Brahian Arias — Software Engineerfocused on AI, agents & infrastructure.
I design and ship autonomous AI systems and the resilient backend infrastructure that keeps them running in production.
$ cat focus.txt
AI · Agents · Backend · Infrastructure
$ deploy --status▋
Over the last few years I've worked on applied AI and distributed systems with microservices, event queues, and container orchestration. I build inference pipelines and implement observability tooling, making the system reliable. I deeply care about correctness under failure, latency, and abstractions that other engineers or agents can use to optimize their work.
- 2+
- Years shipping
- 99.98%
- Uptime maintained
A backend engineer highly dedicated to AI and infrastructure.
I started my career as a full-stack engineer for early-stage startups and gradually dove into the world of distributed systems: concurrency, queues, and maintaining impeccable uptime even at 3am.
Today, most of my work is dedicated to LLM-based agents — giving them tools, memory, and guardrails. I wrap them in the infrastructure that makes them applied to a precise business need.
Away from the keyboard, I enjoy guiding other engineers, write on my blog about systems design, and spend time tuning my local dev environment.
The tools I reach for.
AI & Agents
- LLM orchestration
- RAG pipelines
- Tool calling
- Vector search
- Fine-tuning
- Eval harnesses
- LangChain
Backend
- Go
- Rust
- Python
- TypeScript
- gRPC
- Connect RPC
- GraphQL
- Event sourcing
Infrastructure
- Kubernetes
- Terraform
- AWS
- GCP
- CI/CD
- Postgres
- Kafka
- Redis
- Observability
Selected work.
Go Redis Clone
Minimal Redis clone
Redis-compatible server built from scratch in Go — RESP2 over TCP, in-memory key-value store with TTL support, zero third-party dependencies.
Ice Wear Store
AI Assistant for E-Commerces
AI streetwear shopping assistant — RAG chatbot that recommends products from brand catalogs using text and image queries with OpenAI, Gemini vision, and Qdrant vector search.
Dayvent
ERP SaaS for restaurants
All-in-one restaurant management platform — POS, menu engine, tables and rooms, kitchen display, staff PIN system, CRM with loyalty, and native DIAN electronic invoicing.
Where I've spent my time.
Software Engineer, Full-Stack · Byte4Bit
Jan 2024 — May 2026Remote
- Delivered full-stack solutions across 5 client companies as a software consultant, specializing in AI implementation, backend architecture, and infrastructure.
- Led infrastructure migrations including a full Azure to Digital Ocean transition, reducing cloud costs while improving deployment velocity.
- Built and deployed distributed systems in production for Audit1.
- Designed and implemented a recommendation graph pipeline for dating applications.
- Implemented AI-powered chatbots with human-like behavior through queue-based systems and waiting mechanisms.
- Established CI/CD pipelines and internal tooling that improved developer experience and deployment reliability across client teams.
GoReactPostgresAICI/CD