Top Senior Software Engineer Jobs in Jacksonville, FL

Join Terakeet as a Senior Backend Software Engineer to design, build and maintain scalable backend services and APIs using Python, focusing on databases and best coding practices.

The role involves shipping full-stack AI projects, designing experiments for AI features, and optimizing AI infrastructure while collaborating with teams.

As a Principal Mobile Software Engineer, you'll lead mobile platform development, scale React Native architecture, mentor engineers, and collaborate across teams to build impactful features.

The Senior Back-End Software Engineer will maintain and modernize the Rails stack, improve internal tools, reduce third-party dependencies, and ensure infrastructure scalability.

As a Senior Mobile Software Engineer, design and build scalable mobile applications, collaborate with cross-functional teams, and enhance engineering quality.

As a Backend Engineer, you will design and implement core infrastructure for Vannevar's platform, ensuring standards for data processing, security compliance, and performance. You will collaborate with various teams to enhance shared infrastructure and lead technical initiatives.

The Senior Software Engineer will lead technical strategies, build AI-driven software systems, mentor junior engineers, and ensure security best practices.

The Sr. Software Engineer will design, develop, and deliver high-quality software features, monitor performance, conduct code reviews, and support team members in technical problem-solving.

The Staff Software Engineer will lead the design and development of scalable access control solutions for Identity and Access Management. Responsibilities include architecting authorization systems and mentoring engineers, ensuring high-quality, high-scale platform solutions.

Lead backend engineering for high-volume, event-driven pipelines that power institutional reporting, billing, tax outputs and statements. Build and scale services in Go, design cloud-native systems, write well-tested code, and collaborate cross-functionally to deliver product and technical roadmaps that support revenue and trust for large institutional clients.

The Staff Software Engineer will lead technical projects, mentor junior engineers, manage system health, and collaborate across teams while writing high-quality code and documentation.

As a Senior Backend Engineer, you'll develop and enhance authentication strategies, improve access management, and ensure security for GitLab users, focusing on scalable solutions.

As a Senior Software Engineer, you'll develop end-to-end solutions for Smart Trailer and Connected Equipment, focusing on scalability and customer impact. You'll mentor other engineers and collaborate cross-functionally.

As a Senior Software Engineer, you will develop and enhance core software libraries, maintain APIs, lead projects, and mentor junior engineers while collaborating in an Agile environment.

The Senior Software Engineer will build and operate connectivity features for Samsara’s Vehicle Gateway, focusing on end-to-end product delivery across various domains and ensuring device connectivity for IoT solutions.

Design, build and operate Support Technology platforms, manage backend services, develop AI-driven capabilities, and mentor engineers for operational excellence.

As a Principal Software Engineer, you'll architect and code backend services and ML models, integrate them with Salesforce, and mentor junior engineers.

Lead architecture and implementation of a new frontend platform, define org-wide frontend best practices, mentor engineers, collaborate with product/design/backend, operationalize tools and CI/CD, drive cross-team initiatives, and ensure high-performance, maintainable, and accessible frontend systems.

Join MongoDB's Clusters and Integrations team to build core distributed database infrastructure, focusing on networking, observability, and data movement.

As a Python Software Engineer, you'll lead technical projects, develop cloud solutions, enhance operational efficiency through automation, and collaborate cross-functionally.

The Senior Software Engineer will design, build, and maintain services for Cadence's remote patient monitoring platform, collaborating with product owners and internal stakeholders in a fast-paced environment.

Design and build platform services for high-quality staking products. Integrate with internal teams, translate complex staking protocols into simple APIs, participate in code reviews, and troubleshoot/debug complex production issues to support retail and institutional staking offerings.

Lead design, build, and scale real-time streaming infrastructure and data pipelines; collaborate with product and analytics; ensure operational availability and monitoring; set code and design standards; mentor engineers and drive delivery of quarterly goals.

Lead full‑stack projects for Upstart's Auto Refi and Auto Secured Personal Loans products. Collaborate with cross‑functional partners, make architectural decisions, deliver high‑quality, testable, resilient code, and propose ideas to improve product metrics and conversion.

As a Senior Software Engineer at Desmos, you'll develop innovative math tools, lead projects, and collaborate across teams to enhance user experiences.