Top Senior Software Engineer Jobs in Jacksonville, FL

Design and evolve systems for Motion's infrastructure, focusing on reliable and secure operations across APIs, Linux systems, and cloud environments with a focus on hands-on coding and engineering judgment.

The Senior Software Engineer will design and build fullstack features using Go, React, and Ember, ensuring optimal customer experiences and system scalability while mentoring peers and driving projects.

Lead QA activities for an IAM program: design and implement QA methodologies, create and run manual and automated tests, perform code/product reviews, triage defects, validate functionality/performance/security, and support CI/CD, UAT, and release validation across Agile teams.

Design and implement scalable frontend solutions using JavaScript/TypeScript and React. Drive architecture discussions, ship features with minimal guidance, maintain code quality and styling standards, collaborate across agile teams, ensure performance and scalability, and manage end-to-end feature lifecycles in a fast-moving environment.

Design, develop, and maintain backend services for the Leap quantum-classical hybrid cloud platform. Collaborate with product owners and architects across the SDLC to deliver features, troubleshoot and tune production systems, write clean maintainable code, participate in code reviews and on-call rotation, and mentor junior engineers to improve engineering practices and platform scalability.

The Senior Backend Engineer will design and build backend systems for a multi-cloud platform, ensuring performance, scalability, and high quality while collaborating with various teams and stakeholders.

Design and own AI-agent-driven test workflows and the automated verification framework. Build test context, select models and tooling, validate AI-generated code and tests, operate test automation across UI/API/mobile/data, ensure security and compliance, mentor teams, and continuously improve agent orchestration and observability.

Lead design and implementation of scalable backend systems that ingest, process, and serve high-volume health data. Own projects end-to-end, drive integrations with third-party APIs, improve data reliability and observability, mentor engineers, and partner with product, clinical, and data teams to deliver clinically meaningful insights.

Perform systems and software engineering tasks including analysis, design, development, testing, integration, debugging, and documentation. Support API-driven, low-code/no-code BPMN-based automation platforms (Appian, Salesforce, Nintex) with SQL Server and .NET, collaborate with Agile teams, and maintain secure remote work practices for CUI-bearing government projects.

Lead full‑stack development for the Care Journey product, owning design and delivery of GraphQL/Python APIs and React/React Native experiences. Write technical specs, drive large cross‑team projects, ensure HIPAA/GDPR compliance, mentor engineers, participate in on‑call, and deliver performant, scalable systems across web and mobile.

Design, build, and scale Storesight's web applications and services. Lead architecture and implementation of features, maintain integrations and APIs, troubleshoot production issues, reduce technical debt, and mentor engineers while promoting best practices, testing, and deployment in a cloud environment.

As a Sr. Software Engineer at Bloomerang, you will lead technical direction, mentor engineers, and enhance SaaS solutions while utilizing .NET and AI tools. You will ensure scalable, maintainable applications, advocate for Agile workflows, and focus on quality outcomes in software development.

Lead design, development, testing, deployment, and support of cloud-based software products. Provide technical leadership and mentorship, translate feature requirements into implementation tasks, ensure quality (tests, performance, security), resolve technical risks and defects, and collaborate with stakeholders to deliver scalable microservices and AI-integrated features.

Design and architect cloud-first, full-stack, scalable SaaS products; provide technical leadership, mentor engineers, promote automated testing and CI/CD, integrate AI/ML features (LLM/RAG), ensure observability and security, and collaborate with product, operations, and support.

Build and scale a global payments and treasury platform: design and implement resilient, event-driven microservices, client-facing APIs, and distributed systems; work with cloud infrastructure, container orchestration, message brokers, and relational databases to support high-volume money movement and financial ledgers.

The Staff Software Engineer will lead AI integration into software design, develop scalable systems, and mentor other engineers while improving best practices.

Design, build, test, and deploy features for high-traffic web applications across multiple sports reference sites. Work full-stack on CI/CD pipelines and data ingestion, own features/systems, triage production issues, mentor peers, and contribute to technical planning and security/compliance improvements.

The Sr Software Engineer will design, code, test, and document software solutions, lead technical aspects, and support integrations with various IT teams.

The Senior Software Developer will design and develop web and mobile applications, collaborate with scientists, implement APIs, and mentor developers.

The Lead Software Engineer will lead the design and development of enterprise solutions using Microsoft Dynamics 365 and Power Platform, oversee engineering practices, mentor team members, and collaborate with stakeholders for effective delivery and alignment.

Build and maintain full-stack Finance and Business Systems with Ruby on Rails. Own architecture, coding, automated tests, DB tuning, deployments, and production support. Partner with Finance, Operations, and Engineering to create auditable, correct, and actionable unit-economics instrumentation. Participate in on-call rotation, hiring, and documentation.

Lead delivery of high-complexity digital banking implementations: design and build Java Spring Boot microservices, REST APIs, cloud-native containerized deployments, data and DB migrations, event streaming, monitoring and performance optimization. Act as a customer-facing technical lead conducting code reviews, test strategies, and cross-functional coordination to resolve operational issues.

The Senior Software Engineer will work on full-stack deliverables, manage support tickets, and enhance the tech stack for improved efficiency, focusing on analytics and automation in OOH advertising.

As a Senior Software Engineer, you will lead your team in delivering features according to specifications, ensuring scalable technical decisions, and mentoring team members.

Design and implement AI-powered educational software, focusing on generative AI systems, mentor peers, and ensure scalable, secure architecture.