Resume

Jared Lemler

Backend Engineer · Pacifica, CA

jared@jaredlemler.com | github.com/JL037 | linkedin.com/in/jaredlemler | bsky.app/profile/jaredlemler.com

Summary

Backend Engineer building high-throughput, low-latency systems in Python/FastAPI and TypeScript, with a production data pipeline processing 200k+ daily operations at 96% reduced overhead. Driving development velocity through agentic workflows that optimize sprint planning, context harnessing, and automated testing. Brings 8 years of industrial electrical infrastructure experience into software engineering: a fail-safe mindset and rigorous systems thinking carried over from zero-tolerance-failure environments into resilient API and pipeline design.

Professional Experience

VoxPort (voxport.live) — Federated Podcast Platform

Oct 2025 – Present

Founder & Lead Engineer · Remote

Technologies: Fastify, Next.js, ATProto, Prisma Postgres, Cloudflare R2, Fly.io, Vercel

Shipped a federated podcast platform: Built end-to-end on the Bluesky ATProto ecosystem — creator studio, public listener pages, OAuth identity, R2 media pipeline, and Fly.io/Vercel deployment — serving live creators and listeners.
Built a firehose ingestion pipeline: Filtered a 2,000+ events/sec Bluesky firehose to relevant-only events by configuring server-side collection filtering, dropping roughly 96% at the source across 7 collection types.
Database Operations Optimization: Cut production DB operations 96% (~209k to ~3-8k ops/day) by adding in-memory caching, extending cursor flush intervals, and batching transaction writes, eliminating ~60k table scans/day. Used an LLM agent to audit Axiom logs to identify and remediate unoptimized queries, further improving performance.
Resolved an OAuth outage: Restored PDS sign-in with 18x latency improvement by routing client-metadata.json through Cloudflare proxying, isolating Vercel IP routing as root cause via cross-network probes.
Hardened RSS import pipeline: Secured our RSS import pipeline against SSRF and file-upload attacks by implementing magic-number validation, ffmpeg metadata stripping, and RFC-1918 blocking.
Eliminated external DAW dependency: Built a browser-native recording booth with off-main-thread MP3 encoding and IndexedDB crash recovery, enabling non-destructive episode editing entirely in-browser.
Accelerated development velocity: Integrated context harnessing and agentic onboarding workflows using open-weights models to automate sprint planning, issue tracking (via MCP/Linear/Notion), and test generation, significantly reducing manual overhead.

Backend Developer (On Contract) — Talk

Jan 2025 – Feb 2026

Social Connection Platform · Remote

Technologies: Python, FastAPI, TypeScript, React, Tailwind CSS, Vite, Cloudflare, Plausible Analytics

Reduced manual reporting effort by 90%: Created automated data processing pipelines and visual analytics dashboards converting raw event metrics into business insights.
Served 200+ active university students: Developed and deployed a privacy-compliant web platform using React, Vite, Tailwind CSS, and a custom FastAPI backend infrastructure.
Accelerated time-to-market: Translated founder vision into production-ready software by rapidly converting interactive prototypes (Lovable) into full-stack solutions.
Increased user engagement: Designed a custom QR-code trigger bridging physical events with digital experiences alongside optimized user onboarding workflows.

Journeyman Electrician — Gaylor Electric · Wolverine Electric · IBEW

2017 – 2025

Indiana & Michigan

Led crews of 2–4 electricians on high-visibility commercial jobsites, reading complex architectural blueprints to deliver projects on schedule and to strict code standards.
Built and inspected critical electrical infrastructure under zero-tolerance failure environments, developing deep live-system troubleshooting capabilities.
Earned official Journeyman status through Associated Builders and Contractors (ABC); active dues-paying IBEW union member.

Featured Projects

doc-lok github → npm →

TypeScript · Node.js · Zero-dep

Pre-Prompt Context Condenser

Optimized LLM context windows: Authored a TypeScript middleware library resolving remote Markdown links into compact cryptographic markers to cut token consumption and latency. Published on npm.
Bypassed redundant downloads: Constructed a two-phase verification engine using HTTP HEAD probes and ETag validation to cache remote docs efficiently.
Eliminated third-party vulnerabilities: Developed a lightweight CLI tool and npm library relying strictly on native Node.js APIs.

Travel Wishlist travelwishlist.app →

FastAPI · React · Docker · Postgres

Location-Based Travel Planner

Delivered ~100ms response times: Built a city-based weather lookup system integrating external weather APIs with interactive mapping layers using FastAPI, PostgreSQL, and Docker.
Full-Stack Architecture: Engineered JWT authentication workflows, Pydantic data validation schemas, and agenda calendar itinerary views.

Skills & Technical Competencies

Languages & Core DBs

Python, JavaScript, TypeScript, SQL | PostgreSQL, Prisma Postgres, Neon, Alembic, Schema Data Modeling, Index Optimization

Frameworks & Infra

FastAPI, Fastify, Next.js, Node.js, SQLAlchemy 2.0, Pydantic, Django, React, Prisma ORM | AWS (EC2, Elastic Beanstalk, S3), Cloudflare R2, Fly.io, Hetzner

DevOps & Concepts

Docker, Git, GitHub, JWT, pytest, Sentry, OpenTelemetry, Axiom | Pandas, ETL Pipelines, Batch Processing | REST API Design, Distributed Systems, AT Protocol, WebSockets

AI Engineering

Agentic Workflows, Context Harnessing, Open-Weights Model Integration, Prompt Engineering, Test Harness Development

Education & Certifications

Journeyman Electrician — Associated Builders and Contractors (ABC)

Completed multi-year vocational trade training combining technical classroom instruction with on-the-job industrial experience. Active dues-paying IBEW member.

Independent Study

Ongoing practical study of Python, FastAPI, Fastify, Next.js, TypeScript, PostgreSQL, distributed systems, and the AT Protocol. Backed by 1:1 mentorship from senior engineers (former Facebook, Microsoft, and Prisma engineers).