Daniel Arday

• Developed the Rapid Ship Design Environment (RSDE) app in C++ and Python for 3D naval modeling and physics simulations.
• Built and optimized Python-based map simulations for real-time analysis and visualization of spatial data.
• Utilized LEAPS database for secure storage and retrieval of sensitive naval data.
• Employed C++ Boost Library for linear algebra, number generation, multithreading, image processing, and unit testing.
• Worked on 3D naval models using vector-based mathematics and NURBS (Non-Uniform Rational B-Splines).
• Implemented BDD testing with Squish, a Qt-friendly Python framework for QA.
• Wrote and reviewed technical documents in compliance with US federal requirements.

Java & Python Developer in Card Tech, contributing to the Virtual Card Network (VCN) platform, enabling secure digital payments without physical cards.

• Optimized database performance and stress-tested the Payment Token Service Provider app, managing the lifecycle of payment tokens like VCNs.
• Created and maintained Aurora MySQL and Aurora PostgreSQL instances using Amazon RDS with pre-production scrubbed data.
• Spun up and configured EC2 instances for database testing and benchmarking.
• Automated data loading and benchmarking with Python and Bash scripts, improving data analysis efficiency.
• Managed IAM roles, VPC access, and S3 buckets for secure data access and storage.
• Conducted performance comparisons between partitioned and non-partitioned Aurora PostgreSQL databases.
• Visualized metrics using Pandas and integrated them into Google Sheets for stakeholder presentations on data analysis and optimization strategies.

Golang Developer, working on multi-application microservice architectures for the management and accrual of member loyalty points.

• Developed high-performance microservices using gRPC in Go to streamline data exchange and service communication across distributed systems.
• Built scalable back-end services handling large volumes of concurrent data using Go routines and channels.
• Utilized core Golang concepts (Maps, Slices, Structs, Interfaces) to optimize service performance and reliability.
• Created an internal logger and error-handling service in Go based on Golog for enhanced debugging and monitoring.
• Managed and deployed services on Kubernetes, monitoring pods and CI/CD pipelines with GitLab and Splunk for smooth transitions across environments.
• Handled secure file transfers to Kubernetes pods using MinIO Client and integrated Prometheus and Grafana for real-time metric collection and analysis.
• Automated testing and integration using Gherkin, Cucumber, and BDD principles to ensure seamless deployments and reliable service delivery.

• Modernized legacy Java calls to AWS DynamoDB and S3 Buckets, transitioning to NoSQL for increased scalability.
• Handled deployment and versioning using Git, Docker, Jenkins, and DevBox.
• Advocated for SCRUM methodologies, improving team performance during a six-week DOJO session.
• Collaborated with cross-functional teams to implement reactive data streams and asynchronous processing with Java 8.

• Reverse-engineered legacy Java 5/Swing systems into modern implementations using Java 8, Spring, and Angular 10.
• Developed modern interface with Ag-Grid for data visualization and manipulation, focusing on human-centered design principles.
• Utilized SQL DML, DQL, and DDL scripts to understand legacy tables and validate database functionality.
• Improved software interfaces with Java 8 stream methodologies, enhancing responsiveness and performance.
• Managed key user privileges with Auth0, HTTP Interceptors, and Spring Security across multiple roles.
• Ensured over 80% code coverage using Mockito, JUnit 5, and Cucumber for automated testing.

• Contributed to a multi-team overhaul of a legacy centralized SQL database into a multi-platform cloud-based architecture.
• Developed RESTful APIs to parse and persist incoming JSON messages from Azure Service Bus and Event Hubs into CosmosDB.
• Integrated JDBC with DB2 to cross-check real-time data streams and facilitate data migration.
• Implemented reactive data processing using Spring, Java 8, and RxJava, transitioning from synchronous (JDBC) to asynchronous systems (Kafka, Cosmos).
• Managed data transmission to legacy databases using SQL and SOAP services.
• Supported CI/CD versioning with Git, Docker, Jenkins, Looper, and OneOps for reliable deployments.
• Utilized Azure Key Vault to secure sensitive runtime information, including database keys and API endpoints.
• Assisted platform architects with performance optimization and identifying system bottlenecks.

• Developed Screen Force, an internal app to standardize assessments for technical screeners, using Java (backend) and Angular 7 (frontend).
• Implemented AJAX actions to dynamically load user data from web services, integrating RxJS for object piping between Java and JSON.
• Built microservice routing with Spring Cloud Gateway and utilized Spring Data and Hibernate for efficient interaction with relational databases.
• Incorporated Eureka for load balancing and service discovery, enhancing application resiliency.
• Focused on expanding full-stack development skills through hands-on projects in Java, Spring, and Angular before deployment to client projects.