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SJE Inc. Tech Stack

Water and wastewater control systems, PCBs, and embedded solutions

Appliances, Electrical, and Electronics Manufacturing Detroit Lakes, Minnesota 501–1,000 employees Founded 1975 Privately Held

sjeinc.com LinkedIn

SJE Inc. designs and manufactures liquid level control systems, septic alarms, float switches, and custom PCBs for municipal and industrial water applications. The tech stack reveals a mature embedded-systems operation—NXP and Atmel microcontrollers, RTOS kernels, Modbus TCP, PROFINET, and Ethernet/IP protocols—paired with industrial control platforms (Rockwell Automation Studio 5000, Siemens, Schneider Electric). Active hiring skews 45% engineering, suggesting capacity-building around control system design and network deployments, while pain points center on cost reduction, margin pressure, and distributor channel expansion.

Tech Stack 51 technologies

Core StackZoom Siemens CAD SCADA Grinder Embedded C RTOS I2C UART Ethernet Wi-Fi Bluetooth Variable Frequency Drives PLC HMI Excel Teams C/C++ NXP Atmel AutoCAD Electrical Rockwell Automation Studio 5000 FactoryTalk View Schneider Electric VTScada Ignition Ethernet/IP PROFINET Modbus TCP+20 more

What SJE Inc. Is Building

◆Challenges

Reducing product costs
Identifying adjacent market opportunities
Acquiring new business
Maintaining margin performance
Grow domestic distributor market share
Meeting sales targets
Meeting sales goals
Increasing domestic market share
Reducing equipment downtime
Improving product quality

▲Active Projects

Identify and develop new market and product opportunities in agriculture
Design large engineered panels for water and wastewater applications
Grow domestic distributor market share for clt water well products
Ongoing production improvement methods
Pump control panels
Network design and deployment
Programming aoi
Maintenance of manufacturing equipment
Marketing strategies for clt water well products
Spark program

Hiring Activity

Accelerating65 roles · 35 in 30d

Department

Engineering

29

Sales

15

Manufacturing

9

Support

4

Logistics

2

Finance

1

HR

1

Operations

1

Seniority

Mid

30

Manager

13

Junior

12

Senior

8

Director

1

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About SJE Inc.

SJE Inc., founded in 1975 and headquartered in Detroit Lakes, Minnesota, operates across water and wastewater treatment, industrial liquid control, and residential septic markets. The company maintains a portfolio of brands, each focused on high-quality control products and solutions. Beyond hardware (float switches, alarms, pump control panels), SJE Rhombus offers custom PCB and embedded-software services—circuit board design, firmware development, and HMI integration. Operations span multiple U.S. locations and China-based production, with customer reach across six continents. Current priorities include engineering panel design for water systems, agricultural market entry, production cost reduction, and domestic distributor channel development.

HeadquartersDetroit Lakes, Minnesota

Company Size501–1,000 employees

Founded1975

Hiring MarketsUnited States

Frequently Asked Questions

What technology does SJE Inc. use for water control systems?

SJE deploys NXP and Atmel microcontrollers, RTOS kernels, and embedded C/C++, integrated with Modbus TCP, PROFINET, and Ethernet/IP protocols. Control interfaces run on Rockwell Automation Studio 5000, Siemens, or Schneider Electric platforms.

Where is SJE Inc. headquartered?

SJE Inc. is headquartered in Detroit Lakes, Minnesota. The company was founded there in 1975 and maintains operations across multiple U.S. locations and China.