Ceryce Armstrong

Experience

1. AI Engineer · InRhythm, O’Fallon, IL

   Jan 2026 – Present

   Java 21 · Spring Boot · Spring Batch · Amazon EKS · GitHub Copilot

   • Designed and deployed a spec-driven-development AI pipeline that modernizes legacy Oracle PL/SQL batch jobs running on the database host into individually containerized Spring Batch jobs on EKS — accelerating delivery by ~4× (from one quarter per batch to one month per batch).
   • Generalized the pipeline to modernize a Struts/JSP legacy monolith into a modern Angular front end backed by domain-specific Spring Boot microservices, improving development time by ~2×.
   • Built a Reflexion-based memory system so the pipeline learns from its mistakes and adapts to each client’s patterns and architecture.

2. Senior Software Engineer · Bank of America, Chicago, IL

   Apr 2024 – Apr 2025

   Java 17 · Spring Boot · DB2 · OpenShift · Kubernetes · Kafka · TDD

   • Senior developer on a SAFe agile team of six (three onshore, three offshore).
   • Added REST endpoints to a microservice for managing ACH transfer limits, eliminating full application rebuilds to change them.
   • Hardened ACH fraud detection with circuit breakers and a Kafka store-and-forward pattern to preserve transactions during downtime.

3. Senior Software Engineer · PNC Bank, Chicago, IL

   Mar 2023 – Apr 2024

   Java 11 → 21 · Spring Boot · Spring Data · MySQL · Docker · TDD

   • Led a team of three modernizing a Java 11 Spring Boot microservice to Java 21 (Kafka + MySQL), bridging a new REST payment gateway with legacy batch applications.
   • Applied TDD and modern design patterns for a performant, extensible, fault-tolerant product.
   • Ensured DevOps compliance with CI/CD on internal RHEL OpenShift plus full monitoring and logging coverage.

4. Senior Software Engineer · Loop Commerce, Columbia, MO

   Oct 2022 – Dec 2022
   • Loop Commerce was shut down by its parent company, Synchrony Bank, one month after I was hired.

5. Senior Software Engineer · SuprTek, O’Fallon, IL

   May 2018 – Aug 2022

   Java 17 · Spring · JavaScript · Node.js · React · MongoDB · TDD

   • Led a team of eight converting a legacy, spreadsheet-driven logistics line of business as part of a full-scale USTRANSCOM application rebuild.
   • Designed the data, service, REST API, and messaging layers for the Coronet line of business (MongoDB, Java 17, Spring Boot, Kafka).
   • Served as interim Product Owner for six months, leading client interactions and advocating for the client in team decisions.

6. Senior Software Engineer · DMI, Carmel, IN

   Nov 2017 – Mar 2018

   Docker Enterprise · Red Hat Linux · Jenkins · Artifactory · TFS · Maven

   • Managed the transition of Allison Transmission’s DevOps infrastructure from external DMI hosting to internal hosting.
   • Migrated Jenkins, Team Foundation Server, Artifactory, and Git servers using Docker.
   • Built a Docker image and Maven repositories, migrating existing artifacts into the new Artifactory server.

7. Healthcare Informaticist · BJC Healthcare, St. Louis, MO

   Nov 2014 – Jul 2017

   Java 6/7/8 · Spring · Struts · JavaScript · jQuery · Sybase · DB2 · SQL Server · PostgreSQL · Python

   • Led design and implementation of BJC’s CDC grant-funded software for antibiotic use and resistance reporting.
   • Led conversion of major projects’ build infrastructure to Maven, mentoring six team members on its use.
   • Maintained and updated hospital-acquired-disease reporting infrastructure (Java, Spring, Struts, JavaScript, jQuery).
   • Interpreted CDC technical guides to implement new XML reports for CDC submission.

Skills

Certifications

• Verify on Credly ↗

• Margo — agentic chief-of-staffA persistent AI orchestrator that loads subagents just-in-time and runs local-first proactive loops to screen calls, texts, and email.
• Spec-driven AI development pipelineA self-verifying, spec-first engineering pipeline with a durable task-graph runtime, typed contracts, and a dedicated verification gate.
• AI-native CRM & call screenerA solo-built multi-tenant platform with an AI intake pipeline, plus a real-time telephony screener wired to an LLM persona.

Education