> Markdown version of [/jobs/ext/2954319-staff-principal-software-engineer](https://www.wearedevelopers.com/jobs/ext/2954319-staff-principal-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff/Principal Software Engineer - **Company:** STAFFING SERVICES, INC. - **Location:** St. Louis, MO, United States - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Botnet, Data Normalization, Programming Tools, Distributed Systems, Python (Programming Language), Machine Learning, OAuth, Public Key Infrastructure, Systems Architecture, TypeScript, Data Logging, GitHub Copilot, Delivery Pipeline, Large Language Models, Spring-boot, Backend, Event Driven Architecture, Free and Open-Source Software, Multiaccess Edge Computing, Dynatrace, Databricks, Microservices - **Published:** September 17, 2026 - **Apply:** https://www.careerjet.com/jobad/us4c72869400d5f2d1ea1843b970e4d91b ## About the Role * 10+ years of experience building production distributed systems * Strong Java + Spring Boot * Strong AWS experience * Experience with microservices, APIs, event-driven architecture * Experience building ML/AI inference pipelines * Data normalization, feature pipelines, model-serving integration * Hands-on Edge Computing / CDN * Edge Workers * CDN Functions * Lambda@Edge or similar * Strong system architecture/design experience * Experience building 0-to-1 / greenfield systems * Comfortable working in fast-paced, ambiguous environments * Strong experience using AI-assisted development tools * GitHub Copilot * LLM-based coding tools * Agentic coding assistants * Strong JavaScript/TypeScript or ability to work with JS/TS edge runtimes Nice-to-Have * Identity/Security experience: JWT, JWS, PKI, OAuth 2.0, bot detection * Python * Databricks * ML Model Registry * Observability: distributed tracing, logging, dashboards * Third-party/vendor integrations * Open-source contributions Tech Stack * Backend: Java, Spring Boot * Cloud: AWS * Edge: Edge Workers, CDN Compute, Lambda@Edge * AI/Data: Python, Databricks, ML Model Registry * Languages: Java, JavaScript/TypeScript, Python * Dev Tools: GitHub Copilot, AI/LLM coding tools ## Related Videos - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Remote Driving on Plant Grounds with State-of-the-Art Cloud Technologies](https://www.wearedevelopers.com/videos/251-remote-driving-on-plant-grounds-with-state-of-the-art-cloud-technologies) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Dev Digest 137 - AI'm not sure about this](https://www.wearedevelopers.com/magazine/485-dev-digest-137-ai-m-not-sure-about-this) - [Dev Digest 129 - Now that's what I call private data!](https://www.wearedevelopers.com/magazine/468-dev-digest-129-now-that-s-what-i-call-private-data)