SI2 Technologies, Inc.

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For more than 15 years, SI2 Technologies (pronounced S-eye-two), located in North Billerica, MA, has provided customized solutions to RF, Microwave, Millimeter Wave and Survivability Challenges faced by the Department of Defense and its prime contractors.

The SI2 team’s unabashed passion is “Helping the Warfighter Win”. The company is well-known for providing agile solutions fast and solving challenges that others can’t.

Inside the secure building’s lobby, a photo collage depicts “Those our Mission Serves.” The board contains pictures of friends, relatives and employees who serve or have served in the military. It is an everyday reminder of the passion and dedication to their work that is universal among the company’s employees share.

SI2 possesses three unique parts to its business model that are a boon to DoD and prime customers:

1. They are easy to work with,

2. They have agile in-house design and testing capabilities, and

3. They are able to leverage other people's money (OPM) and their own investments by selective partnering with government and industry customers.

This is accomplished by sharing their years of industry knowledge and processes including the Small Business Innovative Research (SBIR) process, the Other Transaction Authority (OTA) process, and Cooperative Research and Development Agreements (CRADA).

Always focused on Innovation, SI2 was the very first member of the NextFlex consortium and belongs to many Other Transaction Authority Consortia addressing the needs of the DoD space.

SI2 operates out of approximately 16,000 ft2 of office, fabrication, and testing space using ISO 9001:2015 certified processes and controls for development of antennas, arrays, Flexible Hybrid Electronics (FHE) and RF absorber products.  SI2 uses both conventional and additive manufacturing approaches to provide solutions to customers, with most of the additive manufacturing in house using both off-the-shelf and custom printers and materials. For additive manufacturing, SI2 maintains a current suite of Multifunctional 3D Printers including: Fused Deposition Modeling, Pastes, Clays, and Adhesives; Multiple Heads, Dual Filament Extrusion, and Roll to roll industrial inkjet printers with inline drying and RF test capabilities. SI2 is also in the process of installing a large format 5-axis multi-head printer with 100 ft3 working space to address FHE on existing radomes and other structures.     

The company recently expanded both the size of its facility and its in-house testing capabilities. It also plans to make its specialized test equipment available to other small businesses to improve MA small business competitiveness and encourage industry collaboration – all with a common goal to get winning solutions to the warfighters as quickly as possible.

This specialized test equipment includes a SATMO range (Fig SATMO range), a high temperature furnace for RF hardware testing, and multiple low frequency waveguides for specialized test. Interested small businesses should visit the SI2 website at or reach out via email at

The SI2 team embodies the “work hard, play hard” mantra, and enjoys a variety of company outings and events together. They are always interested in identifying and cultivating new talent, even if they are not currently hiring. Prospective candidates should send a resume, salary requirements and a statement of citizenship to


SI2 Team at a recent summer outing: