xiaoqi l.
FreelancerTop Rated PlusSenior backend engineer (Go / Python) with 6+ years building high-traffic production systems: large-scale recommendation systems, big data infrastructure, and streaming pipelines.
What I work on
• Recommendation systems: candidate generation, ranking, real-time feature serving
• Data infrastructure: batch and streaming pipelines with Kafka & Kinesis
• Experimentation: feature flags and A/B testing (maintainer of Bucketeer, open-source, Go)
• Backend services and APIs: design, scaling, refactoring, architecture reviews
• Python quant tooling: market data pipelines, broker API automation, ML-based volatility models
Stack
• Languages: Go, Python, Java
• Data & messaging: Kafka, Kinesis, MySQL, PostgreSQL, Elasticsearch
• Infra: Docker, Kubernetes, AWS, GCP
Based in UTC+8, with good overlap with Japan, Asia-Pacific, and US evenings.
China#14 / 10,760Top 0.13%
xiaoqi l. earns an estimated $7.3k/mo. That's 6.1× the typical freelancer and more than 99.77% of everyone we track.