Customer Notification Platform
Migrated to OCI-native architecture; supported a $2M enterprise deal timeline. Read the Oracle CNS OCI migration case study.
Systems at Scale
Flagship reference: Oracle Customer Notification Service migration to OCI.
Operated backend services across 32 global data centers.
Supported platforms serving 17M+ active users.
Enabled readiness for a $2M enterprise deal.
Reduced licensing costs by $200K annually.
How I Think About Failure
- Systems fail under load, not only from code defects.
- Unbounded queues and retry storms can amplify partial failures.
- Backpressure, admission control, and load shedding protect system stability.
- Design for graceful degradation instead of idealized perfect uptime.
Systems don’t fail all at once — they fail under load. Backpressure is how you stay in control.
Reliability Cluster Reading
Three essays that anchor failure dynamics and overload control:
- Why Systems Fail Under Load, Not Just Bugs — Conceptual foundation for understanding amplification loops and cascading failures.
- Retry Strategies and Idempotency — How retries amplify load and what idempotency semantics actually buy you.
- Queue Design Under Load — Why bounded queues and rejection policy matter more than queue depth.
What I’m Known For
- Distributed systems design under production constraints
- Control planes and backend platform services
- Legacy-to-cloud modernization and migration execution
- Reliability and operability when failure modes are real
- Bridging architecture strategy, hands-on implementation, and delivery operations
- Drawing from earlier Microsoft .NET, ALM, test automation, and application modernization leadership
Signature Systems
Control Plane Workflow Engine
Built partition-aware durable command/workflow framework for multitenant services. See how I designed durable workflow execution for multitenant control planes.
Java 17 Runtime Modernization
Executed rollout across 32 global data centers in under three months.
Loyalty Integration Platform
Supported 17M+ active users and $200K/year licensing savings.
What I’ve Built (Flagship Case Studies)
Flagship System
Oracle Customer Notification Service • OCI Migration
Migrated a production notification platform across 32 global data centers while preserving delivery stability.
A distributed customer communications platform moved from legacy data centers to OCI using controlled traffic shifts, queueing, and observability-first rollout strategy.
32 global data centers$2M enterprise deal supportOCI-native routing and workers
What this is
A production notification platform migration from legacy infrastructure to OCI-native service patterns.
Why this mattered
Migration quality directly influenced customer confidence and enterprise delivery readiness.
Core problem
Legacy pathways constrained elasticity, supportability, and controlled rollout operations.
My role
Led migration execution and backend implementation planning across the service transition.
Key engineering decisions
- Controlled traffic shifts instead of all-at-once cutover
- Queueing and worker isolation to reduce overload amplification
- Observability-first rollout with explicit metrics checkpoints
- See: Backpressure in Distributed Systems: Stability, Correctness, and Graceful Degradation
Tradeoffs
Balanced migration speed against operational safety and support continuity.
How I think about failure
Traffic shifting and migration can expose hidden failure paths; bounded transitions and observability reduce cascading risk.
Outcome
Improved supportability and delivery stability while supporting a $2M enterprise deal.
Takeaway: Designed a reusable control plane for durable distributed workflows across multitenant services.
Enterprise-scale control planeDurable workflowsPartition-aware execution
Shared Java frameworkDurable command executionPartition-aware workers
Why this matters: teams shipped faster without duplicating orchestration infrastructure.
Context
Multitenant control-plane environment with multiple services needing durable orchestration.
Problem
Teams needed safe distributed workflow execution without rebuilding infrastructure repeatedly.
My role
Architected and built the shared framework.
Operational / business result
Standardized control-plane execution and reduced duplicated effort.
Key decisions
- Queue + workflow core model
- Partition-aware worker execution
- Graceful degradation paths for downstream pressure
Tradeoffs / constraints
Balanced framework reuse with service-level flexibility.
Takeaway: Modernized legacy runtime and executed release rollout across 32 global data centers in under three months.
32 global data centersUnder 3 monthsJava 8 → Java 17
Java 8 → Java 1732 global data centersUnder 3 months
Why this matters: modernization improved maintainability without sacrificing rollout safety.
