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Senior Systems Software Engineer Jobs

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Senior Software Engineer (Rust), Intelligence Systems
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Senior Software Engineer (Rust) role at Anduril Intelligence Systems in Reston. Requires 3+ years production Rust, networking expertise, and U.S. Secret clearance. Build high-performance real-time systems with real-world impact.
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Anduril Industries
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Senior Software Engineer, Vehicle Management Systems
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Join Anduril as a Senior Software Engineer in Boston to build safety-critical Vehicle Management Systems. Requires C, RTOS, and embedded protocols expertise. Shape the future of defense technology.
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Anduril Industries
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Senior Software Test Engineer (Python), Intelligence Systems
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Join Anduril as a Senior Software Test Engineer in Reston, VA. Leverage your Python and test automation expertise to validate advanced networking systems for defense technology. Active secret clearance required.
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Anduril Industries
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Senior Software Engineer (Full Stack), Intelligence Systems
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Join Anduril as a Senior Software Engineer (Full Stack) in Reston, building AI-powered defense systems with React, Redux Toolkit, and RESTful APIs. Requires active U.S. Secret clearance.
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Anduril Industries
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Senior Mission Software Engineer, Mission Systems
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Join Anduril as a Senior Mission Software Engineer in Costa Mesa, building low-latency C++/Rust solutions for autonomous defense systems. Requires 6+ years experience, Kubernetes skills, and U.S. Secret clearance eligibility.
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Anduril Industries
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Senior Software Engineer (Rust), Intelligence Systems
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Senior Software Engineer (Rust) role at Anduril Intelligence Systems in Reston. Build high-performance real-time systems, refactor complex codebases, and shape critical defense technology. Requires 3+ years Rust, networking expertise, and U.S. Secret clearance eligibility.
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Anduril Industries
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Senior Software Engineer, Design Systems
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Thumbtack seeks a Senior Software Engineer in Toronto to evolve its Thumbprint design system across web, iOS, and Android. Requires deep TypeScript and React expertise plus hands-on AI tooling fluency with Claude Code or Cursor.
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Thumbtack
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Senior Software Engineer, Design Systems
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Thumbtack seeks a Senior Software Engineer in San Francisco to evolve its Thumbprint design system across web, iOS, and Android. Requires deep TypeScript and React expertise plus hands-on AI tooling fluency with Claude Code or Cursor.
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Thumbtack
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Senior Software Engineer - Accounting & Ledger Systems
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BitGo seeks a Senior Software Engineer in NYC to design and extend core ledger systems, chart-of-accounts, and reconciliation across on-chain and off-chain data. Requires 5+ years backend experience and strong accounting fundamentals.
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BitGo
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Senior Software Engineer – Agent Systems
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Join a 0→1 Agent Systems team as a Senior Software Engineer building AI-powered internal agents. Requires 5+ years of backend experience, LLM/inference pipelines, and rapid prototyping skills. US-based.
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Kraken Digital Asset Exchange
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Senior Software Engineer, Vehicle Management Systems
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Lead Vehicle Management Systems architecture at Anduril's Maritime Division in Costa Mesa. Requires 7+ years in real-time embedded software, FDIR design, and vehicle state machines. U.S. Secret clearance needed.
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Anduril Industries
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Senior Software Engineer, Backend Systems
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Senior Backend Engineer role in NYC to build scalable distributed systems and LLM agent infrastructure. Requires 4-6+ years experience, Python/Go/Rust, AWS, and ML inference expertise. Above-market salary, equity, and flexible PTO.
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Distributed Spectrum
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Senior Software Engineer(Distributed Systems)
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Senior Software Engineer role focused on distributed data systems, lakehouse platforms, and production dbt, Airflow, Trino, and Iceberg. Requires 8+ years of engineering experience and strong SQL, Python, and Terraform skills.
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Workday
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Senior Software Engineer, Actuation and Control Systems
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Lead control software development for autonomous underwater vehicles at Anduril's Maritime Division in Costa Mesa. Requires 7+ years in control systems, C++/Rust proficiency, and PID/LQR/MPC expertise. U.S. Secret clearance needed.
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Anduril Industries
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Senior Systems Software Engineer
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Senior Systems Software Engineer in Augusta to design and maintain geospatial intelligence systems. Requires 7+ years of software development, DoD 8140 certification, CI/CD security, and Java or Python skills.
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Accenture Federal Services
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Senior Software Development Engineer in Test (SDET), QA - AI Systems
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Senior SDET role in Canada to own quality for Nexxa's AI agent systems. Requires 5+ years in test automation, strong Python skills, and CI/CD expertise. Build evaluation harnesses and simulation environments for industrial AI.
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Nexxa.AI
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Senior Software Development Engineer in Test (SDET), QA - AI Systems
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Senior SDET role in Sunnyvale, CA to own quality for Nexxa's AI agent systems. Requires 5+ years in test automation, strong Python skills, and CI/CD expertise. Build evaluation harnesses and simulation environments for industrial AI.
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Nexxa.AI
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Senior Software Engineer, Systems Infrastructure
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LinkedIn seeks a Senior Software Engineer in Bengaluru to build and operate large-scale data infrastructure powering core applications. Requires 4+ years in distributed systems and Java, Python, or Go. Hybrid role with mentoring and open-source impact.
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LinkedIn
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Senior Embedded Software Engineer for Wireless Systems
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Join Intracom Defense as a Senior Embedded Software Engineer for Wireless Systems in Greece. Requires 8+ years in embedded SW, C, RTOS, and low-level drivers. Work on cutting-edge defense tech with a top NATO supplier.
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Intracom Defense
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Senior Staff AI-Native Software Engineer – Agentic Systems
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ServiceNow seeks a Senior Staff AI-Native Software Engineer in San Francisco to design and ship production-grade multi-agent systems. Requires 8+ years in software engineering, Python, and hands-on agentic AI experience.
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Armis
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About the Senior Systems Software Engineer role

