Full-Stack Developer & Security Engineer Okeson Systems (Independent)
I deliver production full-stack applications end to end using React, Next.js, Node.js, Ruby on Rails, and Python services. I build responsive, high-performance SaaS and enterprise planning applications backed by PostgreSQL, Redis, and TimescaleDB, deployed on AWS serverless infrastructure.
I architect event-driven systems using WebSockets, Kafka, and microservices, including latency-sensitive real-time and trading pipelines. I implement secure identity and access controls with OAuth2, JWT, RBAC, and MFA, while applying OWASP guidance, threat modeling, and secure API design.
I manage infrastructure with AWS Lambda, API Gateway, S3, IAM, Docker, Kubernetes, Terraform, CI/CD pipelines, and automated testing. I monitor and maintain REST APIs and event-driven services for real-time visualization and BI workloads.
I own technical architecture, documentation, testing, debugging, deployment, and maintenance for fintech, trading, and security systems. This includes deploying products into customer environments and using Agile practices to manage delivery, security, and risk.