Top Senior Javascript Jobs in Miami, FL

The Senior Software Engineer will develop and maintain software solutions, mentor junior staff, and collaborate with team members to improve product quality.

Lead design and scaling of a high-performance, data-intensive storage layer for network telemetry. Co-own multi-year roadmap, collaborate with product/support/sales, and solve challenging distributed storage and query-performance problems at large scale.

Lead and mentor the Ingest and Network Data teams to design and scale high-performance data ingestion and real-time enrichment systems. Define requirements and success metrics, contribute hands-on to new and maintenance projects, drive engineering best practices, collaborate cross-functionally, and participate in hiring.

Design and build near production partner solutions on Glean, own end-to-end architecture, automate deployments with IaC, create reusable patterns and docs, advise strategic partners, lead workshops, enable partner teams, align technical plans with GTM, and collaborate across Sales, Product, and Engineering.

The Lead Software Engineer designs and develops application modules, enhances company productivity, writes tests, and collaborates on IT initiatives.

The Senior Software Engineer will develop and maintain full stack applications at Polly, utilizing various technologies for web and mobile platforms, mentor teammates, and collaborate with product teams.

Lead a development team in creating scalable Salesforce solutions, mentor developers, handle end-to-end service development, and ensure adherence to coding and DevOps standards.

Lead frontend development and design-system creation, bridge design and code, maintain Storybook components, introduce AI-powered workflows, mentor teams, and deliver scalable B2B SaaS UI solutions.

You will own the delivery of AI features, design and build applications utilizing LLMs, and work across the tech stack with a focus on user experience.

Develop custom scoped applications on the ServiceNow platform, collaborate with teams on data interfaces, and manage application testing and development requirements.

As a Staff Frontend Engineer, you will lead frontend development, mentor engineers, optimize performance, and collaborate on user experience and architecture.

Design, build, and maintain automation frameworks and tools to validate endpoint workflows across Windows, macOS, and Linux. Integrate tests into CI/CD, manage containerized test environments, validate auth/SSO and backend APIs, analyze failures, and mentor QA engineers to improve automation practices.

Develop and maintain scalable, secure browser extension features using JavaScript/React/TypeScript. Write tests (Jest/TDD), collaborate with product and design, optimize performance and security, refactor and fix bugs, and uphold code quality through reviews.

Design, build, and scale automated test systems and frameworks for Keeper Secrets Manager. Develop reusable libraries and CI/CD-integrated tests for APIs, SDKs, and cloud services, manage containerized test environments, validate secure auth flows, analyze failures, and mentor other QA engineers to improve platform testability and stability.

Maintain and improve Keeper's browser extension and Snapshot feature by identifying, reproducing, and resolving autofill and web compatibility issues; collaborate with Support, Product, and Engineering; document fixes, improve tooling (Fixinator), and mentor team members to scale the Snapshot program.

Design and implement cross-platform features for KeeperChat (desktop, mobile, web). Build and maintain .NET/C# MAUI clients and React web UI, optimize performance and reliability, participate in code reviews, collaborate with product/design/backend teams, and mentor junior engineers while upholding security and code quality.

Architect and implement scalable React/TypeScript user interfaces for web and Electron desktop apps. Integrate native modules (C++/Objective-C), work with REST APIs under zero-knowledge principles, optimize performance and accessibility, lead code reviews, mentor engineers, and participate in CI/CD and automated testing to deliver secure, high-quality features.

Design, build, and maintain scalable React/TypeScript web applications for Keeper's Admin Console. Integrate with backend REST APIs, implement enterprise UI workflows (RBAC, policy config, audit views), ensure secure, well-tested frontend code, participate in architecture and code reviews, troubleshoot performance and usability, and maintain documentation.

Design, build, and maintain scalable automation frameworks and reusable libraries to validate privileged access and identity workflows. Automate API, integration, and end-to-end tests, integrate tests into CI/CD, manage containerized test environments, and collaborate with engineering, QA, and security to improve system reliability and testability.

Lead design and implementation of health data products, mentor engineers, own multiple projects, and develop scalable data solutions using modern technologies.

As a Senior/Staff Software Engineer, you will design and implement products, guide other engineers, and drive innovation in health data solutions.

Develop and maintain front-end applications using React and Next.js while integrating with eCommerce platforms like Adobe Commerce and Shopware. Collaborate with cross-functional teams to deliver high-performance user interfaces and optimize applications for scalability and accessibility.

The Senior Software Engineer will develop, maintain, and improve software for SkySlope, focusing on collaboration, innovation, and effective communication while managing project deliverables and providing mentorship to peers.

As a Senior Software Engineer, you will lead the development of Dutchie's ecommerce platforms, focusing on front-end technologies to optimize user experiences for cannabis retailers and consumers.

The App Dev & Support Engineer III is responsible for designing, coding, and documenting Java applications, collaborating in Agile environments, and driving independent projects while mentoring junior developers.