About UsNova is a new generation payment network, poised to disrupt Visa and Mastercard, by leveraging real time payment infrastructures like Brazil's Pix & Open Finance for all daily transactions. The company empowers consumers to pay anything, any way they like, in any installment number, regardless of what payment options are available at checkout.It's building a layer on top of Pix & Open Finance to improve last-mile payment functionalities such as financing (credit and installments), fraud protection (chargebacks and insurance) and friction (tap to pay for consumers, high auth rates for merchants).Nova was founded at the end of 2023 by an elite team of fintech veterans. It just raised a Series A with leading venture capital funds and is now expanding its team.Key ResponsibilitiesWe are looking for an outstanding engineer to join our team, as such you'll play a pivotal role in:Designing and evolving our credit card infrastructure — the systems behind issuing, limits, transactions, billing, and rewards; Making the foundational technical decisions that will scale from MVP to high-volume production; Building and shipping the core services that handle authorization, limit management, statements, installments, and credit lifecycle operations; Leveraging AI tools and modern development practices to ship faster and with higher quality than would otherwise be possible; Setting the technical bar for the team, mentoring engineers, and being a force multiplier across the engineering org; Shaping our engineering culture, championing best practices, long-term thinking, and a bias for shipping.This is your chance to be a protagonist at work, working on challenging projects with a meaningful impact, as part of a select team of elite engineers in a uniquely ambitious new payment network company.SummaryAs a Backend Engineer at Nova, you'll own services end-to-end — from design to production. You'll work in a microservices environment built on Go, Kafka, and GraphQL, shipping features that directly impact how money moves for our customers. We care deeply about clean code, observable systems, and engineers who take pride in what they build.What You´ll DoDesign, build, and maintain backend services in GoContribute to our event-driven architecture using Kafka and GraphQLWork closely with product and other engineers to define technical solutionsImprove system reliability, observability, and performanceParticipate in on-call rotation and respond to production incidentsContribute to architectural decisions and technical design reviewsWhat You´ll Bring8+ years of experience building and operating production backend systemsProficiency in Go or strong experience with another statically-typed compiled language and a genuine interest in learning GoSolid understanding of distributed systems — concurrency, fault tolerance, eventual consistencyExperience with event-driven or async communication patterns (Kafka, RabbitMQ, or similar)Hands-on experience with PostgreSQL or another relational databaseExperience with AWS and containerized environments (Docker + Kubernetes)Strong debugging skills and ownership mentality — you care how your service behaves in productionNice to havesExperience with Temporal or other workflow orchestration toolsFamiliarity with GraphQLExperience with Infrastructure as Code (Pulumi, Terraform, or similar)Background in fintech, payments, or other regulated industriesExperience with Domain-Driven Design or Clean Architecture patternsIdeal ProfileAcademicPreferred Bachelor's degree in Computer Science or related fieldsPreferred Master/PhD degree in Computer Science or related fieldsProfessionalRequired 7+ years of experience with modern, technically advanced companies, with a meaningful portion at top-tier credit card issuers (Nubank, XP, Inter, C6, Willbank, Cora, PicPay, RecargaPay, or equivalent)Required deep hands-on experience with AI-native development workflows (Cursor, Copilot, Claude Code, or equivalent) and a proven ability to leverage them to ship faster and betterPreferred experience with credit card systems — issuing, limits, authorization, statements, installments, or rewardsPreferred experience with early-stage start-ups, specially 0 to 1 stagePreferred experience with fintech, specially payments in BrazilSuccess Track RecordPreferred graduated from top schools and/or with top gradesPreferred participated and/or won in competitions, received work-related awardsPreferred active leader in the community, has published articles, given lectures etc.Preferred other demonstrable proofs of ambition, intelligence and/or resilienceSoft SkillsRequired Commitment: hard working, very responsible and dependable; Can be counted on by the team, delivers all agreed work even in the face of challenges; Willing to put in the hours and make sacrifices to make it work, no matter whatRequired Resourcefulness: makes the most of available resources while balancing ideal solutions with practical constraints (e.G. time, budget etc.), has a willingness to learn and the capability to adapt to continuously changing circumstances, technologies, and priorities; Required Collaboration: enjoys team work, is transparent and in touch frequently with the whole team, communicates well (eloquently and swiftly) and is always willing to help; Is polite, thoughtful and kind, continuously build trust with all relevant stakeholders; Other RequirementsLanguage: Required at least Full Professional Proficiency in EnglishLocation: Required 3x a week (Tue, Wed and Thu) in office (Vila Madalena, São Paulo)Compensation & BenefitsModel: PJStock Option: Aggressive stock option grantsPaid VacationsPremium Health InsuranceWellhubIf you're excited about building the rails of the next generation payment network alongside a small team of high-caliber engineers, we'd love to hear from you. 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