ZipRecruiter

Log In

1

Defense Contractor Software Engineer Jobs in Massachusetts

Mosaic.tech

Software Engineer (Defense)

Boston, MA · On-site

$100 - $130/hr

From critical infrastructure to defense, we serve major airlines and U.S. and allied government ... You will work with a cross-functional team, including end-users, other engineers, and deployment ...

FishEye Software

C++ Software Engineer

Maynard, MA · On-site

$190K/yr

FishEye Software is looking for a skilled C++ Software Engineer. You'll build high-performance ... Design, implement, and test C++ software for real-time and embedded defense systems. * Participate ...

FishEye Software

C++ Software Engineer

Maynard, MA · On-site

$80K - $190K/yr

Design, implement, and test C++ software for real-time and embedded defense systems. * Participate ... US Citizenship is required. * BS in Computer Science, Engineering, or related field * Minimum of 3+ ...

Saab

Senior Software Engineer

North Grafton, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Acushnet, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Boston, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Burlington, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Arlington, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Carlisle, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Boston, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Canton, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

North Attleboro, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Rochester, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Duxbury, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

North Reading, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

Saab

Senior Software Engineer

Newton Center, MA · On-site

$138K - $180K/yr

S. defense programs is highly desirable * Experience developing products/solutions for Naval and ... Saab is a federal government contractor and adheres to policies and programs necessary for ...

next page

Showing results 1-20

All JobsDefense Contractor Software Engineer JobsDefense Contractor Software Engineer Jobs in Massachusetts

Defense Contractor Software Engineer information

What is a defense contractor software engineer?

A Defense Contractor Software Engineer develops, tests, and maintains software systems for military and defense applications. They work for private companies that contract with government agencies, such as the Department of Defense, to create secure and reliable software solutions. Their work often involves embedded systems, cybersecurity, and compliance with strict government regulations. This role requires a security clearance, knowledge of specialized programming languages, and an understanding of defense industry standards.

What does a defense contractor software engineer do?

As a Defense Contractor Software Engineer, your daily responsibilities may include designing, coding, and testing software for defense systems, debugging complex issues, and ensuring products comply with security and regulatory standards. You'll often collaborate closely with systems engineers, hardware teams, and project managers to deliver integrated solutions. Depending on your project, you might also participate in technical reviews, support integration and testing activities, and maintain thorough documentation. Working within a multidisciplinary team, you will play a key role in delivering reliable and secure technology critical to national defense.

What skills and qualifications are needed to thrive as a defense contractor software engineer?

To excel as a Defense Contractor Software Engineer, you should possess strong programming skills in languages like C++, Java, or Python, a bachelor's degree in computer science or engineering, and eligibility for security clearance. Familiarity with tools and frameworks such as embedded systems, real-time operating systems (RTOS), and secure software development methodologies is often required, along with certifications like Security+ or CISSP. Outstanding problem-solving, attention to detail, and the ability to communicate effectively within multidisciplinary teams are valuable soft skills. These capabilities ensure project success, compliance with stringent regulations, and the ability to innovate in high-stakes, mission-critical environments.

What are the most commonly searched types of Defense Contractor Software Engineer jobs in Massachusetts?

The most popular types of Defense Contractor Software Engineer jobs in Massachusetts are:

What are popular job titles related to Defense Contractor Software Engineer jobs in Massachusetts?

For Defense Contractor Software Engineer jobs in Massachusetts, the most frequently searched job titles are:

What job categories do people searching Defense Contractor Software Engineer jobs in Massachusetts look for?

The top searched job categories for Defense Contractor Software Engineer jobs in Massachusetts are:

Defense Contractor Software Engineer jobs near you
Infographic showing various Defense Contractor Software Engineer job openings in Massachusetts as of August 2026, with employment types broken down into 84% Full Time, 12% Part Time, and 4% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution.

Lead Software Engineer, Client Systems

PreVeil, Inc.

