Full-Time
Software Engineer 1
Posted on 8/6/2026
Everfox
501-1,000 employees
High-assurance cybersecurity platform for government
Compensation Overview
£32.6k - £53.6k/yr
London, UK + 1 more
More locations: Great Malvern, Malvern, UK
Hybrid
Hybrid role; London-based employees travel to Malvern two days per month.
Bachelor's
 Software Engineering (1) |
|---|
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- A Bachelor's degree or equivalent in a STEM discipline, such as Computer Science, Software Engineering, Computer Engineering, Mathematics, Physics, or a related technical field.
- Recent graduation within the last two years, or 1–2 years of experience in a Junior Software Engineering or Software Development role.
- Experience with programming.
- Domain knowledge of, or an interest in, application security.
- Basic understanding of Linux.
- Suitability for holding UK security clearance if needed.
- Develop software using C++, Go, C#, or C-like languages.
- Write high-quality code following the agile-based development methodology and chosen toolset.
- Test software both formally and ad hoc.
- Produce documentation using industry-standard tools.
- Work within a closely knit team.
- The desired programming languages are C++, Go, C#, or C-like languages.
- Problem-solving and analytical skills.
- Ability to work independently.
- Ability to work collaboratively across functions and to be adaptable and flexible.
- Good written and verbal communication skills.
Everfox provides defense-grade cybersecurity platforms for government, defense, intelligence, and regulated sectors. It secures cross-domain data access, threat protection, and insider-risk management through Cross-Domain Solutions, Content Disarm & Reconstruction, and Insider Risk Analytics. Since acquiring Garrison Technology, it adds hardware-enforced security (hardsec) using FPGA to protect air-gapped environments and enable multi-domain access on one device. Backed by 25+ years in the field and now independent under TPG, Everfox aims to protect critical data and networks, reduce insider and external threats, and simplify secure cross-domain access.
Company Size
501-1,000
Company Stage
Seed
Total Funding
$8.1M
Headquarters
Herndon, Virginia
Founded
2023
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Simplify's Take
What believers are saying
- Microsoft’s February 2026 Azure approval unlocks broader government and contractor deployments.
- DOE bought $4.05 million of Everfox software and hardware on June 30, 2026.
- Antillion and Anduril partnerships extend Everfox into rugged edge, NATO, and allied missions.
What critics are saying
- Revenue depends on U.S. federal procurement cycles; a budget slip hits 2027 bookings fast.
- Anduril, Virtru, and cloud-native rivals attack Everfox’s edge, browser isolation, and zero-trust stack.
- Leadership churn—Wajsgras, DeSimone, O’Brien, and Mustacchio in 2026—signals integration strain and execution risk.
What makes Everfox unique
- Everfox owns defense-grade cross-domain controls, now approved across Microsoft Azure clouds, February 2026.
- HSV-T and Garrison hardsec combine FPGA-enforced isolation with software for tactical data transfer.
- USSOCOM and FBI procure exact Everfox products, proving sticky, mission-critical federal integration.
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Benefits
Health Insurance
Unlimited Paid Time Off
401(k) Company Match
Growth & Insights and Company News
6 month growth
↓ -1%1 year growth
↑ 0%2 year growth
↑ 2%Everfox reaffirms commitment to UK Armed Forces Covenant. Company's Pledge Follows on Heels of Receiving Defence Employer Recognition Scheme Silver Award LONDON, United Kingdom, August 5th, 2026 - Everfox, the global defence technology company delivering trusted information and high-assurance cybersecurity solutions for mission-critical environments, today announced it has renewed its commitment to the UK Armed Forces Covenant during a signing ceremony held at the company's London office. Everfox Chairman and CEO Dave Wajsgras attended the event and personally signed the pledge. "As a company whose mission is to enable warfighters to achieve decision dominance in highly complex operational environments, we are proud to maintain a culture within Everfox that values the contributions and expertise of members of the Armed Forces who help us engineer and deliver these important technological innovations," said Wajsgras. "We are honoured to remain committed to strengthening our support for the Armed Forces community." "Everfox's longstanding support for the UK Defence community reflects a deep appreciation of the values, skills and experiences that members of the Armed Forces community contribute to our nation's security and prosperity. Its commitment to fostering an inclusive and supportive workplace for serving personnel, veterans and military families is both commendable and meaningful," said Air Vice Marshal Ola Fashade. "I am proud to join Everfox as it reaffirms its commitment to the Armed Forces Covenant and the enduring partnership between Defence, industry and those who serve." Everfox previously signed the UK Armed Forces Covenant in June 2023 to publicly affirm its commitment to ensuring that members of the Armed Forces community are treated fairly and are not disadvantaged as a result of their service. In June, Everfox was awarded the Defence Employer Recognition Scheme (ERS) Silver Award, which is given to employers that actively support Defence through measures such as supporting Reservists in balancing military and civilian careers, promoting employment opportunities for veterans, and demonstrating leadership commitment to the Armed Forces Covenant. The Defence ERS, administered by the UK Ministry of Defence, recognises organisations that demonstrate exceptional support for Defence personnel, Reservists, veterans, military families and Cadet Force Adult Volunteers. About Everfox. Everfox delivers trusted connectivity to protect the world's most critical environments and safeguard the sensitive data powering decision advantage. Built for mission-critical operations, Everfox protects what matters most by securing how data moves, how users access it, and how threats are neutralized across every domain. Everfox enable mission speed and secure collaboration across networks, domains, and allies while ensuring the data powering AI and advanced analytics remains trusted and protected. Everfox don't just defend systems; Everfox deliver decision dominance. Media Contact
