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Victor Bona · Press kit

Everything needed to introduce, interview or feature Victor Bona. Bios are written in third person and can be used as is.

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Role
Senior Software Engineer, Hopper
Focus
Distributed systems, observability, financial infrastructure
Experience
8 years · Amazon, Valari (YC W22), Deel, Hopper
Based in
Blumenau, Brazil (UTC−3)
Interviews in
Portuguese, English

Biography

Short bio

Victor Bona is a Senior Software Engineer at Hopper and a distributed systems specialist. In 8 years he has built financial infrastructure at Amazon, Valari (YC W22) and Deel, founded and sold the Kubernetes platform Guara Cloud, and publishes independent research on observability and messaging systems. He is based in Blumenau, Brazil.

Long bio

Victor Bona is a Senior Software Engineer at Hopper and a distributed systems specialist with 8 years of experience building software where correctness matters. At Amazon he worked on the Brazilian fintech team, building systems for the company's financial and regulatory obligations. As the first founding engineer at Valari (YC W22), a Latin American banking-as-a-service company, he designed its distributed architecture and rebuilt its ledger within one week after a third-party provider shut down. He later built payroll and HR features at Deel.

In 2026 he founded Guara Cloud, a Kubernetes platform hosted in São Paulo and billed in reais, built it as its sole engineer and sold it the same year. He maintains open-source Rust projects, including the Nidus backend framework and the E-Navigator eBPF agent, and publishes reproducible research on distributed tracing and message brokers, with DOI-registered preprints on Zenodo. He is based in Blumenau, Brazil, and gives interviews in Portuguese and English.

Também em português

Bio curta

Victor Bona é Engenheiro de Software Sênior na Hopper e especialista em sistemas distribuídos. Em 8 anos de carreira, construiu infraestrutura financeira na Amazon, na Valari (YC W22) e na Deel, fundou e vendeu a plataforma Kubernetes Guara Cloud e publica pesquisas independentes sobre observabilidade e sistemas de mensageria. Vive em Blumenau, Santa Catarina.

Bio longa

Victor Bona é Engenheiro de Software Sênior na Hopper e especialista em sistemas distribuídos, com 8 anos de experiência construindo software em que a correção é inegociável. Na Amazon, integrou o time de fintech no Brasil, desenvolvendo sistemas para as obrigações financeiras e regulatórias da empresa. Como primeiro engenheiro fundador da Valari (YC W22), empresa latino-americana de banking-as-a-service, desenhou a arquitetura distribuída e reconstruiu o ledger da empresa em uma semana após o encerramento de um fornecedor. Depois, desenvolveu funcionalidades de folha de pagamento e RH na Deel.

Em 2026, fundou a Guara Cloud, plataforma Kubernetes hospedada em São Paulo e cobrada em reais, construiu-a como único engenheiro e a vendeu no mesmo ano. Mantém projetos open source em Rust, como o framework backend Nidus e o agente eBPF E-Navigator, e publica pesquisas reprodutíveis sobre rastreamento distribuído e brokers de mensagens, com preprints registrados com DOI no Zenodo. Vive em Blumenau (SC) e concede entrevistas em português e inglês.

Photos

Victor Bona

Square headshot, 768 × 768 px, WebP. Free to use with credit to Victor Bona.

Download headshot ↓

[pending] higher-resolution originals (print quality) available on request

Expertise

  • Distributed systems and messaging

    Delivery guarantees, recovery, event-driven architecture.

  • Observability

    Tracing, sampling costs, eBPF, telemetry storage.

  • Financial infrastructure

    Ledgers, banking-as-a-service, payroll.

  • Platform engineering

    Kubernetes, GitOps, running a PaaS end to end.

  • Systems programming in Rust

    Frameworks, storage engines, kernel-side agents.

  • Reproducible engineering research

    Benchmarks with published raw data, negative results included.

Suggested interview topics

  1. 01

    Rebuilding a bank ledger in one week

    What happens when a fintech loses the provider behind its money, and how to rebuild the source of truth under pressure.

  2. 02

    Building and selling a cloud platform alone

    A Brazilian PaaS from first commit to sale in eight months, with one engineer and real paying tenants.

  3. 03

    What “acknowledged” really means

    Measured differences between Redis Streams and NATS JetStream, and why durability claims need evidence.

  4. 04

    The real cost of observability

    When trace sampling saves money, when it costs more, and how to decide before picking a rate.

  5. 05

    From southern Brazil to global tech

    A career across Amazon, a YC startup, Deel and Hopper, built from Blumenau.

  6. 06

    Engineering that publishes its losses

    Shipping open source with proof reports, failed benchmarks and non-claims next to the wins.

Verifiable results

  • Founded, built and sold Guara Cloud

    Sole engineer; in production from March 2026, sold the same year; 9 worker nodes and 58 tenant namespaces.

    evidence →

  • Rebuilt Valari's ledger in one week

    After a third-party provider shut down, as founding engineer at a YC W22 fintech.

    evidence →

  • Nidus: 25 crates, 20 releases

    Rust backend framework; every release verified on crates.io; 647 tests passing at 1.2.0.

    evidence →

  • E-Navigator: 1,148 ms to 0.46 ms

    Median first-signal latency for new Kubernetes Pods, over five counterbalanced runs.

    evidence →

  • Peer-checkable research

    DOI-registered preprints with raw data, analysis code and Lean 4 proofs published.

    evidence →

Publications

Presentations

[pending] no recorded talks listed yet

Available for podcasts, interviews, talks and panels, in Portuguese or English.

Invitations and contact

email
victor.bona@hotmail.com
linkedin
in/victorbona
x
@BonaVictor
timezone
America/Sao_Paulo (UTC−3)
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