Top Tech Startups in Washington DC, DC in 2026

Vannevar Labs builds software for the country's most critical national security problems. We are uniquely qualified to succeed in this $740B market; our founders have 30 years of combined experience across national security, government sales and CIA, In-Q-Tel, DoD/JSOC, Harvard, and Stanford. We're supported by a number of VCs, including Felicis, DFJ Growth, Point72, Costanoa, and General Catalyst, amongst others. We believe our military service members and intelligence officers deserve access to the best technology American innovation can offer, and we are building great products for this mission. If you're someone who wants to work with conscientious people on things that matter, we'd love to hear from you!

Archesys provides a wide range of technical services and has been doing so for over 20 years, making a significant impact in the areas of organization, culture, and technology in both the private and public sectors. From digital modernization to process management, our team is the go-to resource for various government agencies looking to improve or overhaul their operations.

At Improbable, we believe that simulations as large and complex as the real world are the next fundamental breakthrough technology. Like in the real world, objects in these simulations will change in response to their environment, and their interactions will combine to form massive, complex systems. We are building the platform to make these simulations possible. New worlds for gaming and entertainment can now be created using our product, SpatialOS. Our technology creates permanent, persistent and engaging experiences: worlds where your actions really matter. The same technology that makes imaginary worlds feel real can also illuminate complex systems at work in reality. We use insight acquired through simulation to solve real world problems. You can find out more about our technology on our website - improbable.io

From strategic consultancy and growth sprints through to digital marketing campaign deliverables and channel management.

Starfish Space is a fast-growing space startup based in Seattle, Washington. We're focused on building the infrastructure to allow humanity to expand into and across space. As the first step in this journey, we've developed a servicing spacecraft called Otter, a small and versatile vehicle that will enable affordable and available satellite servicing for the first time in the history of the space industry. We launched our Otter Pup 2 demonstration mission in the summer of 2025 and we’ll be launching multiple additional satellites in the coming years, with our first three Otter missions under contract with NASA, the U.S. Space Force, and Intelsat. We have raised over $150M in venture capital funding to-date, and grown to a team of 90+.

A global platform that empowers sustainability: news, articles, startups, and a sustainability index. OUR STORY We were founded in Rome in 2014. From there, we established our presence online via our sustainability news portal: impakter.com PARTNERS We are partners of many UN organisations, NGOs, think tanks, research centers and Universities. PROFILES: Linkedin: linkedin.com/company/impakter Twitter: twitter.com/Impakterdotcom Facebook: facebook.com/impakterdotcom Instagram: instagram.com/impakter

EngagedMD is a fast-growing B2B software company that has developed the leading patient journey management solution for the fast-growing fertility sector. Nearly half of fertility patients in the US use our eLearn and eSign tools. Clinics use our software to reduce repetitive, manual tasks and streamline the patient journey, which helps them increase capacity and growth while improving the patient experience and reducing doctor and staff burnout. We are known for having a collaborative, friendly, high energy and fast-moving culture and a focused, start-up atmosphere.

We pull, aggregate, and reconcile supplies data from dozens of sources so that data customers want is at their fingertips. To help them get to the data, we have what we consider a best-in-class search and data management experience, primarily driven by a cloud-based web app. When it comes to developing features for Symmetric, our philosophy is simple - everything is built around identifying opportunities for improvement. We believe that healthcare's supply chain is made better when data quality, software, and people are continuously improving. Our current offerings include: - A search tool for browsing our master database and finding the info they need - A virtual item master and master data management framework for users to upload, enrich, and research their supply data - A variety of reports that directly point users to their biggest savings opportunities More at symmetrichealthsolutions.com

We know that you’ll have looked at quite a few company pages but IDT is different. We want people who want to make a big difference to our company with big ambitions. We’re a truly global team, with 1300 people working across all continents, apart from (at the moment!) Antarctica. But we are proud that despite our size, we encourage and support any in-house entrepreneurs to develop their ideas into business action. Our exciting growth plans make it a great time to join us.