Software engineer

I build software that has to work in two worlds at once.

Software engineer at Visa, where I ship payment infrastructure and the developer tooling around it. Outside work I built OmniMusik — an iOS music client that puts owned files and streaming services in one library, with a real-time effects chain, cross-device sync, and a web companion on AWS.

See OmniMusik GitHub LinkedIn Email

Now

Software Engineer, Visa

March 2025 – present

Also

Software Developer in Test, ADP

July 2023 – present

Education

B.S. Computer Science

University of Georgia, December 2022

Featured project

OmniMusik — one library for music you own and music you stream

An iOS client that merges local files and Spotify into a single library, queue, search and playlist system, designed for Apple Music behind the same interface. Owned files get a real-time effects chain. Playlists sync to a web companion, and both clients run on AWS infrastructure I provisioned in Terraform.

OmniMusik library showing local MP3s and Spotify tracks in one list — **One library**Local files and streaming tracks in a single list, filterable by source.

OmniMusik Studio with waveform, trim handles and playback controls — **The Studio**Waveform with trim handles and an A/B toggle against the untouched original.

OmniMusik signal chain controls: speed, pitch, EQ bands and reverb — **Signal chain**Speed, pitch, EQ and reverb in the order the `AVAudioEngine` graph runs them.

OmniMusik handoff screen showing the transition to Spotify — **Handoff**Crossing from a local file into Spotify, shown as a deliberate transition rather than a glitch.

OmniMusik Now Playing screen with a Spotify track — **Now Playing**A Spotify track driven from OmniMusik's own transport, artwork and all.

OmniMusik playlists grid with mixed-source playlists — **Playlists**Mixed-source by design. The tile colour is derived from the id, so it matches on the web.

OmniMusik library filtered to Spotify — **Spotify**Browsed through the Web API; played through the Spotify app under OmniMusik's control.

OmniMusik web companion showing playlists — The web companion. Same playlists, same colours, drag-and-drop reordering, and a conflict view when both devices changed the same one.

OmniMusik web companion showing a playlist's tracks with reorder and remove controls — Inside a playlist: Spotify and local tracks in one ordered list, drag or arrow to reorder, and a Save that only lights up when something changed.

OmniMusik web sign-in page — One sign-in flow for both clients: OAuth2 with PKCE against Cognito, no SDK on either side.

The hard part

Streaming audio plays in a process the app does not own — Spotify's, or the system player's — and hands out no samples. Effects are structurally local-only, and the domain model says so rather than leaving it as a comment.

Architecture

Two deliberately separate protocols: how a track plays and where it comes from. They don't map one-to-one, and keeping them apart is why adding Spotify touched no existing source or player.

Sync

Version-checked writes, an 8-case decision table that shows conflicts instead of picking a winner, and a server epoch so a replaced database can never be read as mass deletion.

Infrastructure

Spring Boot / Postgres API on ECS, React companion on CloudFront, Cognito auth — all in Terraform, with keyless CI via GitHub OIDC and a no-NAT network that cut idle cost by about half.

7,800lines of Swift 103automated tests 45AWS resources in Terraform 17documented decisions, with rejected alternatives

Source on GitHub Web companion

Read the thinking

System designTwelve diagrams — context, the two protocols, playback, the Spotify boundary, sync, auth, the AWS topology — each with the reasoning the diagram can't show.
Field guideThe whole project in ten minutes, organised by the questions it gets asked.
Decisions logEvery non-obvious choice, with the alternatives that were rejected and why.

Experience

Where I've worked

Payments infrastructure and the tooling that keeps it shippable.

Mar 2025 – present

Software Engineer

Visa

Diagnosed a silent failure blocking every legacy reseller from enabling merchant accounts by tracing raw upstream responses to an unpopulated count the service read as zero; evaluated four fixes on dependency, latency and complexity and shipped a single-call solution 38% faster with 69× smaller payloads than the leading alternative.
Redesigned a multi-row, manual merchant rule-enablement workflow into a single guided request backed by an event-driven REST endpoint that publishes a Kafka event per merchant, decoupling intake from asynchronous execution.
Built an autonomous UI development agent as a Claude Code command orchestrating Jira, GitHub and Figma through MCP — ticket to open pull request, with React generation, Jest tests, lint remediation, a human review checkpoint and enforced AI-code compliance tagging for a regulated environment.
Built five internal developer tools (Python, Node.js) automating QA report consolidation, natural-language test-data provisioning across five environments, and vision-assisted Cypress test authoring.

Jul 2023 – present

Software Developer in Test

ADP

Engineered automated test frameworks in Cucumber, Selenium and Java, reducing manual testing effort by 36%.
Cut Jenkins test-cycle runtime by 41% by refactoring test scripts.
Wrote test plans and cases and monitored Jenkins jobs to track automated results.

Skills

What I work in

Languages

SwiftJavaTypeScriptJavaScriptSQLHTML & CSS

Frameworks & platforms

SwiftUIAVAudioEngineSwiftDataSpring BootReactKafkaOracle DBPostgres

Infrastructure & tooling

AWSTerraformGitHub ActionsJenkinsSeleniumCucumberXcodeClaude Code

Contact

Say hello

Open to conversations about iOS, audio, backend systems, and the infrastructure that runs them.