Integration Engineer

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Light

WebsiteLinkedInAll Job Openings

5001 - 10000 employees

Founded 1905

⚡ Energy

👥 B2C

🤝 B2B

Energy • B2C • B2B

Light is a Brazilian electric utility that generates, distributes and commercializes electricity to residential and commercial customers in the Rio de Janeiro area. The company provides billing and customer services (online and in-person), grid maintenance and expansion, anti-theft and emergency response operations, programs for energy efficiency, distributed generation and sustainability, and community and cultural initiatives.

📋 Description

• Build and operate the integrations that let Light plug into multi-tenant banking APIs (J.P. Morgan, HSBC, and peers) • Handle the realities of bank integrations: certificate-based and mTLS auth, OAuth flows, ISO 20022 and legacy MT formats • Design integrations where credentials, configuration, and data are isolated per tenant • Connect Light to e-invoicing networks and country-specific mandates • Manage compliance-driven edge cases, and keep delivery auditable • Ensure idempotency, retries, webhook and polling strategies, dead-letter handling, and end-to-end reconciliation

🎯 Requirements

• 4-6 years of experience ideally • You build things. Not prototypes, not demos. Working software in production, doing something real for real users. This is the non-negotiable. • You've built integrations against unforgiving external systems. APIs you don't control, that fail in ways the docs don't mention, where correctness is contractual. • You know banking and payments APIs. Direct, hands-on experience with corporate banking, treasury, or payments APIs is what sets the strongest candidates apart. • You are excited about AI. You use AI tooling efficiently to improve your work. • You're comfortable across the stack. You don't need to be a specialist in everything, but you can't have a lane you refuse to leave. • You care about data integrity. You think about the person on the other end and the money moving between them. You notice when a flow is correct but fragile, and you act on it. • You ship early and often. Small batches. Learn. Go again. You'd rather put something real in front of a customer than spend another week perfecting it in isolation.

🏖️ Benefits

• A competitive salary + potential stock options • 25 days of annual leave + public holidays in the country where you are based • Regular socials and company off-sites • A huge opportunity for career growth as you'll help shape a market-defining product