Top Software Engineer Jobs in Jacksonville, FL

As a Senior Backend Engineer, you will build APIs and integrations, develop fault-tolerant systems, mentor engineers, and ensure code quality.

Design, implement, and optimize core frontend, backend, and model-integration components. Drive engineering direction, ship and scale LLM-powered applications, build robust APIs and streaming systems, establish CI/CD and instrumentation, and deliver production-grade agentic workflows with measurable reliability and performance.

Design and implement backend services in Go for high-throughput AI workloads. Collaborate with teams, optimize system performance, and maintain cloud integrations.

Design, build, and maintain scalable end-to-end systems and APIs/SDKs for an enterprise custody platform. Work full-stack across databases, cloud deployments, CI/CD, and security; troubleshoot issues, integrate emerging technologies, and mentor junior engineers.

Design and deploy smart contracts on blockchain platforms, ensuring security and efficiency. Collaborate on integration within the Fortytwo ecosystem and stay updated on blockchain advancements.

Seeking experienced Senior Backend Engineers to join a collaborative team, focusing on backend systems, shared services, and product features aimed at improving user experiences and monetization.

As Tech Lead for Payments, you'll design and build core systems for Polygon Labs' Open Money Stack, focusing on high-throughput payment services in Go, distributed systems, and collaboration with cross-functional teams while maintaining robust engineering standards.

As a Smart Contract Engineer, you will build and maintain open-source smart contract libraries, manage release lifecycles, and collaborate with a cross-functional team to develop innovative products.

As a Senior 3D Software Engineer, you will develop advanced 3D algorithms while collaborating with cross-functional teams in an agile environment.

Improve and scale Airship's distributed data systems by reading and writing Java code, diagnosing performance and cost issues, implementing architecture and library changes, deploying improvements, responding to reliability incidents, and collaborating with backend engineers.