Top Senior Software Engineer Jobs in Jacksonville, FL

Build and operate the Data Plane Platform: design and implement scalable backend services in Go, REST APIs, and distributed systems; contribute full-stack using React and TypeScript for platform management; develop and run production cloud applications on AWS/GCP; ensure reliability through testing, CI/CD, and observability; troubleshoot across code and infrastructure and drive technical ownership.

The Senior Front-End Engineer will develop and maintain the UI application using React and TypeScript, ensure code quality, debug issues, and collaborate with design teams.

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

Design, build, test, and continuously deploy scalable infrastructure and platform tooling. Create technical specs and rollout plans, collaborate with stakeholders, mentor teammates, support services in production, and shape engineering practices across teams.

Lead architecture and stabilization of a large-scale, multi-tenant CRM SaaS: own reliability, data-sync correctness, and performance; write production code (~40-50%); drive migration toward event-driven microservices; define observability, CI/CD, and AI-assisted development; mentor senior engineers and coordinate cross-team initiatives.

Design, build, and operate CRM SaaS features across Angular, Node.js, and PHP services. Own integrations, data synchronization, and high-throughput workflows. Improve scalability, reliability, observability, CI/CD, and incident response while mentoring teammates and helping modernize the architecture toward event-driven microservices on AWS.

Lead design and delivery of scalable, secure full-stack systems; mentor engineers; integrate AI-driven and agent-based workflows; ensure cloud-native, containerized deployments and secure SDLC practices.

Lead design and implementation of backend services and APIs for payments, billing, settlements, ledgers, and reconciliation. Drive architecture for highly available, auditable financial platforms, integrate with payment processors and banking partners, ensure transactional integrity, observability, and compliance. Deliver end-to-end initiatives, mentor engineers, and operate mission-critical systems with strong emphasis on reliability, security, and scalability.

Lead architecture, delivery, and operation of large distributed telemetry databases. Define technical strategy, SLOs/SLIs, and reliability practices; drive performance, cost, and observability improvements; lead incident response and cross-team projects; mentor engineers; and represent engineering to stakeholders.

Join the Platform SysEng squad to design, build, and operate highly available, low-latency cloud-native infrastructure. Improve platform scalability, performance, and reliability; own SLOs/SLIs, capacity planning, and production operability; collaborate across teams to reduce region build times and ship platform improvements. Work primarily with Go/Python/Shell, Kubernetes, IaC, and observability tools, and participate in on-call rotations.

Develop and maintain performant web applications in Go and Vue.js, design and implement RESTful APIs, optimize SQL queries and schemas, collaborate with product and design, participate in code reviews and testing, and work with cloud providers and CI/CD to improve platform performance and reliability.

Design, build, and maintain CRM+ features using C#, .NET, Vue, and SQL Server on Azure. Architect scalable services, use AI tools (Claude Code) in development, write well-tested code, mentor engineers, influence product and technical strategy, operate CI/CD, troubleshoot production issues, and collaborate cross-functionally.

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.

As a Software Engineer, you will build features, improve the product development cycle, and ensure code quality while collaborating with teams and solving complex problems.

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.