Top Senior Software Engineer Jobs

Maintain and sustain legacy enterprise applications: troubleshoot and fix bugs, enhance features, upgrade systems for security, develop and test interfaces and modules, lead design/code reviews, advise clients on modernization, and operate within Agile teams using scripting, microservices, cloud, and source control.

Lead design and delivery of large-scale full-stack features across frontend and backend. Architect scalable cloud services, write well-tested code, mentor engineers, collaborate with Product and Design, and drive CI/CD and DevOps practices from concept to production.

Senior backend engineer responsible for system design, development, testing, and operational support of scalable, Kafka-driven post-trade applications. Must have deep Core Java (multithreading, concurrency, data structures), Spring Boot expertise, experience with event streaming, relational databases, distributed caching, DevOps toolsets, and Kubernetes. Capital markets/post-trade domain knowledge required.

Embed with U.S. government customers to design, build, deploy, and maintain mission software from prototype to production. Own end-to-end delivery, build backend systems and data integrations, collaborate with product and engineering to scale reusable capabilities, and serve as the technical point of contact to drive adoption and mission impact.

Lead design and implementation of graph database solutions using Neo4j. Provide technical and architecture leadership across the Graph DB lifecycle, data modeling, RDBMS integration, and design solutions. Mentor teams and drive project delivery; knowledge of NoSQL (MongoDB, Cassandra) is a plus.

Senior-level Network/Software Engineer role. Job description provides minimal details; expects an experienced engineer but specific responsibilities, tech stack, and deliverables are not listed.

Design, build, and maintain mobile, web, and backend systems; own technical design and reviews; troubleshoot complex issues; mentor engineers; align technical direction and improve team practices to deliver reliable, scalable solutions.

Develop Java-based REST services and APIs for the Low/No Connectivity project. Implement service endpoints, write unit tests, fix defects and enhancements, participate in design/code reviews and Agile team ceremonies, and mentor junior engineers.

Work on an agile team to design and implement an iOS SDK for third-party developers. Develop interfaces, write unit tests, and collaborate with a tech lead, testers, and team members to deliver production-quality SDK components.

Develop device/primitive and middleware software for currency handling devices; provide pre/post-sales technical support, training, diagnostic and maintenance tools; support OEM integration; travel up to 20%; follow ISO and company quality policies.

Develop and maintain C#/.NET applications within a multi-service, cross-language project. Implement functionality from high-level use cases, write unit tests (including Windows services), perform C#/C++ interop and marshalling, debug on Windows, and adapt to new technologies. Contract role based in Hillsboro, OR.

Implement and enhance Android applications for wearable devices: translate product requirements, design and maintain mobile architecture, add customer-specific features, optimize security, performance and scalability, participate in code reviews, collaborate across teams, and support testing and deployment.

Develop and maintain complex desktop UI applications using WPF and/or Silverlight. Lead GUI/UX design, implement .NET/C# application architecture, integrate with databases via ADO.Net/ODBC/Oracle SQL, and implement WCF services. Support reporting frameworks (Sharpshooter, Telerik, SSRS) and contribute to debugging and Visual Studio-based development.

Design, build, and maintain software systems (data platforms, real-time analytics). Collaborate with stakeholders to deliver features, write/test/debug code, implement algorithms, create documentation, and ensure software quality and performance.

Design, build, and optimize full-stack software solutions integrating data ingestion, transformation, storage, APIs, microservices, and front-end visualizations. Ensure performance, reliability, security, and compliance with government standards while leading architecture, troubleshooting integrations, and collaborating in Agile teams on classified programs.

As a Senior Software Engineer, you'll build high-performing, scalable applications for Joyride's auction platform, working on new features and existing code.

The candidate will support the software development life cycle for autonomous vehicles, build tools for development teams, and collaborate with hardware engineers.

Develop and sustain mission-operational software product lines and new capabilities across multiple subsystems. Write advanced object-oriented C++ code on Red Hat Enterprise Linux, participate on Agile teams, use DevSecOps and test automation practices, and collaborate with stakeholders to solve complex national-security engineering problems. Position requires travel for training and maintenance of required security clearances.

Design, integrate, and enhance vehicle software deployment infrastructure and developer tools. Improve deployment speed, reliability, and diagnostics. Triage and resolve complex hardware/software deployment failures and collaborate with Firmware, QA, Systems, Manufacturing, and Fleet Operations.

Design and develop software solutions for manufacturing clients (SCADA to MES/MOM). Work in small multidisciplinary teams, support project commissioning onsite, hybrid Smyrna TN role with up to 10% travel. Mentor engineers and apply industrial automation and integration best practices.

Design, build, and maintain scalable, high-performance web applications using React, Node.js, and AWS. Collaborate with cross-functional teams on architecture, implement backend microservices, apply containerization and orchestration, enforce best practices, and solve complex problems. Mentor team members and participate in special projects.

Develop and maintain the Account Services application through full software development lifecycle. Work with stakeholders to gather requirements, write design documents, implement Java-based features, participate in code reviews, and collaborate with product and QA teams to deliver high-quality enterprise software.

Senior individual contributor who designs and operates cross-system provider and partner platforms. Drives end-to-end workstreams, mentors peers, shapes product direction, and builds shared tools. Ensures reliability and compliance (HIPAA/PCI-DSS/SOC 2) while using AI-native approaches to scale impact.

Design, build, and maintain high-performance React/TypeScript web applications and reusable UI libraries. Integrate AI/LLM-powered agents and workflows, write tests, participate in code reviews, mentor developers, and collaborate with product, research, and data teams to deliver scalable, secure front-end solutions.

Develop and validate system-level software for engine and power-electronics products. Define software requirements and architecture, lead cross-functional teams, perform modeling, design, SIL/HIL testing, verification/validation, and ensure regulatory and functional safety compliance while interfacing with hardware engineers, suppliers, and customers.