Top Software Engineer Jobs in Jacksonville, FL

Design, build, and optimize scalable backend services in Golang. Collaborate with frontend and DevOps teams, implement TDD, work with PostgreSQL and MongoDB, ensure high availability and security in cloud environments, and participate in the full software development lifecycle.

Build and maintain Plane's local-first browser client surfaces: large, virtualized workspaces, collaborative editor, offline/caching layers, and shared design-system components. Work cross-functionally with designers and backend engineers, extend sync and conflict-resolution behavior, optimize rendering performance, and triage cross-browser and self-hosted issues.

Build and own backend surfaces for Plane: APIs, data models, migrations, real-time sync (CDC/event streams), caching, and query performance. Instrument, monitor, and debug production incidents; collaborate with product and frontend teams across locations.

Own and build Node.js/TypeScript backend services that power integrations, importers, queues, and developer-facing OAuth surfaces. Design reliable queue/worker systems (retries, idempotency, backpressure), integrate third-party APIs, collaborate with Django engineers, and repair partial failures to ensure safe, auditable data migrations and integrations.

Provide expert-level technical support for web and mobile products, debug high-performance RESTful services, triage incidents, coordinate cross-team incident response, collaborate with Client Success, Engineering, Product, and DevOps to resolve complex issues and improve product reliability.

12-week hands-on internship building full-stack features: frontend with React and TypeScript; backend services and REST APIs in Python (FastAPI); enterprise data integrations and ingestion pipelines; write tests, participate in Agile processes, code reviews, and troubleshoot production issues while learning AI and cloud technologies.

Design, build, test, and deploy production-ready web applications using React and Node. Create backend APIs and database schemas, deploy to AWS, ensure software quality, and collaborate within an Agile team.

Develop and deploy production-ready fullstack web applications. Build responsive React frontends, Node.js backend APIs, and supporting database schemas. Participate in Agile team activities, ensure code quality through testing, and deploy applications to AWS.

Design, implement, and maintain scalable, fault-tolerant backend services for real-time data synchronization and streaming. Optimize latency, throughput, and reliability, guide multi-region and disaster-recovery architecture, own projects from concept to production, and improve observability, automation, and incident response.

Lead end-to-end delivery of full-stack product and platform initiatives. Design and implement scalable frontend and backend systems, own production reliability and incidents, introduce pragmatic engineering practices, mentor engineers, and drive architecture and tooling decisions to balance speed and long-term maintainability.

Senior Full Stack Engineer building scalable, high-performance web applications. Own feature design through delivery, write clean reusable code, optimize databases, work with CI/CD, containers, cloud, distributed systems, mentor teammates, and maintain zero customer-reported bugs.

Collaborate with a distributed team to develop, maintain, and modernize the Landscape management software for Ubuntu, focusing on quality code and automated testing.

Design, develop, and maintain manufacturing and production test software for programming, calibrating, and verifying products. Integrate with embedded systems and test instruments, implement automated test sequences and traceability, investigate failures, and improve throughput, quality, and yield across factory programming stations and production fixtures.

Develop and maintain Java applications for DoD systems, focusing on backend services, REST APIs, and microservices, while ensuring security and performance.

Develop and maintain scalable investment portfolio management systems. Collaborate with cross-functional teams to ensure system correctness and client trust, focusing on complex domain logic.

The Senior SRE Engineer will design, build, and maintain resilient infrastructure systems, manage infrastructure-as-code, and write tooling in various languages.

As a Full Stack Software Engineer at Reacher, you'll own product features end-to-end, design scalable systems, mentor engineers, and lead architectural decisions in an AI-driven environment, focusing on both backend and frontend development.

Reacher seeks a Full Stack Software Engineer to lead product features, design scalable backend systems, mentor engineers in AI-native workflows, and enhance user experiences across the tech stack.

Build, maintain, and operate cloud-based services and automation for satellite operations. Manage infrastructure, design/deploy critical systems, support microservices and CI/CD workflows, ensure reliability and SLAs, collaborate with cross-functional teams to minimize operational burden and automate satellite operations.

The Full Stack Software Engineer will develop, innovate, and maintain features for a SaaS platform using technologies like React and Python, contributing to a collaborative team to enhance product performance.

The Software Engineer II will build product features for financial services, focusing on user-facing features, backend services, and collaborating with the product team in a remote environment.

The Software Engineer will manage edge networking configuration, evolve the ingress layer, build network observability, and support regional expansion while defining technical standards for the team.

The Software Engineer will manage edge networking configuration, evolve the ingress layer, build network observability, support regional expansion, and establish team practices in a growing network-focused team.

Build and maintain full-stack features for Cengage Learning Platforms using Java/Spring backends and React frontends. Integrate AI/LLM services, design APIs, improve platform architecture, troubleshoot cross-stack issues, write testable code, and collaborate with product, UX, and QA on accessible, high-quality learning experiences.

As a Senior Full-Stack Engineer, you will design and deploy solutions for state governments, ensuring high standards of security and privacy while leading cross-functional teams.