Top Senior Software Engineer Jobs

Design, develop, test, deploy, monitor, and support full-stack applications for sales execution workflows. Build React-based web experiences, Salesforce solutions, backend services, REST APIs, database integrations, and enterprise data flows. Troubleshoot cross-platform issues, implement automated testing and CI/CD, participate in architecture and code reviews, modernize legacy systems, and collaborate with product, architecture, data, QA, and security teams.

Build and operate infrastructure for evaluating coding agents and language models. Own end-to-end features across data models, APIs, background workers, and user interfaces; run sandboxed agent trials; develop scoring and task-quality systems; integrate models and benchmarks; optimize performance, concurrency, migrations, and reliability; and review code. The role requires independent ownership of production backend systems and hands-on LLM evaluation experience.

Own Picarro’s Android and iOS mobile experience, building field-facing apps that pair with physical instruments and connect to cloud platforms. Design offline-first synchronization, Bluetooth and sensor integrations, background data collection, and reliable production systems for challenging field conditions. Partner with backend engineers on APIs, monitor app performance and reliability, resolve production issues, use AI-assisted development tools, and mentor engineers on mobile architecture and best practices.

Build and evolve shared Ruby backend frameworks supporting REST APIs, asynchronous jobs, workflow orchestration, and data access. Improve system reliability, scalability, performance, observability, and developer productivity across a large codebase. Modernize Sinatra services toward Rails, strengthen testing and CI, and create reusable platform capabilities. Partner with product and infrastructure engineers, provide technical guidance, and mentor teammates.

Senior Software Engineer supporting Air Force electronic systems across the DoD acquisition lifecycle. Responsibilities include software and system design, requirements development and traceability, integration, technical analysis, documentation, milestone reviews, risk mitigation, and sustainment. The role requires Python, Agile SAFe 6.0, engineering tools, AWS familiarity, active Secret clearance, and significant defense-program experience. This is a hybrid position at Hanscom Air Force Base with 20% travel and is contingent upon contract award.

Leads end-to-end software development for Walmart Ads’ Unified Recommendations Platform, including system design, coding, testing, deployment, monitoring, and maintenance. Builds scalable cloud-native distributed systems, integrates AI/ML capabilities, conducts design reviews, and drives technical execution. Mentors engineers, collaborates with stakeholders, defines success metrics, and improves engineering processes, tooling, and products.

Design, develop, integrate, and test full-stack software across the full development lifecycle. Build web applications, microservices, and cloud-based solutions using modern front-end and back-end technologies. Collaborate with engineers, designers, customers, and Agile teams to solve complex technical challenges, demonstrate capabilities, and deliver high-quality software on schedule. The role requires active Top Secret clearance and may involve 10% travel.

Design, develop, integrate, test, and maintain complex software systems for cyber and intelligence missions. Analyze requirements, system performance, data flows, and operational issues; develop algorithms and database interfaces; lead software development activities; improve documentation and processes; and coordinate software installation and system functionality. The role requires extensive software engineering experience, an active U.S. security clearance with polygraph, and expertise in C++, Python, or Kubernetes.

Design, build, deploy, and operate cloud infrastructure and scalable I/O systems for scientific computing, physics simulations, AI workflows, and data-intensive workloads. Optimize compute, storage, and network architectures across CPU and GPU environments. Develop algorithms, debug systems and third-party code, and improve performance across distributed systems, operating systems, kernels, compilers, and parallel-processing frameworks while collaborating independently across teams.

Designs and maintains relational databases and web interfaces for aerospace Thermal and Loads data. Integrates databases with Python codebases, processes simulation and experimental data, and produces customer reports and visualizations. Collaborates with engineering teams to ensure data integrity, usability, and accessibility while improving architectures, workflows, and documentation. The role also plans, develops, tests, debugs, and documents mission-critical software according to established standards.

Develop and maintain software requirements, architecture, algorithms, interfaces, APIs, backend services, and user interfaces for SATCOM mission-planning systems. Work throughout the Agile and DevSecOps lifecycle, including design, coding, integration, testing, deployment, code reviews, automation, security, and performance improvements. Support CI/CD pipelines, Kubernetes optimization, databases, geospatial visualization, and software for space systems and ground segments.

Provides technical oversight for mission-system software solutions, interpreting and allocating requirements, designing architectures and functional specifications, and supporting implementation and maintenance. Develops web applications and backend services using modern JavaScript frameworks, Python, APIs, and relational or non-relational databases. Supports enterprise systems for cyber investigations across Windows and Linux environments, using Elastic Stack, Kubernetes, Ansible, GitLab, and related technologies.

