Design and implement robust backend integrations across multiple systems (SaaS, APIs, internal services)
Build and maintain secure, scalable REST APIs
Design and operate event-driven systems (webhooks, async processing, retries, idempotency)
Implement authentication and authorization flows:
OAuth2 (authorization code, client credentials)
JWT (token validation, security considerations)
API Keys / HMAC when needed
Handle real-world integration challenges:
duplicated events
out-of-order data
partial failures
Debug and resolve production issues across distributed systems
Ensure proper logging, monitoring, and error handling
Participate in technical decision-making and trade-offs

4+ years of backend experience
Strong experience with Node.js (deep understanding of async I/O and event loop behavior)
Solid understanding of HTTP protocol and API design
Proven experience designing and operating webhooks in production, including:
idempotency handling
retries and failure recovery
event deduplication
Experience implementing OAuth2 flows, including:
authorization code
client credentials
token lifecycle and refresh tokens
Strong understanding of JWT beyond basic usage (signing, validation, security implications)
Experience working with production systems under real constraints

Work with global brands and disruptive startups.
Remote work / Home office.
If a hybrid or on-site model is required, you will be informed from the first session.
Work schedule aligned with the assigned project/team.
Monday to Friday schedule.
Legal benefits (Applicable for Mexico).
Day off on your birthday.
Private health insurance (Applicable for Mexico).
Life insurance (Applicable for Mexico).
Multicultural teams.
Access to courses and certifications.
Meetups with industry experts and top universities.
Virtual networking events and interest groups.
English classes.
Opportunities within our different business lines.
Proudly certified as a Great Place to Work.

Senior Backend Integration Engineer, Node.js

Key skills