Cloudwalk10d ago

Staff Engineer – Issuing

São PauloRemoteFull Time - remotelead

OtherStaff Engineer

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Quick Summary

Overview

At CloudWalk, we are building the core infrastructure behind our credit card operation — from authorization to clearing — handling real-world financial transactions at scale.

Technical Tools

OtherStaff Engineer

At CloudWalk, we are building the core infrastructure behind our credit card operation — from authorization to clearing — handling real-world financial transactions at scale.

This is not a typical backend role.

You will work on systems where latency matters, correctness is critical, and failures have real impact.

The Role

You will design and build the systems that authorize, process, and reconcile transactions in real time — ensuring performance, correctness, and security at every step.

Our stack is heavily based on Rust, and we operate with full ownership of the issuing flow, including authorization, clearing, and ledgering.

• Build and operate high-performance services in Rust

• Own critical paths in the issuing flow (authorization, clearing, ledger)

• Design systems for low latency, high reliability, and fault tolerance

• Debug complex production issues involving real money

• Ensure system integrity and correctness across all transaction flows

• Drive architecture decisions across teams

• Strong experience with distributed systems

• Solid understanding of concurrency, consistency, and fault tolerance

• Experience with high-reliability systems (fintech, infra, etc) is a plus

• Experience with Rust, or willingness to go deep into it

• Hands-on mindset and strong debugging skills

AI as a Multiplier

We use AI as part of how we build.

• Leverage AI tools to accelerate development and debugging

• Improve engineering workflows using automation and agents

• Increase team throughput without compromising quality

Security by Design

Security is not a separate layer — it is part of how we build systems.

• Design systems that are secure by default

• Handle sensitive financial data with strict guarantees

• Ensure integrity and correctness across all transaction flows

• Build systems where incorrect behavior is not acceptable

• move real money

• run under strict latency constraints

• must be correct all the time

• operate at real-world scale

This is engineering where things actually matter.

Location & Eligibility

Where is the job

Worldwide

Fully remote, anywhere in the world

Who can apply

Same as job location

Listed under

Worldwide

Listing Details

Posted: April 20, 2026
First seen: April 20, 2026
Last seen: May 1, 2026

Posting Health

Days active: 10
Repost count: 0
Trust Level: 53%
Scored at: May 1, 2026

Signal breakdown

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Cloudwalk

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CloudWalk is a global financial technology company that pioneers AI and blockchain-driven solutions, including payment processing and digital banking, through its brands InfinitePay (Brazil) and JIM.com (U.S.).

Employees

750

Founded

2013

Domain

Jobs

External application · ~5 min on Cloudwalk's site

Please let Cloudwalk know you found this job on Jobera.