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Alden Gillespy

@aldengillespy

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I build scalable AI, cloud, and enterprise applications across Python, Java, JavaScript, and AWS.

United States

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I've modernized enterprise applications at Ancestry with Spring Boot, React, TypeScript, PostgreSQL, Redis, Kafka, and Kubernetes, improving response times by 45% and page load times by 50%.

At SERP Solutions, I rebuilt legacy AI services as scalable FastAPI applications and delivered RAG assistants that improved response accuracy by 35% while reducing manual lookup by 70%. I also optimized async Python and AWS workloads, lowering API response time from 650ms to 180ms.

I've led backend, platform, and automation work at NBCUniversal, Cognizant, Outlier, Concepta Tech, and Micro1—from Node.js microservices and ETL pipelines to AI evaluation workflows, payment services, and workflow automation.

I bring 14+ years of experience designing maintainable distributed systems, building production AI solutions, improving performance, and collaborating across teams while mentoring junior developers.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Developer

Current

SERP Solutions

Nov 2025 - Present (9 months)

Improved legacy AI services into scalable FastAPI applications, delivering production-ready ML solutions. Built RAG AI assistants, improving response accuracy by 35% and reducing manual lookup by 70%.

fastAPI TensorFlow PyTorch LangGraph RAG OpenAI API Docker Kubernetes AWS Python REST APIs

AI Evaluation Analyst

Micro1

Dec 2025 - Mar 2026 (3 months)

Designed 25+ AI-powered workflows for business and engineering teams, reducing manual work by 40%. Built AI automations with Google Workspace and cloud tools, reducing task time from hours to minutes.

AI Workflow Automation Google Workspace Prompt Engineering Process Analysis Automation

Senior Systems Engineer

Outlier

Sep 2025 - Dec 2025 (3 months)

Built high-performance backend services in Python for AI data processing and evaluation workflows. Developed scalable data pipelines supporting AI model training, validation, and benchmarking.

Python Data Pipelines AI Model Training Performance Optimization Distributed Systems Internal Tools

Senior Software Engineer

Ancestry

Nov 2022 - Oct 2025 (2 years 11 months)

Modernized legacy applications with Spring Boot and React, improving response times by 45%. Improved outdated UIs with React, TypeScript, and Next.js, reducing page load times by 50%.

Spring Boot Hibernate React TypeScript Next.js REST APIs PostgreSQL Redis Docker Kubernetes Maven Git GitHub Jenkins Azure Mockito

Lead Software Engineer

NBCUniversal

Feb 2021 - Sep 2022 (1 year 7 months)

Modernized Node.js microservices with PostgreSQL and Redis, reducing API latency from 210ms to 85ms. Deployed containerized services on AWS using Docker for improved scalability and reliability.

Node MongoDB REST APIs PostgreSQL Redis Docker AWS EC2 ECR Cloudwatch IAM GitHub CI CD Postman Linux BASH Nginx SQL JSON CSV ETL

Software Developer

Concepta Tech

Mar 2020 - Jan 2021 (10 months)

Produced a LAMP solution and reusable SDKs for a timeshare platform using Laravel, MySQL and REST APIs. Solved slow property searches with Apache Solr, reducing response time from 1.8s to 700ms.

Laravel Symfony WordPress MySQL Apache SOLR Elasticsearch REST APIs Redis Docker Git Linux

Software Developer

Cognizant

Jun 2012 - Jan 2020 (7 years 7 months)

Modernized legacy payment services using Java, Spring Boot, and Python, reducing API response time. Developed REST APIs with Java and Node.js for payments and account management.