Top Senior Software Engineer Jobs in Jacksonville, FL

Senior full‑stack engineer focused primarily on frontend architecture and implementation using Vue/React with TypeScript. Contribute to Go and PHP microservices, design/consume RESTful and gRPC APIs, optimize relational databases, drive CI/CD with GitLab CI, mentor engineers, enforce frontend standards, integrate enterprise systems, and improve observability and operational tooling for customer and internal platforms.

Design, build, and deploy cloud-native, API-first mortgage servicing components using Java/Node.js and React. Collaborate with global teams to implement distributed, event-driven systems (Kafka), ensure performance, observability, CI/CD, and adherence to API standards and testing practices.

Design and implement cloud solutions for clients, leading teams, solving technical challenges, and utilizing modern technologies like Kubernetes and AI.

Lead design and delivery of cloud-native .NET services for a high-throughput trading platform. Own end-to-end systems, drive architecture and reliability, mentor engineers, participate in on-call and incident response, and occasionally contribute to React/TypeScript frontend work while establishing engineering standards and observability.

Lead a systems infrastructure engineering team managing Linux (RHEL/CentOS) and Windows servers, VMware vSphere, automation (PowerShell, Python, Ansible), enforce cybersecurity compliance (SCAP/STIG/Nessus), maintain configuration management (Team Center Enterprise), follow Agile processes, and travel ~25%. Requires active Secret clearance.

Lead full lifecycle development of high-volume enterprise web applications using C#/.NET and AngularJS. Contribute to architecture and design, develop and test scalable solutions, troubleshoot production issues, mentor developers, and collaborate with analysts and business stakeholders in an Agile/Scrum environment.

Build performant, well-tested, responsive frontend UIs in collaboration with product and design. Translate Cloud Custodian concepts into user-friendly interfaces, lead frontend initiatives, mentor engineers, and work on a distributed Agile/DevOps team.

Design, build, and operate scalable backend services (primarily Python/Flask). Own projects end-to-end, identify high-impact opportunities, collaborate across remote teams, ensure reliability with testing, monitoring, and DevOps practices, and iterate based on product/customer feedback.

Senior full-stack engineer building scalable, cloud-native .NET Core applications. Own and enhance core systems, lead architecture and testing discussions, collaborate with cross-functional teams, work on frontend frameworks (React/Node), telemetry, performance tuning, and cloud deployments (Kubernetes/AWS).

Build and maintain scalable, cloud-native APIs using .NET. Enhance core platform components, lead architecture and testing discussions, optimize telemetry and performance, collaborate cross-functionally, conduct code reviews, and mentor team members.

Design and implement next-generation networking infrastructure for large-scale AI training on Azure. Lead architecture, write secure high-performance code, create test strategies, perform and coach code reviews, integrate AI tools in the SDLC, and collaborate cross-team to ensure scalability, reliability, observability, and security for distributed HPC/AI systems.

Lead architecture and implementation of large-scale, elastic Pub/Sub and messaging services. Define scalable, reliable designs, mentor engineers, drive CI/CD and testing strategies, manage incidents, partner with PMs/EMs, and advance AI tooling across the SDLC to enable real-time analytics and integrations.

Design, develop, and implement scalable, maintainable software components and applications. Collaborate in Agile teams, perform code and design reviews, and integrate quality, scalability, and observability into distributed service-based systems to meet business goals.

Build and scale backend systems for a high-traffic donor CRM and payments platform. Own performant SQL and realtime querying, optimize payment flows, implement AI agents, and collaborate across product and design to ship resilient, production-grade features at scale.

Lead architecture and build scalable, secure production services while championing AI-native development. Mentor engineers, influence technical direction, review PRs, and help evolve a legacy monolith to a modern stack in partnership with product and exec leadership.

Design and build scalable web applications, collaborate on product direction, and implement complex systems using ML techniques, ensuring software quality.

As a Staff Software Engineer, you'll enhance Airbnb's build infrastructure, optimize performance, and mentor engineers to improve software development processes.

As a Senior Software Engineer at NexHealth, you'll build scalable back-end systems, maintain integrations with EHRs, and manage cross-functional engineering projects to support the company's growth.

As a Distributed Systems Engineer, you'll design and evolve LiveKit's core systems, implement resilient architectures, and enhance reliability and developer velocity, working on critical features in production environments.

The Senior Software Engineer will lead projects, architect solutions, mentor junior staff, and work full stack on platform development.

The Staff Software Engineer will lead technical projects, develop full-stack software, mentor teams, and drive product direction at Propel, focusing on impactful solutions.

Design, develop, and maintain software in a Java environment. Collaborate with cross-functional teams, troubleshoot complex issues, and optimize performance.

Design, implement, test, and maintain full‑stack features and services for the Cayuse Research Platform. Drive architecture, prototypes, and technical debt reduction while practicing TDD, expanding automated QA, collaborating cross‑functionally, and ensuring high quality delivery in an Agile environment.

Lead design, development, and implementation of complex software systems for life & annuity policy administration. Provide technical leadership, mentor engineers, architect scalable mainframe solutions, troubleshoot critical issues, and collaborate with stakeholders to meet performance, reliability, and security goals.

As a Senior Software Engineer, you will design and build backend services for Postgres integration with ClickHouse, ensuring operational excellence and contributing to automation and tooling for database management.