Hello, I'mEduardo Kairalla

Software Engineer | Backend & Distributed Systems

I work with software development (mostly backend), systems architecture and DevOps, integrating code and infrastructure to deliver high-performance solutions.
From design to production.

GitHub LinkedIn

// Studying Software Engineering • PUC-Campinas

GET /api/whoami

curl -s -X GET 'https://eduardokairalla.com/api/whoami' \
  -H 'Accept: application/json' | jq

Run the request to see the response.

+--------------+
| $ whoami     |
| > eduardo    |
| role: swe    |
+--------------+

[ 01 / 06 ]·about

About Me

Developer passionate about technology and innovation

Eduardo Levy Kairalla

Software Engineer | Backend & Distributed Systems

I'm Eduardo, a software engineer focused on Backend and distributed systems. I work with architecture design, microservices/monoliths and scalable infrastructure.

My experience spans from designing microservices and data pipelines to complex integrations with external APIs, messaging systems and applied artificial intelligence. I like to understand a problem down to its root (the business logic) before writing the first line of code.

I am driven by technical curiosity and the constant pursuit of elegant solutions to complex problems. I believe that good code is not only functional, but also scalable, maintainable, intelligent, and as simple as possible.

Backend Software Engineer at Vulcanet - Systems and Engineering

Open to new connections, collaborations and projects.

“Most good programmers do not program because they expect payment or recognition, but because programming is fun.”

— Linus Torvalds

Since I was 11, programming has always been about curiosity and the joy of solving problems. Everything else is a consequence.

Soft Skills

Curious

Collaborative

Innovative

Proactive

GitHub activity

View on GitHub

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Public repos

—

Total stars

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Total forks

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Followers

+-------------+
| application |
+-------------+
|   domain    |
+-------------+
|    infra    |
+-------------+

[ 02 / 06 ]·skills

Skills & Competencies

Technologies and skills I master.

AI & LLMs

AI AgentsAI AssistantsAnthropic APIEmbeddings / semantic searchFine-tuningGemini APIHugging FaceLangChainLangGraphLLM AutomationMCPsOpenAI APIPrompt EngineeringRAGWhisper / STT

Architecture & Practices

Agile / ScrumClean ArchitectureCQRSDDDDesign PatternsEvent-Driven ArchitectureMicroservicesOOPSoftware ArchitectureSOLIDTesting / TDD

Backend & APIs

CeleryETL PipelinesExpressFastAPIFlaskgRPCJWT / OAuthNestJSNode.jsOpenAPI / SwaggerPrefectRabbitMQREST & GraphQLSQSSSE (Server-Sent Events)TCP SocketsTwistedWebhooksWebSockets

Computer Science Fundamentals

Algorithms & Complexity (Big O)Computer Architecture (MIPS Assembly, Cache, Memory Hierarchy)Data Structures (Linked Lists, Trees, Graphs, Hash Tables)Fundamentals of Data CommunicationLogic CircuitsOperating Systems (Processes, I/O, File Systems)Parallel and Distributed Programming

Databases

ClickHouseElasticsearchGraph DBsModelingMongoDBMySQLNoSQLOLAPPostgreSQLPrisma / TypeORMQdrantRedisSQLSQLAlchemySQLiteSupabase / FirebaseVector DBs

DevOps & Cloud

AWSBashCI/CDDockerGitGitHub ActionsGitLab CIGoogle CloudGrafanaIaCKubernetesLinuxNetworkingNginxOpen sourcePrometheusServerlessTraefik

Languages

CDartGoJavaScriptPythonTypeScript

Interested in collaborating or learning more about my experience?

~/projects
|- lectern
|- stockflow
|- neura-ai
|- async-jobs
`- ...

[ 03 / 06 ]·projects

Projects

A selection of things I've built, from production-minded backends to weekend experiments.

Backend · AI · RAGOpen source

Lectern

The self-hostable backend powering the assistant on this site

A headless backend that turns a declared identity and a set of documents into a grounded conversational API. The pipeline ships assembled, with memory, retrieval, cache and analytics already wired, so you only declare what it speaks about, and it never states a fact that isn't in your corpus.

