Lead Software Engineer - Reliability

Socket.dev

Miami (FL)

On-site

USD 100,000 - 130,000

Full time

14 days+

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Benefits offered by this job

Equity opportunity at Nubank

Medical Insurance

Dental and Vision Insurance

Life Insurance and AD&D

Extended maternity and paternity leaves

Learning platform of courses (Nucleo)

Mental health and wellness assistance program (NuCare)

401K

Health Savings Account and Flexible Spending Account

Work-from-home Allowance

Relocation Assistance Package, if applicable

Job summary

Nubank is seeking an engineer in Miami to launch a financial product in the U.S. Market, focusing on reliability, scale, and operational excellence.

The ideal candidate will improve system reliability, lead incident responses, and take ownership of production services. Experience with observability tooling and deep system design is crucial.

This role offers equity opportunities and comprehensive health and wellness benefits.

Qualifications

Track record of owning services in production and handling real failure.
Experience in influencing product decisions through error budgets.
Hands-on experience with production issue diagnosis and observability.

Responsibilities

Define and operate against SLOs with product and engineering partners.
Lead incident response and drive improvements through post-mortems.
Implement observability layers to detect issues early and effectively.

Skills

SLOs/SLIs definition

Incident response leadership

Observability tooling

Deep system design

Production software systems

Cloud environments

Technical leadership

Pragmatism in deployment

Job description

Nu is one of the largest digital financial platforms in the world, with more than 127 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and this is still just the beginning of the purple future we're building.

Listed on the New York Stock Exchange (NYSE: NU), we combine proprietary technology, data intelligence, and an efficient operating model to deliver financial products that are simple, accessible, and human.

Our impact has been recognized by global rankings such as Time 100 Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Bank. Visit our institutional page https://international.nubank.com.br/careers/

About the role

The U.S. Market team is launching a differentiated financial product in the largest and most demanding financial market in the world. We’re iterating quickly on real customer signals while building systems that will eventually serve customers at Nubank scale. That combination — early‑stage velocity, regulatory weight, and high reliability expectations, requires an engineer whose primary mandate is reliability, scale, and operational excellence.

This role exists to make sure the systems we’re building today can be trusted in production tomorrow, and to set the bar for what “production‑ready” means on this team. The engineer in this role delivers their mandate by writing production code, shaping architecture, and engineering the systems themselves — not by absorbing operational load.

You’ll be responsible for

Define and operate against SLOs. Establish meaningful SLIs and SLOs with product and engineering partners, manage error budgets, and use them as real inputs to prioritization rather than dashboards no one reads.

Build the observability layer. Improve metrics, logs, traces, and alerting so issues are detected early, attributed precisely, and debugged with code‑level confidence. Push instrumentation upstream into the services we own.
Lead incident response. Act as incident commander when needed, drive blameless post‑mortems, and turn findings into concrete engineering work that lands. Build the muscle in the team so this isn’t centralized in any one person.
Reduce toil through engineering. Identify repetitive operational work and eliminate it with software — automation, self‑healing behavior, better defaults, better tooling — rather than absorbing it as ongoing overhead.
Production Hardening. Stress‑test designs for partial failure, dependency degradation, traffic spikes, and adversarial inputs. Run capacity and performance work before incidents arise. Ensure resiliency primitives are tuned and working correctly.
Make change safe and fast. Improve release safety through progressive delivery, feature flags, canaries, rollbacks, and tested migrations. Help the squad ship faster and with lower blast radius.
Improve developer experience especially where it removes operational friction or improves change safety. Where internal tooling or platform gaps slow the team down, build or contribute the fix. Prefer leverage over heroics.
Partner across disciplines. Work closely with product, platform, security, compliance, and other engineering teams. Translate reliability and risk tradeoffs into language each audience can act on.
Raise the engineering bar. Mentor engineers, review hard designs and PRs, and shape technical standards across the squad. Lead through clarity and judgment, not authority.

We are looking for a person who has

Track record of owning services in production — not just shipping them, but being the engineer responsible for how they behave under real load and real failure.

Experience defining and operating against SLOs/SLIs, and using error budgets to influence engineering and product decisions.
Experience leading incident response and writing post‑mortems that produced durable improvements.
Hands‑on experience with observability tooling (metrics, structured logging, distributed tracing) and using it to diagnose nontrivial production issues.
Deep system design experience: distributed services, asynchronous messaging, storage tradeoffs, API design, idempotency, consistency, backpressure, and graceful degradation.
Significant industry experience building and operating production software systems in a high‑ownership engineering environment.
Comfort operating in modern cloud environments (e.g., AWS/GCP), containerized workloads, and CI/CD pipelines, and reasoning about their failure modes.
Demonstrated technical leadership: influencing architecture across teams, mentoring strong engineers, and making the people around you better.
Pragmatism. You can hold a high reliability bar while still helping a fast‑moving squad ship.

Location for this opportunity (City, Country)