Open to opportunities

Jason Allen

@jasonallen

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Senior full-stack engineer specializing in distributed systems, AI/ML integrations, and performance optimization.

United States

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What I'm looking for

I’m looking for a senior full-stack role where I can build distributed, high-throughput products with strong observability, secure cloud deployments, and real AI features (LLM APIs + RAG) that improve decision-making.

I’m a Senior Fullstack Engineer with 8+ years of experience delivering high-performance distributed applications across healthcare, aerospace, energy, and SaaS platforms. I focus on building reliable backend APIs and polished React/TypeScript experiences that help teams make better decisions.

In my recent work at Optum (10/2022–Present), I developed Node.js backend microservices powering healthcare analytics and patient engagement platforms, integrating clinical, claims, and patient data. I’ve also implemented LLM API integration and RAG workflows for AI-driven decision support, and optimized ETL pipelines and databases (PostgreSQL, MongoDB, Redis) for high-throughput processing.

Across teams like Ordermark, Collins Aerospace, and Con Edison, I’ve supported event-driven systems, high-throughput messaging, and data/analytics for operations-critical use cases. I bring strong observability and performance optimization using Prometheus, Grafana, and the ELK Stack, and I ensure secure cloud deployments with AWS/Azure/GCP, Docker, Kubernetes, and CI/CD—supporting HIPAA compliance when required.

Experience

Work history, roles, and key accomplishments

Current

Senior Fullstack Engineer

Current

Optum

Oct 2022 - Present (3 years 10 months)

Developed Node.js backend microservices for healthcare analytics and patient engagement, building React + TypeScript dashboards for enterprise users. Implemented LLM API integration with RAG workflows and optimized ETL pipelines and databases while improving observability and reliability.

Node Microservices React TypeScript Backend LLM Integrations RAG ETL PostgreSQL MongoDB Redis Prometheus Grafana ELK Stack Observability AWS Azure GCP Docker Kubernetes CI CD HIPAA compliance Security

Software Engineer

Ordermark

Jan 2021 - Sep 2022 (1 year 8 months)

Developed Node.js backend services for multi-platform restaurant order management and built React dashboards for consolidated online orders and analytics. Integrated with POS systems and implemented high-performance APIs for real-time order aggregation, monitoring performance with Prometheus and Grafana.

Node Backend Services React Dashboarding API Development Real Time Order Aggregation Menu Sync Prometheus Grafana Performance Monitoring

Software Engineer

Collins Aerospace

Jul 2019 - Dec 2020 (1 year 5 months)

Built fullstack applications (Node.js backend and React frontend) for aerospace operational systems and supported distributed event-driven messaging pipelines. Integrated data processing and analytics for aircraft telemetry and improved observability and performance using Prometheus, Grafana, and the ELK stack.

Node React Fullstack Development Data Processing Analytics Telemetry Prometheus Grafana ELK Stack Observability Performance Optimization CI CD

Software Engineer (Consultant)

Con Edison

Jul 2016 - Apr 2019 (2 years 9 months)

Developed backend APIs and fullstack solutions for electricity, natural gas, and steam management platforms. Built React + TypeScript dashboards for grid monitoring and implemented data pipelines and distributed services for smart grid and energy management with security, monitoring, and logging.