Software Engineer

ExistX Software EngineerExistX was founded in 2023 with the goal to combine cutting edge invention with practical implementation in the unique environments our customers demand to solve national security problems in the real world.Our team of software and systems engineers bring experience working with cutting-edge advancements in cryptography, cyber-physical systems, MBSE, and formal methods for both government and commercial applications. We leverage a unique suite of capabilities—incubated through our sister R&D firm, Galois, and other key research partnerships—to rapidly prototype and deliver impactful solutions to the warfighter.There exists a solution X that satisfies problem P. The solution exists. Let's build it together.About This RoleIn this role, you will rapidly prototype new capabilities, create performant backend services, and collaborate to translate complex, cutting edge software designs into software solutions for mission-critical systems. Engineers collaborate with cross functional teams of clients, partners, ExistX employees, and domain experts to design, develop, implement, and deploy advanced algorithms and software systems.ResponsibilitiesTranslate complex research designs into seamless, high-performance software applicationsDesign and implement mission-critical software components and servicesCollaborate with cross-functional teams of experts to implement modern software engineering best practicesMentor developers and provide hands-on technical guidanceDevelop system architectures and help drive the technical roadmapCreate and maintain technical documentationQualificationsRequiredBS in Computer Science or related field5+ years professional software development experience developing enterprise software applicationsExpertise with multiple backend programming languages such as Java, C/C++, Rust, Python, or similar languagesExperience developing scalable systems capable of handling large data setsPassion for writing high quality, high performance codeStrong technical writing skills and experience with developing and maintaining documentationPreferred QualificationsKnowledge of cryptographic algorithms or cybersecurity conceptsExperience with programming languages such as Cryptol, Haskell, or similar domain specific languagesExperience with microservices and cloud-native platforms such as Docker, Kubernetes, AWS or AzureExperience leading technical initiatives and mentoring developersExistX is headquartered in Arlington, Virginia with additional locations in Dayton, Ohio and Portland, Oregon. We have some remote employees distributed across the U.S.This position will require on-site presence at client locations in and around Baltimore, Maryland and Annapolis, Maryland. This position requires eligibility to work with cleared programs (active clearance required). Hybrid or onsite presence will be determined based on contract expectations and security requirements.ExistX offers a highly competitive benefits program to support employees and their families, including:Competitive salariesEmployer paid medical insurance planHealth Savings Account (HSA) with employer contributionsEmployer paid dental and vision insurance plans401(k) retirement plan with employer matchFlexible work location with a remote friendly cultureGenerous paid time off (25 days per year)The employee must be a U.S. Citizen with an active TS/SCI + full-scope Poly.