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I help startups and small teams build practical software systems, especially internal tools, workflow automation, AI features, backend services, dashboards, and data pipelines. I can take a rough business process, figure out the real workflow, design the architecture, and build the product across the stack. My background includes production client platforms, QA automation, RAG based tools, ETL pipelines, and real time data systems using Go, Python, TypeScript, PostgreSQL, Redis, Docker, and cloud infrastructure. _Website not available. Sign in: https://www.twine.net/signup_…I help startups and small teams build practical software systems, especially internal tools, workflow automation, AI features, backend services, dashboards, and data pipelines. I can take a rough business process, figure out the real workflow, design the architecture, and build the product across the stack. My background includes production client platforms, QA automation, RAG based tools, ETL pipelines, and real time data systems using Go, Python, TypeScript, PostgreSQL, Redis, Docker, and cloud infrastructure. _Website not available. Sign in: https://www.twine.net/signup_

Aidan Costello

Full Stack Developer, Back-End Developer, Web Developer, +4

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I help startups and small teams build practical software systems, especially internal tools, workflow automation, AI features, backend services, dashboards, and data pipelines. I can take a rough business process, figure out the real workflow, design the architecture, and build the product across the stack. My background includes production client platforms, QA automation, RAG based tools, ETL pipelines, and real time data systems using Go, Python, TypeScript, PostgreSQL, Redis, Docker, and cloud infrastructure. _Website not available. Sign in: https://www.twine.net/signup_…I help startups and small teams build practical software systems, especially internal tools, workflow automation, AI features, backend services, dashboards, and data pipelines. I can take a rough business process, figure out the real workflow, design the architecture, and build the product across the stack. My background includes production client platforms, QA automation, RAG based tools, ETL pipelines, and real time data systems using Go, Python, TypeScript, PostgreSQL, Redis, Docker, and cloud infrastructure. _Website not available. Sign in: https://www.twine.net/signup_

Available to hire

I help startups and small teams build practical software systems, especially internal tools, workflow automation, AI features, backend services, dashboards, and data pipelines. I can take a rough business process, figure out the real workflow, design the architecture, and build the product across the stack. My background includes production client platforms, QA automation, RAG based tools, ETL pipelines, and real time data systems using Go, Python, TypeScript, PostgreSQL, Redis, Docker, and cloud infrastructure.

Website not available. Sign in: https://www.twine.net/signup

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Founding Engineer at Sonico AI

February 1, 2025 - June 1, 2026

Sole engineer for Sonico’s international client facing audio data platform, owning architecture and production for custom workflows that turned large client audio batches into clean, model training ready datasets. Designed the upload and job creation layer in Go with Google Cloud Storage, PostgreSQL state tracking, and Pub/Sub driven Cloud Run processing, supporting 8,000+ audio files/month. Split processing into Python/FastAPI services for normalization, transcript preparation, and custom output generation, routing each uploaded file through reusable workflow stages based on client requirements. Prototyped a Modal/NVIDIA NeMo forced alignment workflow in 60 hours to win a client bid, then hardened it into a production service for CTM, transcript, and custom outputs while reducing processing cost by 20%.

Data/ML Intern at UPS Innovation Center

August 1, 2025 - February 1, 2026

Built multi-cloud PySpark and SQL pipelines in Databricks, consolidating fragmented operational data into centralized metric tables for analytics, KPI reporting, and ML workflows. Reworked failing Azure Data Factory ETL pipelines by moving inefficient transformations into Spark jobs and updating orchestration scripts, resolving timeout failures across enterprise data workflows.

AI/Software Engineer at Key Singularity

April 1, 2025 - August 1, 2025

Built an internal planning platform using CI/CD-refreshed codebase embeddings and RAG to turn rough product ideas into technical specs, code references, and engineer routing, reducing handoff from 2–3 days to under 1 hour. Built the knowledge base ingestion for a no code voice agent platform, converting uploaded documents into chunked embeddings for Pinecone retrieval and LangGraph agent memory. Helped launch the platform by Dockerizing services, setting up Azure staging/production deployments, and building GitHub Actions CI/CD for secure releases.

Software Engineer Intern at UPS Innovation Center

June 1, 2024 - August 1, 2025

Built and deployed internal QA automation platform in Go and TypeScript that used RAG over workflow context to generate executable Playwright tests; owned multi-team rollout and trained SWEs to maintain and extend. Developed an internal LLM validation tool for API modernization, running Postman collections of legacy against rewritten services to compare responses, catch field mismatches, and reduce regression risk. Contributed across backend and full-stack teams, rewriting high-usage Java services in Go, building Java APIs for new frontend features, and debugging production issues in JavaScript and Java.