Senior Secure Provisioning Software Engineer at NXP developing Python - based provisioning solutions. Responsible for designing and maintaining secure device workflows and collaborating across cross - functional teams.
About the role
- Senior Full Stack Developer at Stefanini developing applications for retail and backend services ensuring high availability and performance.
Responsibilities
- Develop and evolve the front-of-store (POS) application and associated backend services, ensuring high availability, performance, and an excellent user experience.
- Work on integration and certification of POS terminals with Brazilian payment acquirers and participate in the app release cycle.
- Implement end-to-end features: mobile (React Native) and backend (Node.js/TypeScript).
- Integrate and certify acquirer SDKs/APIs and Android POS devices (credit/debit testing, installments, refunds, contactless, logs and evidence collection).
- Participate in the app publishing process (Google Play/App Store) or corporate/MDM distribution: versioning, signing and tracks.
- Develop and maintain REST APIs, integrations with legacy systems and third-party services.
- Write tests, perform code reviews and collaborate on continuous improvement of quality and performance.
- Monitor and assist in troubleshooting production incidents, with team support.
- Document technical flows, integrations and relevant decisions.
- Participate in agile ceremonies, estimation and planning.
- Support pilots and field certifications when necessary (occasional travel).
Requirements
- Experience in software development (at least Mid-level), including:
- React Native (Android focus)
- Node.js and TypeScript (REST APIs)
- Integration with SDKs/APIs and best practices for payment flows (idempotency, error handling and timeouts)
- Relational database (PostgreSQL) and writing performant queries
- Git, basic CI/CD pipelines and environment organization (dev/staging/production)
- Monitoring and logging basics (Sentry, CloudWatch, Grafana/Kibana) focused on transaction traceability (plus)
- Security and LGPD (Brazilian data protection law) applied to apps and APIs (secure storage, encryption, tokens)
- Technical English for reading documentation and SDKs
- Native Android knowledge (Kotlin/Java) (plus)
- Practical experience publishing apps (Google Play Console and/or App Store Connect) or corporate/MDM distribution (plus)
- Experience with Brazilian acquirers/TEF (Cielo, Rede, Stone, Getnet, PagSeguro, Adyen, PayGo or SiTef/M-SiTef) (plus)
- Experience with Android POS and SDKs (Gertec, Ingenico, Tectoy/Sunmi) (plus)
- Offline-first strategies, queues/messaging (SQS) (plus)
- POS fiscal knowledge (NFC-e, SAT, CF-e/MFE) and printer integration (plus)
- AWS (EC2/Lambda/SQS/Secrets), Docker and observability (plus)
- Mobile E2E testing (Detox) and TDD/BDD (plus)
- React Native performance optimization (Hermes, Reanimated, memoization) (plus)
- NoSQL databases (plus).
Benefits
- Meal allowance or food voucher
- Discounts on courses, universities and language schools
- Stefanini Academy — platform with free, up-to-date online courses and certificates
- Mentoring
- Health benefits for consultations and exams
- Medical insurance
- Dental insurance
- Discount club with benefits at top establishments
- Travel club
- Pet health plan
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
No Education Requirement
Tech skills
Location requirements
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