01 / ProfileBuilder's Field Notes

Franklin Jara

Charlotte, NC—Senior Software Engineer @ Medshift

I build useful software: commerce platforms, product experiments, developer tools, and small systems that solve a real problem.

At Medshift, I work across frontend, backend, and data. Outside work, I build AI products, study lower-level systems with Zig and Rust, and contribute to open-source tools I use.

A lot of my side projects begin with a personal itch, like turning bouldering sessions into better feedback. Away from the keyboard, I'm usually climbing or listening to techno.

swemedshiftpythonvuetypescriptdjangopostgresqlshopifyrustzigboulderingtechno

mode

build / ship / refine

focus

product engineering + commerce systems

02 / ExperienceCurrently shipping at Medshift

Work in the wild

Production systems.

A record of practical software work—from commerce platforms and internal operations to R&D systems and teaching. Built to hold up beyond the demo.

Product + commerce

R&D + operations

Teaching + mentorship

Selected operating historyExpand a role for the full field notes

Case file

Medshift

Senior Software Engineer

PythonVueTypeScript+3

Impact

Build and improve commerce tools across frontend, backend, and data.

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Full field notes

Build and improve commerce tools across frontend, backend, and data.
Ship product features and integrations with Python, Vue, TypeScript, Django, PostgreSQL, and Shopify.

Working set

PythonVueTypeScriptPostgreSQLDjangoShopify

Case file

Cherry Hill Programs

Software Engineer / R&D Lead

TypeScriptTurborepoBun+6

Impact

Built and scaled an e-commerce platform that processed more than 1M orders.

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Built and scaled an e-commerce platform that processed more than 1M orders.
Led R&D prototypes for queue-backed tools and AI workflows.
Built an internal expense-planning tool for new-hire operations.

Working set

TypeScriptTurborepoBunBullMQAIReactGraphQLAWSDocker

Case file

Adelphi University

Graduate Teaching Assistant

PythonTeachingMentorship

Impact

Taught hands-on Python labs and helped students debug one-on-one.

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Full field notes

Taught hands-on Python labs and helped students debug one-on-one.
Made core programming concepts easier through practical exercises.

Working set

PythonTeachingMentorship

[SHIPPED]

Public Work Ledger

A compact index of products, templates, systems projects, and upstream contributions you can click through.

receipts

What shipped, not where I network.

A verifiable ledger of live products, starter kits, systems work, and upstream pull requests—with direct links to the work itself.

180+public repos + forks 89PRs authored 76merged PRs 44merged external PRs

Live product

Cima

AI-assisted climbing feedback, session history, grade progress, leaderboards, and 50+ badge loops for climbers.

Open receipt

Live product

Drezzi

AI outfit try-on with uploaded garments, personal photos, fast render loops, lookbooks, and 4K exports.

Open receipt

Starter kit

Mono-F7

A Turborepo template for TanStack Start, Hono, tRPC, Better Auth, Drizzle/Postgres, Docker, and deployable app scaffolding.

Open receipt

Systems lab

Zig builds

A programming language, HTTP server, POSIX-ish shell, tiny racing game, and Advent of Code work shipped in Zig.

Open receipt

upstreamAll GitHub PRs

dnakov/litterAmp support, native app polish, model-picker resilience, mobile UX, themes, and Android markdown work.dnakov/alleycatAmp harness support, Droid auth store detection, and native-thread hydration on startup.rivet-dev/sandbox-agentPi harness support plus sandbox examples and docs for agent runtimes.agent/dev toolsPRs across Kittyfarm, Tokscale, Avante, kznllm.nvim, dingllm.nvim, and data-table tools.

[BUILDS]

Products, Tools + Systems

Live products and open-source experiments across AI, full-stack, and low-level software.

bouldering + aiLive product

Cima

Cima turns climbing videos into structured feedback: technique notes, session history, grade progress, leaderboards, and 50+ unlockable badges that keep climbers coming back.

Open project

ai + fashionAI app

Drezzi

Drezzi renders uploaded outfits on your own photo in about 25 seconds, with 4K results, lookbooks, style tips, and multi-pose views built around a fast try-on loop.

Open project

dev toolsOpen source

Mono-F7

Mono-F7 is the starter I wanted for shipping full-stack ideas fast: TanStack Start, Hono, tRPC, Better Auth, Drizzle/Postgres, Docker, and Turborepo wired together.

Open project

languagesSystems

Z-Language

A custom programming language written in Zig, from lexer and parser through code generation, built to understand the full pipeline behind fast developer tools.

Open project

[LABS]

full-stackFull-stack lab

F7

A multilingual full-stack todo app used as a proving ground for TanStack Start, React 19, tRPC, optimistic updates, and AWS/SST serverless deployments.

Open project

ossContributions

Open Source

I ship upstream PRs across Litter, Alleycat, Kittyfarm, sandbox-agent, Tokscale, Avante, and other tools I actually use.

Open project

generative aiGenerative AI

Starlit AI

A generative art platform for creating and sharing DALL-E 3 images, built with React and AWS Lambda to explore prompt UX and serverless AI workflows.

Open project

game devGame dev

Tiny Car

A tiny 2D racing game in Zig/Raylib focused on fast iteration: physics-based driving, random tracks, and real-time collision detection.

Open project

low-levelLow-level

HTTP Server

A from-scratch HTTP/1.1 server in Zig that handles concurrent connections, routing, static files, and structured error logging without hiding behind a framework.

Open project

github.com/makyinmars

[STACK]

Generalist operating range

I like owning the seams: product shape, UI details, API contracts, queues, data, infrastructure, and enough systems work to know when an abstraction is leaking.

Product

Ambiguous idea → useful workflow

Frontend

Vue, React, TanStack, UX polish

Backend

Python/Django, Bun/Node, APIs

Data

PostgreSQL, Drizzle, SQL modeling

LLM workflows, agents, eval loops

Infra

AWS, SST, Docker, Turborepo

Systems

Rust/Zig when edges matter

Tooling

Neovim, CLIs, dev environments