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zlovtnik/readme.md

Hi there, I am Rafael

I am a CTO and hands-on software engineer with more than 15 years of experience building integration platforms, distributed systems, backend services, and data pipelines for regulated and enterprise environments.

About Me

My background combines deep engineering experience with practical technical leadership.

I specialize in:

  • Distributed and event-driven systems
  • Enterprise integration and ETL platforms
  • Backend services and APIs
  • High-volume financial and fiscal processing
  • Reliable data ingestion and transformation
  • Cloud native delivery and production operations
  • Technical direction, architecture reviews, and engineering mentorship

At Synchro, I progressed from Software Analyst to Senior Staff Software Engineer. I designed and supported Oracle and SAP fiscal integrations, including an invoicing flow that processed about 2 million transactions per week, and guided engineering teams of 3 to 8 people.

I enjoy solving the difficult parts of backend and data engineering: unclear requirements, complex integration boundaries, unreliable upstream systems, recovery behavior, data correctness, performance, and production visibility.

Skills and Tools

Architecture and Engineering

Distributed systems, event-driven architecture, enterprise integration, data pipelines, ETL, service architecture, resilience, observability, technical leadership

Languages

Java, Scala, Rust, Go, SQL, PL/SQL, TypeScript, Python, Bash

Integration and Messaging

Apache Camel, Kafka, Redpanda, Oracle Integration Cloud, Oracle BPEL, XSLT, REST, SOAP, gRPC, GraphQL

Databases and Data Platforms

Oracle, PostgreSQL, TiDB, pgvector, Redis, MinIO

Cloud and Delivery

Kubernetes, Kustomize, Argo CD, Docker, Oracle Cloud, CI/CD, GitOps

Observability

OpenTelemetry, Prometheus, Grafana, Loki, Jaeger

How I Work

I am comfortable moving between strategy and implementation.

I can define an architecture, challenge its assumptions, write critical code, review production behavior, improve delivery practices, and help a team understand why the system behaves the way it does.

I care about systems that are:

  • Correct and traceable
  • Reliable under failure
  • Observable in production
  • Maintainable by the next engineer
  • Designed around real operational constraints
  • Simple enough to evolve safely

What I Am Looking For

I am open to Senior or Staff Backend Engineering, Data Platform Engineering, ETL and Integration Engineering, and technical leadership opportunities where I can:

  1. Design and build reliable backend services and APIs
  2. Own complex ETL and data integration platforms from requirements through production
  3. Work with modern JVM, Rust, Go, and cloud native systems
  4. Improve architecture, reliability, delivery, and engineering practices
  5. Collaborate closely with product, data, operations, and engineering teams
  6. Build systems where correctness and operational resilience genuinely matter

Pinned Loading

  1. schema-migrator schema-migrator Public

    Experience a powerful, deterministic, retry-safe schema migration engine built with Scala 3, Cats Effect, and Doobie. This tool efficiently discovers ordered SQL files, validates dependencies, lock…

    Scala

  2. ssl-proxy ssl-proxy Public

    A privacy-focused transparent proxy and VPN system with wireless audit capabilities, vector embeddings for device intelligence, and Oracle-backed audit persistence.

    Rust

  3. wg-key-rotator wg-key-rotator Public

    Small Elixir controller for scheduled WireGuard security rotation.

    Elixir