Senior Backend Engineer, Payments
senior · version v1-PIHOV9
51191531-c10f-4c75-a19c-488a528e1fc0
Competencies
weights sum to 1.00| Name | ID | Weight | Definition |
|---|---|---|---|
| Distributed Systems Design | distributed_systems_design | 0.30 | Design and implement reliable payment systems handling high-throughput transactions across Kafka topics, ensuring idempotency, eventual consistency, and graceful failure handling in a distributed environment. |
| Database Optimization | database_optimization | 0.25 | Architect scalable Postgres schemas for financial transactions, optimize complex queries for payment reconciliation, and implement strategies for handling large-scale transaction data without compromising consistency. |
| Payments Domain Expertise | payments_domain_expertise | 0.25 | Demonstrate deep knowledge of payment flows, settlement mechanics, PCI compliance, fraud prevention, and reconciliation—applying this context to make architectural decisions that prevent revenue loss and operational incidents. |
| Backend Architecture & Python Proficiency | backend_architecture | 0.20 | Write production-grade Python code with strong async/concurrency patterns suited to I/O-heavy payment operations; design resilient microservices with proper error handling, monitoring, and backward compatibility for payment systems. |
Scoring Weights
Adjust how much each competency contributes to the final score. Changes apply to all future evaluations for this job spec.
distributed_systems_design
30%0.30
database_optimization
25%0.25
payments_domain_expertise
25%0.25
backend_architecture
20%0.20
Total weight: 1.00 ✓ balanced
Interview questions
AI-generated from the JD · auto-published · edit anytime3 currently · candidate sees this many
Behavioral round (Round 02)
Voice Q&A · pre-generated from the JD · edit anytime4 prompts · Cal walks through each in order during Round 02
Live performance
Aggregated from candidates who took this job spec.
Interviews
1
0 completed
Avg score
—
out of 100
Completion
0%
0 of 1
Avg score per competency
Distributed Systems Designweight 0.30—n=0
Database Optimizationweight 0.25—n=0
Must-haves
- required5+ years backend engineering experience
- requiredProficiency in Python
- requiredExperience with Postgres and Kafka
- requiredDemonstrated expertise building or maintaining production payment systems