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Kstack

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8 jobs
Kstack
2 days ago

Desenvolvedor(a) Java Sênior – Clearing & Settlement

NewBe an early applicant HybridLATAM
Brazil

Senior Java developer building and sustaining the card clearing & settlement systems of an acquiring operation — generating outgoing/processing incoming files for Visa (Base II), Mastercard (IPM) and Elo, handling disputes/chargebacks, reconciliation and semiannual scheme mandates. Stack: Java 11+, Spring Boot/Batch, SQL, Kafka, Docker.

AWS Azure CI/CD Cloud COBOL +21 skills
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Kstack
2 days ago

Desenvolvedor(a) Java Especialista – Autorização de Transações

NewBe an early applicant HybridLATAM
Brazil

Senior Java specialist to technically lead the transaction authorizer for Kstack's card-acquiring operation, integrating online with brands like Visa, Mastercard and Elo. Day to day: building millisecond-level ISO 8583 authorization flows, EMV/HSM cryptographic security, fraud-engine integration and brand certification releases, hybrid in São Paulo or Belo Horizonte.

API AWS Azure CI/CD Cloud +25 skills
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Kstack
4 days ago

Senior SAP ABAP Developer

NewBe an early applicant HybridLATAMSenior
Brazil

Senior SAP ABAP developer designing, building, and maintaining modern SAP applications and extensions using RAP, SAP BTP, OData services, SAP Fiori, and Eclipse/ADT. Hybrid role based in São Paulo or Curitiba, Brazil, working with international stakeholders in fluent English.

ABAP Agile API Authentication CI/CD +18 skills
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Kstack
4 views 4 weeks ago

Desenvolvedor(a) Java Sênior — Barueri/SP

Open 24d On-siteLATAM
Brazil

Estamos buscando um(a) Desenvolvedor(a) Java Sênior para integrar o time de tecnologia. Buscamos um profissional com sólida experiência em desenvolvimento Java, com foco em Spring Boot e integração com bancos de dados,…

API CI/CD DevOps Docker Git +10 skills
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Kstack
11 views last month

QA Sênior

Open 30d On-siteEurope, LATAM

QA Sênior (Testes Automatizados) 📍 Local: Cuiabá/MT 🏢 Modelo: Presencial 📄 Contratação: CLT Sobre a oportunidade Buscamos um profissional com sólida experiência em Quality Assurance para atuar como referência…

API CI/CD C# Cypress Datadog +12 skills
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Kstack
21 views 2 months ago

Data Scientist

Open 46d HybridLATAM
Brazil

Experienced Data Scientist (São Paulo) who designs, trains, and deploys machine learning and statistical models end-to-end — from data prep and feature engineering to production monitoring — using Python, SQL, ML libraries, and cloud platforms, with optional work on GenAI/LLM solutions.

Agile AI Analytics AWS Azure +38 skills
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Kstack
21 views 2 months ago

Frontend React Developer

Open 46d HybridLATAM
Brazil

Builds and maintains enterprise web app UIs with React.js, TypeScript, and modern CSS, integrating REST/GraphQL APIs and optimizing performance in an Agile team. Works closely with designers and global engineers while leveraging AI-powered tools like Copilot and ChatGPT to speed up development and testing.

Accessibility Agile AI API Azure +36 skills
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Kstack
14 views 2 months ago

Senior UI Developer – (ReactJS / NestJS)

Open 46d HybridLATAMSenior
Brazil

Senior UI Developer building scalable, responsive web applications in a hybrid São Paulo role. Day to day spans front-end development with React.js and Next.js backed by NestJS services, all in TypeScript, plus writing unit tests with Jest/React Testing Library and mentoring junior developers.

Agile API CI/CD CSS Cypress +21 skills
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