3+ YOEUS citizen with bachelor's in CS/CE/SE, 3+ years related experience, current Secret clearance and ability to obtain Top Secret, familiarity with systems engineering for software, Agile/DevSecOps, and strong communication skills.
Space Dynamics Laboratory: Develops advanced sensor systems and satellites for space missions.
8+ YOEBachelor's in a technical field, 8+ years software systems engineering experience, active DoW SECRET clearance, U.S. citizenship, proficiency with SysML (Cameo), Google Protocol Buffers, containerized environments, and object-oriented languages (C#, C++, Java).
7+ YOEBachelors in CS/CE/Software Engineering, 7+ years related experience, current Secret clearance required, able to obtain Top Secret, experience with systems engineering applied to software, Agile/DevSecOps familiarity and coding/scripting experience preferred.
7+ YOEBachelor's in CS/CE/SE, 7+ years related experience, current Secret clearance and ability to obtain Top Secret, familiarity with systems engineering applied to software, Agile/DevSecOps, and strong communication skills.
Sentinel - Sr. Principal Systems Engineer - 14725*
Roy or Manhattan Beach or Colorado Springs
$123k-$204k/yrOnsiteFull Time
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
8+ YOE8+ years in systems engineering; US citizen with active DoD Secret clearance; MBSE; cloud/IT-centric systems; capable of leading cross-functional teams.
Model-based systems engineering, MBSE, Cloud, High performance computing, Virtualization, Software systems
General Atomics Aeronautical Systems: Designs and manufactures unmanned aircraft and radar systems.
11+ YOEManage software engineering projects and personnel for embedded controls, ensure requirements traceability, apply ARP4754/DO-178 standards, and possess 11+ years software engineering experience with aircraft braking systems and certification experience.
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
3+ YOEBachelor's or Master's in computer science/software/mathematics, 3 years' experience with BS (1 year with MS), ability to obtain Secret clearance, familiarity with DOORS, Cameo/MagicDraw, SysML/UPDM, and MBSE.
DOORS, Cameo/MagicDraw, SysML, UPDM, Model-Based Systems Engineering (MBSE)
Systems Planning and Analysis: Provides technical and analytical support to national security agencies.
4+ YOEBachelor's in engineering or CS, active SECRET clearance, 4+ years related experience with 6-DoF simulation tools, software development, structural/thermal/fluids/dynamics analyses, and technical writing.
AtlassianNASDAQ: TEAM: Develops software for team collaboration and project management.
Experienced systems engineer familiar with concurrent, low-level, cross-platform software; comfortable with Go and Git internals; builds fast, reliable, invisible production systems and integrations with coding agents.
Go, Git, Cursor, Claude Code, Copilot, Codex, Gemini CLI, SQLite
Operations Software Engineer: Post-Trade Systems Builder
London or New York City or Salt Lake City
OnsiteFull Time
Xantium: Global investment firm specializing in multi-strategy quantitative trading.
3+ YOEBachelor’s in CS/Engineering; 3–7+ years finance software; Python or Java; SQL; familiarity with trade lifecycle; strong problem-solving and communication.
Python, Java, SQL, FIX protocol, SWIFT messaging, AWS, GCP, Azure, data pipelines, workflow orchestration
Peraton: National security and mission-critical government technology services provider.
BS (STEM) required; experience/coursework in object-oriented programming; technical writing; ability to identify logic errors and safety hazards in software/hardware; U.S. citizenship and ability to obtain/maintain Secret clearance.
Object-Oriented Programming languages, Integrated Development Environments, Model-Based Systems Engineering (MBSE)
Boston or Salt Lake City or San Francisco or New York City
RemoteFull Time
Databento: Provides a pay-as-you-go financial market data platform.
5+ YOEStrong proficiency in C++ and C#, 5+ years software engineering experience preferred, experience with low-latency systems, message parsers, multithreading, and maintaining client libraries.
New York City or San Francisco or Salt Lake City or Los Angeles or Seattle or Austin or Washington or Philadelphia or San Diego or Chicago or Atlanta or Australia or Canada or South America
$146k-$215k/yrRemoteFull Time
Flex: A financial platform allowing renters to split monthly rent payments.
6+ YOE6+ years software engineering experience, 4+ years with Java, experience with backend systems, APIs, data pipelines, AWS, and distributed teams.
San Francisco or Miami or Atlanta or Salt Lake City or Phoenix or Washington D.C. or Los Angeles or Seattle or Chicago or Boston or Austin or New York City
$153k-$205k/yrRemoteFull Time
CircleNYSE: CRCL: Digital currency issuer and blockchain financial infrastructure provider.
6+ YOE6+ years professional software development with Java and Go; bachelor’s in CS or equivalent; led small technical teams; experience with payment systems, RESTful APIs, cloud services, and SQL; strong system design, testing, and communication skills.
Java, Go, AWS, Google Cloud, Microsoft Azure, SQL, NoSQL, RESTful API
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
10+ YOE8+ MgmtU.S. citizen with active/obtainable TS/SCI with polygraph, STEM degree, ~10+ years relevant experience including 8+ years leading software/system engineering and defense/IC experience, program/project planning, and technical leadership.
Audio Enhancement: Develops audio and video technology for K-12 educational environments.
6+ YOEBachelor's in CS or related, 6+ years software development experience with Node.js and TypeScript, strong frontend (React/Vue), cloud (AWS), SQL/NoSQL, event-driven systems, observability, and debugging skills.