Boston, MA • On-site

Full-time

Medical, Dental

Re-posted 4 days ago

Job description

PreVeil is a fast-growing, profitable SaaS company providing best-in-class encrypted email and file sharing for organizations that handle sensitive data. We've been named a Best Place to Work three years in a row and recognized by PC Magazine as the best encrypted email and file-sharing platform for five consecutive years.
Beyond security, PreVeil helps defense contractors meet strict U.S. federal cybersecurity compliance requirements-most notably the Cybersecurity Maturity Model Certification (CMMC), which is required to do business with the Department of Defense. More than 2,500 defense customers rely on PreVeil, and over 60 have successfully achieved certification, placing PreVeil among the most proven platforms in this space.
This role is 100% remote.
We're seeking a hands-on Lead Software Engineer, Client Systems, to build and evolve software that runs on customer endpoints and securely coordinates with PreVeil's cloud services. This is not a traditional web frontend or backend API-only role. The work spans local state, file-system integration, networking, synchronization, identity, reliability, and secure protocols across Windows and macOS, with supporting web and cloud services.
Strong candidates may come from desktop applications, endpoint security, embedded or device-to-cloud systems, file synchronization, collaboration software, developer tools, or other technically complex client environments. We value strong computer science fundamentals and experience solving difficult production problems more than experience with any specific programming language.
Key Responsibilities
  • Own the architecture and implementation of software running on customer endpoints and its communication with PreVeil's cloud services.
  • Design reliable synchronization and state-management systems across clients, devices, and backend infrastructure, including offline behavior, retries, event ordering, conflict resolution, and recovery from partial failures.
  • Build software that interacts with local storage, file systems, networking, authentication, access controls, and operating-system services.
  • Design and evolve secure protocols and interfaces across client and cloud components.
  • Ensure the security and reliability of our applications through secure coding techniques and thoughtful system design.
  • Diagnose and resolve complex issues involving performance, scalability, connectivity, and reliability.
  • Collaborate with engineering, product, design, infrastructure, and security teams throughout feature development.
  • Guide and mentor junior and mid-level engineers through code reviews, design reviews, and hands-on technical leadership.

Role Structure and Initial Ownership
  • This is a hands-on individual-contributor leadership role with no direct reports or formal performance-management responsibilities. You will lead through architecture, technical judgment, project ownership, design reviews, code reviews, and mentorship while remaining actively involved in implementation.
  • Initial areas of ownership may include:
  • Modernizing and evolving PreVeil's Windows and macOS client architecture.
  • Improving real-time synchronization, local-state management, and reliability across devices.
  • Building enterprise identity capabilities such as SSO, Okta, Active Directory, provisioning, and role-based access control.
  • Advancing semantic search across end-to-end encrypted email and file content.
  • Improving client performance, diagnostics, testing, release processes, and production reliability.
  • Mentoring junior and mid-level engineers and raising engineering standards across the team.

Qualifications
  • BS or MS in Computer Science or a related field, or equivalent practical experience.
  • Strong computer science fundamentals, including data structures, algorithms, concurrency, networking, and systems design.
  • Substantial experience building commercial software that runs on a client, endpoint, desktop application, embedded device, or similar distributed environment.
  • Experience shipping production software used by external customers and supporting it through performance, reliability, and failure scenarios.
  • Experience designing distributed systems involving synchronization, consistency, event delivery, retries, fault tolerance, or multi-device coordination.
  • Demonstrated ownership of complex technical initiatives from architecture and design through implementation and production operation.
  • Ability to lead technical projects, influence architectural direction, and mentor other engineers while remaining hands-on.
  • Proficiency in at least one production programming language. No specific language is required.

Our Technology Environment
PreVeil currently uses Python and Go across core services, C++ for portions of the Windows client, Swift and native tooling on macOS, web technologies for browser-based clients, and SQL/SQLite for relational and local storage. Direct experience with these technologies is helpful but not required.
Preferred Skills
  • Experience building native or cross-platform applications for Windows, macOS, Linux, embedded devices, or endpoint environments.
  • Experience working with local storage, file systems, access controls, sockets, network protocols, or operating-system services.
  • Understanding of cryptographic fundamentals, including public-key encryption, symmetric encryption, and digital signatures.
  • Experience with secure identity and authentication systems such as PKI, WebAuthn, SSO, SAML, OIDC, SCIM, Active Directory, or role-based access control.
  • Experience with file synchronization, offline-first systems, replication, consistency models, conflict resolution, or multi-device state management.
  • Experience building security, privacy, collaboration, endpoint, or other reliability-sensitive products.

What We Offer
  • The opportunity to solve meaningful problems that improve privacy and security for everyone.
  • Competitive salary and equity package.
  • Health and dental insurance.
  • A team of highly motivated, mission-driven professionals.

Apply