Top Senior Software Engineer Jobs in Jacksonville, FL

Develop and maintain a digital ordering platform for medical equipment. Lead technical decisions, deliver quality code, and ensure system reliability while collaborating in an agile environment.

Build and improve the end-to-end experience for new customers by implementing features across Python services, a GraphQL gateway, Auth0-based auth, and Terraform-managed GCP infrastructure. Collaborate cross-functionally to redesign discovery, evaluation, onboarding, and time-to-value while ensuring reliability, testing, and stable deployments.

As a Senior Software Engineer at Flex, you'll design and maintain financial services architecture, mentor junior engineers, and ensure scalability and security for innovative financial products.

The role involves developing and integrating AI features into Cribl's products, collaborating with teams, and maintaining operational efficiency.

Design, build, and operate full‑stack features and platforms for Horizon. Work across frontend, backend, infrastructure, data, and developer tooling; formulate solutions, ship production code, improve reliability and developer productivity, and expand AI/agent-assisted workflows. Collaborate with product, customers, and cross-functional teams, review code (including agent-generated), and improve internal tooling, observability, and deployment workflows.

As a Staff Software Engineer, you'll develop and maintain core platform infrastructure, design scalable systems, mentor junior engineers, and ensure reliability of product features.

Senior full‑stack engineer responsible for designing, building, testing, and supporting scalable backend services and user-facing UIs for a healthcare data platform. Works across Agile teams on data ingestion/transformation, APIs, cloud infrastructure, containers, and CI/CD. Leads major initiatives, mentors team members, participates in on-call rotation, and ensures HIPAA/compliance and engineering best practices.

Work with customers and cross-functional teams to design, build, and deliver cloud-based solutions. Develop, optimize, debug, and refactor code; produce design docs; act as DRI and on-call responder; improve system reliability, observability, and performance; contribute to open-source and collaborate with Microsoft product teams.

Lead design and implementation of scalable cloud services: define architecture, write and review maintainable code, build automated tests, and ensure reliability. Collaborate with stakeholders, drive deployments, monitor live services (on-call/DRI), and iterate using telemetry. Mentor engineers and promote engineering excellence, security, and compliance.

Design, build, and maintain shared backend platform services (C#/.NET, Node/TypeScript, Postgres/Redis, AWS). Improve reliability, performance, observability, and CI/CD for high-throughput, transaction-heavy workflows. Collaborate with product, payments, data, and infra teams, drive architecture and rollout, mentor engineers, and adopt AI-assisted development practices.

The Senior Software Engineer designs and develops complex features within OneStream solutions, ensuring technical excellence and mentoring other engineers. Responsibilities include architectural design, UI development, API creation, performance improvements, and collaboration across teams.

Lead design, implementation, and maintenance of scalable backend systems and services. Improve performance, reliability, and deployments; operate production systems (incident response rotation); conduct code reviews; mentor engineers; collaborate with product, sales, and customers.

As a Staff Software Engineer, you'll enhance the release and configuration systems across environments, optimize release pipelines, and provide tooling for reliable deployment, ensuring consistency and scalability while collaborating with various engineering teams.

Design, build, and enhance Cority's software platform across product streams. Own features end-to-end, debug cross-system issues, drive observability, contribute technical direction, perform code reviews, mentor junior engineers, and collaborate with Product Owners to translate requirements into scalable technical designs.

Design, build, and operate Planet's scalable object and metadata storage platform. Own backend services, Elasticsearch indexing, search, event notification, and disaster recovery. Measure performance, create alerts, be on call, drive system design and architecture, mentor engineers, and contribute to the technical roadmap for highly available, cloud-native data infrastructure.

The Senior Software Engineer will develop software and implement solutions, mentor engineers, and improve engineering processes at a remote startup.

The Staff Software Engineer will develop software solutions, mentor non-staff engineers, and enhance engineering processes while delivering high-quality products.

Own and deliver reliable, secure software in a regulated healthcare environment. Drive solutions from ambiguity to production, build automation to reduce developer toil, mentor engineers, champion AI-assisted coding, and optimize database performance and schemas.

Lead the design and development of full-stack solutions for prescription decision-making, maintain backend systems, mentor engineers, and ensure system scalability.

As a Senior Software Engineer, you will work across the stack to create scalable and reliable systems for tracking freight intelligence, influencing architecture, mentoring, and collaborating with various teams.

The Senior Software Engineer will design and build scalable technology platforms, contribute to architectural decisions, and apply strong security practices in a collaborative environment.

The Senior Backend Engineer will design and build scalable cloud-native backend systems for real-time monitoring and automation in HVAC operations, owning the entire lifecycle of services and mentoring junior engineers.

As a Senior Staff Software Engineer, you will lead the design and development of AI-powered products, mentor team members, and architect backend systems using Python and modern frameworks while ensuring code quality and optimizing performance.

The Staff Software Engineer will lead feature delivery by building frontend and backend components, focusing on architecture, optimization, security, and performance in a fast-paced environment.

Design and develop scalable software applications, implement automated testing, mentor junior developers, and optimize performance in a remote environment.