RabbitMQ
• F5 Load Balancer ∙ Docker
• Azure DevOps CI/CD
• Unit ∙ Mutation ∙ Integration
• System ∙ Load Tests
• Logging ∙ Tracing ∙ Metrics

Implemented workflow for all program actors, including: Division of Service Disabled Veteran Owned Businesses, NYS agencies, SDVOB and non-SDVOB Contractors, SFS. Previously these workflows were mostly paper-based.

• DDD ∙ Microservices
• Node.js ∙ Vue.js
• Kafka + Outbox Pattern
• Event Sourcing ∙ Blockchain
• AWS ∙ K8s ∙ Docker
• GitHub Actions CI/CD
• Unit ∙ Mutation ∙ Integration
• System ∙ Load Tests
• Logging ∙ Tracing ∙ Metrics

Advised board on all technical matters in the startup of the company.

Met with integrators and advised on buy vs. build options.

Discussed regulatory requirements with governmental representatives.

Established best practices for DDD, microservice pattern, testing, packaging, deployment, as well as logging, tracing, and metrics.

• DDD ∙ Microservices
• .NET 5 ∙ EF Core
• Kafka Message Broker
• Transactional Outbox Pattern
• Event Sourcing ∙ Event Store
• Polly: Resilience Framework
• Simmy: Chaos Engineering
• AWS ∙ K8s ∙ Docker
• Jenkins CI/CD Pipeline
• NuGet Package Publishing
• Unit ∙ Mutation ∙ Integration
• System ∙ Load Tests
• Logging ∙ Tracing ∙ Metrics
• dotnet Project Templates

Created frameworks for controllers, listeners, dispatchers, transactional messaging, sagas.

Created configuration service, feature flag service, identity service, gateway services.

Created capital financing architecture for floor-plan customers.

Created order service to migrate from legacy bill-of-sale module.

Created frameworks for unit testing, integration testing, mutation testing, service testing, load testing, resilience and chaos engineering.

Migrated architecture from .NET Core 2.2 to 3.1, and then to 5.

Created design patterns for DDD entities, primitive wrappers, DbContext.

Established best practices for logging, tracing, and metrics.

Provided guidance for teams on UI, design, testing, C#, .NET Core, tools, etc.

Established Jenkins CI/CD standards for .NET Core microservices.

Created open-source library of .NET Core logging providers.

Created dotnet-new project templates for all project types.

Sustained 100% branch and mutation coverage. Provided guidance to other teams on how to reach that level of code coverage.

• React ∙ React Native
• Nodejs ∙ Postgres
• AWS Cloud Native
• Jenkins CI/CD Pipeline
• Unit, Integration, Load Tests
• Managed 4 time zones

Created web and mobile UI for managing network subscription.

Designed AWS cloud native architecture.

Created Jenkins CI/CD pipeline, formal shift-left design.

Maintained 100% unit test coverage in most modules.

• SQL Server ∙ Azure ∙ Kestrel
• ASP.NET Core ∙ EF Core
• PayPal REST API
• Progressive Web App
• Aurelia ∙ Typescript∙ HTML5
• Lean Agile Development

Created model and framework for PayPal REST API (payments, refunds, payouts).

Created JSON Web Token framework, including OAuth caching.

Created views, controllers for presentation concerns.

• Oracle Database ∙ Red Hat
• SQL Server ∙ Windows
• Java Runtime ∙ .NET Runtime
• Sockets ∙ Remoting ∙ WCF
• ASP.NET MVC ∙ Javascript
• Java ∙ C# ∙ VB.NET ∙ C++
• MQ ∙ Custom Message Bus
• OnixS ∙ QuickFIX ∙ FIXML
• WPF ∙ WinForms ∙ DotNetBar
• ReSharper ∙ NUnit ∙ NCover
• log4net ∙ log4j ∙ log4js
• Jenkins ∙ CruiseControl.NET
• Maven ∙ bash ∙ NAnt ∙ PShell
• JIRA ∙ Confluence ∙ Bitbucket
• ClickOnce ∙ InstallAware
• Lean Agile Development

Created option pricing interface for order execution. Indicators include relative theoretical value, relative volatility, and pending cancellation.

Created FIX, REST, and raw secure sockets interfaces for external integration. Created persistent, shared-memory message cache supporting message replay. Created drop-copy, order fill, and clearing interfaces.

Created publish-subscribe message bus engine for decoupled event management. Created interfaces to various real-time market data feed providers.

Created architecture for unit, integration, acceptance, and stress processes. Created system frameworks (e.g., database, cryptography, messaging).

Created development practices (e.g. TDD, lean coding, SRP, and traceable code).

Created WPF and WinForms controls for analytics, modeling, and trading modules.

Created web apps for reporting and management services using ASP.NET MVC.

Lead member of multiple company-wide platforms: single sign-on, single launcher, standard front-end design and user experience specification.

Authored heavily followed wikis on Git techniques, Java and .NET architecture, and lean development patterns and practices.

• SQL Server 2000 ∙ Win2K3
• Java ∙ Swing ∙ Hibernate
• Eclipse ∙ JUnit ∙ Log4J
• CruiseControl ∙ JIRA

Implemented JIRA on LAMP stack. Developed JIRA services using Hibernate to integrate with existing change management systems.

