Top Senior Javascript Jobs in Miami, FL

Design, build, and maintain scalable backend services and APIs; deliver product features end-to-end; maintain integrations; diagnose and resolve performance and reliability issues; improve engineering practices and architecture; support large-scale data ingestion and unified data access layers.

Lead quality strategy for an AI-first platform: define testing standards, metrics, and automation; validate AI models and data pipelines; design API and UI tests; coach teams on shift-left quality and release gates; improve observability and performance practices to ensure scalable, data-driven quality outcomes.

Own and modernize end-to-end Workday-to-Talent integrations: design, build, deploy, and operate integrations; define standards; implement transformation logic; ensure observability, reliability, and vendor delivery; document and coach partners.

As a Senior Shopify Developer, you will lead e-commerce solutions by customizing Shopify, collaborating with clients, and ensuring high-quality delivery of projects.

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

As a Staff Product Engineer, you'll lead the design and delivery of Vitable's financial systems, ensuring reliability, compliance, and scalability, while collaborating with cross-functional teams in a fintech environment.

The Staff Software Engineer will lead projects, mentor team members, write code using Python, Django, React, JavaScript, and TypeScript, and impact the healthcare system with software solutions.

As a Senior Software Engineer at Medallion, you'll lead projects, mentor team members, and work with technologies like Python, Django, React, and TypeScript to impact healthcare operations.

Lead a team of engineers in building AI-native music experiences, ensuring quality delivery, managing sprint execution, and developing team skills.

Administer and maintain IRIS for Health integration platforms on AWS EC2 and Linux, manage network security and PaloAlto VPNs, build CI/CD with CodeFresh/GitLab, integrate and troubleshoot EHR interfaces (Epic, Cerner, Allscripts), automate provisioning with scripting (Python, ObjectScript, Bash, JavaScript), implement infrastructure automation, monitor systems, participate in on-call support, and optimize performance and reliability.

Develop and maintain web application user interfaces using Vaadin and front-end technologies. Apply UI fundamentals (including Fitts' law), refactor enterprise applications, collaborate with clients, and mentor/train other front-end developers.

The Staff Engineer will leverage over 5 years of experience in Java, JavaScript, and frameworks to develop robust solutions, mentor teammates, and enhance client outcomes while utilizing agile methodologies and cloud development tools.

The Associate Staff Engineer will lead automation testing efforts utilizing various tools and frameworks while mentoring teammates and implementing agile practices.

The Staff Engineer will leverage 5+ years of experience in C#, JavaScript, and frameworks to lead and innovate solutions in a collaborative environment.

Seeking a Staff Engineer with 5+ years in Java, focusing on mentoring teammates, solving client challenges, and conducting cloud development.

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.

Lead backend development using C#/.NET and cloud-native technologies. Build and maintain APIs, ensure quality and performance, troubleshoot issues, conduct code reviews, and drive software/process improvements.

Lead technical direction for Internal Tools, designing and building end-to-end front-end and back-end systems. Implement recommendation, ranking, and search capabilities, reduce technical debt with refactors, establish engineering standards, mentor engineers, and ensure secure admin interfaces and reusable tooling.

Lead technical design and engineering standards for Palantir Foundry applications. Guide architecture, data modeling, integrations, and platform enablement. Conduct design reviews, mentor engineers, manage cross-project technical planning, and act as escalation for production issues. Communicate technical tradeoffs to stakeholders and improve operational readiness, testing, and deployment practices.

Lead design, development, testing, and deployment of cloud-native full‑stack applications and microservices. Provide technical leadership, mentor engineers, implement CI/CD and automated tests, and drive modernization using GCP or similar cloud platforms, containers, and enterprise security best practices.

The Workato Integration Architect will design and implement integrations using Workato, lead development of recipes and connectors, and collaborate with teams to define and optimize integration strategies.

Design, architect, and implement cloud-first full-stack software using Java/C# and JavaScript frameworks. Provide technical leadership, mentor engineers, improve architecture and performance, promote CI and automated testing, and support customer implementation and cloud platform operations.

Own and improve Attentive's first-party data collection across the JS tag, Cloudflare Workers, and Java backend. Expand edge compute capabilities, build agentic AI systems to detect and fix data-quality issues, harden the event ingestion pipeline for reliability and observability, and lead technical direction on a small autonomous team while mentoring engineers.

Lead design, development, and deployment of scalable, fault-tolerant cloud-native microservices. Own architecture, mentor engineers, run on-call rotations, triage production incidents, optimize performance, and collaborate with product and stakeholders to deliver full‑stack and mobile solutions.

Build and maintain the company website, client-facing portal, and internal web apps. Design and structure web pages, implement UI enhancements, optimize performance and scalability, collaborate with backend engineers (Go), ensure brand-consistent design, and mentor teammates to drive product excellence.