Top Senior Software Engineer Jobs in Jacksonville, FL

Build and maintain performant, accessible frontend interfaces using modern component architecture and AI-driven features. Integrate REST APIs and LLM services, use agentic development tools, participate in code reviews, contribute to CI/CD with Azure DevOps, monitor frontend performance with Azure App Insights, and collaborate with Product and Design.

The Senior Software Engineer will develop and maintain big data applications, focusing on distributed computing, automation, and collaboration with teams to enhance healthcare solutions.

The Senior Software Engineer II will architect, build, and operate core services for the company's cloud infrastructure. Responsibilities include designing scalable platform services, leading operational design for reliability, building automation for self-healing systems, and collaborating across engineering and security teams.

Develop core backend components for a blockchain network, focusing on reliability and scalability, mainly using Rust. Ensure code quality through testing and debugging.

Lead the redesign of Mozilla's IAM system, focusing on user experience and scalability while guiding technical decisions and promoting best practices.

Lead the redesign of the IAM system at Mozilla, focusing on scalability and user experience while promoting best engineering practices and collaboration across teams.

Design, build, and deploy scalable cloud-based solutions; translate product requirements into technical architecture; contribute to roadmaps, code, and reviews; shape engineering practices and culture in a fast-paced startup.

The role requires aSenior Software Engineer to develop and manage product features, including backend systems and APIs predominantly using Python and SQL, and contribute to frontend development when necessary.

Design, build, and scale backend systems for a publishing platform. Lead development, ensure system health, and promote engineering standards.

The Senior Software Engineer will develop features for Phantom's web platforms, lead new product initiatives, interface with users, and contribute to team culture.

As a Senior Software Engineer, you'll design modern scalable platforms, focusing on front-end and back-end development using VueJS/ReactJS and C# microservices, while integrating with AWS and modern data warehouses.

The Senior Software Engineer will build and operate systems for Vanta's FedRAMP environments, focusing on reliability, compliance, and incident response, while collaborating with product teams and improving operational readiness.

As a Senior Software Engineer, you will develop solutions for improving support agent experience, focus on backend components, and collaborate with cross-functional teams.

Design, build, and maintain scalable cloud infrastructure and CI/CD pipelines using Pulumi (or Terraform). Automate deployments, improve observability, optimize cloud costs, enhance security and developer experience, and collaborate with engineering teams and the open-source community.

As a Senior Software Engineer, you will develop scalable applications, collaborate with teams, and improve code quality while maintaining backend system reliability.

Lead development of Dutchie’s cross-platform mobile apps using Flutter, delivering customer-facing features from design through deployment. Optimize performance, accessibility, and cross-platform consistency, collaborate with product and design, improve code quality and developer experience, and act as a technical leader on the mobile team.

Lead front-end development for the Brands team: design and implement React/TypeScript UIs, ensure comprehensive testing and monitoring, collaborate on product definition, and iterate from customer feedback. Mentor peers and improve team processes.

Lead design, build, and maintain CRM and MarTech integrations and services; lead technical discovery and execution; mentor engineers; collaborate with marketing and cross-functional teams; ensure system stability and participate in on-call rotations.

Develop new features, fix bugs, refactor codebase in a TypeScript/React environment, collaborate with teams to meet user needs, and contribute to team culture.

Design and build backend functionalities for Temporal's high-availability services, ensuring reliability and scalability across cloud environments. Document processes and maintain service metrics.

As a Staff Software Engineer, you will architect and scale AI/MCP Server and Gateway for multi-agent workflows, ensuring reliability and performance while collaborating with cross-functional teams.

Design and deliver features for the Ready-to-Build product, collaborate with sales and implementation teams, maintain and test code, enhance platform functionality.

As a Senior Software Engineer, you will design and develop high-quality payment systems, improve client transaction processing, mentor engineers, and ensure security and compliance in financial software.

Design and build infrastructure for AI agent systems, focusing on high-performance Rust services and reliable ML infrastructure for large-scale production environments.

As a Staff Software Engineer in Growth, you'll lead technical projects aimed at user acquisition and retention, mentoring engineers and ensuring scalability and reliability of systems.