Top Senior Software Engineer Jobs

Build scalable, high-performance web products supporting journalism and reader experiences. Develop frontend interfaces, backend APIs, third-party integrations, and cloud-based solutions using JavaScript frameworks, Node.js, and preferably AWS. Contribute to architecture, technical decisions, engineering standards, system performance, and product delivery while collaborating with distributed cross-functional teams.

Design, build, and deploy production-grade Java and Python applications with observability integrated throughout. Standardize telemetry using OpenTelemetry, leverage BigPanda and Google Cloud Observability, and develop AI/ML-enabled predictive and self-healing operations. Define SRE metrics, troubleshoot complex systems, lead automation initiatives, and provide technical guidance across engineering teams.

Develop, test, deploy, and document Java or C++ software for space systems supporting real-time situational awareness. Collaborate with systems, hardware, and test engineers across the software development lifecycle, modernize existing capabilities, use automated build pipelines, and take ownership of portions of the codebase. This is a full-time onsite role requiring active TS/SCI clearance, CI polygraph eligibility, U.S. citizenship, and Security+ certification.

Provides technical leadership for complex software engineering programs supporting electronic warfare, secure communications, radar warning, and electronic attack systems. Responsibilities include designing, implementing, modifying, testing, and evaluating C++ software in Linux environments; presenting technical designs to customers; mentoring engineers; developing project artifacts; improving engineering processes; and coordinating with systems, hardware, test, and management teams.

Provides technical leadership for complex software engineering programs supporting electronic warfare, secure communications, radar warning, and electronic attack systems. Responsibilities include C++ software development in Linux, design analysis, code modification, testing and validation, technical presentations, process improvement, mentoring, and collaboration with systems, hardware, and test engineering teams. The role is fully onsite and requires an active DoD Secret clearance.

Provides senior technical leadership for complex software engineering programs supporting electronic warfare, secure communications, radar warning, and electronic attack systems. Responsibilities include designing, implementing, testing, and evaluating C++ software in Linux environments; presenting technical designs to customers; mentoring engineers; improving development processes; and collaborating with systems, hardware, and test teams throughout the product lifecycle. The role is fully onsite and requires an active DoD Secret clearance.

Leads a software engineering team developing and maintaining CEMA and Compass Call ground support tools, frameworks, and test environments. Responsibilities include software design in C++, C, Rust, and MATLAB on Linux; embedded hardware integration; testing; CI/CD and DevSecOps implementation; technical reviews; cross-functional issue resolution; mentorship; and production selloff support. The role is onsite in Hudson, New Hampshire and requires an active Secret clearance.

Design, develop, integrate, and verify real-time mission software in C++ and C# on Linux platforms for electronic warfare systems. Apply Agile and DevSecOps practices, automated testing, CI/CD, and code reviews. Collaborate with systems and test engineers, support international mission adaptations, evaluate emerging technologies, and mentor junior engineers.

Design, architect, develop, test, and oversee complex software systems for space technologies. Lead engineering teams, make high-level technical decisions, guide large-scale projects, troubleshoot distributed systems, and drive software strategy. Collaborate with technical and non-technical stakeholders, conduct code reviews, document systems, mentor engineers, and evaluate technologies, methodologies, automation, cloud platforms, databases, and secure development practices for classified environments.

As a Senior Software Engineer, you will design and implement EHR integrations, develop API integrations, mentor junior engineers, and build scalable systems for healthcare interoperability.

Design and implement scalable, highly available cloud platform features for Azure Virtual Desktop and Windows 365. Lead architecture, mentor engineers, drive cross-team delivery, improve reliability, observability, test coverage, and operational practices for large-scale microservices.

Design, develop, and scale reliable distributed software systems powering MSN experiences for hundreds of millions of users. Build high-quality, testable code; collaborate with engineers, product managers, and partner teams; translate requirements into technical solutions; participate in code reviews; resolve production issues; and improve system performance, scalability, and reliability. The role also involves designing complex workflows, driving cross-organizational alignment, and leading implementations across Edge, MSN, Windows, and Copilot.

