Top Senior Software Engineer Jobs in Jacksonville, FL

Lead company-wide transformation of test automation and quality engineering: define vision and roadmap, architect scalable testing frameworks across server/web/mobile/desktop, integrate AI/LLM for test generation and flakiness management, establish observability and quality gates, mentor engineers, and partner with leadership to embed quality across the SDLC.

Design and deliver complex backend systems and APIs in a Kubernetes environment. Drive architectural initiatives, ensure rigorous testing and reliability, optimize data storage with PostgreSQL/Redis/Elasticsearch, contribute to Kotlin and Rust codebases, mentor engineers, and collaborate with product and stakeholders to address customer pain points.

As a Senior Software Engineer, you'll work on backend systems, engage in engineering challenges, and contribute to software development and deployment.

Resolve customer escalations by analyzing, troubleshooting, and documenting complex issues. Provide status updates, contribute knowledge-base and product documentation, assist teammates with advanced problems, and participate in periodic after-hours pager rotations to ensure timely issue resolution.

Lead iOS development for MyFitnessPal's Premium subscription experience: design and implement features, improve subscription lifecycle via data, ensure testable, secure code, mentor engineers, and collaborate cross-functionally to deliver scalable solutions.

Design and build scalable backend services, APIs (REST/gRPC), cloud-native microservices, and data pipelines. Ensure reliability, observability, security, and collaborate with product and design to deliver production-grade features.

The Senior Software Engineer/Data Engineer will enhance software applications, mentor junior developers, and support clinical solutions through design and coding using various technologies and methodologies.

The Senior Software Platform Engineer will design and maintain cloud-based MLOps pipelines, collaborate with cross-functional teams, and support AI workloads to enhance production capabilities.

Own and enhance a large section of the API platform: lead technical direction, design and build API decisioning products, write automated tests, troubleshoot/resolve production issues, ensure SLAs and participate in on-call rotations, and collaborate with product, security, and engineering teams.

As a Senior Software Engineer, you'll build applications, APIs, and SDKs for AI agent interactions in finance. You will develop core products, enhance payment systems, and support decentralized AI coordination.

Design and implement frontend systems using React and TypeScript, collaborate with product and design teams, mentor engineers, and contribute to backend services in Go.

Develop and deliver production-ready front-end and back-end code, design within service architecture, debug cross-service issues, mentor teammates, and lead process improvements to ensure high-quality, timely software delivery.

Design and build services, APIs, frameworks, and UIs; lead development of user interfaces and features; collaborate with teams on core platforms; contribute to backend services and data models.

The Senior Software Engineer will develop reliable systems for IoT fleet management, create user interfaces, and support data engineering tasks.

Design, build, and own integrations connecting Chainguard products to cloud marketplaces, vulnerability scanners, and observability tools. Develop security advisory systems and APIs, support cloud platform integrations (GCP/AWS/Azure), mentor peers, and drive long-term, scalable architecture and partner onboarding initiatives.

Lead development of complex React applications, maintain reusable component libraries, optimize frontend performance and accessibility, translate Figma designs into responsive UI, collaborate on API design (Node/Python), use analytics to improve user journeys, and champion AI-augmented development workflows.

The Senior Software Engineer will build backend systems, collaborate with customers, drive product features, and enhance AI automation at Acai Travel.

As a Senior Software Engineer, you'll improve our VTK-based rendering pipeline, investigate alternative libraries, and address display bottlenecks.

Design and implement solutions for a scalable AI platform. Troubleshoot technical issues and ensure software quality through testing and architecture improvements.

Responsibilities include modernizing POS and fuel system software, troubleshooting issues, collaborating with team members, and ensuring system reliability in high-transaction environments.

Design and develop software applications for logistics and supply chain operations, collaborating with teams to enhance service offerings and ensure robust functionality.

The Senior Software Engineer will design and maintain Microservices in Go, Python, or Java, build cloud-based products, support testing processes, and lead projects in a fast-paced environment.

Join Vanta as a Senior Software Engineer to lead and mentor teams, driving projects on identity systems and improving security infrastructure.

Lead design, architecture, and hands-on implementation of scalable healthcare SaaS systems. Drive interoperability (HL7, FHIR, EDI), mentor engineers, liaise with stakeholders, manage technical risk, and ensure quality, performance, security, and innovation.

As a Senior Software Engineer, you will develop backend systems for Foodsmart's platform, collaborate with teams, and uphold coding standards.