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  • Hardware PCB Design

    $150/hr Starting at $1,000

    Every project we do is custom. Guiding you through the process is a dedicated team (not just one person) that ensures someone is always available to answer questions and assist with your needs. To bring...

    DesignPCB Design
  • Embedded Firmware

    $150/hr Starting at $10,000

    The depth of experience found in our firmware development team is unique in our industry. Our experience ranges from PC computers to embedded PCs. This includes: Processor: NXP (Freescale) Kinetis

  • Software Design and Programming

    $160/hr Starting at $10,000

    The depth of experience found in our software development team is unique in our industry. Our experience ranges from super computers to embedded PCs. This includes: Control Algorithms: State machine,...

    .NET.NET Compact Framework AccessAlgorithmsAnalysis


OEM, Embedded and Custom Electronics Hardware, Firmware and Software

Smarter by design, built to last, SJE-Rhombus embedded controls are in use today in thousands of products around the world. Applications range from highly sophisticated scientific instruments to decision management networks for incredibly harsh environments.

At SJE-Rhombus, we build partnerships, not just parts. For over 35 yeas, we have been designing, testing and building custom electronic controls for a variety of OEMs (original equipment manufacturers). Our goal is to provide you with quality products, delivered on time, and at a reasonable price. And our outstanding customer service has been the cornerstone of our success.

Our capabilities represent the most reliable integration of engineering and manufacturing in the industry. Utilizing the latest in electronic assembly techniques and equipment, including J-Standard certification, you can rely on SJE-Rhombus from design concept through the manufacturing process. Our controls are found in a wide variety of electronic monitoring and control applications. In most cases, the controls we produce are microprocessor based printed circuit board assemblies. Some are fully packaged sub-assemblies.

We welcome the opportunity to discuss our capabilities with you. We can show you how a custom control can benefit your product through:

• Reduced costs
• Enhanced functionality
• Built in diagnostic capabilities
• Differentiation from competitive products

Founded: 1975

Work Terms

Hours of Operation: 8am -5pm Central Time
Payments: 20% up front. Remaining based on deliverables.