I'm a software engineer passionate about systems-level programming, embedded Linux, and performance optimization.
fn main() {
let languages = vec![
("C", "10+ years: Embedded, drivers, performance"),
("C++", "Cross-platform, modern C++ standards"),
("Rust", "Memory-safe systems, concurrent programming"),
];
// Functional programming with iterators
let rust_info = languages.iter()
.find(|(lang, _)| *lang == "Rust")
.map(|(_, info)| info)
.unwrap_or("Not found");
println!("Rust experience: {}", rust_info);
// Demonstrate more Rust features
let lang_count = count_languages(&languages);
assert_eq!(lang_count, 3);
}
// Unit testing
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_languages_vector() {
let languages = vec![
("C", "10+ years: Embedded, drivers, performance"),
("C++", "Cross-platform, modern C++ standards"),
("Rust", "Memory-safe systems, concurrent programming"),
];
assert_eq!(languages.len(), 3);
assert_eq!(languages[2].0, "Rust");
}
#[test]
fn test_language_lookup() {
let languages = vec![
("C", "10+ years: Embedded, drivers, performance"),
("C++", "Cross-platform, modern C++ standards"),
("Rust", "Memory-safe systems, concurrent programming"),
];
let rust_info = languages.iter()
.find(|(lang, _)| *lang == "Rust")
.map(|(_, info)| *info);
assert_eq!(rust_info, Some("Memory-safe systems, concurrent programming"));
}
}
// Helper function with generic type
fn count_languages<T>(languages: &Vec<(T, T)>) -> usize {
languages.len()
}# Advanced: kernel debugging, systemd custom units, infra automation
sudo perf record -g -- ./my_app
systemctl status my-custom.service
ansible-playbook --tags "deploy,upgrade" site.yml# Rootless container with custom network, isolation, and healthchecks
[Container]
Image=custom/ci-build:latest
Name=ci_build_runner
Network=podman
Environment=CI=true
Volume=%h/build:/build:Z
HealthCheckCmd=build.sh --health
Exec=build.sh --target release# OCI-compliant multi-stage build for secure, minimal containers
# Build stage
FROM rust:1.70-slim AS builder
WORKDIR /build
COPY Cargo.toml Cargo.lock ./
COPY src ./src
# Create empty dummy project to cache dependencies
RUN mkdir -p src && \
echo "fn main() {println!(\"if you see this, the build failed\")}" > src/main.rs && \
cargo build --release && \
rm -f target/release/deps/myapp* src/main.rs
# Build the actual application
COPY . .
RUN cargo build --release --locked && \
cargo audit && \
cargo clippy -- -D warnings
# Runtime stage with minimal distro
FROM debian:stable-slim AS runtime
LABEL org.opencontainers.image.source="https://github.com/noah-knegt_priva/repo" \
org.opencontainers.image.created="2025-05-23T07:56:29Z" \
org.opencontainers.image.authors="noah-knegt_priva" \
org.opencontainers.image.title="Secure Application Container"
# Install minimal runtime dependencies
RUN apt-get update && \
apt-get install -y --no-install-recommends ca-certificates tzdata && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
# Set up non-root user in the runtime image
RUN groupadd -g 65535 appuser && \
useradd -u 65535 -g appuser -s /usr/sbin/nologin -c "Container User" appuser
# Copy the compiled binary from the builder
COPY --from=builder /build/target/release/myapp /usr/local/bin/myapp
# Create data directory with correct permissions
RUN mkdir -p /data && \
chown 65535:65535 /data
# Set secure permissions on binary
RUN chmod 550 /usr/local/bin/myapp
# Configure runtime environment
ENV RUST_LOG=info
# Run as non-root user
USER appuser
# Mount points for external data
VOLUME ["/data"]
# Set resource limits
STOPSIGNAL SIGTERM
# Health check configuration
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
CMD ["/usr/local/bin/myapp", "--health"]
# Container entrypoint
ENTRYPOINT ["/usr/local/bin/myapp"]
CMD ["--config", "/data/config.toml"]# Modern layer config, PACKAGECONFIG, and image customization
SUMMARY = "Custom system image with extra features"
LICENSE = "MIT"
inherit core-image
IMAGE_FEATURES += "ssh-server-openssh tools-debug"
PACKAGECONFIG:pn-my-custom-app = "feature-x"
IMAGE_INSTALL:append = " my-custom-app"- Systems programming & performance tuning
- Embedded Linux (device drivers, real-time)
- Container security & automation (rootless, CI/CD)
- Custom build pipelines for resource-constrained targets
💬 Always open to collaboration on robust, efficient, and secure systems!