Design, build, and maintain scalable Salesforce Apex solutions supporting Sales and Customer Experience teams. Use AI coding assistants throughout development, apply Salesforce architecture and release-management practices, deploy with sf CLI, and build reliable production systems at scale. Improve deployed features, measure impact, document code, and contribute beyond Salesforce when needed. Translate ambiguous requirements into scalable technical solutions and business value.

Leads software engineering for private cloud and next-generation infrastructure. Provides technical direction, develops and reviews secure production code, solves complex design and functionality problems, and improves SDLC automation through approved AI-assisted engineering practices. Establishes validation, security, testing, and governance standards; supports cloud infrastructure and APIs; influences product and operational decisions; and serves as a subject-matter expert and engineering community advocate.

The Principal Engineer will lead technical direction across multiple teams, design architecture for financial systems, mentor engineers, and drive multi-year transformations in the Money Group.

Lead the technical design and architecture of Gusto's Commerce Platform, mentoring engineers and ensuring service reliability while collaborating across teams.

As a Staff Software Engineer, you'll design, build, and test Gusto's core platform services, mentor engineers, and collaborate with various teams to solve complex engineering problems.

Design, implement, and operate the metadata layer for R2 object storage at global scale. Build production services on Cloudflare Workers and Kubernetes, own schema and query patterns for billions of objects, ensure S3 API compatibility, participate in on-call rotations and incident response, and collaborate across teams while leveraging AI tools to accelerate development and operations.

Develop and implement new features for Crunchyroll's iOS and Apple TV apps while ensuring code quality through reviews and testing.

Build APIs, SDKs, adapters, and integration tools for Fabric, a distributed systems platform supporting autonomous vehicles, command-and-control applications, and partner systems. Design interfaces, schemas, and compatibility patterns; develop backend services; integrate across unreliable networks; and improve testing, deployment, observability, and developer tooling. Collaborate with internal teams and external integrators, troubleshoot integration issues, document solutions, and contribute to platform architecture and roadmap decisions.

Lead the design, development, testing, and delivery of complex software components for Microsoft's Ads SDKs. Improve performance, reliability, scalability, observability, CI/CD, automation, and developer experience. Collaborate with architects and product teams, apply AI-powered tools, use telemetry and experimentation to validate system health, and ensure security, privacy, compliance, and production readiness.

Design, deploy, enhance, and support secure custom government network platforms and cloud services. Manage CI/CD pipelines, build systems, testing frameworks, distributed databases, and storage ecosystems. Lead technical initiatives, code reviews, security patching, Agile SDLC releases, and system performance improvements. Collaborate with Operations, Engineering, and SRE teams to troubleshoot complex issues and deliver resilient application delivery networks.

Designs, develops, integrates, tests, and debugs software for semiconductor test platforms, including SLT, Burn-In, and HPC systems. Builds applications, SDKs, drivers, APIs, messaging services, data pipelines, and equipment-control software. Integrates software with hardware, firmware, instrumentation, and thermal systems; supports secure on-premises services and production deployment. Leads architecture, code reviews, customer integration, and technical mentoring while remaining highly hands-on.

Lead integration of third-party SDKs, APIs, mission systems, payloads, and software into Linux-based autonomous aircraft platforms. Build integration tools, debug issues across networking, hardware interfaces, and distributed systems, and deliver production-ready software. Collaborate across autonomy, avionics, electrical, mechanical, and systems engineering teams. Support field testing and operational integration activities.

Build reliable, secure, and scalable backend software, including automated ETL pipelines across multiple data sources. Design distributed systems, cloud services, data pipelines, and APIs while balancing privacy, security, and reliability. Collaborate with internal users to understand requirements, guide workstreams, mentor junior developers, and support cross-platform, multi-tenant systems on modern cloud-native platforms.