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Nathaniel Mapaye inside an immersive balloon installation

Bay Area Systems & Embedded Software Engineer · C++23 · FreeRTOS · Go

Systems
to screens.

Bay Area systems and embedded software engineer building C++ concurrency libraries, FreeRTOS telemetry prototypes, application security tools, and dependable product interfaces.

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SYSTEMS / SECURITY / PRODUCT

Operating range

Embedded systems
C++23, FreeRTOS, ESP32 and STM32 telemetry, DMA sampling, MQTT, and low-power design
Concurrency and cloud
Lock-free concurrency, atomics, Linux, Go, Kubernetes, Prometheus, and GitOps
Security and AI
Application security testing, vulnerability remediation, AI evaluation, and reproducible software analysis

01 / Work

Selected work

Featured / 01

EmbNode

C++17 FreeRTOS telemetry prototype

A C++17 embedded telemetry prototype with FreeRTOS task scaffolding for ESP32 and STM32, host-tested packet framing, power accounting, and OTA coordination.

Problem
Intermittent networks and low-power constraints make telemetry delivery unreliable.
System design
FreeRTOS task scaffolding separates simulated sampling, aggregation, and transport hooks.
Evidence
Host contract tests exercise packet validation, power accounting, and OTA backend failures.
Outcome
A testable telemetry foundation; hardware DMA, network delivery, and field reliability still need validation.
  • C++17
  • FreeRTOS
  • ESP32 / STM32
  • MQTT / HTTP
  • OTA / Watchdog
  • CMake / CTest
View EmbNode source ↗Read the telemetry design ↗
CRC16
Packet validation
Host
Contract tests
C++17
Telemetry prototype
02

SysLib

C++20 systems and concurrency library

A header-only systems library with a lock-free SPSC ring, a blocking MPMC queue, and RAII resource wrappers.

Problem
Concurrent data-structure experiments need a small surface that makes correctness work explicit.
System design
Header-only C++20 SPSC atomics and a mutex-based MPMC queue keep ownership explicit.
Evidence
Tests cover wraparound, move-only values, wakeups, value lifetime, and concurrent delivery.
Outcome
A focused library for examining queue behavior, with sanitizer build options and explicit limitations.
  • C++20
  • Atomics
  • Lock-free
  • TSan
View SysLib source ↗ Read the concurrency design ↗
03

GitOps

Go Kubernetes canary operator

A Go Kubernetes operator that turns service-level signals into automated canary decisions.

Problem
Canary releases need a clear decision path when service health changes.
System design
A Go Kubernetes operator combines Prometheus SLO signals with Gatekeeper policy checks.
Evidence
The rollback path triggers in under 30 seconds on a p95 regression.
Outcome
Release decisions become repeatable rather than dependent on manual monitoring.
  • Go
  • Kubernetes
  • Prometheus
  • ArgoCD
View GitOps source ↗
04

AURORA

Private React Native iOS caffeine and sleep tracker

A React Native iOS app unifying caffeine logging, intake dashboards, and psychomotor-vigilance testing through optional read-only Apple Health access and local-first storage.

Problem
Personal health signals need useful feedback without exporting sensitive data by default.
System design
React Native and Swift connect a local data model, optional read-only HealthKit access, and SQLite persistence.
Evidence
Caffeine logging, intake dashboards, and a 60-second vigilance test share normalized local inputs.
Outcome
A private iOS and iPad experience turns low-level data choices into a clear daily workflow.
  • React Native
  • TypeScript
  • Swift
  • Apple HealthKit
  • AsyncStorage
  • SQLite
Read AURORA case study ↗ View AURORA demo ↗

02 / Experience

Systems.
Security.
Product.

  1. 01

    LLM Specialist

    Frontier AI Lab

    Jun 2026 - Aug 2026

    San Francisco, CA / Contract

    • Evaluated 520+ frontier AI outputs across software engineering and technical reasoning against correctness, instruction following, and edge-case criteria, producing reproducible evidence for model-improvement workflows.
    • Diagnosed 70+ recurring failure patterns and wrote evidence-backed annotations; 89% of reviewed cases could be rerun with the same behavior.

    AI Evaluation / Software Analysis / Python / C++ / Structured Rubrics

  2. 02

    Cyber Security AI Red-Teamer Intern

    CFX Indonesia

    Jun 2026 - Present

    Jakarta, Indonesia

    • Assessed 30+ assets across web, network, and control workflows in three workstreams: risk analysis, control documentation, and vulnerability remediation.
    • Analyzed and triaged 27+ vulnerabilities in OJK-regulated digital-asset infrastructure, tracking each finding through remediation with a clear evidence trail.

    Burp Suite / OWASP ASVS / Risk Analysis / Vulnerability Triage / Control Documentation

  3. 03

    Subject Matter Expert (SME), AI Alignment

    Handshake

    Apr 2026 — Present

    Remote / Contract

    • Audited 8+ repository-level software tasks across code, diffs, tests, and requirements to determine whether proposed changes satisfied task requirements.
    • Documented reproducible failure modes and implementation gaps under structured rubrics for AI-alignment review.

    Git / GitHub / Python / C++ / AI Evaluation Rubrics

  4. 04

    Linear Algebra Tutor

    UCSC ACE

    Jan 2026 — Apr 2026

    Santa Cruz, CA / Hybrid

    • Tutored students in linear algebra through guided problem-solving — systems of equations, matrix operations, vector spaces, linear transformations, eigenvalues, and diagonalization.
    • Led collaborative review and practice sessions focused on exam prep, homework strategy, and conceptual gaps; helped students move from memorized procedures toward step-by-step reasoning.

    MATLAB / LaTeX / Python

  5. 05

    Data Center Engineering Intern

    Bitera D.C

    Aug 2025 — Sep 2025

    Jakarta, Indonesia

    • Verified 16+ high-severity web findings through authenticated testing and retesting, producing actionable remediation evidence.
    • Supported five live data-center domains across Linux, networks, power, cooling, and alarms while documenting repeatable operational checks.

    Burp Suite / Linux / Git / LibreNMS / Markdown SOPs

  6. 06

    Cyber Security Analyst Intern

    Xapiens Teknologi Indonesia

    Jul 2024 — Sep 2024

    Tangerang, Indonesia

    • Executed authenticated scans and manual web tests on 50+ endpoints, validated exploitability, and produced proof-of-concept reports for several CVSS 8.0+ findings.
    • Prioritized remediation and documented retest evidence so client teams could track high-risk findings through closure.

    Nessus / Burp Suite / OWASP Testing Guide / TCP/IP / Jira

Nathaniel Mapaye posing in front of an aquarium

03 / Notes

Notes from
the underground

Browse all engineering notes

04 / Contact

Let’s build.

Open to Bay Area and remote internships and early-career roles in systems, embedded software, application security, and product engineering.

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