Remote Integration Lead - Fintech & Payments Support

Lever, Inc.; España; Remote; EUR 55,000 - 85,000; Full time

Benefits offered by this job

Fully remote

Competitive salary

Career progression

Platform ownership

Job summary

Lever, Inc. is seeking an Integration Manager & Technical Support Specialist based in Spain to own merchant onboarding, payment integrations, and live incident response within a fintech environment.

You will configure payment methods, validate APIs, troubleshoot issues, and ensure production readiness for Go‑Live. In this role, you will collaborate with international merchants and engineering teams to resolve complex problems, improve platform reliability, and translate technical findings into

Qualifications

• At least 1 year in L2/L3 technical support or fintech/crypto environment.
• Hands-on with system logs and monitoring tools to trace transaction errors.
• Understanding of client-server architecture, REST APIs, and JSON for integration troubleshooting.
• Proficient with Postman to validate API requests and troubleshoot issues.
• Strong analytical and problem-solving skills for root-cause analysis under time constraints.
• Detail-oriented with precision in managing configurations, access credentials, and production environments.
• Proactive and self-directed with ownership of merchant issues.

Responsibilities

• Lead technical merchant onboarding by configuring integrations, payment routing, and payment methods across PSP, on/off-ramp, and card solutions.
• Manage API access and production readiness configurations including issuing API keys.
• Validate API requests and troubleshoot integration issues using Postman.
• Investigate transaction incidents by analyzing logs, JSON payloads, and monitoring data to identify root causes.
• Use Grafana and observability tools to trace transaction errors across systems.
• Replicate and isolate reported bugs to determine origin (merchant side vs platform).
• Triage technical issues and provide clear escalations to Engineering for fixes.
• Support final verification and production readiness for merchants before go-live.
• Communicate technical findings to international merchants and stakeholders clearly.
• Prepare concise incident reports and maintain thorough documentation.

Skills

L2/L3 support

REST APIs

Postman

Analytical thinking

Incident management

English/Russian comms

Tools

Grafana

SQL queries

Job description

Lever, Inc. is seeking an Integration Manager & Technical Support Specialist based in Spain to own merchant onboarding, payment integrations, and live incident response within a fintech environment.

You will configure payment methods, validate APIs, troubleshoot issues, and ensure production readiness for Go‑Live. In this role, you will collaborate with international merchants and engineering teams to resolve complex problems, improve platform reliability, and translate technical findings into