Top Senior Software Engineer Jobs in Jacksonville, FL

As a Senior Software Engineer, you will lead the architecture and delivery of high-quality production code, improve software efficiency with AI tools, and ensure system reliability through integrations and monitoring frameworks.

Design, develop, and maintain scalable software solutions. Collaborate with teams to troubleshoot issues and enhance the software delivery lifecycle. Focus on backend services, using Java and various tools for performance optimization.

Design, develop, and maintain DPU firmware, optimizing PCIe communication, managing device queues, and collaborating across teams to enhance performance and solve complex issues.

As a Senior SDET, you will design and maintain test automation frameworks, embed with product teams to ensure quality, and implement AI-powered testing solutions.

The Senior Software Engineer will develop scalable systems for cash delivery, improve developer workflows, and collaborate with teams to enhance program delivery.

As a Senior Software Engineer at Cribl, you will contribute to building and delivering improved cloud services, solve infrastructure issues, implement product roadmaps, and ensure software quality and reliability. You will work autonomously within a distributed team and engage with product development, focusing on creating scalable and reliable infrastructure solutions.

As a Staff Engineer, you will manage and evolve shared multi-cloud database infrastructure, work with streaming systems, lead initiatives, and ensure observability and performance.

Design, build, and deploy scalable contracts management features using Python and AWS. Collaborate with teams to implement backend services and maintain a growing React project.

The Senior Software Engineer will lead the design and development of core capabilities for SingleStore's data platform, focusing on high-performance systems and mentoring other engineers. This includes solving system-level problems and implementing scalable solutions in a collaborative environment.

As a Staff Engineer, you will design, build, and maintain backend functionality for scalable services, focusing on storage systems and reliability.

Build and maintain full-stack features for a React/TypeScript frontend and NestJS/TypeScript backend, integrate LLM-powered conversational agents, design APIs, auth (SSO/SAML), real-time updates, background processing (AWS SQS), database schemas (PostgreSQL/Sequelize), API docs (Swagger), and tests (Jest/pytest). Collaborate on architecture, code review, and production support.

Senior backend-focused engineer to provide technical leadership across backend, APIs, and data pipelines. Collaborate with product, design, and stakeholders, author documentation, and drive engineering best practices on a distributed remote team building scalable energy software.

Build and support TimescaleDB Enterprise on‑prem deployment and management platform. Develop frontend tooling (React/TypeScript), backend services (Go), deployment automation (Ansible), and operational PostgreSQL tooling. Write tests across unit to end-to-end, collaborate with cross-functional teams, translate operational requirements into pragmatic product solutions, and iterate on reliability and usability.

Design and build full‑stack systems solving complex, regulated business problems. Own features end‑to‑end, collaborate with product and operations, incorporate AI agents, ensure quality, scale, and measurable outcomes, and engage directly with users and stakeholders.

Lead the design and development of native Windows desktop applications, ensuring best practices, accessibility, and a user-centric approach. Collaborate with teams and manage the full feature lifecycle from conception to maintenance.

Design, implement, and maintain complex, scalable features and services for an enterprise CPM platform. Lead technical design, own end-to-end delivery, mentor engineers, run code reviews, ensure API/JSON/XML contract quality, optimize performance, and improve CI/CD and engineering practices. Support production reliability and use AI-assisted development tools responsibly.

Design, build, and operate large-scale, highly available distributed file storage services on Oracle Cloud. Lead architecture and development, troubleshoot and optimize performance, collaborate with product management, and establish operational best practices.

Design, develop, test, and maintain cloud-native, scalable search and distributed system features. Contribute to architecture, ensure reliability, scalability, and security of global cloud infrastructure. Troubleshoot production issues, optimize performance, collaborate with product and UX, and mentor junior engineers.

Build and maintain full-stack features for Marine and RV & Camping platforms, use AI-assisted tools responsibly, collaborate across teams, reduce technical debt, troubleshoot issues, mentor engineers, and write automated tests to ensure production reliability.

Design and build monitoring, telemetry, and data pipelines to operate flagship supercomputers at scale. Diagnose and troubleshoot GPU hardware, networking, datacenter and software stack issues, implement systemic mitigations, improve observability, and drive reliability and performance improvements through incident reviews and tooling.

Lead architecture and roadmap for Azure PostgreSQL systems; design and review scalable, maintainable database engine features (query processing, storage, transaction logging, recovery, versioning, IO, scale-out). Influence coding standards and run code reviews, write proof-of-concept or production code, contribute to open-source PostgreSQL/Linux, and participate in rotational on-call operations.

Lead technical direction for the Growth team at Sanity.io, focusing on scalable solutions, mentoring engineers, and making data-informed architectural decisions.

As a Senior Software Engineer at SmithRx, you will design, develop, and maintain back-end architecture for our product suite using various programming languages, collaborate with stakeholders, ensure high-quality software, and mentor junior team members.

Own and modernize iHerb's product catalog across backend, React frontend, and relational data. Build end-to-end features, use AI-driven SDLC tools, write automated tests, ensure observability, participate in on-call incident response, and contribute to shared engineering standards.

The Senior Software Engineer II will design and build backend features, evolve AI-native workflows, and enhance the payment infrastructure while collaborating closely with product teams to deliver high-quality solutions.