Senior Software Engineer, Cryptography

Somerville, Massachusetts, United States

Headquartered in Boston, Massachusetts, VIA is a mission-critical software company that enables organizations to share and analyze sensitive data at speed without compromising security or control. VIA’s decentralized architecture keeps data sovereign, while its agentic AI helps organizations solve critical challenges, and its military-grade security governs access. Designed for simplicity, rapid deployment, and disconnected environments, VIA makes sensitive data usable wherever the mission happens, even offline.

The Department of War, Fortune 50 companies, and critical infrastructure companies around the globe trust VIA to help them solve their toughest analytics and digital security challenges. Learn more:  .

An impressive mission requires an equally impressive Senior Software Engineer.

As a key technical contributor at VIA specializing in Cryptography, you will design, implement, and automate secure, scalable microservices leveraging cutting-edge privacy and Web3 technologies. You will collaborate with senior engineers and developers on VIA's Zero Trust Fabric : A product where passwordless login, decentralized identity and blockchain integration come together to provide the highest level of security to individuals and organizations.

You will excel in this role if you are motivated by solving complex architectural challenges and championing software excellence in the intersection of cryptography, Web3, and cloud platforms. Are you ready to join us?

In this role, you will:

Design and deliver core architecture:

• Lead the design and development of secure, reliable microservices, applying best practices in software architecture
• Define, document, and drive the adoption of efficient end-to-end SDLC and CI/CD automation pipelines
• Proactively monitor, troubleshoot, and optimize the performance of deployed applications

Build Web3 & privacy-preserving systems:

• Integrate VIA's Web3 components and privacy-preserving technologies (e.g., cryptography, passwordless login, classical & post-quantum cryptography, zero knowledge proofs)
• Develop and execute comprehensive automated testing strategies to ensure high software quality and robustness
• Continuously explore and integrate advancements in privacy, cryptography, and distributed systems

Collaborate on strategy & best practices:

• Serve as a subject matter expert in privacy and security, guiding project delivery and technical choices
• Clearly articulate complex software designs and technical processes to diverse, cross-functional teams

What you will bring to this role:

• Bachelor’s degree or higher in computer science, mathematics, engineering, or science
• 5+ years of relevant full-stack or backend development experience
• Strong experience with cloud-based microservices architecture, including zero-trust design principles
• Experience developing RESTful APIs (e.g., FastAPI) secured by OAuth2/JWT
• Experience integrating asymmetric and/or symmetric encryption, hashing, and digital signatures in applications
• Exposure to Web3 technologies such as smart contracts and multi-signature setups
• Working knowledge of Docker containers and Helm charts
• Ability to advocate for technical excellence and maintain high software engineering standards
• Proven ability to give and receive thoughtful feedback on design documents
• Previous experience leading an Agile team of developers (a plus)
• Exposure to blockchain systems, zero-knowledge proofs, IETF RFCs, or FIPS/NIST/CNSA-validated cryptography (a plus)
• Exposure to Istio Service Mesh and observability tooling (a plus)
• Working knowledge of data structures, algorithms, databases (SQL and No
  
  SQL), and in-memory data storage (a plus)

What does it take to be a successful VIAneer? Let’s break it down, our VIAneers are:

• Self-motivated and passionate about leaving everything they touch better than how they found it
• Firm believers that people should love what they do and are eager to build a culture that enables them to do their best work
• Creative problem solvers who respectfully challenge the status quo in the pursuit of excellence
• People who lead discussions with curiosity and value…