Leads the design, development, and delivery of scalable software services and data pipelines for audience data. Owns ingestion from source onboarding through production, including validation, transformation, deduplication, publication, and service-level performance. Applies cloud engineering, CI/CD, infrastructure-as-code, Snowflake, and distributed data technologies. Establishes testing and engineering standards, contributes to architecture and platform decisions, troubleshoots complex issues, and mentors junior and mid-level engineers.

Designs, develops, documents, tests, debugs, and maintains software in a DevSecOps environment. Applies full software development lifecycle practices, Java programming, object-oriented design, build tools, unit testing, web technologies, and software development standards. Collaborates on mission-focused Maintenance Systems applications, resolves program issues, prepares documentation, and supports software architecture and testing activities.

Design, build, and maintain scalable cloud services and APIs supporting partner onboarding, account enrollment, identity, authorization, security, and Partner Center capabilities. Develop secure, reliable distributed systems using cloud-native architectures, improve service availability and observability, and contribute to AI-enabled experiences and engineering automation.

Leads systems software prototyping and workload characterization for Azure hardware/software co-design. The role optimizes AI inference and LLM workloads, especially KV Cache placement, migration, and utilization across GPUs, CPUs, CXL memory, storage, and networks. Responsibilities include developing inference framework extensions, instrumentation, performance models, simulation frameworks, and memory-tiering proof-of-concepts while influencing long-term architecture and collaborating with hardware, software, workload, and industry partners.

Build, test, deploy, and operate production-grade AI-powered applications, agents, services, integrations, and workflows. Translate business requirements into scalable technical solutions, use AI-assisted development tools, and apply software engineering practices including testing, CI/CD, observability, documentation, and code reviews. Develop reusable engineering components while addressing security, privacy, compliance, reliability, and Responsible AI requirements.

Own and deliver backend initiatives end-to-end for a recruiting application, build agentic AI capabilities, collaborate with a small team, and use AI coding tools daily to scope, ship, and maintain production features.

Lead architecture and development of backend services, APIs, integrations, and internal tools supporting supply planning, inventory, orders, fulfillment, logistics, and membership operations. Set technical direction, deliver complex initiatives, improve system security and resilience, partner cross-functionally, and mentor engineers. The role requires designing scalable distributed systems, integrating enterprise platforms and cloud services, managing data consistency and recovery, and translating ambiguous business needs into reliable technical solutions.

Design and build healthcare messaging solutions using C# .NET, RESTful APIs, Azure, and DaVinci FHIR. Develop web services, map healthcare message structures, write unit and integration tests, review code, troubleshoot production issues, and deploy software to Azure. Collaborate across teams, mentor junior engineers, manage complex projects, and improve prior authorization workflows.

Build and operate production identity-platform features end to end, including data models, APIs, user interfaces, architecture, and deployment. Engineers independently make technical tradeoffs, collaborate with customers, design, and product, and maintain high standards for code quality, reliability, and system design. The role favors adaptable generalists, with opportunities for specialists in identity, security, distributed systems, connectors, performance, or large-scale data systems.

Maintain, troubleshoot, test, and enhance legacy RSCCE graphical operator interfaces and front-end applications using SL-GMS, DECwindows Motif, Fortran 77, DEC VAX, and OpenVMS. Translate operator requirements into software changes, resolve defects, develop automated test tools, support modernization efforts, and prepare technical and deployment documentation. The role is performed onsite in a secure government lab and supports satellite communications systems.

Develop and deliver CUDA driver features across pre-silicon simulation, silicon bring-up, and production software. Collaborate with hardware and software teams to design, implement, test, and stabilize GPU compute and graphics functionality across multiple operating systems.

Own and define Dubsado’s data infrastructure strategy, including pipelines, warehouse reliability, analytical modeling, data quality, observability, and tooling standards. Build scalable data systems, collaborate with engineering, product, and business teams, and support AI agents, customer-facing features, and internal users. Serve as the initial dedicated data specialist, operating autonomously while gradually distributing data quality ownership across engineering.

Develop and enhance OneStream business rules, dashboards, workflows, cube views, integrations, and extensibility solutions for corporate finance. Lead technical design and planning, collaborate with Finance and technology stakeholders, participate in code reviews, improve development and deployment processes, document complex applications, and troubleshoot production issues. The role supports financial consolidation, planning, and analysis applications while ensuring compliance with software architecture and engineering standards.