Context
Legacy Java runtime modernization across heterogeneous global environments.
Problem
Needed fast upgrade execution while preserving stability during global rollout.
My role
Led modernization execution and rollout planning.
Operational / business result
Delivered across 32 global data centers in under three months.
Key decisions
- Compatibility-first validation
- Staged release sequencing
- Environment-aware promotion checks
Tradeoffs / constraints
Aggressive timeline balanced against operational safety.
Takeaway: Led backend integration for customer-critical loyalty systems serving 17M+ active users.
17M+ users$200K/year savingsRewards migration support
17M+ active customersU.S. + Canada rewards migration$200K/year savings
Why this matters: platform reliability directly affected loyalty and account journeys.
Context
Loyalty and commerce platform integration in a high-volume consumer environment.
Problem
Migration and integration changes had to preserve customer-facing reliability.
My role
Engineer lead across backend API and integration teams.
Operational / business result
Supported migration and delivered $200K annual licensing savings.
Key decisions
- Balance platform standardization with delivery throughput
- Coordinate services across integration boundaries
- Preserve production continuity during migration
Tradeoffs / constraints
Platform consistency versus fast-moving product priorities.
How I Think (Writing) vs What I’ve Built (Case Studies)
These essays reflect how I design systems. The case studies show what I’ve shipped.
Designing a Correct Distributed Lease Service: Tenure on Raft
Correctness model for lease semantics, fencing tokens, and failure handling in distributed coordination.
Reasoning Artifact • Correctness EngineeringArchitecting a Multitenant Control Plane
Architecture framework behind durable command execution and control-plane workflow systems.
Reasoning Artifact • Platform ArchitectureBackpressure in Distributed Systems
Operational stability approach for admission control, bounded queues, and graceful degradation.
Reasoning Artifact • Reliability StrategyNew Writing: AI-Assisted Interview Judgment
AI-assisted coding interviews are changing format, but not accountability. This series stays focused on engineering judgment, verification discipline, ownership, and the higher-signal behaviors experienced engineers are actually being measured on.
Coding Interviews in the AI Era
Series hub and reading path connecting thesis, signal model, practical operating guidance, and interviewer-side evaluation.
Series Hub • Interviews • Engineering JudgmentCoding With AI in Interviews: Why the Bar Is Higher, Not Lower
Flagship thesis: AI changes mechanics, not responsibility, and often raises the premium on reasoning quality.
Flagship • AI-Assisted InterviewsWhat Experienced Engineers Are Actually Being Measured on in AI-Assisted Coding Interviews
Definitive deep dive on framing, constraints, verification, simplification, tradeoff clarity, and ownership under AI-assisted conditions.
Deep Dive • Experienced EngineersExperience Snapshot
The recent work is where I operate today: distributed systems, control planes, migration safety, and production backend delivery.
Oracle • 2/2020 to 11/2024
Senior Software Engineer
- Designed and operated distributed cloud services and control-plane infrastructure in a large-scale multi-region environment.
- Built shared Java workflow/orchestration frameworks for partition-aware asynchronous processing across services.
- Led Customer Notification Service OCI migration supporting a $2M customer deal.
- Delivered Java 8 → Java 17 modernization across 32 global data centers in under three months.
Starbucks • 9/2016 to 2/2020
Engineer Lead
- Guided backend API/platform teams supporting an app used by 17M+ active customers.
- Led rewards migration architecture for U.S. and Canada.
- Reduced software licensing costs by $200K annually through identity platform replacement.
Slalom • 8/2014 to 9/2016
Senior Consultant
- Provided technical leadership on cloud and API projects for clients including Microsoft and Starbucks.
- Developed Azure pipelines and Cosmos Scope scripts for Microsoft's internal big-data platform used to process Azure usage metrics.
- Built REST APIs used by thousands of Starbucks licensee locations to support rewards earning and redemption. Read the case study.
The bridge into the current platform era ran through release engineering, cloud delivery, developer tooling, and API work that connected enterprise delivery practices to modern service environments.