Grounded answers as JSON or streamed over SSE
Text or audio questions, transcribed server-side
Per-session memory: rolling summary + recent turns
Analytics per exchange: sources, scores and tokens

PythonFastAPIPostgreSQLQdrantRedisCeleryLangChainDocker

View on GitHub

pipeline.py

# Lectern · the pipeline ships assembled
async def respond(msg: ChatMessage) -> Answer:
    # 1 · rolling summary + recent turns
    state = await load_memory(msg)

    # 2 · make the question self-contained
    query = await rewrite(state)

    # 3 · ground it in the corpus
    docs = await retrieve(query)  # Qdrant · top-k

    # 4 · answer only from what was retrieved
    answer = await generate(state, docs, identity.persona)

    # sources, tokens & feedback, off the hot path
    schedule_persistence(answer)  # → Celery
    return answer

# you declare the subject, not the pipeline

More projects

Backend · Blockchain

StockFlow API

RESTful inventory API where every stock movement is hashed and timestamped on the Bitcoin blockchain via OpenTimestamps. A SHA-256 proof per transaction makes the whole ledger provable, auditable and tamper-evident, behind JWT auth with migrations and Postman docs.

PythonFlaskPostgreSQLSQLAlchemyJWTOpenTimestamps

Serverless · AWS

Async Job API

Event-driven job API built with AWS SAM. POST /jobs persists to DynamoDB and enqueues to SQS, returning 202 instantly; a decoupled Lambda worker consumes the queue, processes the job, writes results to S3 and serves them via presigned URLs.

PythonAWS SAMLambdaSQSDynamoDBS3

AI · Multi-agent

NeuraAI

Deep-research agent modeled as a LangGraph state machine: a planner breaks a query into sub-questions, conditional edges fan out parallel search nodes over the Tavily API, and a writer node synthesizes a cited answer. Fully async on FastAPI.

PythonFastAPILangGraphLangChainOpenAITavily

Networking · TCP

Call Center Queue

Client-server call center over raw TCP with Twisted. A line protocol handles call/answer/reject/hangup commands while the server tracks operator state, a waiting queue and per-call timeouts. Client and server ship as separate Docker images.

PythonTwistedTCP SocketsDocker

Security · CLI

CipherMail

End-to-end encrypted messaging CLI. Messages are sealed with Fernet symmetric encryption, passwords hashed with SHA-256, and data persisted in MongoDB through PyMongo. Managed with Poetry and published to Docker Hub.

PythonMongoDBFernetDocker

Mobile · Full-stack

MesclaInvest

Simulated startup investment platform (PUC-Campinas integrator project). A Flutter/Dart app drives a Node.js + TypeScript backend on Firebase Cloud Functions, with Firestore, Firebase Auth (email, CPF, optional MFA) and a simulated token trading desk over a fictional BRL wallet.

FlutterDartNode.jsTypeScriptFirebase

Computer vision · Web

Image Cartoonizer

Flask app that cartoonizes uploads through an OpenCV pipeline: grayscale conversion, median blur and a bilateral filter for a smooth black-and-white look. Handles multipart uploads, duplicate detection, a gallery and per-image metadata in SQLAlchemy, containerized behind Nginx.

PythonFlaskOpenCVDockerNginx

Game · Java

Dice of Destiny

Turn-based dungeon RPG in Java 21 with a clean OOP design: three hero classes, a dice-driven combat system with cooldown-based specials, items and escape mechanics, plus inventory management across six interconnected rooms.

Java 21OOP

Want to see more or talk through a collaboration?

View all on GitHub

[ 04 / 06 ]·assistant

Terminal-native · RAG + LLMs

Meet my AI assistant

Ask about my experience, projects and stack, in your language, by text or voice. She answers in real time.

Terminal UI with slash commands (/projects, /whoami, /stack…)
Streaming answers, token by token
Multilingual, replies in the language you ask
Text or voice input

Powered by Lectern·Open sourceThe backend that answers here is mine, and it is open source. Declare an identity, add your documents, and run the same API on your own site, product or company. Apache-2.0.

$ curl -X POST
  --data "hi!"
  > 200 OK

[ 06 / 06 ]·contact

Let's Talk

I'm always open to discussing new opportunities and interesting projects

Contact Information

Feel free to contact me through any of the channels below.

[email protected]

Location

Campinas, SP - Brazil

Status

Open to new projects and collaborations

GitHub LinkedIn

Interested in collaborating?

I'm always open to discussing interesting projects, work opportunities or simply exchanging ideas about technology.

Send a Message

Fill out the form below and I'll get back to you soon.

[ let's talk ]

Let's build something

Let's connect, whether to talk architecture, work through a hard problem, or just build good software.