Hayden Nier
Primer.ai
Colorado Springs,CO
11
years of professional experience
Results-driven Senior Software Engineer with 10+ years in mission intelligence platforms and command-and-control systems. Currently developing AI-enabled defense analysis systems, employing TypeScript, Node.js, Apollo GraphQL, React, and AWS services. Expertise in designing event-driven services and secure workflows that enhance productivity and reliability in complex environments.
Work History
Senior Software Engineer
5 Years 4 Months- Architected event-driven backend services on AWS EKS, Lambda, S3, MSK, and Aurora to surface emerging narrative signals while preserving source-level context, reducing noisy alert volume by 28%.
- Built Node.js data services with AWS MSK, Aurora PostgreSQL, Redis, and Kubernetes to strengthen retry handling, idempotency, and operational reliability for high-volume analytic workflows.
- Led the Enterprise Mission Analysis project with the Enterprise Workflows team, using TypeScript, Node.js, Apollo GraphQL, React, and Aurora PostgreSQL to redesign persistent analytic workspaces for defense investigators, reducing analyst read-in and evidence assembly time by 35%.
- Built GraphQL APIs, SQL citation models, and source-span validation workflows that decomposed AI-generated answers into verifiable claims, cutting manual validation effort by 40% across high-trust investigation workflows.
- Designed federated GraphQL subgraphs and schema governance patterns for investigation metadata, timelines, maps, citations, and network graphs, reducing breaking API changes by 41% across platform consumers.
- Implemented observability workflows with Datadog, CloudWatch, Grafana, structured logs, and production dashboards, enhancing incident triage efficiency across analytic services.
- Defined CI/CD pipelines with Docker, Kubernetes, Terraform, GitHub Actions, and Linux automation, standardizing deployment workflows across GraphQL services, React applications, and backend data processors.
- Collaborated with product, design, and mission stakeholders to translate investigation workflows into requirements, epics, stories, API contracts, and technical delivery plans for distributed Agile teams.
- Mentored engineers on Apollo GraphQL, federated schema design, testing strategies, observability, and code quality practices, improving onboarding and architectural consistency across remote engineering teams.
Software Engineer
3 Years 10 Months- Designed event-driven backend services with AWS Lambda, S3, streaming patterns, Aurora, Docker, and CI/CD workflows to improve mission event handoff and processing resilience.
- Implemented GraphQL APIs, schema evolution patterns, and SQL persistence layers that allowed web and operational interfaces to ship faster without breaking downstream consumers.
- Built mission workflow services for the Distributed Command and Control project with the Command & Control Products Team, using TypeScript, Node.js, React, GraphQL, and SQL to improve operator task routing and cross-domain data handoff.
- Implemented GraphQL APIs, schema evolution patterns, and SQL persistence layers to enable faster delivery of web and operational interfaces while maintaining compatibility for downstream consumers.
- Built React and Angular interfaces for operators to enhance responsive layouts, optimize offline/cache behavior, and meet performance budgets for field-accessible workflows.
- Expanded automated test coverage with Jest, Cypress, and integration tests, collaborating with SDET to enhance release quality across mission workflow services.
- Delivered secure identity validation workflows that strengthened audit traceability across field and enterprise operations without exposing sensitive operational details.
- Collaborated with product owners, QA, security stakeholders, and engineering leads to groom backlogs, clarify requirements, decompose epics, and deliver release-ready work through Agile sprint cycles.
Software Engineer
1 Year 3 Months- Enhanced account-opening and funding processes for Brokerage Account Onboarding project on Retail Brokerage Platform Team using JavaScript, Node.js, REST APIs, and SQL, resulting in improved application handoff quality.
- Streamlined account transfer and external bank-linking workflows through transactional SQL validation, audit records, and service-layer checks for customer and associate-facing operations.
- Designed SQL data models, migrations, stored procedures, and query optimization routines for brokerage onboarding workflows and funding review processes.
- Improved account transfer and external bank-linking workflows with transactional SQL validation, audit records, and service-layer checks for customer and associate-facing operations.
- Implemented unit tests, integration checks, release validation steps, and peer review practices to reduce regression risk across onboarding and transfer workflow releases.
- Facilitated post-implementation production triage with SQL diagnostics, application logs, defect analysis, and release notes, improving issue handoff between engineering, QA, and operations teams.
Education
B.S. - Computer Science
Skills
API contracts
CI/CD pipelines
Schema design
Programming Languages: TypeScript
JavaScript
SQL
Python
Event-driven architecture
Integration testing
Production dashboards
Machine Learning Integration
Timeline
Senior Software Engineer
Primer.ai
04.2021 - CurrentRead More
Software Engineer
Parsons Corporation
06.2017 - 04.2021Read More
Software Engineer
Fidelity Investments
05.2015 - 08.2016Read More
Rochester Institute of Technology
B.S. from Computer Science
Read More