> Markdown version of [/jobs/ext/552872-senior-software-engineer-backend](https://www.wearedevelopers.com/jobs/ext/552872-senior-software-engineer-backend). 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). --- # Senior Software engineer, Backend - **Company:** HEN, LLC - **Location:** Livermore, CA, United States - **Experience:** Expert - **Salary:** $180,000.0 - $220,000.0 - **Contract:** Permanent contract - **Skills:** Computer-Aided Design, Audit Trail, User Authentication, CAD Data Exchange, Cloud Engineering, Databases, Identity and Access Management, Python (Programming Language), Message Queuing Telemetry Transport (MQTT), Node.Js, OAuth, OpenID, PostGIS, Security Assertion Markup Language (SAML), Software Engineering, Systems Integration, TypeScript, Web Applications, WebSocket, Esri GIS (Software), Data Processing, Cloud Platform System, Backend, Microsoft InTune, Event Driven Architecture, Information Technology, Google Cloud Functions, Apache Kafka, Casper Suite, Api Design - **Published:** June 14, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=495e3f8bd33c7cb2 ## About the Role Do you have experience in gRPC?, Do you have a Bachelor's degree?, * A Bachelor's or higher degree in Computer Science, Software Engineering, or a related field. * 8+ years building production integrations between backend services andthird-party systems - ideally messy, legacy, or vendor-controlled ones. * Public-safety, healthcare, fintech, telecom, or industrial backgrounds all translatewell. * Background in or around the fire service, EMS, or emergency management. You can sit in a room (physical or virtual) with a fire department's IT lead and a CAD vendor's engineer and move a conversation forward. * Past work with CAD, RMS, or other public-safety systems (Tyler, Hexagon, Central Square, Mark43, RapidSOS, FirstNet). GIS work - Mapbox, ESRI, PostGIS, GeoJSON pipelines. * Prior experience working under CJIS, FedRAMP, or similar regulated frameworks. * Strong backend engineering experience in Python and TypeScript/Node.js, with working familiarity across both ecosystems. * Production experience with event-driven systems: MQTT, WebSockets, Kafka, or equivalents. * Comfortable with REST and gRPC API design, schema evolution, and writing adapters between systems. * Cloud-native experience - GCP, Pub/Sub, Cloud Run, IAM, secret management. * Familiarity with CJIS-aligned cloud environments. Nice-to-have qualifications * MDM experience (Jamf, Intune, Kandji) at a non-trivial scale. * Authentication stack: OAuth/OIDC, SAML, mTLS, SCIM, and the operational reality of SSO rollouts at enterprise customers. Clearance and eligibility Because our product integrates with Computer-Aided Dispatch (CAD) and other systems that may handle Criminal Justice Information (CJI), this role requires. Eligibility to pass a fingerprint-based national background check under the FBI CJIS Security Policy. Completion of CJIS Security Awareness Training and approval by the relevant CJIS Systems Agency (CSA) prior to accessing production CJI environments. Status as a U.S. person (U.S. citizen or lawful permanent resident). Willingness to comply with agency-specific personnel security requirements, which can include drug screening, additional background checks, and ongoingrecertification. ## Description HEN builds the connected systems fire departments use to run incidents from intelligent hardware at the hydrant, FDC, and pump panel through to the command tablet on scene and the chief's strategic dashboard. STAR-IQ is our incident command platform:an iOS/web app that gives Incident Commanders and Battalion Chiefs live unit assignments, comms channels, org structure, building preplans, and progress tracking during active incidents. It runs alongside CAD, building/preplan databases, mappingservices, and our broader ecosystem (CRUX, TITAN, FLUID-IQ, the ARES agentic co-pilot). You will help define HEN's long-term interoperability architecture across CAD, GIS, identity, telemetry, and incident-command systems., You'll own the surface area where STAR-IQ and related subsystems meet everything else. That includes: * CAD integration. Work with Fire Departments (FD) and Computer-Aided Dispatch (CAD) vendors to design and maintain the integration service that ingests incident data from CAD systems, transforms the CAD data to a unified schema, and exposes it to the STAR-IQ backend system. * Building and preplan data. Build integrations and ingest FD preplan and building data to the STAR-IQ backend, normalizing wildly different source schemas into a reliable application format. * Mapping and GIS. Integrating Mapbox, ESRI, and department-custom GIS layers behind the Map and Dashboard surfaces - hydrants, FD assets, weather, exposures, district boundaries. * Identity and device management. Wiring up SSO, AuthN/AuthZ (GCP), and MDM flows so a department can provision users and iPads at scale without HEN being in the loop for every change. * Audit and incident data. Making sure every integration writes through the append-only audit log and respects the data model that separates production, training, and simulated data. * Field reliability and partner enablement. Writing the integration docs, sample payloads, and conformance tests that a CAD vendor or FD IT team can actually use. Running joint technical integration sessions with departments during rollout. * Compliance-aware design. Building integrations that respect CJIS Security * Policy, agency-specific data handling rules, and the separation between production CJI and our training/simulated environments. ## Related Videos - [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) - [Tracking vehicles at scale](https://www.wearedevelopers.com/videos/1999-tracking-vehicles-at-scale) - [Designing UX for SRE Agents in High-Stakes Incidents](https://www.wearedevelopers.com/videos/100003-designing-ux-for-sre-agents-in-high-stakes-incidents) - [Get started with securing your cloud-native Java microservices applications](https://www.wearedevelopers.com/videos/123-get-started-with-securing-your-cloud-native-java-microservices-applications) - [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) - [Delegating the chores of authenticating users to Keycloak](https://www.wearedevelopers.com/videos/1558-delegating-the-chores-of-authenticating-users-to-keycloak) ## 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) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)