Sergio Echeverri

I’m a Senior Software Engineer with 9+ years of experience building backend services, APIs, and data-intensive web applications across fintech and insurance. I take ownership of distributed systems from design through production, focused on service architecture, data modeling, cloud deployment, observability, and secure delivery.

At Allio Capital, I owned delivery for fintech investment experiences like portfolio dashboards, performance charts, transaction history, and account management. I built a shared component library and Storybook design system to improve UI consistency, accessibility, and reuse, and I implemented Next.js server-side rendering and incremental static regeneration to improve search visibility and first-load performance.

I also built REST APIs and supporting services in Python, Go, and NestJS to aggregate trading, pricing, compliance, and user-profile data. I designed relational data structures and SQL access patterns, and used WebSockets with Redis Pub/Sub to keep portfolio updates below 2 seconds end to end, while integrating LLM-based investment Q&A and semantic search that automated 20–25% of eligible support interactions without human escalation.

I deploy and operate on AWS and Kubernetes with Datadog monitoring, and I’ve improved performance and reliability by reducing p95 API response time by ~22% and lowering API error rates by ~18%. I’m a hands-on engineer who uses AI-assisted development to accelerate implementation—while maintaining code review, testing, and production verification—backed by secure OAuth2/JWT flows with Auth0 and enterprise-grade SSO integrations like SAML and LDAP.