Discover and apply for Senior Systems/Software Engineer jobs, a pivotal career path at the intersection of deep technical architecture and hands-on software development. Professionals in this senior role are the cornerstone of complex technical projects, responsible for designing, building, and maintaining the robust systems and software that power modern enterprises. This is not an entry-level coding position; it is a strategic role demanding a holistic understanding of how software interacts with hardware, networks, and operating environments to deliver reliable, scalable, and high-performance solutions.

Typically, a Senior Systems/Software Engineer engages in the full lifecycle of system creation. Common responsibilities include analyzing system requirements, architecting high-level designs, and developing critical software components. They write and review code for everything from low-level operating system modules and compilers to networking protocols, distributed databases, and cloud-native services. A significant part of their role involves troubleshooting, debugging, and performance optimization, often diagnosing intricate issues that span multiple layers of the technology stack. They are also expected to create and execute comprehensive test plans, develop automation tools, and produce detailed technical documentation. Leadership is implicit in the title; these engineers mentor junior team members, collaborate cross-functionally with QA and operations teams, and drive technical decisions to resolve complex challenges.

To excel in Senior Systems/Software Engineer jobs, a specific set of skills and experience is required. A strong foundation in computer science fundamentals—data structures, algorithms, and systems design—is non-negotiable. Proficiency in multiple programming languages (such as C++, Java, Python, or Go) and scripting is essential. Deep knowledge of operating systems (Linux/Unix internals), networking concepts (TCP/IP, L2/L3 protocols), and software engineering best practices (version control, CI/CD) is standard. Experience with distributed systems, cloud platforms (AWS, Azure, GCP), and containerization technologies (Docker, Kubernetes) is increasingly critical. On the soft skills side, excellent problem-solving abilities, effective communication for articulating technical concepts, and project leadership are paramount. Most positions require a bachelor’s or master’s degree in Computer Science, Electrical Engineering, or a related field, coupled with 5+ years of progressive, hands-on experience in systems-level software development.

For seasoned professionals seeking to leverage their extensive technical expertise to build foundational technology, exploring Senior Systems/Software Engineer jobs offers a path to substantial impact, guiding projects from conception through to deployment and evolution in a constantly changing digital landscape.