01 / 04Live app
Toqui
Document management, from a multi-tenant backend to an app approved on both stores.
1.000+downloads
4,4★App Store
iOSAndroidWeb
App Store
Senior Backend Engineer
SeniorBackend Engineer
Caio Neves — Senior Backend Engineer | Java & Spring Boot | Microservices | Distributed Systems | AWS | Kafka | Observability
Guarulhos, SP
MJV Technology & Innovation (Bradesco Seguros)
Juri Ativos Judiciais
RUK
Mobi Logística
CreditHubSenior Backend Engineer with 4+ years of experience building scalable, resilient, and high-performance systems. Strong expertise in Java (Spring Boot), microservices, and cloud-native applications on AWS, with Kafka for asynchronous messaging, Kubernetes for orchestration, and observability with OpenTelemetry.
0+years of experience
−0%latency · 7s→2.5s
0platforms delivered
Where I've delivered
Click to see the resultsEd25519service-to-service signing
80%+test coverage
- Reusable observability libraries (Hexagonal Architecture + OpenTelemetry) standardized across multiple teams.
- Plug-and-play logging platform: Pino and Winston to Loki, Elastic, Datadog and CloudWatch.
- Ed25519 request signing with replay protection and key rotation, closing penetration-test findings.
- High-availability microservices for the insurance platforms.
−40%downtime
100k+pages at 95% accuracy
- Resilient API integrations with Circuit Breaker and retries, reducing downtime by 40%.
- Python parsers for extracting data from 100k+ legal document pages at 95% accuracy.
- Solvency analysis engine with risk-scoring models.
- Clean Architecture and DDD, improving maintainability and onboarding speed.
−65%latency (7s → 2.5s)
−70%manual review
- ICP-Brasil digital signature microservice with Spring Boot and Bouncy Castle.
- Audio pipelines with Python, AWS Lambda and S3 at 95% accuracy.
- Microservices on Docker and ECS: 40% faster deploys.
- Time-tracking validation in Node.js and PostgreSQL: 60% fewer audit errors.
500+requests per second
−40%load time
- Scalable backend with NestJS, GraphQL and PostgreSQL handling 500+ req/s.
- Offline-first architecture: 50% faster sync on poor connections.
- Redis caching for GraphQL: 35% lower latency, 45% less DB load.
SupportCredit Hub platform
Docsnew services
- Supported the Credit Hub services platform, the company's core product.
- Built and improved new services with associated technical documentation.
- Triaged and resolved daily incidents, maintaining continuous platform stability.
EducationTechnologist in Systems Analysis and DevelopmentCentro Universitário Eniac · 2024
LanguagesPortuguese and EnglishNative · Advanced
AWS CertificationAWS Certified Cloud Practitioner
Cloud fundamentals: core AWS services, security, billing, and architectural principles. Validates cloud computing technical competency issued by Amazon Web Services.
Amazon Web Services · 2024CertifiedShipped products
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02 / 04
Ruk Sign
Legally binding ICP-Brasil signatures in 4 signing modes.
ICP-BrasilSecurityContracts
Ver produto Contract builder
03 / 04
Ruk Time
Time tracking with photo and audio proof and configurable shift rules.
HRBusiness rulesMedia
Ver produto Timesheet
04 / 04
Live chat
Live presence, voice and attachments across 5 microservices.
Real-timeMicroservicesAudio
Ver produto Voice message
Production stack
JavaTypeScriptPythonSpring BootNode.jsNestJSGraphQLReactNext.jsReact NativeAngularPostgreSQLMongoDBRedisKafkaAWSDockerKubernetesTerraformOpenTelemetry
Projects, roles or a technical second opinion