01
Backend & APIs
Python, Node.js, TypeScript, Express.js, Fastify, NestJS, Django, FastAPI, Flask, REST, GraphQL, microservices.
Senior Software Engineer · 11 Years
I build reliable software for complex, real-world systems.
Focused on Python
Backend platforms, distributed systems, APIs, cloud-native applications, modern React interfaces, and AI-assisted engineering workflows — designed with production reliability in mind.
const engineer = {
name: "Bernard Hartman",
backend: ["Python", "Node.js"],
frontend: ["React", "TypeScript"],
systems: ["Kafka", "PostgreSQL", "Redis"],
cloud: ["GCP", "Azure", "AWS"],
mindset: "production-ready"
};About
Engineering breadth with senior-level depth.
I’m a Senior Software Engineer with 11 years of experience designing scalable web applications, backend services, API platforms, distributed systems, and cloud-native software across entertainment, healthcare, global eCommerce, and retail technology.
My work spans Python and Node.js services, TypeScript and React applications, REST and GraphQL APIs, Kafka-based event flows, relational data systems, containerized infrastructure, CI/CD, observability, security, testing, and production debugging.
I also work with AI-assisted engineering workflows — reviewing model output, designing structured evaluation criteria, validating technical reasoning, and developing high-quality engineering responses grounded in practical system constraints.
LocationScranton, PA
Experience11 years
Primary stackPython + Node.js
FrontendReact + TypeScript
CloudGCP · Azure · AWS
EducationB.S. Computer Science
Skills
Tools I use to ship production systems.
Grouped by how they show up in real engineering work — not arbitrary proficiency percentages.
02
Frontend
React, Redux, React Hooks, Next.js, Vite, Webpack, Tailwind CSS, Material UI, responsive UI development.
03
Data & Messaging
PostgreSQL, MySQL, MongoDB, Redis, Prisma, TypeORM, Sequelize, Kafka, WebSockets, webhooks, async processing.
04
Cloud & DevOps
GCP, Azure, AWS, Docker, Kubernetes, GitHub Actions, Cloud Build, Jenkins, Nginx, Linux, CI/CD.
05
Quality & Reliability
Jest, Pytest, React Testing Library, Cypress, Playwright, API testing, observability, alerting, performance tuning.
06
AI Engineering Evaluation
LLM output evaluation, prompt analysis, rubric design, code review, reasoning review, synthetic tasks, response ranking.
PythonNode.jsTypeScriptReactPostgreSQLKafkaDockerKubernetesGraphQLRedis
Experience
From retail systems to regulated healthcare and entertainment finance.
Oct 2024 — Present
Senior Software Engineer
Cast & Crew · New York, NY
- Build full-stack production workflow applications for payroll, workforce management, document processing, and entertainment finance using Node.js, TypeScript, Python, React, PostgreSQL, Redis, Docker, Kubernetes, GCP, and Azure.
- Develop AI-assisted engineering and operations workflows with structured validation and review patterns for payroll records, crew documents, approvals, accounting exceptions, and workflow data.
- Design and review senior-level software engineering evaluation scenarios, rubrics, technical responses, and model outputs across debugging, APIs, SQL, distributed systems, cloud deployment, and system design.
- Implement Kafka-based event-driven workflows and scalable Node.js services for payroll transitions, document processing, accounting updates, reconciliation, and exception queues.
- Strengthen reliability through structured logging, health checks, monitoring, alerting, retry-safe processing, and production debugging practices.
Jul 2020 — Sep 2024
Senior Full Stack Engineer
Parachute Health · Princeton, NJ
- Built healthcare applications supporting clinical ordering, documentation, supplier coordination, payer requirements, and patient workflow operations.
- Designed Node.js microservices and distributed backend systems using TypeScript, Kafka, REST, GraphQL, PostgreSQL, and Redis.
- Integrated Python-based AI and automation capabilities into clinical documentation and validation workflows while preserving HIPAA-aware auditability and traceability.
- Implemented secure authorization, encrypted data handling, audit logging, traceable state transitions, and protected-health-information safeguards.
- Collaborated across frontend, DevOps, data engineering, product, compliance, and QA to deliver secure cloud-native features.
May 2017 — Jun 2020
Software Engineer
Global-e · New York, NY
- Developed cross-border eCommerce features for checkout, pricing, taxes, duties, shipping, payments, and international operations.
- Built React dashboards and Node.js backend services for merchant integrations, order processing, payment workflows, localization, and settlement operations.
- Implemented Kafka consumers, webhooks, retries, background jobs, and Python reconciliation scripts for global transaction and shipping workflows.
- Improved API latency, caching, PostgreSQL queries, Kafka processing, React rendering, and production observability.
Aug 2014 — Apr 2017
Full Stack Developer
NIKE, Inc. · Beaverton, OR
- Developed retail web applications for digital commerce, product discovery, inventory visibility, campaigns, and merchandising systems.
- Built React interfaces and Node.js/Express services for catalog, inventory, pricing, campaign content, and commerce integrations.
- Implemented Python automation, SQL-backed data workflows, tests, CI pipelines, Docker-based deployment support, and production troubleshooting practices.
Selected Engineering Work
Representative systems and problem spaces.
These case studies are drawn from professional experience rather than invented side projects.
01Entertainment Finance
Payroll & Production Workflow Platform
Full-stack services and workflows supporting payroll events, crew documents, approvals, accounting exceptions, reconciliation jobs, and production finance operations.
Node.jsPythonReactKafkaPostgreSQL
02Healthcare
Clinical Ordering & Documentation Systems
Secure distributed workflows connecting clinicians, suppliers, payers, documentation, validation, order status, and operational review in a regulated environment.
TypeScriptGraphQLKafkaRedisKubernetes
03Global eCommerce
Cross-Border Commerce Infrastructure
Checkout, payments, localization, tax, shipping, merchant integration, reconciliation, and event-processing systems spanning international commerce workflows.
Node.jsReactPostgreSQLRedisPython
04AI Evaluation
Engineering Quality & Model Evaluation
Structured evaluation of AI-generated code, debugging plans, API recommendations, SQL logic, distributed-system reasoning, and cloud deployment guidance.
RubricsCode ReviewSystem DesignLLM Evaluation
Education
Computer science foundation.
2010 — 2014
Stevens Institute of Technology
Hoboken, New Jersey
Bachelor of Science
Computer Science
Computer Science
Contact
Have a senior engineering problem to solve?
Reach me directly by email or connect on LinkedIn.