Avanade • 3/2011 to 8/2014
Project Manager, Delivery Tools Lead, and Configuration Manager
- Created and scaled an ALM tools training program that trained 300+ development team leads across global delivery centers.
- Managed Agile delivery of custom tool sets to reduce project costs and improve engineering consistency across teams.
- Implemented continuous delivery and release pipeline practices for a Fortune 100 big-data sales targeting and forecasting application.
- Automated packaging and deployment across websites, SQL environments, and dynamically provisioned cloud virtual machines while improving release visibility with deployment dashboards. Read the case study.
Earlier experience built the foundation: Microsoft .NET consulting, delivery tooling, inherited-system stabilization, and product engineering that shaped how I approach architecture and operations now.
Consulting Delivery • Through 11/2010
Enterprise Test Automation and ALM Modernization
- Integrated business-led UAT tooling into TFS and continuous integration so acceptance testing became part of the engineering feedback loop.
- Introduced TFS 2010 Lab Management patterns that helped enterprise teams stand up QA environments on demand with limited test infrastructure.
- Worked across multiple application groups to scale adoption beyond a single team. Read the case study.
Healthcare Software Delivery • Through 11/2010
Application Stabilization and WPF Migration Leadership
- Helped stabilize an inherited healthcare application from formal testing through production delivery in a difficult, previously unknown codebase.
- Led a fluctuating team of four to eight developers across onshore and offshore streams during remediation and usability improvement work.
- Guided a Windows Forms to WPF transition and built a functional prototype that incorporated UX improvements. Read the case study.
Product and Systems Foundation • Early Career
.NET Product Engineering, Data Modeling, and Operational Automation
- Built .NET systems including XML-driven scoring engines, ASP.NET internationalization components, and test-driven code with 95%+ coverage on authored assemblies. Read the case study.
- Managed projects spanning data modeling, market research tooling, and automation for business data collection and reporting.
- Delivered infrastructure and operations improvements including virtualization-backed test systems, Active Directory reorganization, and group policy hardening.
Education
Formal training across both technology and management, with dual Purdue University degrees that complement hands-on platform and backend engineering work.
Purdue University, College of Technology
Bachelor of Science, Computer & Information Technology
West Lafayette, Indiana
Purdue University, Krannert School of Management
Bachelor of Science, Management
West Lafayette, Indiana
Early Career Credentials and Community Work
These credentials and activities are part of the earlier Microsoft and consulting era of my career, before the later shift into large-scale platform and distributed-systems delivery.
Microsoft Certifications
- MCPD: Enterprise Application Developer
- MCTS: Team Foundation Server - Configuration and Development
- Visual Studio ALM Ranger (FY12, FY13)
Training
- Avanade Consulting Excellence
- Microsoft ALM Summit
- Essential SharePoint 2007 for Developers
- Accenture Delivery Suite - Program Management Methods and Tools
Professional Activities
- Presenter at Avanade Technical Summit 2010
- Author of a VSTS 2010 Test and Lab Management demonstration course
- Subject matter expert for the ACM 3.0 Process Template for Visual Studio 2010
- Contributor to the Avanade Test Toolkit and regular presenter for the Chicago Development Center
Core Technologies Used in Production
Languages
Java, C#, Python, Bash, JavaScript, Scala, Go
Backend / API
Dropwizard, Jersey, REST APIs, GraphQL familiarity, microservices, platform services
Cloud / Infrastructure
OCI, Azure, Kubernetes, Linux, multi-region deployment, observability
Microsoft Foundation
.NET, ASP.NET, WPF, Windows Forms, SharePoint, PowerShell, InfoPath, Hyper-V, System Center Virtual Machine Manager
Let’s Talk About Senior Backend and Platform Roles
Reach out for senior backend, platform engineering, distributed systems, control plane, and cloud modernization roles where reliability, migration, and system design are core requirements.
If your team needs someone who can design and ship production systems under real-world constraints, I’d be glad to connect.
Location: Seattle, WA
LinkedIn: linkedin.com/in/royrobertson
GitHub: github.com/richrobertson