• SQL Server 2000 ∙ Win2K3
• .NET Framework (C#)
• WinForms ∙ GDI+ ∙ DirectX
• .NET Remoting ∙ Interop
• .NET Web Services
• NAnt ∙ NUnit ∙ NDoc ∙ FxCop
• Scrum Agile Development

Product depended on hybrid distributed architecture for connected and disconnected operations. A classic over-architecture, the development process had slowed to a crawl. Promoted software pattern and practice improvements. Introduced agile software development practices, most notably test-driven development.

• Oracle 9i RAC ∙ Linux
• .NET Framework (C#)
• .NET Remoting ∙ Interop
• .NET Web Services
• NAnt ∙ NUnit ∙ NDoc ∙ FxCop
• Flash MX Remoting
• XP Agile Development

Developed framework: logging, caching, exception management, data management, context management, transaction management, distributed messaging, cryptography, performance analysis, and identity and profile management. Framework was adopted for common use by other EMC projects. Developed SOA façade for Flash Remoting.

• SQL Server 2000 ∙ Win2K
• .NET Framework (C#, C++)
• .NET Remoting ∙ Interop
• .NET CLR hosting
• NUnit ∙ NDoc ∙ Log4Net

Developed custom CLR host for extending assembly loader and type reflection. Developed XA-compliant transaction patterns. Developed extensible state machine in a remote singleton pattern. Used singleton instance publishing pattern to improve remoting performance.

• SQL Server 2000 ∙ Win2K
• .NET Framework (C#)
• Java ∙ Python
• WebLogic ∙ Apache Axis
• JMS ∙ JNI ∙ JNDI ∙ JDBC
• ClearCase ∙ ClearQuest

Developed Java multi-threaded context management. Developed JNI for PeopleSoft, SAP integration. Developed EAR delivery, versioning and dependency system in Python.

Developed .NET patterns to replace DNA architecture: Windows Forms, ASP.NET, ADO.NET, Windows Services, .NET Interop.

• SQL Server 2000 ∙ Win2K
• COM(+) ∙ ATL ∙ STL
• SOAP ∙ WSDL ∙ UDDI
• XML ∙ XSL ∙ XSLT ∙ XPath
• ADSI ∙ AD Extension
• ASP ∙ ISAPI ∙ SSL Auth
• Queued Components
• .NET Framework (C++)
• WMI Instrumentation
• Crypto API ∙ Kerberos API
• Locale API ∙ TMX Exchange
• InstallShield ∙ SQL DMO
• XP Agile Development

Developed ATL/STL adapters for IObjectControl, IObjectConstuct, ISupportErrorInfo, IStream. Developed XML Web Services using ISAPI extensions, listeners, type mappers, WSDL generator, and cryptographic key distribution.

Developed security context management (thread identity impersonation) using ISecurityBlanket and CryptoAPI. Developed type library wrappers for ASP, ADODB, MSXML, ActiveDS, MSMQ, BizTalk, and COM+. Developed components for localization, logging, exception handling, ADO.NET, and cryptography. Architected a migration from COM+ events to CLR delegate framework.

Developed web client, web service, and sockets interfaces. Developed ISAPI filter authentication (URL-safe tokens). Developed std::map based shared-memory cache for Kerberos TGT handles. Ported eXtreme framework to C++ for unit testing. Developed TMX translation services for localization.

Developed continuous-integration system for full-cycle deployment (dev, QA, staging, production). Designed clustered SQL Server, MSMQ and IIS farm. Designed replication for SQL Server and Active Directory. Deployed SSL accelerator for single and mutual certificate authentication. Developed WMI framework for component instrumentation (FinalConstruct, FinalRelease, Activate, Deactivate, exceptions).

• SQL Server 2000 ∙ Win2K
• COM ∙ MTS ∙ MSMQ
• ATL ∙ STL ∙ ASP ∙ ISAPI

• SQL Server 7 ∙ Windows NT
• Exchange Server 5.5
• COM ∙ MTS ∙ MSCS
• ATL ∙ STL ∙ ASP ∙ ISAPI

• Lotus Domino

• Oracle 8 ∙ Sun Solaris
• Windows NT ∙ LDAP
• Exchange ∙ Lotus Domino
• sockets ∙ MAPI ∙ DAPI
• SMTP ∙ X.400

Developed NT Services in C++ using MAPI, DAPI, Notes API, and NLM.

• Microsoft Exchange
• Winsock Messaging
• IBM MQ Series
• Lotus Notes ∙ Groupware
• Unix SVR4 ∙ HP UX ∙ Linux
• Netware ∙ Banyan Vines

Developed electronic software distribution services for various companies.

Merged multiple Lotus Notes domains into one domain of 7,000 clients.

Re-architected J.P. Morgan Lotus Notes mail and database replication topology. Analysis revealed latency issues, ping-pong messaging, undeliverable mail, database replication failures, conflicts, and low server availability. Upgraded Notes servers, deployed TCP/IP throughput domain, optimized mail router, and database replication.

• Btrieve ∙ XBase ∙ DB2
• C ∙ Visual Basic ∙ Clipper
• MHS ∙ X.400 ∙ X.500
• Netware 4 ∙ Netware SAA

• Btrieve ∙ XBase
• C ∙ Clipper
• MHS ∙ X.400 ∙ X.500
• 3Com 3+ Open

Architected distributed MAN with 3Com 3+ Open.

Deployed messaging system organization-wide.