Top Senior Javascript Jobs in Miami, FL

The Senior Software Engineer designs and develops software applications, optimizes APIs and databases, collaborates with teams, and ensures code quality through various testing practices.

Design, build, and lead AWS-based contact center solutions (Amazon Connect, Salesforce Service Cloud Voice). Develop integrations, implement CloudFormation/Lambda, apply IaC and CI/CD, perform code reviews, provide technical advisory, documentation and training, and ensure secure, scalable architectures.

The Senior Software Engineer will develop orchestration and autoscaling for the Lucenia search platform, working with cloud technologies and Kubernetes to manage services and mentor team members.

The Lead Quality Engineer will set quality standards, mentor a QA team, improve testing strategies, and enhance automation in AI-driven workflows.

Design, build, test, and maintain enterprise applications and integrations for VA healthcare modernization. Work in Agile teams to develop APIs, microservices, CI/CD pipelines, and DevSecOps practices, support legacy VistA/MUMPS systems, troubleshoot performance and integration issues, and ensure federal cybersecurity and compliance.

Develop and deploy life-saving technologies as a fullstack engineer, focusing on web applications for public safety, collaborating with various engineering disciplines and leveraging customer feedback.

As a Lead BPM Consultant, oversee software development life cycle phases, implement IBM BAW/BPM processes, lead teams, and foster effective relationships.

Design, build, and maintain FeeNavigator features across backend and frontend. Optimize MySQL queries, write unit/integration/end-to-end tests, refactor complex code, document architecture, participate in code reviews, collaborate with Product and SRE, diagnose incidents and performance issues, and contribute to development process improvements.

Join Aleph's engineering team to develop the Core Product, focusing on user-facing features for financial data insights. Collaborate with leadership, design robust software components, and contribute to system architecture in a fast-paced, remote environment.

As a Freelance Solutions Architect, you'll design scalable marketing technology solutions focusing on CRM, CDP, and automation integrations, leading implementations for client success.

The Senior Software Engineer will develop and enhance features for the Keeper Browser Extension, ensuring quality, security, and performance, while collaborating with cross-functional teams and following coding best practices.

Lead front-end architecture and EDS migration for enterprise web applications using AEM. Define standards, develop reusable components (React/Angular), integrate Adobe Experience Cloud services, ensure performance, accessibility (WCAG 2.1), and mentor engineers while supporting delivery planning, technical governance, and API integration.

Build and maintain Supabase JS/TS SDKs used across runtimes. Author libraries, manage public repos, triage issues, review PRs, keep CI/release automation healthy, own type experience, support realtime/WebSocket semantics, ensure cross-runtime compatibility, write RFCs, docs, and migration guides, and improve SDKs for AI coding agents.

Design, build, and maintain scalable web applications for payroll and accounting. Collaborate with engineers and product partners, write tested code, participate in code reviews, contribute to architecture, improve CI/CD and monitoring, support production (including on-call), and communicate progress while continuously learning.

Define and build developer enablement materials for integrations: scope needs with sales engineers and clients; write guides; build reference implementations, connectors, scripts and AI skills; generalize one-offs into reusable kits; and feed product with evidence-backed feature recommendations.

Design, build, test, and deploy custom Salesforce solutions (Apex, LWC, Flows, Visualforce) across Sales Cloud, Service Cloud, and CPQ. Lead technical design, integrations (REST/SOAP), data management, security, governance, CI/CD deployments (Gearset/Copado/SFDX), provide L2/L3 support, mentor junior staff, and document standards and release processes.

Design, develop, and maintain scalable full‑stack web applications using Java/Spring Boot backends and React frontends. Build RESTful APIs/microservices, integrate third‑party services, optimize performance and security, write tests, participate in code reviews and architecture discussions, troubleshoot production issues, and contribute to CI/CD and DevSecOps practices.

Design, develop, test, and deploy scalable enterprise web applications and APIs using .NET technologies. Build front-end features with Angular/React, optimize performance and security, run CI/CD pipelines, work with cloud-native and containerized deployments, participate in architecture and code reviews, mentor junior developers, and collaborate in Agile teams to troubleshoot production issues.

Lead development and optimization of web scraping pipelines to extract, clean, and store large-scale web data. Handle dynamic content, pagination, distributed scraping, database design with NoSQL, deploy jobs to cloud, and monitor systems for reliability and data quality. Support ML-based data cleaning and categorization.

Lead design, development, and implementation of Salesforce solutions (LWC, Apex, Visualforce) including Experience and Commerce Cloud and Accounting Seed. Build integrations (REST/SOAP, payment gateways), CPQ and Marketplace apps, mentor developers, perform code reviews, and optimize platform performance and reliability.

Design and maintain federated GraphQL schemas and server-driven UI; build fast, accessible front-end apps with React and TypeScript; develop and optimize GraphQL/SQL backends; operate production services (Kubernetes, observability in DataDog), own releases and on-call rotations; drive testing, CI/CD, technical debt reduction, mentoring, and cross-team coordination.

Design, build, and operate bidirectional integrations between the Quadrivia AI platform and major US EHRs and healthcare systems. Implement HL7v2 and FHIR R4 interfaces, operate integration engines (InterSystems IRIS or equivalents), ensure secure connectivity and compliance (HIPAA/SOC2/HITRUST), guarantee data integrity and patient matching, coordinate parallel integration teams, set standards, mentor engineers, and support customer security reviews and go-lives.

The Senior Oracle Payroll Integrations Developer will design, develop, and maintain integrations across payroll systems, ensuring data integrity and compliance while optimizing performance and scalability.

Design, manage, and implement Appian-based applications for financial services and insurance clients. Capture requirements with Tech Leads, translate business needs into solutions, deliver custom Appian implementations, collaborate with architects and delivery teams, and develop reusable assets, accelerators, and best practices.

Lead frontend development using React.js to build responsive, accessible UIs. Integrate React applications with CMS platforms, implement reusable components following atomic design, and use browser storage APIs (LocalStorage, SessionStorage, IndexedDB). Collaborate with designers, backend teams, and QA, and follow Git and CI/CD workflows.