Top Senior Javascript Jobs in Miami, FL

Lead the development of a cutting-edge Dapp for ultra-low latency trading across multiple blockchain networks, managing complex state architectures and enhancing transaction protocols for a decentralized trading experience.

As a Senior Fullstack Engineer, you'll enhance Cloudbeds products, architect scalable solutions, and ensure performance and security in hotel integrations.

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

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

Deliver and support Curam implementations: lead technical workshops, produce functional/technical designs and prototypes, develop and unit test Curam extensions in a J2EE environment, configure application servers and integrations, use Eclipse, and support system operations and troubleshooting.

Lead technical initiatives for a stream-aligned engineering team: design and implement scalable, resilient microservice-based systems, build and maintain JSON APIs, apply DDD and best practices, mentor mid-level engineers, collaborate with product and stakeholders, and evaluate new technologies to support business goals.

Lead and architect front-end and full-stack features, balancing performance, accessibility, and maintainability. Partner with design, back-end, and product teams, mentor junior developers, improve tooling and workflows, review code, and evaluate emerging tools (including AI) to deliver high-quality interactive experiences.

Build and maintain interactive software and hardware-driven experiences across web, real-time graphics, games, and installations. Prototype, architect, estimate, and support projects; collaborate with designers, producers, and clients; handle on-site installation and technical planning.

Customer-facing senior Solutions Architect leading and mentoring engineers to design and deliver cloud-native, secure CI/CD solutions. Own POCs and packaging (Zarf/UDS), build CI/CD pipelines, deploy and troubleshoot containers and Helm/Kustomize artifacts across AWS/GCP/Azure, and drive process improvements and enablement for Defense customers.

Design, build, and maintain RESTful, SOAP, and GraphQL APIs; integrate third-party services and databases; implement OAuth2/JWT authentication; optimize performance with caching and load-balancing; document APIs; use Postman/Swagger/OpenAPI/SoapUI; work with cloud platforms, containerization, automated testing, and SQL/NoSQL databases.

Develop and maintain full-stack applications using modern JavaScript frameworks, manage cloud infrastructure, and ensure code quality through testing.

Build and ship full‑stack features for transportation management and other client products. Design and implement APIs and UIs, collaborate with product and design, own delivery, write modular testable code, troubleshoot and iterate quickly, and mentor peers.

Build, maintain, and ship a high-quality React Native mobile app for a logistics startup. Collaborate with product, design, and engineering teams, own delivery, troubleshoot issues, and mentor teammates in a fast-paced, startup environment.

The QA Engineering Manager will lead a team in building and implementing AI-driven QA processes, focusing on automation, mentoring staff, and ensuring quality standards across product lifecycles.

The Senior Full-Stack Software Engineer will design, build, and maintain secure, scalable web applications using modern technologies, with a focus on AI-assisted development and application security.

The role involves designing and building internal web applications for Nebius, focusing on automating data center operations and developing user interfaces for infrastructure management.

The role involves building prototypes using Crossmint's APIs, engaging in community interactions, improving developer documentation, and facilitating workshops, with an emphasis on exploring new frameworks and tools in agentic AI and crypto infrastructure.

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 Senior AI Engineer leads software implementation, mentors engineers, collaborates with product and DevOps teams, and ensures production reliability.

Design, build, and deliver Dataverse-first Dynamics 365 CE solutions across design, development, and post-go-live support. Own end-to-end technical delivery, build plugins/integrations, define data/security models, lead architecture workshops, mentor developers, and support sales and technical validation with Microsoft FastTrack.

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.

Lead SRE work to improve availability, reliability, observability, and security for a distributed SaaS platform. Build and maintain IaC (Terraform, CloudFormation), support CI/CD, manage containerized production environments (Kubernetes/EKS), run disaster recovery exercises, participate in on-call rotation, collaborate cross-functionally, and mentor teams while integrating tooling including AI into SRE workflows.

Lead and grow a full‑stack engineering team delivering cloud‑based, scalable healthcare software. Oversee development, QA, APIs, data interactions, UI work, testing (TDD), performance optimization, hiring, and career development while ensuring security and interoperability.

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

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.