# Ethan Smith **Software Engineer** Akron, OH | esmith@project802.io | esmith.project802.io | github.com/Binary12Spy | codeberg.org/binaryspy --- ## Summary Systems-leaning software engineer with deep ownership of a flagship industrial platform. Focused on IPC, shared memory, hardware integration, and platform modernization -- including a ground-up Rust rewrite of TunnelWatch core. Known for gatekeeping architecturally sensitive code paths, shipping high-quality work ahead of estimates, and taking on senior-scope initiatives independently. --- ## Technical Skills | | | |---|---| | **Languages** | C#, .NET, Delphi, JavaScript, Python, Rust, SQL, Node.js | | **Systems** | IPC, shared memory, memory-mapped files, TCP/IP, MODBUS | | **Hardware** | PLCs, ladder logic, hardware interfacing & emulation | | **Tools & Practices** | Git, Selenium, test automation, code review, architectural design | --- ## Experience ### DRB Systems -- Akron, OH | Aug 2020 -- Present *Industrial software for car wash operations* **Software Engineer** | Jan 2024 -- Present - Led architectural refactor of a legacy memory-mapped file system -- replaced unsafe concurrent access with IPC and process separation, eliminating Memurai dependency. Delivered in ~2.5 months against a 7-month estimate; saved ~$22.7K in dev time and $24K/year in recurring licensing. **Inspire Award recipient.** - Sole engineer on a ground-up rewrite of TunnelWatch core in Rust; greenlit by leadership to own design and implementation while maintaining the production platform in parallel. - Architectural steward for high-risk areas of the TunnelWatch platform (shared memory, IPC, core system behavior); trusted by Product Owner and Engineering Manager to gate changes affecting source-of-truth and data flow integrity. - Designed and shipped core backend logic for a net-new, patent-pending platform feature -- owned the most technically complex portions (Delphi internals, IPC coordination). Passed QA without a single developer return. - Resolved a P1 production defect outside business hours; reproduced, diagnosed, and validated a fix before sprint kickoff, delivering day one of the sprint. - Root-caused and fixed a field defect (device retraction bug) that had consumed two sprints of senior engineering time; validated fix delivered within 24 hours. - Following a cross-product security incident, independently identified a systemic vulnerability in the shared Assisted Access mechanism and self-initiated a cryptographic replacement using JWT/Ed25519 with per-site binding, nonce binding, replay protection, and scope enforcement. Delivered full documentation, threat model, and a live-demo POC; presented to engineering leadership and PLM -- received unsolicited praise from PLM representative for enterprise-level depth. - Tasked with designing a cross-site authentication and centralized management platform for TunnelWatch, enabling enterprise customers to manage multi-site deployments from a single system; navigating challenges including offline-capable account resolution and distributed database design for a historically offline-first, on-prem product. - Maintain a Tech Debt Inventory providing org-wide visibility into systemic risk; regularly consulted by ELT and cross-functional teams on TunnelWatch architecture. **Quality Assurance Engineer** | Dec 2022 -- Jan 2024 - Built and maintained test automation using C#, Python, and Selenium across multiple product lines. - Engineered custom hardware interfaces for automated testing: magnetic gate interfacing, vehicle presence simulation, and tunnel hardware emulation. - Developed TCP/IP and low-level debugging proficiency supporting Revision C logic card work; knowledge applied directly to subsequent systems engineering role. - Developed internal tooling and process improvements adopted across the QA team. **Technical Support Representative** | Aug 2020 -- Dec 2022 - Resolved escalated technical issues across complex industrial control systems; built deep product knowledge that later anchored QA and engineering work. - Mentored teammates and contributed to internal system documentation. --- ## Projects **ESP32 Gate Loop Automation Controller** | C | FreeRTOS | Professional Firmware in C on FreeRTOS for an ESP32-based controller that automates inductive vehicle detection loop triggering for industrial gate systems. Manages four loop channels via GPIO, hosts an on-device WiFi access point, and exposes a REST API for integration with external automation tooling. **The Cooperative OS** | Design & Research | Rust/C++ (planned) Research writeup and planned proof-of-concept for a modern cooperative scheduling model built around a formalized Yield Contract -- programs declare and certify their yield behavior at install time, recovering cooperative efficiency while eliminating its historical failure modes. Targets a bare-metal kernel in Rust/C++. https://esmith.project802.io/projects/the-cooperative-os/ **Clean-Room Web** | Design & Research | Personal Architectural research and proof-of-concept proposing a redesigned web stack -- a minimal versioned core, swappable userland layout libraries, and capability-based security. Backed by a working demonstration in which a host oblivious to layout loads two different layout libraries and swaps one for the other unchanged. https://esmith.project802.io/projects/clean-room-web/ --- ## Education **High School Diploma** | Christian Liberty Academy --- ## Interests 3D printing | home automation | photography | biking | video games