Thomas D

• Built an end-to-end scalable platform automating job discovery and application • Developed an LLM-based crawling pipeline with structured output to collect and normalize job offers • Implemented a vector search engine for semantic profile-job matching • Created a RAG-based system to automatically customize resumes and cover letters Python, FastAPI, TypeScript, React, Next.js, PostgreSQL, Redis, OpenAI

• Built an app to generate professional headshots from casual selfies • Developed the backend, including a pipeline for image preprocessing • Designed an intuitive interface for generating and previewing headshots Rust, Axum, TypeScript, React, Next.js, PostgreSQL, Redis, OpenAI

• Built a marketplace for freelance services, powered by Bitcoin • Developed the backend system managing tasks, offers, invoices, and transactions • Developed an escrow system with Lightning Network payment integration • Implemented a secure authentication mechanism for Lightning wallets Rust, Rocket, PostgreSQL, Redis, JavaScript, Bitcoin, Lightning Network

• Developed a high-performance library collecting metrics from social networks (millions of data points daily) • Built command-line apps to monitor popular YouTube channels • Designed and deployed a DAG-based data pipeline orchestration system Rust, Rocket, Docker, Data Firehose, Data Streams, S3, Redshift, Elasticache, Airflow, Cloudwatch, ECR, EKS

• Built a scalable backend monitoring 100K+ blockchain accounts on the Polkadot network • Developed the web interface and a Discord bot for automated alerts • Managed infrastructure, deployments and security across cloud providers Python, FastAPI, TypeScript, React, PostgreSQL, Redis, GCP, Docker

• Improved backend scalability, reducing NLP task processing time by 50% • Developed an API for management of internal data sources • Prototyped a reverse search engine reusing backend components • Conducted benchmarks, enhanced error reporting and monitoring tools Python, FastAPI, PostgreSQL, Redis, Grafana, Kibana, Sentry

• Developed ETLs to transfer data from e-commerce platforms • Developed a scraping bot to extract financial data from a crypto exchange • Created extensions for a medical software • Developed websites and migrated databases for small businesses