Senior Fullstack Engineer
HybridSão Paulo, São Paulo, Brazil
Job Summary
Own the full integration lifecycle for partners and customers, running Phase 0 qualification assessments to map systems, data flows, and risk surfaces before committing to timelines. Build and configure integration connectors, data mappings, and partner adapters using Clara's integration framework, acting as the primary technical point of contact throughout the build. Coordinate directly with partner technical teams and Platform/API squads to leverage core primitives like webhooks and auth patterns, ensuring every integration meets standards for idempotency, observability, and data minimization. Drive clean handoffs by delivering runbooks, dashboards, and support playbooks, while feeding learnings back into the platform to identify patterns for shared libraries.
Required Qualifications
- Experience working directly with external partners or customers in a technical capacity, you're comfortable owning the relationship, not just the code
- Working directly with end customers
- Designing the solution from scratch to meet customer needs
- Great communication skills
- 4+ years of backend software development experience, with hands-on exposure to API integrations, webhooks, and data mapping
- Deep fluency in integration patterns: REST, event-driven architectures, OAuth/token management, idempotency
- Ability to move fast in ambiguous environments: qualify a new integration request, scope it, and start building within days
- Strong proficiency in one or more backend languages (preferably Java) and comfort working across multiple systems and tech stacks
- Working knowledge of observability fundamentals: logs, metrics, tracing, alerting, and SLOs
- You use AI tools as a force multiplier, from scaffolding connectors to automating repetitive mapping work
- Working proficiency in English and Spanish, or English and Portuguese
- Excellent communication skills with both technical and non-technical audiences
- Exposure to integration platforms or connector frameworks (e.g. N8N, Zapier, or custom-built equivalents)
- Must be able to lift 50 lbs
Desired Qualifications
- Experience in fintech, payments, or financial data infrastructure
- Familiarity with PCI/PII data handling and compliance requirements
- Experience with AWS, Kafka, or event streaming platforms
- Proficiency in all three languages (Portuguese, Spanish, and English) is a strong plus
- A good sense of humor
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