Staff Software Engineer - Payments Gateway

Socket.dev; Belo Horizonte; Presencial; BRL 120 000 - 160 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Chance of earning equity

Food / Meal Card

Public Transportation Commuting Benefit

NuCare – Psychological, Financial, and Legal Assistance

Life Insurance

Medical Plan

Dental Plan

NuLanguage – Language Course Program

Nucleo – Learning platform

Extended Parental Leave

Daycare Allowance

Work-from-home Allowance

Gym Partnerships

30 days of paid vacation

Relocation Assistance Package

Resumo da oferta

Nubank is seeking a Staff Software Engineer – Payments Gateway in Belo Horizonte, Brazil. This role involves designing a secure payments gateway backend for POS and Tap to Pay systems, focusing on high-scale transaction processing and integration with external partners.

Applicants should have strong experience in backend engineering, particularly related to payments protocols like ISO 8583. The position offers a hybrid work model, along with comprehensive benefits including equity opportunities, health plans, and extended vacation.

Qualificações

• Experience in designing and operating high-scale, mission-critical systems.
• Experience with payment networks and transaction processing.
• Ability to mentor and share knowledge effectively.

Responsabilidades

• Design and build Nubank's payments gateway backend.
• Verticalize partner-provided capabilities.
• Integrate with acquirers and networks for seamless transactions.

Conhecimentos

Payments / POS / acquiring backends

Hands-on experience with ISO 8583

Strong communication skills

Technical leadership

Experience in transaction processing

Formação académica

Staff-level backend engineering experience

Descrição da oferta de emprego

Staff Software Engineer – Payments Gateway

About the role

You will join the engineering group behind Nubank’s Acquiring solutions, as Tap to Pay (TAP) experiences — turning phones and dedicated terminals into secure, reliable payment devices for our merchants.

As a Staff Software Engineer – Payments Platform, you will lead the design and implementation of our systems for authorization, clearing and settlement.

Today we rely heavily on partners (e.g., Zoop); our strategic direction is to verticalize: building our own Payments SDKs and gateway to reduce dependency, gain end-to-end observability, and control core parts of the merchant experience.

This is a high-impact role: you will both build critical gateway components and act as a key knowledge source on payments protocols and acquiring, seeding expertise across multiple squads (TAP, Acquiring platforms) over a 3–5 year roadmap.

You’ll be responsible for

• Designing and building Nubank’s payments gateway backend that processes POS and Tap to Pay transactions after they leave the terminal, acting as the core authorization and routing layer between our devices and external acquirers/partners.
• Verticalizing partner-provided capabilities by developing our own Payment SDK
• and gateway, reducing reliance on third parties for transaction processing and improving observability, stability and control over the end-to-end flow.
• Designing architecture for constrained Payment environments, collaborating with embedded/mobile teams to account for hardware peripherals (NFC, EMV readers, printers), offline/latency-sensitive flows, and tight data-plan limits on terminals.
• Acting as a technical bridge between our acquiring solutions, ensuring both surfaces share a robust, scalable core transaction processing flow while serving different form factors and partners.
• Integrating with acquirers and networks, designing robust flows for authorizations, settlements and error handling, and progressively increasing our ownership of these interactions.
• Leading long-term platform design (3–5 years) for acquiring and gateway, ensuring we build scalable, reusable components instead of point solutions, and that we can support new products and geographies over time.
• Seeding and multiplying domain knowledge: running whiteboard sessions, design reviews and knowledge-sharing routines so that other backend engineers can learn POS/acquiring patterns and contribute effectively.
• Collaborating with external experts and partners, representing Nubank in technical discussions with vendor and acquirer engineering teams, and shaping agreements and interfaces that allow our platform to scale cleanly.

We are looking for a person who has

Required

• Staff-level backend engineering experience (or equivalent) designing and operating high-scale, mission-critical systems.
• Strong background in payments / POS / acquiring backends, with experience in transaction processing and connectivity with acquirers and/or payment networks.
• Hands‑on experience with ISO 8583 (or very similar card-payment protocols) and the surrounding concepts (authorization flows, reversals, settlement, offline/queued transactions).
• Experience working with or alongside POS / embedded / payments hardware teams, understanding constraints around peripherals, connectivity, offline behavior and latency.
• Proven track record designing and evolving gateways or switches that connect to multiple acquirers or processors.
• Ability to operate as a technical leader and knowledge-multiplier: mentoring senior engineers, running structured design sessions and defining long-term technical direction.
• Strong communication skills and resilience: comfortable dealing with incidents, complex cross-team situations and external stakeholders, and able to keep discussions productive under pressure.
• Proven experience with PCI DSS v4.0 compliance standards, with the ability to design architectures that ensure secure isolation of the CDE (Cardholder Data Environment) and meet payment data security requirements.
• Comfort working in a hybrid model in Brazil (São Paulo or Belo Horizonte) collaborating in English and Portuguese across local and global teams.

Nice to have

• Experience at companies that have internalized POS/acquiring stacks (e.g., Mercado Pago, PagBank, Stone, Infinity Pay, or similar players).
• Previous work on Tap to Pay or SoftPOS solutions.
• Familiarity with regulatory and compliance aspects of card-present payments in Brazil.

Location for this opportunity

• Brazil – Hybrid hubs: São Pauloor Belo Horizonte (aligned with Nubank’s official office locations).

Work Model for this Role

• Hybrid 2–3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration.

Our Benefits – Brazil (Employee, Hybrid)

• Chance of earning equity at Nubank
• Food / Meal Card (Vale-Refeição and/or Vale-Alimentação)
• Public Transportation Commuting Benefit (Vale-Transporte)
• NuCare – Psychological, Financial and Legal Assistance Program
• Life Insurance
• Medical Plan
• Dental Plan
• NuLanguage – Language Course Program
• Nucleo – Our learning platform of courses
• Extended Parental Leave
• Daycare Allowance
• Parental Consultancy
• Work-from-home Allowance
• Gym Partnerships
• 30 days of paid vacation
• Relocation Assistance Package, if applicable

Join us

If you want to build the payments gateway that will power Nubank’s POS and Tap to Pay products — combining deep industry protocols, large-scale backend engineering and long-term platform design — we’d love to hear from you.

Apply now to be our Staff Software Engineer – Payments Gateway in Brazil.