Carlyle acquires encryption hardware maker Secturion Systems; sean Berg named CEO. * The purchase marks the first deal for Carlyle's new middle-market aerospace, defense and government platform * Secturion, founded in 2012, makes NSA-certified hardware encryption products * Carlyle's defense holdings have included Booz Allen, MANTECH and Two Six Technologies Carlyle has acquired Secturion Systems, a Utah company that builds National Security Agency-certified hardware encryption products. Carlyle said Monday the deal is the first investment by its middle-market aerospace, defense, government and industrials platform. Terms were not disclosed. Sean Berg has been named chief executive officer of Secturion. Who will lead Secturion Systems under Carlyle? Berg previously served as CEO of Everfox, where he built the company's position in the cross-domain security market. Carlyle said he brings more than 25 years of technology experience spanning military and private sector roles. Josh Falslev remains chief operating officer and Derek Owens remains chief technology officer at Secturion. What does Secturion Systems build? Founded in 2012, Secturion manufactures hardware encryption products that protect classified information. Its technology handles the storage, processing and transmission of that data on airborne, maritime and ground platforms. The company said its portfolio also supports intelligence applications. How does Secturion fit Carlyle's middle-market platform? Carlyle launched the middle-market platform in May, targeting aerospace, defense, government and industrial companies in the United States and Europe. Ian Fujiyama, the firm's head of aerospace, defense and government, serves as chairman. Aaron Hurwitz and Wes Bieligk oversee the effort with dedicated investment teams. Retired Army Gen. Bryan Fenton, a former commander of U.S. Special Operations Command, joined as an operating executive. Fujiyama called Secturion "a compelling fit" for the platform's opening investment, pointing to the company's products and engineering staff. Carlyle's aerospace and defense holdings have included Booz Allen Hamilton, MANTECH and Two Six Technologies. The firm bought MANTECH in 2022 in an all-cash deal valued at approximately $4.2 billion. D.A. Davidson and Wilson Sonsini Goodrich & Rosati served as the exclusive financial adviser and legal adviser to Secturion, respectively. Latham & Watkins represented Carlyle.
Everfox, a global defence technology company specialising in cybersecurity solutions for mission-critical environments, has appointed John DeSimone as chief operating officer. In his new role, DeSimone will oversee the company's global technology organisations, including product, engineering and information technology. DeSimone brings over 30 years of executive leadership experience in defence, intelligence, cybersecurity and technology. Most recently, he served as chief executive officer of Nightwing, leading the company through its separation from RTX. He previously held the position of president at Raytheon's Cybersecurity, Intelligence & Services business. Dave Wajsgras, chairman and chief executive officer of Everfox, said DeSimone's ability to align product strategy and engineering excellence makes him uniquely qualified to lead the company's next phase of growth.
Everfox, a global cybersecurity firm, has appointed Toby O'Brien as chief financial officer. O'Brien brings over 30 years of financial leadership experience in aerospace, defence, and communications industries. He most recently served as CFO of Intelsat, where he led financial transformation and strategic growth initiatives. Before that, O'Brien spent 34 years at Raytheon in senior finance roles, including helping lead its merger with United Technologies. As CFO, O'Brien will oversee Everfox's global finance organisation, including financial planning, accounting, treasury, and investor relations. He will support the company's growth strategy as it expands its presence in trusted information, AI-enabled operations, and cybersecurity solutions across the US, UK, Canada, and allied markets.
Everfox appoints Tracey Mustacchio as Chief Marketing Officer. Veteran cybersecurity and technology executive to accelerate growth, strengthen market leadership, and advance the company's next phase of transformation HERNDON, Va., June 29, 2026 - Everfox, the global high-assurance cybersecurity company that provides trusted connectivity for AI-powered decision dominance, today announced Tracey Mustacchio as Chief Marketing Officer (CMO). Mustacchio will spearhead Everfox's global marketing organization, leading product marketing, growth marketing, demand generation, communications, analyst relations, brand strategy, customer engagement and market positioning. She will partner with the executive leadership team to strengthen Everfox's market leadership, accelerate growth, expand customer adoption and elevate the company's role in helping organizations securely share, access and act on trusted data across mission-critical environments. "Everfox sits at the intersection of some of the most important trends shaping national security, cybersecurity and AI-enabled operations," said Mustacchio. "The future of national security depends on the ability to securely access, share and act on trusted data. Everfox has built an extraordinary reputation protecting the world's most sensitive information and enabling secure collaboration where it matters most. I'm excited to join the company at this pivotal moment as we help customers operate securely, confidently and at mission speed." Mustacchio brings more than 25 years of executive leadership experience helping technology companies such as Nitel, Secureworks, Nuance Communications, IBM and McAfee rapidly scale, strengthen market positioning, modernize go-to-market strategies and navigate periods of transformation. "Tracey has a proven track record of transforming technology companies into market leaders," said Dave Wajsgras, Chairman and Chief Executive Officer of Everfox. "As AI transforms both the threat landscape and the way organizations operate, trusted access to data has become more important than ever. Tracey's background spanning cybersecurity, data analytics, artificial intelligence and enterprise software uniquely positions her to help advance Everfox's mission and strengthen our leadership position. As we continue building the trusted data platform that enables secure collaboration, AI-powered operations and decision advantage, her experience will help drive our next phase of success." Mustacchio's appointment further strengthens Everfox's executive leadership team as the company continues investing in innovation, strategic growth initiatives and expansion across key global markets. About Everfox. Everfox delivers trusted connectivity to protect the world's most critical environments and safeguard the sensitive data powering decision advantage. Built for mission-critical operations, Everfox protects what matters most by securing how data moves, how users access it, and how threats are neutralized across every domain. Everfox Holdings LLC enable mission speed and secure collaboration across networks, domains, and allies while ensuring the data powering AI and advanced analytics remains trusted and protected. Everfox Holdings LLC don't just defend systems; Everfox Holdings LLC deliver decision dominance.