Full Stack Engineer – Rust

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🕒 July 28

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Kings III Emergency Communications

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 1989

🔐 Security

📡 Telecommunications

🤝 B2B

Security • Telecommunications • B2B

Kings III Emergency Communications is a specialist provider of purpose-built emergency communication hardware and managed monitoring services for buildings and public spaces. They design, install, maintain, and 24/7 monitor emergency phones and video messaging solutions for elevators, pools, parking, stairwells, fitness areas, blue light systems, and areas of refuge — with a focus on code compliance (ASME/IBC/ADA), landline-free cellular connectivity, and automated testing. Kings III operates a dedicated in-house Emergency Dispatch Center that answers calls in seconds, offers turnkey and component-based video/voice monitoring, and serves property managers, elevator companies, telecom companies, government & education, hospitality, and senior care. The company highlights over 35 years in business, 150K+ phones monitored, and a 98% customer retention rate.

📋 Description

• Own features end to end across the stack - front-end (React/TypeScript), cloud API (Go/LiftCloud), and Rust services - rather than working a single layer. However, this role will center around Rust. • Do deep Rust work on the VTS (Vendor Translation Services) layer and the LiftNet client/server re-architecture, where your specialization matters most. • Read and extend the Go cloud API and build the UI that consumes it correctly, keeping API contracts and data shapes coherent across the stack. • Build data-dense, real-time interfaces - dashboards, map views, status panels - that stay performant and legible for building operators and field technicians on desktop and tablet. • Design and build client/server distributed-system components aligned to the LiftNet re-architecture. • Work across the full architecture: the edge layer (Raspberry Pi, binary/serial protocols), the VTS translation layer, the Go cloud, and AWS (EC2, PostgreSQL/RDS, QuestDB). • Operate, debug, and harden the Linux-based services that run on the edge devices and in the cloud. • Integrate and translate industrial/OT controller protocols (OPC UA, Modbus, serial). • Build regression validation against golden/blessed datasets and packet-level (Wireshark) verification, supporting the LN2 Integrator effort. • Contribute to AWS environment setup (Dev/Staging/QA) and security-group hardening, complementing the SOC 2 readiness effort. • Partner with the principal engineer and the second full-stack engineer to split ownership across the stack and reduce day-to-day escalation drag. • Own day-to-day work across front-end, cloud, and Rust services reliably, without principal-engineer rescue. • Deliver predictable, on-time turnaround on committed customer features. • Take independent ownership of at least one vertical domain (UI through Rust service) within the first months. • Reduce key-person risk across the VTS, the Rust backend, and the front-end.

🎯 Requirements

• Bachelor's degree or equivalent experience; Masters Degree and other engineering credentials a plus. • 5-7 years of Rust engineering experience with senior-level competency. • Genuine full-stack capability: production experience building front-ends in React/TypeScript and working server-side APIs (we run Go in the cloud - you must be able to read and extend it). • Client/server distributed-system design experience aligned to the LiftNet 3 direction. • Demonstrated self-starting autonomy - able to own a domain end to end with minimal direction (non-negotiable for this role). • Comfort across the full architecture: the edge layer (Raspberry Pi, binary/serial), the VTS layer, the Go cloud, and AWS (EC2, PostgreSQL/RDS, QuestDB). • Deep, hands-on Linux expertise - operating, debugging, and hardening Linux systems from the command line (systems, process/network/file-system troubleshooting, bash scripting, log analysis); both the edge devices (Raspberry Pi) and the cloud services (EC2) run on Linux. • Able to build, package, and deploy services on Linux - cross-compilation for ARM/edge targets, containers, and standard build toolchains. • Front-end depth on data-heavy, real-time UIs - mapping (Mapbox GL/Leaflet-class), live status, and performance tuning of dense views (a plus). • Test-automation mindset - regression validation against golden datasets and packet-level (Wireshark) verification (a plus). • Industrial/OT protocol familiarity - OPC UA, Modbus, serial integration (a plus). • AWS infrastructure fluency - environment duplication (Dev/Staging/QA) and security-group hardening (a plus). • Pragmatic for a small, fast-moving company; automation-first, low ego; communicates bottom-line-first.

🏖️ Benefits

• Medical insurance with 1 HSA and 2 PPO plan options • Flex Spending Account (FSA)/Dependent Care FSA • Dental, vision, life, short- and long-term disability insurance • Critical illness and hospital indemnity plans • 401k with company contribution • Employee Assistance Program (EAP) • Company paid telemedicine 24/7 access • Wellness Program • Employee discount program • 8 paid holidays, plus 1 floating holiday • 15 days of PTO accrued in year 1 • Generous referral bonus program • Work life balance (a must!) • Team building, attendance at our annual kickoff each January, and other fun events • Relaxed professional dress code