Sergey A.
Senior Java Software Engineer | AWS
Senior Software Engineer with 10+ years of experience designing and building high-load, distributed backend systems in Java. Strong background in microservices architecture, event-driven systems, and fintech platforms, with hands-on experience across AWS, Kafka, Kubernetes, and relational / NoSQL databases. Proven record of owning backend services end-to-end, contributing to architectural decisions, and improving system scalability and reliability. Experienced working as both a senior individual contributor and lead engineer, collaborating closely with product, infrastructure, and business teams on production-critical systems.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $25k
Billed in all: $34,970$35k
$25k in the last 6 months
Earnings, last 30 days
Skill rankings: Top 2% in MySQL
Ranked by MRR among everyone on Upwork with the skill.
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